跟我一步步二进制部署高可用kubernetes集群（上）

1.实现架构

image

1.1 硬件环境

创建5台虚拟机

网络：可通外网

Role	HOSTNAME	IP	CPU	MEM	OS	DISK
LB、DNS	zdd211-11.host.com	10.211.55.11	2C	2G	Centos7.5	20G
LB、ETCD	zdd211-12.host.com	10.211.55.12	2C	2G	Centos7.5	20G
Master1、Node1、ETCD	zdd211-21.host.com	10.211.55.21	4C	8G	Centos7.5	20G
Master2、Node2、ETCD	zdd211-22.host.com	10.211.55.22	4C	8G	Centos7.5	20G
Harbor、NFS	zdd211-200.host.com	10.211.55.200	2C	2G	Centos7.5	20G

具体IP 以自己网络配置，但是后续的文档中的IP需要自己修改替换

2.实验准备工作

2.1 准备虚拟机

代码语言：javascript复制

[root@zdd211-11 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="eth0"
UUID="7290e242-14de-4cd8-92f4-5406b3507f03"
DEVICE="eth0"
ONBOOT="yes"
IPADDR=10.211.55.11
PREFIX=24
GATEWAY=10.211.55.1
DNS1=10.211.55.1

2.2 调整操作系统初始化

代码语言：javascript复制

在每一个主机上分别设置各自的主机名
#hostnamectl set-hostname zdd211-11.host.com
#hostnamectl set-hostname zdd211-12.host.com
#hostnamectl set-hostname zdd211-21.host.com
#hostnamectl set-hostname zdd211-22.host.com
#hostnamectl set-hostname zdd211-200.host.com

所有主机firewalldf防火墙
#systemctl stop firewalld.service  && systemctl enable firewalld

所有主机关闭SElinux
#setenforce 0 #临时
#sed -i 's/enforcing/disabled/' /etc/selinux/config #永久

关闭swap
#swapoff -a #临时
#sed -i '/ swap / s/^(.*)$/#1/g' /etc/fstab #永久

永久生效都需要重启服务器,验证是否生效
[root@zdd211-11 ~]# getenforce
Disabled
[root@zdd211-11 ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:           1833         111        1533           8         188        1555
Swap:             0

同步系统时间
#ntpdate time.windows.com

安装epel源和base源
#yum  -y  install epel-release

安装必要的软件和工具
# yum install wget net-tools telnet tree nmap sysstat lrzsz dos2unix bind-utils -y

2.3 DNS服务初始化

2.3.1 安装bind9软件

zdd211-11上操作

代码语言：javascript复制

[root@zdd211-11 ~]# yum install bind -y ##安装dns软件

2.3.2 配置bind9

主配置文件

zdd211-11上操作

代码语言：javascript复制

[root@zdd211-11 ~]#vim /etc/named.conf   ##dns 配置文件
options {
        listen-on port 53 { 10.211.55.11; };  ## 配置本机IP地址
        allow-query     { any; };  ## 让这个网段的所有主机都可用
        forwarders      { 10.211.55.1; }; ## 配置网关
        recursion yes; ##递归查询
        dnssec-enable no;
        dnssec-validation no;
[root@zdd211-11 ~]# named-checkconf ##检查dns 配置文件，没有报错就可以

区域配置文件

代码语言：javascript复制

#vim /etc/named.rfc1912.zones   ## 修改区域配置文件,在最底部填写如下信息，ip地址修改成本机地址
zone "host.com" IN {
        type  master;
        file  "host.com.zone";
        allow-update { 10.211.55.11; };
};


zone "od.com" IN {
        type  master;
        file  "od.com.zone";
        allow-update { 10.211.55.11; };
};

配置区域数据文件

代码语言：javascript复制

[root@zdd211-11 ~]# vim /var/named/host.com.zone # 其中serial需要改成自己当天的时间，底部的主机名和ip也修改成自己的
$ORIGIN host.com.
$TTL 600        ; 10 minutes
@       IN SOA  dns.host.com. dnsadmin.host.com. (
                                2020022901   ; serial
                                10800      ; refresh (3 hours)
                                900        ; retry (15 minutes)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                        NS   dns.host.com.
$TTL 60 ; 1 minute
dns                 A    10.211.55.11
zdd211-11           A    10.211.55.11
zdd211-12           A    10.211.55.12
zdd211-21           A    10.211.55.21
zdd211-22           A    10.211.55.22

配置业务域数据文件

代码语言：javascript复制

[root@zdd211-11 ~]# vim /var/named/od.com.zone
$ORIGIN od.com.
$TTL 600        ; 10 minutes
@               IN SOA  dns.od.com. dnsadmin.od.com. (
                                2020022101 ; serial
                                10800      ; refresh (3 hours)
                                900        ; retry (15 minutes)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                                NS   dns.od.com.
$TTL 60 ; 1 minute
dns                A    10.211.55.11

启动bind9

代码语言：javascript复制

[root@zdd211-11 ~]# named-checkconf ##检查dns 配置文件，没有报错就可以
[root@zdd211-11 ~]# systemctl start named ##启动
[root@zdd211-11 ~]# netstat -luntp|grep 53
tcp        0      0 10.211.55.11:53         0.0.0.0:*               LISTEN      14046/named
tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      14046/named
tcp6       0      0 ::1:53                  :::*                    LISTEN      14046/named
tcp6       0      0 ::1:953                 :::*                    LISTEN      14046/named
udp        0      0 10.211.55.11:53         0.0.0.0:*                           14046/named
udp6       0      0 ::1:53

验证

代码语言：javascript复制

[root@zdd211-11 ~]# dig  -t  A  zdd211-200.host.com @10.211.55.11  short
10.211.55.200
[root@zdd211-11 ~]# dig  -t  A  zdd211-11.host.com @10.211.55.11  short
10.211.55.11

配置客户端使用dns

linux主机

代码语言：javascript复制

[root@zdd211-11 ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 ##修改需要使用这个dns的服务器网卡配置
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="eth0"
UUID="7290e242-14de-4cd8-92f4-5406b3507f03"
DEVICE="eth0"
ONBOOT="yes"
IPADDR=10.211.55.11
PREFIX=24
GATEWAY=10.211.55.1
DNS1=10.211.55.11

[root@zdd211-11 ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search host.com  ##增加主机域
nameserver 10.211.55.11
nameserver fe80::21c:42ff:fe00:18%eth0

剩下四台机器同样的操做

1、修改网卡配置文件，将 dns1 改成：10.211.55.11

2、在/etc/resolv.conf 增加主机域

windows主机和Mac上

网络和共享中心->网卡设置->设置DNS服务器如有必要，还应设置虚拟网卡的接口跃点数为：10

检查

1、五台机器之间可以相互之间可以 ping通其中两台
2、本机电脑也要ping 通 zdd211-11.hsot.com 和 dns.od.com 这两个域名可以更改电脑的 dns，，但是记得用完要更改回来

2.4 准备签发证书环境

2.4.1 安装cfssl

证书签发工具cfssl:R1.2

代码语言：javascript复制

[root@zdd211-200 ~]# wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O /usr/bin/cfssl
[root@zdd211-200 ~]wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O /usr/bin/cfssl-json
[root@zdd211-200 ~]wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/bin/cfssl-certinfo
[root@zdd211-200 ~]# chmod   x  /usr/bin/cfssl*

2.4.2 创建生成CA证书签名请求（csr）的JSON配置文件

代码语言：javascript复制

[root@zdd211-200 ~]# cd /opt/
[root@zdd211-200 opt]# mkdir certs
[root@zdd211-200 opt]# cd certs/
[root@zdd211-200 certs]# vim ca-csr.json
{
    "CN": "Goldwind",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ],
    "ca": {
        "expiry": "175200h"
    }
}

CN:Common Name,浏览器使用该字段验证网站是否合法，一般写的是域名，非常重要。 C：Country，国家 ST：State，州，省 L：Locality，地区，城市 O：Organization Name,组织名称，公司名称 OU：Organization Unit Name,组织单位名称，公司部门

2.4.3 生成CA证书和私钥

代码语言：javascript复制

[root@zdd211-200 certs]# cfssl gencert -initca ca-csr.json | cfssl-json -bare ca
2020/02/29 20:23:57 [INFO] generating a new CA key and certificate from CSR
2020/02/29 20:23:57 [INFO] generate received request
2020/02/29 20:23:57 [INFO] received CSR
2020/02/29 20:23:57 [INFO] generating key: rsa-2048
2020/02/29 20:23:57 [INFO] encoded CSR
2020/02/29 20:23:57 [INFO] signed certificate with serial number 428559232580901856197456402666377998171140121588
[root@zdd211-200 certs]# ls
ca.csr  ca-csr.json  ca-key.pem  ca.pem

2.5 部署docker环境

需要在zdd211-200.host.com,zdd211-21.host.com,zdd211-22.host.com上分别进行操作

2.5.1 安装

代码语言：javascript复制

[root@zdd211-200 ~]# curl -fsSL https://get.docker.com | bash -s docker --mirror Aliyun

2.5.2 配置

代码语言：javascript复制

[root@zdd211-200 ~]# mkdir -p /data/docker  /etc/docker
[root@zdd211-200 ~]# vim /etc/docker/daemon.json
{
  "graph": "/data/docker",
  "storage-driver": "overlay2",
  "insecure-registries": ["registry.access.redhat.com","quay.io","harbor.od.com"],
  "registry-mirrors": ["https://q2gr04ke.mirror.aliyuncs.com"],
  "bip": "172.7.200.1/24",
  "exec-opts": ["native.cgroupdriver=systemd"],
  "live-restore": true
}

