二进制安装Kubernetes（k8s） v1.24.0 IPv4/IPv6双栈 ---（中）

4.k8s系统组件配置

4.1.etcd配置

4.1.1master01配置

代码语言：shell复制

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
cat > /etc/etcd/etcd.config.yml << EOF 
name: 'k8s-master01'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.81:2380'
listen-client-urls: 'https://10.0.0.81:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.81:2380'
advertise-client-urls: 'https://10.0.0.81:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.1.2master02配置

代码语言：shell复制

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
cat > /etc/etcd/etcd.config.yml << EOF 
name: 'k8s-master02'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.82:2380'
listen-client-urls: 'https://10.0.0.82:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.82:2380'
advertise-client-urls: 'https://10.0.0.82:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.1.3master03配置

代码语言：shell复制

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
cat > /etc/etcd/etcd.config.yml << EOF 
name: 'k8s-master03'
data-dir: /var/lib/etcd
wal-dir: /var/lib/etcd/wal
snapshot-count: 5000
heartbeat-interval: 100
election-timeout: 1000
quota-backend-bytes: 0
listen-peer-urls: 'https://10.0.0.83:2380'
listen-client-urls: 'https://10.0.0.83:2379,http://127.0.0.1:2379'
max-snapshots: 3
max-wals: 5
cors:
initial-advertise-peer-urls: 'https://10.0.0.83:2380'
advertise-client-urls: 'https://10.0.0.83:2379'
discovery:
discovery-fallback: 'proxy'
discovery-proxy:
discovery-srv:
initial-cluster: 'k8s-master01=https://10.0.0.81:2380,k8s-master02=https://10.0.0.82:2380,k8s-master03=https://10.0.0.83:2380'
initial-cluster-token: 'etcd-k8s-cluster'
initial-cluster-state: 'new'
strict-reconfig-check: false
enable-v2: true
enable-pprof: true
proxy: 'off'
proxy-failure-wait: 5000
proxy-refresh-interval: 30000
proxy-dial-timeout: 1000
proxy-write-timeout: 5000
proxy-read-timeout: 0
client-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
peer-transport-security:
  cert-file: '/etc/kubernetes/pki/etcd/etcd.pem'
  key-file: '/etc/kubernetes/pki/etcd/etcd-key.pem'
  peer-client-cert-auth: true
  trusted-ca-file: '/etc/kubernetes/pki/etcd/etcd-ca.pem'
  auto-tls: true
debug: false
log-package-levels:
log-outputs: [default]
force-new-cluster: false
EOF

4.2.创建service（所有master节点操作）

4.2.1创建etcd.service并启动

代码语言：shell复制

cat > /usr/lib/systemd/system/etcd.service << EOF

[Unit]
Description=Etcd Service
Documentation=https://coreos.com/etcd/docs/latest/
After=network.target

[Service]
Type=notify
ExecStart=/usr/local/bin/etcd --config-file=/etc/etcd/etcd.config.yml
Restart=on-failure
RestartSec=10
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target
Alias=etcd3.service

EOF

4.2.2创建etcd证书目录

代码语言：shell复制

mkdir /etc/kubernetes/pki/etcd
ln -s /etc/etcd/ssl/* /etc/kubernetes/pki/etcd/
systemctl daemon-reload
systemctl enable --now etcd

