一、k8s二进制方式多节点部署
要先部署单节点集群，可查阅我前一篇博客
1、环境介绍
下面拓扑图还有一个harbor仓库没有说明，到时候部署在单独的一台服务器上即可
主机分配
.2、master02节点操作
开局优化
关闭防火墙，关闭核心防护，关闭网络管理功能（生成环境中一定要关闭它）
代码语言：javascript复制[root@localhost ~]# hostnamectl set-hostname master02 '//修改主机名'
[root@localhost ~]# su
[root@master02 ~]#
[root@master02 ~]# systemctl stop firewalld && systemctl disable firewalld '//关闭防火墙'
Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service.
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
[root@master02 ~]# setenforce 0 && sed -i "s/SELINUX=enforcing/SELNIUX=disabled/g" /etc/selinux/config '//关闭核心防护'
[root@master02 ~]# systemctl stop NetworkManager && systemctl disable NetworkManager '//关闭网络管理功能'
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.
Removed symlink /etc/systemd/system/network-online.target.wants/NetworkManager-wait-online.service.master节点操作，将master节点的kubernetes配置文件和启动脚本复制到master02节点
代码语言：javascript复制[root@master ~]# scp -r /opt/kubernetes/ root@192.168.233.130:/opt/
[root@master ~]# scp /usr/lib/systemd/system/{kube-apiserver,kube-controller-manager,kube-scheduler}.service root@192.168.233.130:/usr/lib/systemd/system/master02上修改apiserver配置文件中的IP地址
代码语言：javascript复制[root@master02 ~]# cd /opt/kubernetes/cfg/
[root@master02 cfg]# ls
kube-apiserver kube-controller-manager kube-scheduler token.csv
[root@master02 cfg]# vim kube-apiserver
KUBE_APISERVER_OPTS="--logtostderr=true
--v=4
--etcd-servers=https://192.168.233.131:2379,https://192.168.233.132:2379,https://192.168.233.133:2379
--bind-address=192.168.233.130 '//修改此处的绑定IP地址'
--secure-port=6443
--advertise-address=192.168.233.130 '//修改此处的IP地址'
...省略将master节点的etcd证书复制到master02节点（master02上一定要有etcd证书，用来与etcd通信）
代码语言：javascript复制[root@master ~]# scp -r /opt/etcd/ root@192.168.233.130:/opt
1
master02节点查看etcd证书，并启动三个服务
[root@master02 ~]# tree /opt/etcd
/opt/etcd
├── bin
│ ├── etcd
│ └── etcdctl
├── cfg
│ └── etcd
└── ssl
├── ca-key.pem
├── ca.pem
├── server-key.pem
└── server.pem
3 directories, 7 files
[root@master02 ~]# systemctl start kube-apiserver.service
[root@master02 ~]# systemctl status kube-apiserver.service
[root@master02 ~]# systemctl enable kube-apiserver.service
[root@master02 ~]# systemctl start kube-controller-manager.service
[root@master02 ~]# systemctl status kube-controller-manager.service
[root@master02 ~]# systemctl enable kube-controller-manager.service
[root@master02 ~]# systemctl enable kube-scheduler.service
[root@master02 ~]# systemctl start kube-scheduler.service
[root@master02 ~]# systemctl status kube-scheduler.service添加环境变量并查看状态
代码语言：javascript复制[root@master02 ~]# echo export PATH=$PATH:/opt/kubernetes/bin >> /etc/profile
[root@master02 ~]# source /etc/profile
[root@master02 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.233.132 Ready <none> 23h v1.12.3
192.168.233.133 Ready <none> 23h v1.12.32、nginx负载均衡集群部署