2.5.3 启动

代码语言：javascript复制

[root@zdd211-200 ~]# systemctl start docker  && systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.
[root@zdd211-200 ~]# docker version
Client: Docker Engine - Community
 Version:           19.03.6
 API version:       1.40
 Go version:        go1.12.16
 Git commit:        369ce74a3c
 Built:             Thu Feb 13 01:29:29 2020
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.6
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.16
  Git commit:       369ce74a3c
  Built:            Thu Feb 13 01:28:07 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.2.10
  GitCommit:        b34a5c8af56e510852c35414db4c1f4fa6172339
 runc:
  Version:          1.0.0-rc8 dev
  GitCommit:        3e425f80a8c931f88e6d94a8c831b9d5aa481657
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683
[root@zdd211-200 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

2.6 部署docker镜像私有仓库harbor

按照集群的规划是在zdd211-200.host.com主机上部署

下载软件二进制包解压

代码语言：javascript复制

[root@zdd211-200 src]# wget https://storage.googleapis.com/harbor-releases/release-1.8.0/harbor-offline-installer-v1.8.3.tgz
[root@zdd211-200 src# tar -xf  harbor-offline-installer-v1.8.3.tgz   -C  /opt
[root@zdd211-200 src]# cd ..
[root@zdd211-200 opt]# mv harbor/  harbor-v1.8.3
[root@zdd211-200 opt]# ln -sf  /opt/harbor-v1.8.3/   /opt/harbor ##方便将来升级

配置

代码语言：javascript复制

[root@zdd211-200 opt]# cd harbor
[root@zdd211-200 harbor]# vim harbor.yml ##主要修改如下地方
hostname: harbor.od.com
http:
port: 180  ##启动端口
harbor_admin_password: Harbor12345 ##密码，生产环境需要修改
data_volume: /data/harbor
log:
  level: info
  rotate_count: 50
  rotate_size: 200M
  location: /data/harbor/logs
[root@zdd211-200 harbor]# mkdir -p /data/harbor/logs

安装docker-compose

代码语言：javascript复制

[root@zdd211-200 harbor]# yum -y install  docker-compose
[root@zdd211-200 harbor]# docker-compose version
docker-compose version 1.18.0, build 8dd22a9
docker-py version: 2.6.1
CPython version: 3.6.8
OpenSSL version: OpenSSL 1.0.2k-fips  26 Jan 2017

安装harbor

代码语言：javascript复制

[root@zdd211-200 harbor]# ./install.sh  ##启动

检查harbor启动情况

代码语言：javascript复制

[root@zdd211-200 harbor]# docker-compose ps  ##查看是否启动正常
      Name                     Command               State             Ports
--------------------------------------------------------------------------------------
harbor-core         /harbor/start.sh                 Up
harbor-db           /entrypoint.sh postgres          Up      5432/tcp
harbor-jobservice   /harbor/start.sh                 Up
harbor-log          /bin/sh -c /usr/local/bin/ ...   Up      127.0.0.1:1514->10514/tcp
harbor-portal       nginx -g daemon off;             Up      80/tcp
nginx               nginx -g daemon off;             Up      0.0.0.0:180->80/tcp
redis               docker-entrypoint.sh redis ...   Up      6379/tcp
registry            /entrypoint.sh /etc/regist ...   Up      5000/tcp
registryctl         /harbor/start.sh                 Up

配置harbor的dns内网解析

去zdd211-11上配置DNS

代码语言：javascript复制

[root@zdd211-11 ~]# vim /var/named/od.com.zone ##在最后添加一条harbor的解析
$ORIGIN od.com.
$TTL 600        ; 10 minutes
@               IN SOA  dns.od.com. dnsadmin.od.com. (
                                2020022102 ; serial
                                10800      ; refresh (3 hours)
                                900        ; retry (15 minutes)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                                NS   dns.od.com.
$TTL 60 ; 1 minute
dns                A    10.211.55.11
harbor             A    10.211.55.200

[root@zdd211-11 ~]# systemctl restart  named
[root@zdd211-11 ~]# dig  -t A  harbor.od.com   short
10.211.55.200

安装nginx并配置

去zdd211-200上：

代码语言：javascript复制

[root@zdd211-200 harbor]# yum -y install nginx
[root@zdd211-200 harbor]# vim  /etc/nginx/conf.d/harbor.od.com.conf
server {
    listen       80;
    server_name  harbor.od.com;

    client_max_body_size 1000m;

    location / {
        proxy_pass http://127.0.0.1:180;
    }
}
[root@zdd211-200 harbor]# nginx -t
[root@zdd211-200 harbor]# systemctl start nginx
[root@zdd211-200 harbor]# systemctl enable nginx

浏览器打开测试检查

打开本机浏览器，输入Url:http://harbor.od.com

image

用户名：admin 密码：Harbor12345

image

在zdd211-200上推送镜像验证harbor镜像仓库

代码语言：javascript复制

[root@zdd211-200 harbor]# docker pull nginx:1.7.9
[root@zdd211-200 harbor]#  docker images |grep nginx
goharbor/nginx-photon           v1.8.3                     3a016e0dc7de        5 months ago        37MB
nginx                           1.7.9                      84581e99d807        5 years ago         91.7MB
[root@zdd211-200 harbor]# docker tag  84581e99d807 harbor.od.com/public/nginx:v1.7.9
[root@zdd211-200 harbor]#  docker images |grep nginx
goharbor/nginx-photon           v1.8.3                     3a016e0dc7de        5 months ago        37MB
nginx                           1.7.9                      84581e99d807        5 years ago         91.7MB
harbor.od.com/public/nginx      v1.7.9                     84581e99d807        5 years ago         91.7MB
[root@zdd211-200 harbor]# docker login harbor.od.com
Username: admin
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
[root@zdd211-200 harbor]# docker push harbor.od.com/public/nginx:v1.7.9
The push refers to repository [harbor.od.com/public/nginx]
5f70bf18a086: Pushed
4b26ab29a475: Pushed
ccb1d68e3fb7: Pushed
e387107e2065: Pushed
63bf84221cce: Pushed
e02dce553481: Pushed
dea2e4984e29: Pushed
v1.7.9: digest: sha256:b1f5935eb2e9e2ae89c0b3e2e148c19068d91ca502e857052f14db230443e4c2 size: 3012
[root@zdd211-200 harbor]#

登陆harbor镜像仓库验证

image

3.部署Master节点服务

3.1 部署etcd集群

集群规划

主机名	角色	ip
zdd211-12.host.com	Etcd lead	10.211.55.12
zdd211-21.host.com	Etcd follow	10.211.55.21
zdd211-22.host.com	Etcd follow	10.211.55.22

注意：这里部署文件以zdd211-12.host.com主机为例，另外两台主机安装部署方法类似

创建基于根证书的config配置文件

代码语言：javascript复制

[root@zdd211-200 ~]# cd /opt/certs/
[root@zdd211-200 certs]# vim ca-config.json
{
    "signing": {
        "default": {
            "expiry": "175200h"
        },
        "profiles": {
            "server": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth"
                ]
            },
            "client": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "client auth"
                ]
            },
            "peer": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth",
                    "client auth"
                ]
            }
        }
    }
}

生产etcd证书和密钥

代码语言：javascript复制

[root@zdd211-200 certs]# vim etcd-peer-csr.json
{
    "CN": "k8s-etcd",
    "hosts": [
        "10.211.55.11",
        "10.211.55.12",
        "10.211.55.21",
        "10.211.55.22"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}
[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json
[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json | cfssl-json -bare etcd-peer
2020/02/29 21:33:22 [INFO] generate received request
2020/02/29 21:33:22 [INFO] received CSR
2020/02/29 21:33:22 [INFO] generating key: rsa-2048
2020/02/29 21:33:22 [INFO] encoded CSR
2020/02/29 21:33:22 [INFO] signed certificate with serial number 9245854548474729834486793670346860279143220749
2020/02/29 21:33:22 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").

检查生产的证书、密钥

代码语言：javascript复制

[root@zdd211-200 certs]# ls -l|grep etcd
-rw-r--r-- 1 root root 1062 Feb 29 21:33 etcd-peer.csr
-rw-r--r-- 1 root root  375 Feb 29 21:30 etcd-peer-csr.json
-rw------- 1 root root 1679 Feb 29 21:33 etcd-peer-key.pem
-rw-r--r-- 1 root root 1428 Feb 29 21:33 etcd-peer.pem

创建etcd用户

zdd211-12.host.com上操作

代码语言：javascript复制

[root@zdd211-12 ~]# useradd  -s  /sbin/nologin  -M etcd

下载etcd软件、解压，做软链接

我这下载的是：etcd-v3.1.20-linux-amd64.tar.gz 放入/opt/src

代码语言：javascript复制

[root@zdd211-12 ~]# cd /opt/
[root@zdd211-12 opt]# mkdir src
[root@zdd211-12 opt]# cd src
[root@zdd211-12 src]# wget https://github.com/etcd-io/etcd/releases/download/v3.1.20/etcd-v3.1.20-linux-amd64.tar.gz
[root@zdd211-12 src]# tar -xf  etcd-v3.1.20-linux-amd64.tar.gz -C /opt
[root@zdd211-12 src]# cd /opt/
[root@zdd211-12 opt]# mv etcd-v3.1.20-linux-amd64/ etcd-v3.1.20
[root@zdd211-12 opt]# ln -s /opt/etcd-v3.1.20/ /opt/etcd
[root@zdd211-12 opt]# ll
total 0
lrwxrwxrwx 1 root   root   18 Feb 29 21:53 etcd -> /opt/etcd-v3.1.20/
drwxr-xr-x 3 478493 89939 123 Oct 11  2018 etcd-v3.1.20
drwxr-xr-x 2 root   root   67 Feb 29 21:48 src
[root@zdd211-12 opt]# cd etcd