4.2.3查看etcd状态

代码语言：shell复制

# 如果要用IPv6那么把IPv4地址修改为IPv6即可
export ETCDCTL_API=3
etcdctl --endpoints="10.0.0.83:2379,10.0.0.82:2379,10.0.0.81:2379" --cacert=/etc/kubernetes/pki/etcd/etcd-ca.pem --cert=/etc/kubernetes/pki/etcd/etcd.pem --key=/etc/kubernetes/pki/etcd/etcd-key.pem  endpoint status --write-out=table
 ---------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- -------- 
|    ENDPOINT    |        ID        | VERSION | DB SIZE | IS LEADER | IS LEARNER | RAFT TERM | RAFT INDEX | RAFT APPLIED INDEX | ERRORS |
 ---------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- -------- 
| 10.0.0.83:2379 | c0c8142615b9523f |   3.5.4 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 10.0.0.82:2379 | de8396604d2c160d |   3.5.4 |   20 kB |     false |      false |         2 |          9 |                  9 |        |
| 10.0.0.81:2379 | 33c9d6df0037ab97 |   3.5.4 |   20 kB |      true |      false |         2 |          9 |                  9 |        |
 ---------------- ------------------ --------- --------- ----------- ------------ ----------- ------------ -------------------- -------- 
[root@k8s-master01 pki]# 

5.高可用配置

5.1在lb01和lb02两台服务器上操作

5.1.1安装keepalived和haproxy服务

代码语言：shell复制

systemctl disable --now firewalld

setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config


yum -y install keepalived haproxy

5.1.2修改haproxy配置文件（两台配置文件一样）

代码语言：shell复制

# cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak

cat >/etc/haproxy/haproxy.cfg<<"EOF"
global
 maxconn 2000
 ulimit-n 16384
 log 127.0.0.1 local0 err
 stats timeout 30s

defaults
 log global
 mode http
 option httplog
 timeout connect 5000
 timeout client 50000
 timeout server 50000
 timeout http-request 15s
 timeout http-keep-alive 15s


frontend monitor-in
 bind *:33305
 mode http
 option httplog
 monitor-uri /monitor

frontend k8s-master
 bind 0.0.0.0:8443
 bind 127.0.0.1:8443
 mode tcp
 option tcplog
 tcp-request inspect-delay 5s
 default_backend k8s-master


backend k8s-master
 mode tcp
 option tcplog
 option tcp-check
 balance roundrobin
 default-server inter 10s downinter 5s rise 2 fall 2 slowstart 60s maxconn 250 maxqueue 256 weight 100
 server  k8s-master01  10.0.0.81:6443 check
 server  k8s-master02  10.0.0.82:6443 check
 server  k8s-master03  10.0.0.83:6443 check
EOF

5.1.3lb01配置keepalived master节点

代码语言：shell复制

#cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5 
    weight -5
    fall 2
    rise 1
}
vrrp_instance VI_1 {
    state MASTER
    interface ens160
    mcast_src_ip 10.0.0.80
    virtual_router_id 51
    priority 100
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        10.0.0.89
    }
    track_script {
      chk_apiserver 
} }

EOF

5.1.4lb02配置keepalived backup节点

代码语言：shell复制

# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak

cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived

global_defs {
    router_id LVS_DEVEL
}
vrrp_script chk_apiserver {
    script "/etc/keepalived/check_apiserver.sh"
    interval 5 
    weight -5
    fall 2
    rise 1

}
vrrp_instance VI_1 {
    state BACKUP
    interface ens160
    mcast_src_ip 10.0.0.90
    virtual_router_id 51
    priority 50
    nopreempt
    advert_int 2
    authentication {
        auth_type PASS
        auth_pass K8SHA_KA_AUTH
    }
    virtual_ipaddress {
        10.0.0.89
    }
    track_script {
      chk_apiserver 
} }

EOF

5.1.5健康检查脚本配置（两台lb主机）

代码语言：shell复制

cat >  /etc/keepalived/check_apiserver.sh << EOF
#!/bin/bash

err=0
for k in $(seq 1 3)
do
    check_code=$(pgrep haproxy)
    if [[ $check_code == "" ]]; then
        err=$(expr $err   1)
        sleep 1
        continue
    else
        err=0
        break
    fi
done

if [[ $err != "0" ]]; then
    echo "systemctl stop keepalived"
    /usr/bin/systemctl stop keepalived
    exit 1
else
    exit 0
fi
EOF

# 给脚本授权

chmod  x /etc/keepalived/check_apiserver.sh

5.1.6启动服务

代码语言：shell复制

systemctl daemon-reload
systemctl enable --now haproxy
systemctl enable --now keepalived