两个nginx主机开局优化（仅展示nginx01的操作）：关闭防火墙和核心防护，编辑nginx yum源
代码语言：javascript复制[root@localhost ~]# hostnamectl set-hostname nginx01 '//修改主机吗'
[root@localhost ~]# su
[root@nginx01 ~]#
[root@nginx01 ~]# systemctl stop firewalld && systemctl disable firewalld '//关闭防火墙与核心防护'
[root@nginx01 ~]# setenforce 0 && sed -i "s/SELINUX=enforcing/SELNIUX=disabled/g" /etc/selinux/config
[root@nginx01 ~]# vi /etc/yum.repos.d/nginx.repo '//编辑nginx的yum源'
[nginx]
name=nginx.repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
enabled=1
gpgcheck=0
[root@nginx01 ~]# yum clean all
[root@nginx01 ~]# yum makecache两台nginx主机安装nginx并开启四层转发（仅展示nginx01的操作）
代码语言：javascript复制[root@nginx01 ~]# yum -y install nginx '//安装nginx'
[root@nginx01 ~]# vi /etc/nginx/nginx.conf
...省略内容
13 stream {
14
15 log_format main '$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent';
16 access_log /var/log/nginx/k8s-access.log main; ##指定日志目录
17
18 upstream k8s-apiserver {
19 #此处为master的ip地址和端口
20 server 192.168.233.131:6443; '//6443是apiserver的端口号'
21 #此处为master02的ip地址和端口
22 server 192.168.233.130:6443;
23 }
24 server {
25 listen 6443;
26 proxy_pass k8s-apiserver;
27 }
28 }
。。。省略内容启动nginx服务
代码语言：javascript复制[root@nginx01 ~]# nginx -t '//检查nginx语法'
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@nginx01 ~]# systemctl start nginx '//开启服务'
[root@nginx01 ~]# systemctl status nginx
[root@nginx01 ~]# netstat -ntap |grep nginx '//会检测出来6443端口'
tcp 0 0 0.0.0.0:6443 0.0.0.0:* LISTEN 1849/nginx: master
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1849/nginx: master 两台nginx主机部署keepalived服务（仅展示nginx01的操作）
代码语言：javascript复制[root@nginx01 ~]# yum -y install keepalived
[root@nginx01 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
# 接收邮件地址
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
# 邮件发送地址
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id NGINX_MASTER
}
vrrp_script check_nginx {
script "/usr/local/nginx/sbin/check_nginx.sh" '//keepalived服务检查脚本的位置'
}
vrrp_instance VI_1 {
state MASTER '//nginx02设置为BACKUP'
interface ens33
virtual_router_id 51 '//nginx02可设置为52'
priority 100 '//优先级，nginx02设置 90'
advert_int 1 '//指定VRRP 心跳包通告间隔时间，默认1秒 '
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.233.100/24 '//VIP地址'
}
track_script {
check_nginx
}
}创建监控脚本，启动keepalived服务，查看VIP地址
代码语言：javascript复制[root@nginx01 ~]# mkdir -p /usr/local/nginx/sbin/ '//创建监控脚本目录'
[root@nginx01 ~]# vim /usr/local/nginx/sbin/check_nginx.sh '//编写监控脚本配置文件'
count=$(ps -ef |grep nginx |egrep -cv "grep|$$")
if [ "$count" -eq 0 ];then
systemctl stop keepalived
fi
[root@nginx01 ~]# chmod x /usr/local/nginx/sbin/check_nginx.sh '//给权限'
[root@nginx01 ~]# systemctl start keepalived '//开启服务'
[root@nginx01 ~]# systemctl status keepalived
[root@nginx01 ~]# ip a '//两个nginx服务器查看IP地址'
VIP在nginx01上
[root@nginx02 ~]# ip a验证漂移地址
代码语言：javascript复制[root@nginx01 ~]# pkill nginx '//关闭nginx服务'