创建目录，拷贝证书、私钥

zdd211-12.host.com上：

代码语言：javascript复制

[root@zdd211-12 etcd]# mkdir -p /opt/etcd/certs /data/etcd /data/logs/etcd-server

拷贝证书

将运维主机上生成的ca.pem、etcd-peer-key.pem、etüd-peer.pem拷贝到/opt/etcd/certs目录中，注意四要文件权限600

代码语言：javascript复制

[root@zdd211-12 etcd]# cd certs/
[root@zdd211-12 certs]# scp zdd211-200:/opt/certs/ca.pem .
[root@zdd211-12 certs]# scp zdd211-200:/opt/certs/etcd-peer-key.pem .
[root@zdd211-12 certs]# scp zdd211-200:/opt/certs/etcd-peer.pem .
[root@zdd211-12 certs]# ll
total 12
-rw-r--r-- 1 root root 1342 Feb 29 22:01 ca.pem
-rw------- 1 root root 1679 Feb 29 22:05 etcd-peer-key.pem
-rw-r--r-- 1 root root 1428 Feb 29 22:05 etcd-peer.pem

修改权限

代码语言：javascript复制

[root@zdd211-12 certs]# chown -R etcd:etcd /opt/etcd/certs /data/etcd /data/logs/etcd-server
[root@zdd211-12 certs]# ls -l
total 12
-rw-r--r-- 1 etcd etcd 1342 Feb 29 22:01 ca.pem
-rw------- 1 etcd etcd 1679 Feb 29 22:05 etcd-peer-key.pem
-rw-r--r-- 1 etcd etcd 1428 Feb 29 22:05 etcd-peer.pem

创建etcd服务启动脚本

zdd211-12.host.com上：

代码语言：javascript复制

[root@zdd211-12 etcd]# vim etcd-server-startup.sh
#!/bin/sh
./etcd --name etcd-server-55-12 
       --data-dir /data/etcd/etcd-server 
       --listen-peer-urls https://10.211.55.12:2380 
       --listen-client-urls https://10.211.55.12:2379,http://127.0.0.1:2379 
       --quota-backend-bytes 8000000000 
       --initial-advertise-peer-urls https://10.211.55.12:2380 
       --advertise-client-urls https://10.211.55.12:2379,http://127.0.0.1:2379 
       --initial-cluster  etcd-server-55-12=https://10.211.55.12:2380,etcd-server-55-21=https://10.211.55.21:2380,etcd-server-55-22=https://10.211.55.22:2380 
       --ca-file ./certs/ca.pem 
       --cert-file ./certs/etcd-peer.pem 
       --key-file ./certs/etcd-peer-key.pem 
       --client-cert-auth  
       --trusted-ca-file ./certs/ca.pem 
       --peer-ca-file ./certs/ca.pem 
       --peer-cert-file ./certs/etcd-peer.pem 
       --peer-key-file ./certs/etcd-peer-key.pem 
       --peer-client-cert-auth 
       --peer-trusted-ca-file ./certs/ca.pem 
       --log-output stdout
[root@zdd211-12 etcd]# chmod   x  etcd-server-startup.sh
[root@zdd211-12 etcd]# chown  -R  etcd.etcd  /opt/etcd-v3.1.20/
[root@zdd211-12 etcd]# ll
total 30072
drwxr-xr-x  2 etcd etcd       66 Feb 29 22:05 certs
drwxr-xr-x 11 etcd etcd     4096 Oct 11  2018 Documentation
-rwxr-xr-x  1 etcd etcd 16406432 Oct 11  2018 etcd
-rwxr-xr-x  1 etcd etcd 14327712 Oct 11  2018 etcdctl
-rwxr-xr-x  1 etcd etcd     1006 Feb 29 22:14 etcd-server-startup.sh
-rw-r--r--  1 etcd etcd    32632 Oct 11  2018 README-etcdctl.md
-rw-r--r--  1 etcd etcd     5878 Oct 11  2018 README.md
-rw-r--r--  1 etcd etcd     7892 Oct 11  2018 READMEv2-etcdctl.md
[root@zdd211-12 etcd]# chown   -R etcd.etcd  /data/etcd/
[root@zdd211-12 etcd]# chown   -R etcd.etcd  /data/logs/etcd-server/

部署supervsiord进行服务管理

zdd211-12.host.com上：

管理后台进程软件

代码语言：javascript复制

[root@zdd211-12 etcd]# yum -y install  supervisor
[root@zdd211-12 etcd]# systemctl start supervisord
[root@zdd211-12 etcd]# systemctl enable supervisord
Created symlink from /etc/systemd/system/multi-user.target.wants/supervisord.service to /usr/lib/systemd/system/supervisord.service.

创建etcd-server的启动配置

zdd211-12.host.com上：

代码语言：javascript复制

[root@zdd211-12 etcd]# vim /etc/supervisord.d/etcd-server.ini
[program:etcd-server-211-12]
command=/opt/etcd/etcd-server-startup.sh                        ; the program (relative uses PATH, can take args)
numprocs=1                                                      ; number of processes copies to start (def 1)
directory=/opt/etcd                                             ; directory to cwd to before exec (def no cwd)
autostart=true                                                  ; start at supervisord start (default: true)
autorestart=true                                                ; retstart at unexpected quit (default: true)
startsecs=30                                                    ; number of secs prog must stay running (def. 1)
startretries=3                                                  ; max # of serial start failures (default 3)
exitcodes=0,2                                                   ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                 ; signal used to kill process (default TERM)
stopwaitsecs=10                                                 ; max num secs to wait b4 SIGKILL (default 10)
user=etcd                                                       ; setuid to this UNIX account to run the program
redirect_stderr=true                                            ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/etcd-server/etcd.stdout.log           ; stdout log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                    ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                        ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                     ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                     ; emit events on stdout writes (default false)

注意：etcd集群各主机启动配置略有不同，配置其他节点时注意修改

启动etcd服务并检查

代码语言：javascript复制

[root@zdd211-12 etcd]# supervisorctl update ##更新，启动
etcd-server-211-12: added process group
[root@zdd211-12 etcd]# supervisorctl status
etcd-server-211-12               STARTING
[root@zdd211-12 etcd]# tail -f /data/logs/etcd-server/etcd.stdout.log ##有问题可以查看日志
[root@zdd211-12 etcd]# supervisorctl status
etcd-server-211-12               RUNNING   pid 16207, uptime 0:00:42
[root@zdd211-12 etcd]# netstat -ntulp |grep etcd
tcp        0      0 10.211.55.12:2379       0.0.0.0:*               LISTEN      16208/./etcd
tcp        0      0 127.0.0.1:2379          0.0.0.0:*               LISTEN      16208/./etcd
tcp        0      0 10.211.55.12:2380       0.0.0.0:*               LISTEN      16208/./etcd

安装部署启动检查所有集群规划

检查集群状态

三个etcd节点都起来后：

代码语言：javascript复制

[root@zdd211-12 etcd]# ./etcdctl cluster-health
member b1a3627c0343c2c5 is healthy: got healthy result from http://127.0.0.1:2379
member bd1ce44b83380692 is healthy: got healthy result from http://127.0.0.1:2379
member f9c27963788aad6e is healthy: got healthy result from http://127.0.0.1:2379
cluster is healthy
[root@zdd211-12 etcd]# ./etcdctl member list
b1a3627c0343c2c5: name=etcd-server-55-21 peerURLs=https://10.211.55.21:2380 clientURLs=http://127.0.0.1:2379,https://10.211.55.21:2379 isLeader=false
bd1ce44b83380692: name=etcd-server-55-22 peerURLs=https://10.211.55.22:2380 clientURLs=http://127.0.0.1:2379,https://10.211.55.22:2379 isLeader=false
f9c27963788aad6e: name=etcd-server-55-12 peerURLs=https://10.211.55.12:2380 clientURLs=http://127.0.0.1:2379,https://10.211.55.12:2379 isLeader=true

3.2 部署kube-apiserver集群

集群规划

主机名	角色	ip
zdd211-21.host.com	Kube-apiserver	10.211.55.21
zdd211-22.host.com	Kube-apiserver	10.211.55.22
zdd211-11.host.com	4层负载均衡	10.211.55.11
zdd211-12.host.com	4层负载均衡	10.211.55.12

注意：这里10.211.55.11和10.211.55.12使用nginx做4层负载均衡器，用keepalive跑一个vip：10.211.55.10，代理两个kube-apiserver，实现高可用