5.1.7测试高可用

代码语言：shell复制

# 能ping同

[root@k8s-node02 ~]# ping 10.0.0.89

# 能telnet访问

[root@k8s-node02 ~]# telnet 10.0.0.89 8443

# 关闭主节点，看vip是否漂移到备节点

6.k8s组件配置（区别于第4点）

所有k8s节点创建以下目录

代码语言：shell复制

mkdir -p /etc/kubernetes/manifests/ /etc/systemd/system/kubelet.service.d /var/lib/kubelet /var/log/kubernetes

6.1.创建apiserver（所有master节点）

6.1.1master01节点配置

代码语言：shell复制

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver 
      --v=2  
      --logtostderr=true  
      --allow-privileged=true  
      --bind-address=0.0.0.0  
      --secure-port=6443  
      --advertise-address=10.0.0.81 
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  
      --feature-gates=IPv6DualStack=true  
      --service-node-port-range=30000-32767  
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  
      --client-ca-file=/etc/kubernetes/pki/ca.pem  
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  
      --service-account-issuer=https://kubernetes.default.svc.cluster.local 
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  
      --authorization-mode=Node,RBAC  
      --enable-bootstrap-token-auth=true  
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  
      --requestheader-allowed-names=aggregator  
      --requestheader-group-headers=X-Remote-Group  
      --requestheader-extra-headers-prefix=X-Remote-Extra-  
      --requestheader-username-headers=X-Remote-User 
      --enable-aggregator-routing=true
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.2master02节点配置

代码语言：shell复制

cat > /usr/lib/systemd/system/kube-apiserver.service << EOF
[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver 
      --v=2  
      --logtostderr=true  
      --allow-privileged=true  
      --bind-address=0.0.0.0  
      --secure-port=6443  
      --advertise-address=10.0.0.82 
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  
			--feature-gates=IPv6DualStack=true 
      --service-node-port-range=30000-32767  
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  
      --client-ca-file=/etc/kubernetes/pki/ca.pem  
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  
      --service-account-issuer=https://kubernetes.default.svc.cluster.local 
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  
      --authorization-mode=Node,RBAC  
      --enable-bootstrap-token-auth=true  
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  
      --requestheader-allowed-names=aggregator  
      --requestheader-group-headers=X-Remote-Group  
      --requestheader-extra-headers-prefix=X-Remote-Extra-  
      --requestheader-username-headers=X-Remote-User 
      --enable-aggregator-routing=true
      # --token-auth-file=/etc/kubernetes/token.csv

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.3master03节点配置

代码语言：shell复制

cat > /usr/lib/systemd/system/kube-apiserver.service  << EOF

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-apiserver 
      --v=2  
      --logtostderr=true  
      --allow-privileged=true  
      --bind-address=0.0.0.0  
      --secure-port=6443  
      --advertise-address=10.0.0.83 
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108  
			--feature-gates=IPv6DualStack=true 
      --service-node-port-range=30000-32767  
      --etcd-servers=https://10.0.0.81:2379,https://10.0.0.82:2379,https://10.0.0.83:2379 
      --etcd-cafile=/etc/etcd/ssl/etcd-ca.pem  
      --etcd-certfile=/etc/etcd/ssl/etcd.pem  
      --etcd-keyfile=/etc/etcd/ssl/etcd-key.pem  
      --client-ca-file=/etc/kubernetes/pki/ca.pem  
      --tls-cert-file=/etc/kubernetes/pki/apiserver.pem  
      --tls-private-key-file=/etc/kubernetes/pki/apiserver-key.pem  
      --kubelet-client-certificate=/etc/kubernetes/pki/apiserver.pem  
      --kubelet-client-key=/etc/kubernetes/pki/apiserver-key.pem  
      --service-account-key-file=/etc/kubernetes/pki/sa.pub  
      --service-account-signing-key-file=/etc/kubernetes/pki/sa.key  
      --service-account-issuer=https://kubernetes.default.svc.cluster.local 
      --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname  
      --enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota  
      --authorization-mode=Node,RBAC  
      --enable-bootstrap-token-auth=true  
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem  
      --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.pem  
      --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client-key.pem  
      --requestheader-allowed-names=aggregator  
      --requestheader-group-headers=X-Remote-Group  
      --requestheader-extra-headers-prefix=X-Remote-Extra-  
      --requestheader-username-headers=X-Remote-User 
      --enable-aggregator-routing=true