[root@nginx01 ~]# systemctl status keepalived '//发现keepalived服务关闭了'
[root@nginx02 ~]# ip a '//现在发现VIP地址跑到nginx02上了'恢复漂移地址的操作
代码语言：javascript复制[root@nginx01 ~]# systemctl start nginx
[root@nginx01 ~]# systemctl start keepalived '//先开启nginx，在启动keepalived服务'
[root@nginx01 ~]# ip a '//再次查看，发现VIP回到了nginx01节点上'修改两个node节点配置文件（ootstrap.kubeconfig 、），统一VIP地址，仅展示node01节点的操作
代码语言：javascript复制[root@node01 ~]# vi /opt/k8s/cfg/bootstrap.kubeconfig
server: https://192.168.233.100:6443 '//此地址修改为VIP地址'
[root@node01 ~]# vi /opt/k8s/cfg/kubelet.kubeconfig
server: https://192.168.233.100:6443 '//此地址修改为VIP地址'
[root@node01 ~]# vi /opt/k8s/cfg/kube-proxy.kubeconfig
server: https://192.168.233.100:6443 '//此地址修改为VIP地址'重启两个node节点的服务
代码语言：javascript复制[root@node01 ~]# systemctl restart kubelet
[root@node01 ~]# systemctl restart kube-proxy
[root@node01 ~]# cd /opt/k8s/cfg/
[root@node01 cfg]# grep 100 * '//VIP修改成功'
bootstrap.kubeconfig: server: https://192.168.233.100:6443
kubelet.kubeconfig: server: https://192.168.233.100:6443
kube-proxy.kubeconfig: server: https://192.168.233.100:6443在nginx01上查看k8s日志
代码语言：javascript复制[root@nginx01 ~]# tail /var/log/nginx/k8s-access.log '//下面的日志是重启服务的时候产生的'
192.168.233.132 192.168.233.131:6443 - [01/May/2020:01:25:59 0800] 200 1121
192.168.233.132 192.168.233.131:6443 - [01/May/2020:01:25:59 0800] 200 1121master节点测试创建pod
代码语言：javascript复制[root@master ~]# kubectl run nginx --image=nginx '//创建一个nginx测试pod'
kubectl run --generator=deployment/apps.v1beta1 is DEPRECATED and will be removed in a future version. Use kubectl create instead.
deployment.apps/nginx created
[root@master ~]# kubectl get pods '//查看状态，是正在创建'
NAME READY STATUS RESTARTS AGE
nginx-dbddb74b8-5s6h7 0/1 ContainerCreating 0 13s
[root@master ~]# kubectl get pods '//稍等一下再次查看，发现pod已经创建完成，在master02节点也可以查看'
NAME READY STATUS RESTARTS AGE
nginx-dbddb74b8-5s6h7 1/1 Running 0 23s查看pod日志
代码语言：javascript复制[root@master ~]# kubectl logs nginx-dbddb74b8-5s6h7 '//查看pod日志发现报错原因是权限问题'
Error from server (Forbidden): Forbidden (user=system:anonymous, verb=get, resource=nodes, subresource=proxy) ( pods/log nginx-dbddb74b8-5s6h7)
[root@master ~]# kubectl create clusterrolebinding cluster-system-anonymous --clusterrole=cluster-admin --user=system:anonymous '//指定集群中的匿名用户有管理员权限'
[root@master ~]# kubectl logs nginx-dbddb74b8-5s6h7 '//此时可以访问，但是没有日志产生'访问node节点的pod资源产生日志，并在两个master节点查看
代码语言：javascript复制[root@master ~]# kubectl get pods -o wide '//查看podIP网络信息'
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
nginx-dbddb74b8-5s6h7 1/1 Running 0 6m29s 172.17.26.2 192.168.233.132 <none>
[root@node01 ~]# curl 172.17.26.2 '//在对应的节点访问pod'
[root@master ~]# kubectl logs nginx-dbddb74b8-5s6h7 '//再次在master节点访问日志情况，master02节点同样可以访问'
172.17.26.1 - - [30/Apr/2020:17:38:48 0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-"