这里部署文档以zdd211-21.host.com主机为例，另外一台运算节点安装部署方法类似

下载软件、解压、做软连接

zdd211-21.host.com上：

代码语言：javascript复制

[root@zdd211-21 src]# tar -xf  kubernetes-server-linux-amd64-v1.15.4.tar.gz  -C /opt/
[root@zdd211-21 src]# cd /opt/
[root@zdd211-21 opt]# mv kubernetes/ kubernetes-v1.15.4
[root@zdd211-21 opt]# ln -s /opt/kubernetes-v1.15.4/ /opt/kubernetes
[root@zdd211-21 opt]# ll
total 0
drwx--x--x  4 root root  28 Feb 29 20:45 containerd
lrwxrwxrwx  1 root root  18 Feb 29 23:18 etcd -> /opt/etcd-v3.1.20/
drwxr-xr-x  4 etcd etcd 166 Feb 29 23:27 etcd-v3.1.20
lrwxrwxrwx  1 root root  24 Mar  1 00:41 kubernetes -> /opt/kubernetes-v1.15.4/
drwxr-xr-x  4 root root  79 Sep 18 23:09 kubernetes-v1.15.4
drwxr-xr-x. 2 root root   6 Oct 31  2018 rh
drwxr-xr-x  2 root root  97 Mar  1 00:14 src
[root@zdd211-21 opt]# cd kubernetes
[root@zdd211-21 kubernetes]# ll
total 27196
drwxr-xr-x 2 root root        6 Sep 18 23:09 addons
-rw-r--r-- 1 root root 26639441 Sep 18 23:09 kubernetes-src.tar.gz
-rw-r--r-- 1 root root  1205293 Sep 18 23:09 LICENSES
drwxr-xr-x 3 root root       17 Sep 18 23:05 server
[root@zdd211-21 kubernetes]# rm -rf kubernetes-src.tar.gz
[root@zdd211-21 kubernetes]# cd server/bin/
[root@zdd211-21 bin]# ll
total 1549312
-rwxr-xr-x 1 root root  43538912 Sep 18 23:09 apiextensions-apiserver
-rwxr-xr-x 1 root root 100605984 Sep 18 23:09 cloud-controller-manager
-rw-r--r-- 1 root root         8 Sep 18 23:05 cloud-controller-manager.docker_tag
-rw-r--r-- 1 root root 144495104 Sep 18 23:05 cloud-controller-manager.tar
-rwxr-xr-x 1 root root 200722064 Sep 18 23:09 hyperkube
-rwxr-xr-x 1 root root  40186304 Sep 18 23:09 kubeadm
-rwxr-xr-x 1 root root 164563360 Sep 18 23:09 kube-apiserver
-rw-r--r-- 1 root root         8 Sep 18 23:05 kube-apiserver.docker_tag
-rw-r--r-- 1 root root 208452096 Sep 18 23:05 kube-apiserver.tar
-rwxr-xr-x 1 root root 116462624 Sep 18 23:09 kube-controller-manager
-rw-r--r-- 1 root root         8 Sep 18 23:05 kube-controller-manager.docker_tag
-rw-r--r-- 1 root root 160351744 Sep 18 23:05 kube-controller-manager.tar
-rwxr-xr-x 1 root root  42985504 Sep 18 23:09 kubectl
-rwxr-xr-x 1 root root 119690288 Sep 18 23:09 kubelet
-rwxr-xr-x 1 root root  36987488 Sep 18 23:09 kube-proxy
-rw-r--r-- 1 root root         8 Sep 18 23:05 kube-proxy.docker_tag
-rw-r--r-- 1 root root  84282368 Sep 18 23:05 kube-proxy.tar
-rwxr-xr-x 1 root root  38786144 Sep 18 23:09 kube-scheduler
-rw-r--r-- 1 root root         8 Sep 18 23:05 kube-scheduler.docker_tag
-rw-r--r-- 1 root root  82675200 Sep 18 23:05 kube-scheduler.tar
-rwxr-xr-x 1 root root   1648224 Sep 18 23:09 mounter
[root@zdd211-21 bin]# rm -rf *.tar
[root@zdd211-21 bin]# rm -rf *_tag
[root@zdd211-21 bin]# ll
total 884968
-rwxr-xr-x 1 root root  43538912 Sep 18 23:09 apiextensions-apiserver
-rwxr-xr-x 1 root root 100605984 Sep 18 23:09 cloud-controller-manager
-rwxr-xr-x 1 root root 200722064 Sep 18 23:09 hyperkube
-rwxr-xr-x 1 root root  40186304 Sep 18 23:09 kubeadm
-rwxr-xr-x 1 root root 164563360 Sep 18 23:09 kube-apiserver
-rwxr-xr-x 1 root root 116462624 Sep 18 23:09 kube-controller-manager
-rwxr-xr-x 1 root root  42985504 Sep 18 23:09 kubectl
-rwxr-xr-x 1 root root 119690288 Sep 18 23:09 kubelet
-rwxr-xr-x 1 root root  36987488 Sep 18 23:09 kube-proxy
-rwxr-xr-x 1 root root  38786144 Sep 18 23:09 kube-scheduler
-rwxr-xr-x 1 root root   1648224 Sep 18 23:09 mounter
[root@zdd211-21 bin]# mkdir certs
[root@zdd211-21 bin]# cd certs/

签发client证书

zdd211-200.host.com上：

创建生成证书签名请求的JSON配置文件

代码语言：javascript复制

[root@zdd211-200 certs]# cd /opt/certs/
[root@zdd211-200 certs]# vim client-csr.json
{
    "CN": "k8s-node",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}
[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-

生成client证书和私钥

代码语言：javascript复制

[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client client-csr.json |cfssl-json -bare client
2020/03/01 00:22:52 [INFO] generate received request
2020/03/01 00:22:52 [INFO] received CSR
2020/03/01 00:22:52 [INFO] generating key: rsa-2048
2020/03/01 00:22:52 [INFO] encoded CSR
2020/03/01 00:22:53 [INFO] signed certificate with serial number 260904771189188911312572941899563851435532977548
2020/03/01 00:22:53 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").

检查生成的证书、私钥

代码语言：javascript复制

[root@zdd211-200 certs]# ls -l |grep client
-rw-r--r-- 1 root root  993 Mar  1 00:22 client.csr
-rw-r--r-- 1 root root  280 Mar  1 00:22 client-csr.json
-rw------- 1 root root 1675 Mar  1 00:22 client-key.pem
-rw-r--r-- 1 root root 1363 Mar  1 00:22 client.pem

签发apiserver证书

zdd211-200.host.com上：

创建生成证书签名请求的JSON配置文件

代码语言：javascript复制

[root@zdd211-200 certs]# vim apiserver-csr.json
{
    "CN": "k8s-apiserver",
    "hosts": [
        "127.0.0.1",
        "192.168.0.1",
        "kubernetes.default",
        "kubernetes.default.svc",
        "kubernetes.default.svc.cluster",
        "kubernetes.default.svc.cluster.local",
        "10.211.55.10",
        "10.211.55.21",
        "10.211.55.22",
        "10.211.55.23",
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

生成apiserver证书和私钥

代码语言：javascript复制

[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server apiserver-csr.json |cfssl-json -bare apiserver
2020/03/01 00:34:18 [INFO] generate received request
2020/03/01 00:34:18 [INFO] received CSR
2020/03/01 00:34:18 [INFO] generating key: rsa-2048
2020/03/01 00:34:18 [INFO] encoded CSR
2020/03/01 00:34:18 [INFO] signed certificate with serial number 312812152997845240703964115854943008649545862358
2020/03/01 00:34:18 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").
[root@zdd211-200 certs]#

检查生成的证书、私钥

代码语言：javascript复制

[root@zdd211-200 certs]# ls -l |grep apiserver
-rw-r--r-- 1 root root 1257 Mar  1 00:34 apiserver.csr
-rw-r--r-- 1 root root  602 Mar  1 00:32 apiserver-csr.json
-rw------- 1 root root 1679 Mar  1 00:34 apiserver-key.pem
-rw-r--r-- 1 root root 1606 Mar  1 00:34 apiserver.pem

拷贝证书至各运算节点，并创建配置

zdd211-21.host.com上：

拷贝证书、私钥，注意私钥文件属性600

代码语言：javascript复制

[root@zdd211-21 certs]# pwd
/opt/kubernetes/server/bin/certs
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/ca.pem .
root@zdd211-200's password:
ca.pem                                                                          100% 1342     1.9MB/s   00:00
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/ca-key.pem .
root@zdd211-200's password:
ca-key.pem                                                                      100% 1679     2.3MB/s   00:00
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/client.pem .
root@zdd211-200's password:
client.pem                                                                      100% 1363     2.0MB/s   00:00
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/client-key.pem .
root@zdd211-200's password:
client-key.pem                                                                  100% 1675     2.3MB/s   00:00
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/apiserver.pem .
root@zdd211-200's password:
apiserver.pem                                                                   100% 1606     2.3MB/s   00:00
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/apiserver-key.pem .
root@zdd211-200's password:
apiserver-key.pem

检查证书、私钥

共3套证书和私钥

代码语言：javascript复制

[root@zdd211-21 certs]# ll
total 24
-rw------- 1 root root 1679 Mar  1 00:48 apiserver-key.pem
-rw-r--r-- 1 root root 1606 Mar  1 00:48 apiserver.pem
-rw------- 1 root root 1679 Mar  1 00:47 ca-key.pem
-rw-r--r-- 1 root root 1342 Mar  1 00:46 ca.pem
-rw------- 1 root root 1675 Mar  1 00:47 client-key.pem
-rw-r--r-- 1 root root 1363 Mar  1 00:47 client.pem