Restart=on-failure
RestartSec=10s
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

EOF

6.1.4启动apiserver（所有master节点）

代码语言：shell复制

systemctl daemon-reload && systemctl enable --now kube-apiserver

# 注意查看状态是否启动正常

systemctl status kube-apiserver

6.2.配置kube-controller-manager service

代码语言：shell复制

# 所有master节点配置，且配置相同
# 172.16.0.0/12为pod网段，按需求设置你自己的网段

cat > /usr/lib/systemd/system/kube-controller-manager.service << EOF

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-controller-manager 
      --v=2 
      --logtostderr=true 
      --bind-address=127.0.0.1 
      --root-ca-file=/etc/kubernetes/pki/ca.pem 
      --cluster-signing-cert-file=/etc/kubernetes/pki/ca.pem 
      --cluster-signing-key-file=/etc/kubernetes/pki/ca-key.pem 
      --service-account-private-key-file=/etc/kubernetes/pki/sa.key 
      --kubeconfig=/etc/kubernetes/controller-manager.kubeconfig 
      --leader-elect=true 
      --use-service-account-credentials=true 
      --node-monitor-grace-period=40s 
      --node-monitor-period=5s 
      --pod-eviction-timeout=2m0s 
      --controllers=*,bootstrapsigner,tokencleaner 
      --allocate-node-cidrs=true 
      --feature-gates=IPv6DualStack=true 
      --service-cluster-ip-range=10.96.0.0/12,fd00::/108 
      --cluster-cidr=172.16.0.0/12,fc00::/48 
      --node-cidr-mask-size-ipv4=24 
      --node-cidr-mask-size-ipv6=64 
      --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.pem 

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.2.1启动kube-controller-manager，并查看状态

代码语言：shell复制

systemctl daemon-reload
systemctl enable --now kube-controller-manager
systemctl  status kube-controller-manager

6.3.配置kube-scheduler service

6.3.1所有master节点配置，且配置相同

代码语言：shell复制

cat > /usr/lib/systemd/system/kube-scheduler.service << EOF

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-scheduler 
      --v=2 
      --logtostderr=true 
      --bind-address=127.0.0.1 
      --leader-elect=true 
      --kubeconfig=/etc/kubernetes/scheduler.kubeconfig

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

6.3.2启动并查看服务状态

代码语言：shell复制

systemctl daemon-reload
systemctl enable --now kube-scheduler
systemctl status kube-scheduler

7.TLS Bootstrapping配置

7.1在master01上配置

代码语言：shell复制

cd bootstrap

kubectl config set-cluster kubernetes     
--certificate-authority=/etc/kubernetes/pki/ca.pem     
--embed-certs=true     --server=https://10.0.0.89:8443     
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config set-credentials tls-bootstrap-token-user     
--token=c8ad9c.2e4d610cf3e7426e 
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config set-context tls-bootstrap-token-user@kubernetes     
--cluster=kubernetes     
--user=tls-bootstrap-token-user     
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

kubectl config use-context tls-bootstrap-token-user@kubernetes     
--kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig

# token的位置在bootstrap.secret.yaml，如果修改的话到这个文件修改

mkdir -p /root/.kube ; cp /etc/kubernetes/admin.kubeconfig /root/.kube/config

7.2查看集群状态，没问题的话继续后续操作

代码语言：shell复制

kubectl get cs

Warning: v1 ComponentStatus is deprecated in v1.19 
NAME                 STATUS    MESSAGE                         ERROR
scheduler            Healthy   ok                              
controller-manager   Healthy   ok                              
etcd-0               Healthy   {"health":"true","reason":""}   
etcd-2               Healthy   {"health":"true","reason":""}   
etcd-1               Healthy   {"health":"true","reason":""} 

kubectl create -f bootstrap.secret.yaml

8.node节点配置

8.1.在master01上将证书复制到node节点

代码语言：shell复制

cd /etc/kubernetes/
 
for NODE in k8s-master02 k8s-master03 k8s-node01 k8s-node02 k8s-node03 k8s-node04 k8s-node05; do ssh $NODE mkdir -p /etc/kubernetes/pki; for FILE in pki/ca.pem pki/ca-key.pem pki/front-proxy-ca.pem bootstrap-kubelet.kubeconfig; do scp /etc/kubernetes/$FILE $NODE:/etc/kubernetes/${FILE}; done; done

8.2.kubelet配置

8.2.1所有k8s节点创建相关目录

代码语言：shell复制

mkdir -p /var/lib/kubelet /var/log/kubernetes /etc/systemd/system/kubelet.service.d /etc/kubernetes/manifests/

# 所有k8s节点配置kubelet service
cat > /usr/lib/systemd/system/kubelet.service << EOF

[Unit]
Description=Kubernetes Kubelet
Documentation=https://github.com/kubernetes/kubernetes
After=containerd.service
Requires=containerd.service

[Service]
ExecStart=/usr/local/bin/kubelet 
    --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.kubeconfig  
    --kubeconfig=/etc/kubernetes/kubelet.kubeconfig 
    --config=/etc/kubernetes/kubelet-conf.yml 
    --container-runtime=remote  
    --runtime-request-timeout=15m  
    --container-runtime-endpoint=unix:///run/containerd/containerd.sock  
    --cgroup-driver=systemd 
    --node-labels=node.kubernetes.io/node='' 
    --feature-gates=IPv6DualStack=true

[Install]
WantedBy=multi-user.target
EOF

8.2.2所有k8s节点创建kubelet的配置文件

代码语言：shell复制

cat > /etc/kubernetes/kubelet-conf.yml <<EOF
apiVersion: kubelet.config.k8s.io/v1beta1
kind: KubeletConfiguration
address: 0.0.0.0
port: 10250
readOnlyPort: 10255
authentication:
  anonymous:
    enabled: false
  webhook:
    cacheTTL: 2m0s
    enabled: true
  x509:
    clientCAFile: /etc/kubernetes/pki/ca.pem
authorization:
  mode: Webhook
  webhook:
    cacheAuthorizedTTL: 5m0s
    cacheUnauthorizedTTL: 30s
cgroupDriver: systemd
cgroupsPerQOS: true
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
containerLogMaxFiles: 5
containerLogMaxSize: 10Mi
contentType: application/vnd.kubernetes.protobuf
cpuCFSQuota: true
cpuManagerPolicy: none
cpuManagerReconcilePeriod: 10s
enableControllerAttachDetach: true
enableDebuggingHandlers: true
enforceNodeAllocatable:
- pods
eventBurst: 10
eventRecordQPS: 5
evictionHard:
  imagefs.available: 15%
  memory.available: 100Mi
  nodefs.available: 10%
  nodefs.inodesFree: 5%
evictionPressureTransitionPeriod: 5m0s
failSwapOn: true
fileCheckFrequency: 20s
hairpinMode: promiscuous-bridge
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 20s
imageGCHighThresholdPercent: 85
imageGCLowThresholdPercent: 80
imageMinimumGCAge: 2m0s
iptablesDropBit: 15
iptablesMasqueradeBit: 14
kubeAPIBurst: 10
kubeAPIQPS: 5
makeIPTablesUtilChains: true
maxOpenFiles: 1000000
maxPods: 110
nodeStatusUpdateFrequency: 10s
oomScoreAdj: -999
podPidsLimit: -1
registryBurst: 10
registryPullQPS: 5
resolvConf: /etc/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 2m0s
serializeImagePulls: true
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 4h0m0s
syncFrequency: 1m0s
volumeStatsAggPeriod: 1m0s
EOF