创建配置

代码语言：javascript复制

[root@zdd211-21 certs]# cd ..
[root@zdd211-21 bin]# mkdir conf
[root@zdd211-21 bin]# cd conf/
[root@zdd211-21 conf]# cat audit.yaml
apiVersion: audit.k8s.io/v1beta1 # This is required.
kind: Policy
# Don't generate audit events for all requests in RequestReceived stage.
omitStages:
  - "RequestReceived"
rules:
  # Log pod changes at RequestResponse level
  - level: RequestResponse
    resources:
    - group: ""
      # Resource "pods" doesn't match requests to any subresource of pods,
      # which is consistent with the RBAC policy.
      resources: ["pods"]
  # Log "pods/log", "pods/status" at Metadata level
  - level: Metadata
    resources:
    - group: ""
      resources: ["pods/log", "pods/status"]
  # Don't log requests to a configmap called "controller-leader"
  - level: None
    resources:
    - group: ""
      resources: ["configmaps"]
      resourceNames: ["controller-leader"]
  # Don't log watch requests by the "system:kube-proxy" on endpoints or services
  - level: None
    users: ["system:kube-proxy"]
    verbs: ["watch"]
    resources:
    - group: "" # core API group
      resources: ["endpoints", "services"]
  # Don't log authenticated requests to certain non-resource URL paths.
  - level: None
    userGroups: ["system:authenticated"]
    nonResourceURLs:
    - "/api*" # Wildcard matching.
    - "/version"
  # Log the request body of configmap changes in kube-system.
  - level: Request
    resources:
    - group: "" # core API group
      resources: ["configmaps"]
    # This rule only applies to resources in the "kube-system" namespace.
    # The empty string "" can be used to select non-namespaced resources.
    namespaces: ["kube-system"]
  # Log configmap and secret changes in all other namespaces at the Metadata level.
  - level: Metadata
    resources:
    - group: "" # core API group
      resources: ["secrets", "configmaps"]
  # Log all other resources in core and extensions at the Request level.
  - level: Request
    resources:
    - group: "" # core API group
    - group: "extensions" # Version of group should NOT be included.
  # A catch-all rule to log all other requests at the Metadata level.
  - level: Metadata
    # Long-running requests like watches that fall under this rule will not
    # generate an audit event in RequestReceived.
    omitStages:
      - "RequestReceived"

创建启动脚本

代码语言：javascript复制

[root@zdd211-21 conf]# cd ../
root@zdd211-21 bin]# vim kube-apiserver.sh
#!/bin/bash
./kube-apiserver 
  --apiserver-count 2 
  --audit-log-path /data/logs/kubernetes/kube-apiserver/audit-log 
  --audit-policy-file ./conf/audit.yaml 
  --authorization-mode RBAC 
  --client-ca-file ./certs/ca.pem 
  --requestheader-client-ca-file ./certs/ca.pem 
  --enable-admission-plugins NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,MutatingAdmissionWebhook,ValidatingAdmissionWebhook,ResourceQuota 
  --etcd-cafile ./certs/ca.pem 
  --etcd-certfile ./certs/client.pem 
  --etcd-keyfile ./certs/client-key.pem 
  --etcd-servers https://10.211.55.12:2379,https://10.211.55.21:2379,https://10.211.55.22:2379 
  --service-account-key-file ./certs/ca-key.pem 
  --service-cluster-ip-range 192.168.0.0/16 
  --service-node-port-range 3000-29999 
  --target-ram-mb=1024 
  --kubelet-client-certificate ./certs/client.pem 
  --kubelet-client-key ./certs/client-key.pem 
  --log-dir  /data/logs/kubernetes/kube-apiserver 
  --tls-cert-file ./certs/apiserver.pem 
  --tls-private-key-file ./certs/apiserver-key.pem 
  --v 2
  
[root@zdd211-21 bin]# ./kube-apiserver --help|grep -A 5 target-ram-mb ##可以查看参数解释
      --target-ram-mb int                            Memory limit for apiserver in MB (used to configure sizes of caches, etc.)

Etcd flags:

      --default-watch-cache-size int             Default watch cache size. If zero, watch cache will be disabled for resources that do not have a default watch size set. (default 100)
      --delete-collection-workers int            Number of workers spawned for DeleteCollection call. These are used to speed up namespace cleanup. (default 1)

调整权限和目录

代码语言：javascript复制

[root@zdd211-21 bin]# chmod   x  kube-apiserver.sh
[root@zdd211-21 bin]# mkdir -p /data/logs/kubernetes/kube-apiserver

创建supervisor配置

代码语言：javascript复制

[root@zdd211-21 bin]# vim /etc/supervisord.d/kube-apiserver.ini
[program:kube-apiserver-211-21]                                 ;根据实际情况更改
command=/opt/kubernetes/server/bin/kube-apiserver.sh            ; the program (relative uses PATH, can take args)
numprocs=1                                                      ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                            ; directory to cwd to before exec (def no cwd)
autostart=true                                                  ; start at supervisord start (default: true)
autorestart=true                                                ; retstart at unexpected quit (default: true)
startsecs=30                                                    ; number of secs prog must stay running (def. 1)
startretries=3                                                  ; max # of serial start failures (default 3)
exitcodes=0,2                                                   ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                 ; signal used to kill process (default TERM)
stopwaitsecs=10                                                 ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                       ; setuid to this UNIX account to run the program
redirect_stderr=true                                            ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-apiserver/apiserver.stdout.log        ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                    ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                        ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                     ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false

启动服务并检查

代码语言：javascript复制

[root@zdd211-21 bin]# supervisorctl  update
kube-apiserver-211-21: added process group
[root@zdd211-21 bin]# supervisorctl status
etcd-server-211-21               RUNNING   pid 16243, uptime 0:00:36
kube-apiserver-211-21            RUNNING   pid 16244, uptime 0:00:36

安装部署启动检查所有集群规划节点

配4层反向代理

zdd211-11和 zdd211-12操作，以 zdd211-11为例

nginx安装

代码语言：javascript复制

nginx配置

代码语言：javascript复制

[root@zdd211-11 ~]# vim /etc/nginx/nginx.conf  ##在配置文件的最底部
stream {
    upstream kube-apiserver {
        server 10.211.55.21:6443     max_fails=3 fail_timeout=30s;
        server 10.211.55.22:6443     max_fails=3 fail_timeout=30s;
    }
    server {
        listen 7443;
        proxy_connect_timeout 2s;
        proxy_timeout 900s;
        proxy_pass kube-apiserver;
    }
}

ngnix启动

代码语言：javascript复制

[root@zdd211-11 ~]# nginx  -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@zdd211-11 ~]# systemctl start nginx && systemctl enable nginx
Created symlink from /etc/systemd/system/multi-user.target.wants/nginx.service to /usr/lib/systemd/system/nginx.service.

keepalived配置

安装

代码语言：javascript复制

[root@zdd211-11 ~]# yum -y install keepalived

监听脚本

代码语言：javascript复制

[root@zdd211-11 ~]# vim /etc/keepalived/check_port.sh
#!/bin/bash
#keepalived 监控端口脚本
#使用方法：
#在keepalived的配置文件中
#vrrp_script check_port {#创建一个vrrp_script脚本,检查配置
#    script "/etc/keepalived/check_port.sh 6379" #配置监听的端口
#    interval 2 #检查脚本的频率,单位（秒）
#}
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
        PORT_PROCESS=`ss -lnt|grep $CHK_PORT|wc -l`
        if [ $PORT_PROCESS -eq 0 ];then
                echo "Port $CHK_PORT Is Not Used,End."
                exit 1
        fi
else
        echo "Check Port Cant Be Empty!"
fi
[root@zdd211-11 ~]# chmod   x /etc/keepalived/check_port.sh

keepalived主配置文件

代码语言：javascript复制

[root@zdd211-11 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
   router_id 10.211.55.11

}

vrrp_script chk_nginx {
    script "/etc/keepalived/check_port.sh 7443"
    interval 2
    weight -20
}

vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 251
    priority 100
    advert_int 1
    mcast_src_ip 10.211.55.11
    nopreempt    ##不抢VIP 机制

    authentication {
        auth_type PASS
        auth_pass 11111111
    }
    track_script {
         chk_nginx
    }
    virtual_ipaddress {
        10.211.55.10
    }
}
[root@zdd211-11 ~]systemctl start keepalived && systemctl enable keepalive
Created symlink from /etc/systemd/system/multi-user.target.wants/keepalived.service to /usr/lib/systemd/system/keepalived.service.

keepalived从配置文件

代码语言：javascript复制

[root@zdd211-12 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
        router_id 10.211.55.12
}
vrrp_script chk_nginx {
        script "/etc/keepalived/check_port.sh 7443"
        interval 2
        weight -20
}
vrrp_instance VI_1 {
        state BACKUP
        interface ens33
        virtual_router_id 251
        mcast_src_ip 10.211.55.12
        priority 90
        advert_int 1
        authentication {
                auth_type PASS
                auth_pass 11111111
        }
        track_script {
                chk_nginx
        }
        virtual_ipaddress {
                10.211.55.10
        }
}

[root@zdd211-12 ~]systemctl start keepalived && systemctl enable keepalive
Created symlink from /etc/systemd/system/multi-user.target.wants/keepalived.service to /usr/lib/systemd/system/keepalived.service.

启动代理并检查

代码语言：javascript复制

[root@zdd211-11 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:1c:42:b6:c5:48 brd ff:ff:ff:ff:ff:ff
    inet 10.211.55.11/24 brd 10.211.55.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet 10.211.55.10/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::c032:4140:7917:cf93/64 scope link tentative noprefixroute dadfailed
       valid_lft forever preferred_lft forever
    inet6 fe80::be6c:3cae:2851:9de9/64 scope link tentative noprefixroute dadfailed
       valid_lft forever preferred_lft forever
    inet6 fe80::e17c:787c:c2c1:540c/64 scope link tentative noprefixroute dadfailed
       valid_lft forever preferred_lft forever

3.3 部署controller-manager

集群规划

主机名	角色	ip
zdd211-21.host.com	kube-controller-manager	10.211.55.21
zdd211-22.host.com	kube-controller-manager	10.211.55.22

注意：这里部署文档以zdd211-21.host.com主机为例，另外一台运算节点安装部署方法类似

创建启动脚本

Zdd211-21.host.com上：

代码语言：javascript复制

[root@zdd211-21 bin]# pwd
/opt/kubernetes/server/bin
[root@zdd211-21 bin]# vim kube-controller-manager.sh
#!/bin/sh
./kube-controller-manager 
  --cluster-cidr 172.7.0.0/16 
  --leader-elect true 
  --log-dir /data/logs/kubernetes/kube-controller-manager 
  --master http://127.0.0.1:8080 
  --service-account-private-key-file ./certs/ca-key.pem 
  --service-cluster-ip-range 192.168.0.0/16 
  --root-ca-file ./certs/ca.pem 
  --v 2

调整文件权限，创建目录

代码语言：javascript复制

[root@zdd211-21 bin]# chmod   x  kube-controller-manager.sh
[root@zdd211-21 bin]# mkdir  -p  /data/logs/kubernetes
[root@zdd211-21 bin]# mkdir  -p  /data/logs/kubernetes/kube-controller-manager/

创建supervisor配置

代码语言：javascript复制

[root@zdd211-21 bin]# vim /etc/supervisord.d/kube-conntroller-manager.ini
[program:kube-controller-manager-211-21]
command=/opt/kubernetes/server/bin/kube-controller-manager.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                                        ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                              ; directory to cwd to before exec (def no cwd)
autostart=true                                                                    ; start at supervisord start (default: true)
autorestart=true                                                                  ; retstart at unexpected quit (default: true)
startsecs=30                                                                      ; number of secs prog must stay running (def. 1)
startretries=3                                                                    ; max # of serial start failures (default 3)
exitcodes=0,2                                                                     ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                                   ; signal used to kill process (default TERM)
stopwaitsecs=10                                                                   ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                                         ; setuid to this UNIX account to run the program
redirect_stderr=true                                                              ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-controller-manager/controller.stdout.log  ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                                      ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                                          ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                                       ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false

启动服务并检查

代码语言：javascript复制

[root@zdd211-21 bin]# supervisorctl  update
kube-controller-manager-211-21: added process group
[root@zdd211-21 bin]# supervisorctl  status
etcd-server-211-21               RUNNING   pid 16243, uptime 0:57:43
kube-apiserver-211-21            RUNNING   pid 16244, uptime 0:57:43
kube-controller-manager-211-21   RUNNING   pid 16513, uptime 0:01:03

安装部署启动检查所有集群规划主机上的kube-controller-manager服务

略

3.4 部署kube-scheduler

集群规划

主机名	角色	ip
zdd211-21.host.com	Kube-scheduler	10.211.55.21
zdd211-22.host.com	Kube-scheduler	10.211.55.22

注意：这里部署文档以zdd211-21.host.com主机为例，另外一台运算节点安装部署方法类似

创建启动脚本

Zdd211-21.host.com上：

代码语言：javascript复制

[root@zdd211-21 bin]# pwd
/opt/kubernetes/server/bin
[root@zdd211-21 bin]# vim kube-scheduler.sh
#!/bin/sh
./kube-scheduler 
  --leader-elect  
  --log-dir /data/logs/kubernetes/kube-scheduler 
  --master http://127.0.0.1:8080 
  --v 2

调整文件权限，创建目录

代码语言：javascript复制

[root@zdd211-21 bin]# chmod  x  kube-scheduler.sh
[root@zdd211-21 bin]# mkdir  -p  /data/logs/kubernetes/kube-scheduler

创建supervisor配置

代码语言：javascript复制

[root@zdd211-21 bin]# vim /etc/supervisord.d/kube-scheduler.ini
[program:kube-scheduler-211-21]
command=/opt/kubernetes/server/bin/kube-scheduler.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                               ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                     ; directory to cwd to before exec (def no cwd)
autostart=true                                                           ; start at supervisord start (default: true)
autorestart=true                                                         ; retstart at unexpected quit (default: true)
startsecs=30                                                             ; number of secs prog must stay running (def. 1)
startretries=3                                                           ; max # of serial start failures (default 3)
exitcodes=0,2                                                            ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                          ; signal used to kill process (default TERM)
stopwaitsecs=10                                                          ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                                ; setuid to this UNIX account to run the program
redirect_stderr=true                                                     ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-scheduler/scheduler.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                             ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                                 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                              ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false

启动服务并检查

代码语言：javascript复制

[root@zdd211-21 bin]# supervisorctl  update
kube-controller-manager-211-21: added process group
[root@zdd211-21 bin]# supervisorctl  status
etcd-server-211-21               RUNNING   pid 16243, uptime 0:57:43
kube-apiserver-211-21            RUNNING   pid 16244, uptime 0:57:43
kube-controller-manager-211-21   RUNNING   pid 16513, uptime 0:01:03

安装部署启动检查所有集群规划主机上的kube-controller-manager服务

略

3.5 检查主控节点

代码语言：javascript复制

[root@zdd211-21 bin]# ln -s /opt/kubernetes/server/bin/kubectl   /usr/bin/kubectl
[root@zdd211-21 bin]# which kubectl
/usr/bin/kubectl
[root@zdd211-21 bin]# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok
controller-manager   Healthy   ok
etcd-0               Healthy   {"health": "true"}
etcd-1               Healthy   {"health": "true"}
etcd-2               Healthy   {"health": "true"}

4.部署Node节点服务

4.1 部署kubelet

集群规划

主机名	角色	ip
zdd211-21.host.com	kubelet	10.211.55.21
zdd211-22.host.com	kubelet	10.211.55.22

注意：这里部署文档以zdd211-21.host.com主机为例，另外一台运算节点安装部署方法类似

签发证书

运维主机zdd211-200.host.com上：

创建生成证书签名请求的JSON配置文件

代码语言：javascript复制

[root@zdd211-200 certs]# vim kubelet-csr.json
{
    "CN": "k8s-kubelet",
    "hosts": [
    "127.0.0.1",
    "10.211.55.10",
    "10.211.55.21",
    "10.211.55.22",
    "10.211.55.23",
    "10.211.55.24",
    "10.211.55.25",
    "10.211.55.26",
    "10.211.55.27",
    "10.211.55.28"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

生成kubelet证书和私钥

代码语言：javascript复制

[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=server kubelet-csr.json | cfssl-json -bare kubelet
2020/03/01 02:43:04 [INFO] generate received request
2020/03/01 02:43:04 [INFO] received CSR
2020/03/01 02:43:04 [INFO] generating key: rsa-2048
2020/03/01 02:43:05 [INFO] encoded CSR
2020/03/01 02:43:05 [INFO] signed certificate with serial number 87704427073277495803939532855812728907884442069
2020/03/01 02:43:05 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").

检查生成的证书，私钥

代码语言：javascript复制

[root@zdd211-200 certs]# ls -l|grep kubelet
-rw-r--r-- 1 root root 1115 Mar  1 02:43 kubelet.csr
-rw-r--r-- 1 root root  479 Mar  1 02:37 kubelet-csr.json
-rw------- 1 root root 1679 Mar  1 02:43 kubelet-key.pem
-rw-r--r-- 1 root root 1464 Mar  1 02:43 kubelet.pem

拷贝证书至各运算节点，并创建配置

zdd211-21.host.com 操作

拷贝证书，私钥，注意私钥文件属性600

代码语言：javascript复制

[root@zdd211-21 certs]# pwd
/opt/kubernetes/server/bin/certs
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/kubelet.pem .
root@zdd211-200's password:
kubelet.pem
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/kubelet-key.pem .
root@zdd211-200's password:
kubelet-key.pem
[root@zdd211-21 certs]# ll
total 32
-rw------- 1 root root 1679 Mar  1 00:48 apiserver-key.pem
-rw-r--r-- 1 root root 1606 Mar  1 00:48 apiserver.pem
-rw------- 1 root root 1679 Mar  1 00:47 ca-key.pem
-rw-r--r-- 1 root root 1342 Mar  1 00:46 ca.pem
-rw------- 1 root root 1675 Mar  1 00:47 client-key.pem
-rw-r--r-- 1 root root 1363 Mar  1 00:47 client.pem
-rw------- 1 root root 1679 Mar  1 02:46 kubelet-key.pem
-rw-r--r-- 1 root root 1464 Mar  1 02:45 kubelet.pem
[root@zdd211-21 certs]# cd ..
[root@zdd211-21 bin]# cd conf/

创建配置分发证书

分发证书到 zdd211-21 、zdd211-22 ##这里只需要在一个节点上操作一次

set-cluster

注意：在conf目录下

代码语言：javascript复制

kubectl config set-cluster myk8s 
 --certificate-authority=/opt/kubernetes/server/bin/certs/ca.pem 
   --embed-certs=true 
   --server=https://10.211.55.10:7443
   --kubeconfig=kubelet.kubeconfig

Set-credentials

注意：在conf目录下

代码语言：javascript复制

kubectl config set-credentials k8s-node 
   --client-certificate=/opt/kubernetes/server/bin/certs/client.pem 
   --client-key=/opt/kubernetes/server/bin/certs/client-key.pem 
   --embed-certs=true 
   --kubeconfig=kubelet.kubeconfig

Set-context

代码语言：javascript复制

kubectl config set-context myk8s-context 
   --cluster=myk8s 
   --user=k8s-node 
   --kubeconfig=kubelet.kubeconfig

Use-context

代码语言：javascript复制

[root@zdd211-21 conf]# kubectl config use-context myk8s-context --kubeconfig=kubelet.kubeconfig
Switched to context "myk8s-context".