8.2.3启动kubelet

代码语言：shell复制

systemctl daemon-reload
systemctl restart kubelet
systemctl enable --now kubelet

8.2.4查看集群

代码语言：shell复制

[root@k8s-master01 ~]# kubectl  get node
NAME           STATUS     ROLES    AGE   VERSION
k8s-master01   NotReady   <none>   12s   v1.24.0
k8s-master02   NotReady   <none>   12s   v1.24.0
k8s-master03   NotReady   <none>   12s   v1.24.0
k8s-node01     NotReady   <none>   12s   v1.24.0
k8s-node02     NotReady   <none>   12s   v1.24.0
k8s-node03     NotReady   <none>   12s   v1.24.0
k8s-node04     NotReady   <none>   12s   v1.24.0
k8s-node05     NotReady   <none>   12s   v1.24.0
[root@k8s-master01 ~]#

8.3.kube-proxy配置

8.3.1此配置只在master01操作

代码语言：shell复制

cp /etc/kubernetes/admin.kubeconfig /etc/kubernetes/kube-proxy.kubeconfig

8.3.2将kubeconfig发送至其他节点

代码语言：shell复制

for NODE in k8s-master02 k8s-master03; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig; done

for NODE in k8s-node01 k8s-node02 k8s-node03 k8s-node04 k8s-node05; do scp /etc/kubernetes/kube-proxy.kubeconfig $NODE:/etc/kubernetes/kube-proxy.kubeconfig;  done

8.3.3所有k8s节点添加kube-proxy的配置和service文件

代码语言：shell复制

cat >  /usr/lib/systemd/system/kube-proxy.service << EOF
[Unit]
Description=Kubernetes Kube Proxy
Documentation=https://github.com/kubernetes/kubernetes
After=network.target

[Service]
ExecStart=/usr/local/bin/kube-proxy 
  --config=/etc/kubernetes/kube-proxy.yaml 
  --v=2

Restart=always
RestartSec=10s

[Install]
WantedBy=multi-user.target

EOF

代码语言：shell复制

cat > /etc/kubernetes/kube-proxy.yaml << EOF
apiVersion: kubeproxy.config.k8s.io/v1alpha1
bindAddress: 0.0.0.0
clientConnection:
  acceptContentTypes: ""
  burst: 10
  contentType: application/vnd.kubernetes.protobuf
  kubeconfig: /etc/kubernetes/kube-proxy.kubeconfig
  qps: 5
clusterCIDR: 172.16.0.0/12,fc00::/48 
configSyncPeriod: 15m0s
conntrack:
  max: null
  maxPerCore: 32768
  min: 131072
  tcpCloseWaitTimeout: 1h0m0s
  tcpEstablishedTimeout: 24h0m0s
enableProfiling: false
healthzBindAddress: 0.0.0.0:10256
hostnameOverride: ""
iptables:
  masqueradeAll: false
  masqueradeBit: 14
  minSyncPeriod: 0s
  syncPeriod: 30s
ipvs:
  masqueradeAll: true
  minSyncPeriod: 5s
  scheduler: "rr"
  syncPeriod: 30s
kind: KubeProxyConfiguration
metricsBindAddress: 127.0.0.1:10249
mode: "ipvs"
nodePortAddresses: null
oomScoreAdj: -999
portRange: ""
udpIdleTimeout: 250ms

EOF

8.3.4启动kube-proxy

代码语言：shell复制

 systemctl daemon-reload
 systemctl restart kube-proxy
 systemctl enable --now kube-proxy

kubernetes 容器服务 容器 虚拟化 linuxk8s Linux 容器 kubernetes 虚拟化

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