授权K8s node角色

代码语言：javascript复制

[root@zdd211-21 conf]# vim k8s-node.yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: k8s-node
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: system:node
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: k8s-node
[root@zdd211-21 conf]# kubectl create -f k8s-node.yaml
clusterrolebinding.rbac.authorization.k8s.io/k8s-node created
[root@zdd211-21 conf]# kubectl get clusterrolebinding k8s-node
NAME       AGE
k8s-node   61s

拷贝配置到另一个节点

zdd211-22.host.com 操作

代码语言：javascript复制

[root@zdd211-22 conf]# pwd
/opt/kubernetes/server/bin/conf
[root@zdd211-22 conf]# scp zdd211-21:/opt/kubernetes/server/bin/conf/kubelet.kubeconfig .
[root@zdd211-22 conf]# ll
total 12
-rw------- 1 root root 2237 Mar  1 01:26 audit.yaml
-rw------- 1 root root 6194 Mar  1 03:12 kubelet.kubeconfig

准备pause基础镜像

zdd211-200.host.com上操作

代码语言：javascript复制

[root@zdd211-200 certs]# docker pull  kubernetes/pause
[root@zdd211-200 certs]# docker images |grep kubernetes
kubernetes/pause                latest                     f9d5de079539        5 years ago
[root@zdd211-200 certs]# docker tag f9d5de079539 harbor.od.com/public/pause:latest
[root@zdd211-200 certs]# docker push harbor.od.com/public/pause:latest

创建kubelet启动脚本

代码语言：javascript复制

[root@zdd211-21 bin]# pwd
/opt/kubernetes/server/bin
[root@zdd211-21 bin]# vim kubelet.sh
#!/bin/sh
./kubelet 
  --anonymous-auth=false 
  --cgroup-driver systemd 
  --cluster-dns 192.168.0.2 
  --cluster-domain cluster.local 
  --runtime-cgroups=/systemd/system.slice 
  --kubelet-cgroups=/systemd/system.slice 
  --fail-swap-on="false" 
  --client-ca-file ./certs/ca.pem 
  --tls-cert-file ./certs/kubelet.pem 
  --tls-private-key-file ./certs/kubelet-key.pem 
  --hostname-override zdd211-21.host.com 
  --image-gc-high-threshold 20 
  --image-gc-low-threshold 10 
  --kubeconfig ./conf/kubelet.kubeconfig 
  --log-dir /data/logs/kubernetes/kube-kubelet 
  --pod-infra-container-image harbor.od.com/public/pause:latest 
  --root-dir /data/kubelet

检查配置，权限，创建日志目录

代码语言：javascript复制

[root@zdd211-21 bin]# mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet
[root@zdd211-21 bin]# chmod   x  kubelet.sh

创建supervisor配置

zdd211-21.host.com上操作

代码语言：javascript复制

[root@zdd211-21 bin]# vim /etc/supervisord.d/kube-kubelet.ini
[program:kube-kubelet-211-21]
command=/opt/kubernetes/server/bin/kubelet.sh     ; the program (relative uses PATH, can take args)
numprocs=1                                        ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin              ; directory to cwd to before exec (def no cwd)
autostart=true                                    ; start at supervisord start (default: true)
autorestart=true              		          ; retstart at unexpected quit (default: true)
startsecs=30                                      ; number of secs prog must stay running (def. 1)
startretries=3                                    ; max # of serial start failures (default 3)
exitcodes=0,2                                     ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                   ; signal used to kill process (default TERM)
stopwaitsecs=10                                   ; max num secs to wait b4 SIGKILL (default 10)
user=root                                         ; setuid to this UNIX account to run the program
redirect_stderr=true                              ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-kubelet/kubelet.stdout.log   ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                      ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                          ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                       ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                       ; emit events on stdout writes (default false)

kubectl create clusterrolebinding kubelet-bootstrap 
--clusterrole=system:node-bootstrapper 
--user=kubelet-bootstrap

启动服务并检查

代码语言：javascript复制

[root@zdd211-21 bin]# supervisorctl  update
kube-kubelet-211-21: added process group
[root@zdd211-21 bin]# supervisorctl status
etcd-server-211-21               RUNNING   pid 19731, uptime 2:41:09
kube-apiserver-211-21            RUNNING   pid 19729, uptime 2:41:09
kube-controller-manager-211-21   RUNNING   pid 19736, uptime 2:41:09
kube-kubelet-211-21              RUNNING   pid 19735, uptime 2:41:09
kube-scheduler-211-21            RUNNING   pid 19733, uptime 2:41:09

检查运算节点

代码语言：javascript复制

[root@zdd211-21 bin]# kubectl get node
NAME                 STATUS   ROLES    AGE    VERSION
zdd211-21.host.com   Ready    <none>   172m   v1.15.4

安装部署启动检查所有集群规划主机上的kubelet服务

另外一个node节点zdd211-22.host.com可以根据上面的的步骤进行部署，注意修改配置文件中主机名

检查所有运算节点

代码语言：javascript复制

[root@zdd211-22 bin]# supervisorctl  update
kube-kubelet-211-22: added process group
[root@zdd211-22 bin]# supervisorctl status
etcd-server-211-22               RUNNING   pid 16026, uptime 15:39:10
kube-apiserver-211-22            RUNNING   pid 16245, uptime 13:53:58
kube-controller-manager-211-22   RUNNING   pid 18498, uptime 10:54:38
kube-kubelet-211-22              RUNNING   pid 23091, uptime 0:19:50
kube-scheduler-211-22            RUNNING   pid 18505, uptime 10:54:38
[root@zdd211-21 bin]# kubectl get node
NAME                 STATUS   ROLES    AGE    VERSION
zdd211-21.host.com   Ready    <none>   172m   v1.15.4
zdd211-22.host.com   Ready    <none>   16m    v1.15.4

给node添加标签

代码语言：javascript复制

[root@zdd211-21 bin]# kubectl label node zdd211-21.host.com node-role.kubernetes.io/node=
node/zdd211-21.host.com labeled
[root@zdd211-21 bin]# kubectl get node
NAME                 STATUS   ROLES    AGE    VERSION
zdd211-21.host.com   Ready    node     177m   v1.15.4
zdd211-22.host.com   Ready    <none>   21m    v1.15.4
[root@zdd211-21 bin]# kubectl label node zdd211-21.host.com node-role.kubernetes.io/master=
node/zdd211-21.host.com labeled
[root@zdd211-21 bin]# kubectl get node
NAME                 STATUS   ROLES         AGE    VERSION
zdd211-21.host.com   Ready    master,node   178m   v1.15.4
zdd211-22.host.com   Ready    <none>        22m    v1.15.4
[root@zdd211-21 bin]# kubectl label node zdd211-22.host.com node-role.kubernetes.io/node=
node/zdd211-22.host.com labeled
[root@zdd211-21 bin]# kubectl label node zdd211-22.host.com node-role.kubernetes.io/master=
node/zdd211-22.host.com labeled
[root@zdd211-21 bin]# kubectl get node
NAME                 STATUS   ROLES         AGE    VERSION
zdd211-21.host.com   Ready    master,node   178m   v1.15.4
zdd211-22.host.com   Ready    master,node   22m    v1.15.4

4.2 部署kube-proxy

集群规划

主机名	角色	ip
zdd211-21.host.com	kube-proxy	10.211.55.21
zdd211-22.host.com	kube-proxy	10.211.55.22

注意：这里部署文档以zdd211-21.host.com主机为例，另外一台运算节点安装部署方法类似

签发证书

创建生成证书签名请求的JSON配置文件

代码语言：javascript复制

kube-proxy-csr.json
{
    "CN": "system:kube-proxy",
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}

生成kube-proxy证书和私钥

代码语言：javascript复制

[root@zdd211-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client kube-proxy-csr.json |cfssl-json -bare kube-proxy-client
2020/03/01 03:52:35 [INFO] generate received request
2020/03/01 03:52:35 [INFO] received CSR
2020/03/01 03:52:35 [INFO] generating key: rsa-2048
2020/03/01 03:52:35 [INFO] encoded CSR
2020/03/01 03:52:35 [INFO] signed certificate with serial number 489461653582417608550059955294808367031662016464
2020/03/01 03:52:35 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").

检查生成的证书，私钥

代码语言：javascript复制

[root@zdd211-200 certs]# ls -l|grep kube-proxy
-rw-r--r-- 1 root root 1005 Mar  1 03:52 kube-proxy-client.csr
-rw------- 1 root root 1679 Mar  1 03:52 kube-proxy-client-key.pem
-rw-r--r-- 1 root root 1375 Mar  1 03:52 kube-proxy-client.pem
-rw-r--r-- 1 root root  267 Mar  1 03:49 kube-proxy-csr.json

拷贝证书至各运算节点，并创建配置

zdd211-21.host.com 操作

拷贝证书，私钥，注意私钥文件属性600

代码语言：javascript复制

[root@zdd211-21 certs]# pwd
/opt/kubernetes/server/bin/certs
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/kube-proxy-client.pem .
root@zdd211-200's password:
kube-proxy-client.pem
[root@zdd211-21 certs]# scp  zdd211-200:/opt/certs/kube-proxy-client-key.pem .
root@zdd211-200's password:
kube-proxy-client-key.pem
[root@zdd211-21 certs]# ls -l|grep kube-proxy
-rw------- 1 root root 1679 Mar  1 03:55 kube-proxy-client-key.pem
-rw-r--r-- 1 root root 1375 Mar  1 03:54 kube-proxy-client.pem
[root@zdd211-21 certs]# cd ..
[root@zdd211-21 bin]# cd conf/

创建kube-proxy分发证书配置文件

分发证书到 zdd211-21 、zdd211-22 ##这里只需要在一个节点上操作一次

set-cluster

注意：在conf目录下

代码语言：javascript复制

kubectl config set-cluster myk8s 
   --certificate-authority=/opt/kubernetes/server/bin/certs/ca.pem 
   --embed-certs=true 
   --server=https://10.211.55.10:7443 
   --kubeconfig=kube-proxy.kubeconfig

Set-credentials

注意：在conf目录下

代码语言：javascript复制

kubectl config set-credentials kube-proxy 
   --client-certificate=/opt/kubernetes/server/bin/certs/kube-proxy-client.pem 
   --client-key=/opt/kubernetes/server/bin/certs/kube-proxy-client-key.pem 
   --embed-certs=true 
   --kubeconfig=kube-proxy.kubeconfig

Set-context

代码语言：javascript复制

kubectl config set-context myk8s-context 
   --cluster=myk8s 
   --user=kube-proxy 
   --kubeconfig=kube-proxy.kubeconfig

Use-context

代码语言：javascript复制

[root@zdd211-21 conf]# kubectl config use-context myk8s-context --kubeconfig=kube-proxy.kubeconfig
Switched to context "myk8s-context".

K8s node角色绑定

拷贝配置到另一个节点

zdd211-22.host.com 操作

代码语言：javascript复制

[root@zdd211-22 conf]# pwd
/opt/kubernetes/server/bin/conf
[root@zdd211-22 conf]# scp zdd211-21:/opt/kubernetes/server/bin/conf/kube-proxy.kubeconfig .
[root@zdd211-22 conf]# ll
total 20
-rw------- 1 root root 2237 Mar  1 01:26 audit.yaml
-rw------- 1 root root 6194 Mar  1 03:12 kubelet.kubeconfig
-rw------- 1 root root 6218 Mar  1 04:02 kube-proxy.kubeconfig

加载ipvs模块

zdd211-21.host.com上操作

代码语言：javascript复制

[root@zdd211-21 conf]# cd
[root@zdd211-21 ~]# vim ipvs.sh
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir|grep -o "^[^.]*")
do
  /sbin/modinfo -F filename $i &>/dev/null
  if [ $? -eq 0 ];then
    /sbin/modprobe $i
  fi
done
[root@zdd211-21 ~]# chmod  x ipvs.sh
[root@zdd211-21 ~]# ./ipvs.sh
[root@zdd211-21 ~]# lsmod | grep ip_vs
ip_vs_wrr              12697  0
ip_vs_wlc              12519  0
ip_vs_sh               12688  0
ip_vs_sed              12519  0
ip_vs_rr               12600  0
ip_vs_pe_sip           12740  0
nf_conntrack_sip       33860  1 ip_vs_pe_sip
ip_vs_nq               12516  0
ip_vs_lc               12516  0
ip_vs_lblcr            12922  0
ip_vs_lblc             12819  0
ip_vs_ftp              13079  0
ip_vs_dh               12688  0
ip_vs                 145497  24 ip_vs_dh,ip_vs_lc,ip_vs_nq,ip_vs_rr,ip_vs_sh,ip_vs_ftp,ip_vs_sed,ip_vs_wlc,ip_vs_wrr,ip_vs_pe_sip,ip_vs_lblcr,ip_vs_lblc
nf_nat                 26787  3 ip_vs_ftp,nf_nat_ipv4,nf_nat_masquerade_ipv4
nf_conntrack          133095  8 ip_vs,nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_netlink,nf_conntrack_sip,nf_conntrack_ipv4
libcrc32c              12644  4 xfs,ip_vs,nf_nat,nf_conntrack

创建kube-proxy启动脚本

代码语言：javascript复制

[root@zdd211-21 ~]# cd /opt/kubernetes/server/bin/
[root@zdd211-21 bin]# vim kube-proxy.sh
#!/bin/sh
./kube-proxy 
  --cluster-cidr 172.7.0.0/16 
  --hostname-override zdd211-21.host.com 
  --proxy-mode=ipvs 
  --ipvs-scheduler=nq 
  --kubeconfig ./conf/kube-proxy.kubeconfig

检查配置，权限，创建日志目录

代码语言：javascript复制

[root@zdd211-21 bin]# chmod  x kube-proxy.sh
[root@zdd211-21 bin]# mkdir -p /data/logs/kubernetes/kube-proxy

创建supervisor配置

zdd211-21.host.com上操作

代码语言：javascript复制

[root@zdd211-21 bin]# vim /etc/supervisord.d/kube-proxy.ini
[program:kube-proxy-211-21]
command=/opt/kubernetes/server/bin/kube-proxy.sh                     ; the program (relative uses PATH, can take args)
numprocs=1                                                           ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin                                 ; directory to cwd to before exec (def no cwd)
autostart=true                                                       ; start at supervisord start (default: true)
autorestart=true                                                     ; retstart at unexpected quit (default: true)
startsecs=30                                                         ; number of secs prog must stay running (def. 1)
startretries=3                                                       ; max # of serial start failures (default 3)
exitcodes=0,2                                                        ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT                                                      ; signal used to kill process (default TERM)
stopwaitsecs=10                                                      ; max num secs to wait b4 SIGKILL (default 10)
user=root                                                            ; setuid to this UNIX account to run the program
redirect_stderr=true                                                 ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-proxy/proxy.stdout.log     ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB                                         ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4                                             ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB                                          ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false                                          ; emit events on stdout writes (default false)

启动服务并检查

代码语言：javascript复制

[root@zdd211-21 bin]# supervisorctl  update
kube-proxy-211-21: added process group
[root@zdd211-21 bin]# supervisorctl status
etcd-server-211-21               RUNNING   pid 19731, uptime 2:41:09
kube-apiserver-211-21            RUNNING   pid 19729, uptime 2:41:09
kube-controller-manager-211-21   RUNNING   pid 19736, uptime 2:41:09
kube-kubelet-211-21              RUNNING   pid 19735, uptime 2:41:09
kube-proxy-211-21                RUNNING   pid 22344, uptime 0:02:20
kube-scheduler-211-21            RUNNING   pid 19733, uptime 2:41:09

检查运算节点

代码语言：javascript复制

[root@zdd211-21 bin]#yum -y install ipvsadm
[root@zdd211-21 bin]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.0.1:443 nq
  -> 10.211.55.21:6443            Masq    1      0          0
  -> 10.211.55.22:6443            Masq    1      0          0

安装部署启动检查所有集群规划主机上的kubelet服务

方法可以参考zdd211-21进行部署，需要需要修改配置文件中的主机名

检查所有运算节点

代码语言：javascript复制

[root@zdd211-22 bin]# supervisorctl status
etcd-server-211-22               RUNNING   pid 16026, uptime 15:30:58
kube-apiserver-211-22            RUNNING   pid 16245, uptime 13:45:46
kube-controller-manager-211-22   RUNNING   pid 18498, uptime 10:46:26
kube-kubelet-211-22              RUNNING   pid 23091, uptime 0:11:38
kube-proxy-211-22                RUNNING   pid 25108, uptime 0:02:55
kube-scheduler-211-22            RUNNING   pid 18505, uptime 10:46:26
[root@zdd211-22 bin]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.0.1:443 nq
  -> 10.211.55.21:6443            Masq    1      0          0
  -> 10.211.55.22:6443            Masq    1      0          0

5.验证kubernetes集群

5.1 在任意一个运算节点，创建一个资源配置清单

代码语言：javascript复制

[root@zdd211-21 ~]# pwd
/root
[root@zdd211-21 ~]# cat nginx-ds.yaml
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: nginx-ds
spec:
  template:
    metadata:
      labels:
        app: nginx-ds
    spec:
      containers:
      - name: my-nginx
        image: harbor.od.com/public/nginx:v1.7.9
        ports:
        - containerPort: 80
[root@zdd211-21 ~]# kubectl create -f nginx-ds.yaml
daemonset.extensions/nginx-ds created

5.2 应用资源配置，并检查

代码语言：javascript复制

[root@zdd211-21 ~]# kubectl get pods
NAME             READY   STATUS    RESTARTS   AGE
nginx-ds-8r8sc   1/1     Running   0          115s
nginx-ds-pdznf   1/1     Running   0          115s
[root@zdd211-21 ~]# kubectl get pods -o wide
NAME             READY   STATUS    RESTARTS   AGE    IP           NODE                 NOMINATED NODE   READINESS GATES
nginx-ds-8r8sc   1/1     Running   0          2m5s   172.7.22.2   zdd211-22.host.com   <none>           <none>
nginx-ds-pdznf   1/1     Running   0          2m5s   172.7.21.2   zdd211-21.host.com   <none>           <none>
[root@zdd211-21 ~]# curl 172.7.22.2 ##没有信息回应
^C
[root@zdd211-21 ~]# curl 172.7.21.2 ## 有信息回应

由于还没安装网络插件，不同主机上的pod之间不能互相访问

zdd211-21、zdd211-22今天的部署到以下的结果，，就算部署完成

代码语言：javascript复制

[root@zdd211-21 ~]# kubectl get cs
NAME                 STATUS    MESSAGE              ERROR
scheduler            Healthy   ok
controller-manager   Healthy   ok
etcd-0               Healthy   {"health": "true"}
etcd-2               Healthy   {"health": "true"}
etcd-1               Healthy   {"health": "true"}
[root@zdd211-21 ~]# kubectl get node
NAME                 STATUS   ROLES         AGE    VERSION
zdd211-21.host.com   Ready    master,node   3h5m   v1.15.4
zdd211-22.host.com   Ready    master,node   29m    v1.15.4
[root@zdd211-21 ~]# kubectl get pods
NAME             READY   STATUS    RESTARTS   AGE
nginx-ds-8r8sc   1/1     Running   0          5m21s
nginx-ds-pdznf   1/1     Running   0          5m21s

https etcd

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