k8s-部署master节点组件

部署master节点组件

文章照抄

https://www.cnblogs.com/jasonboren/p/11493227.html

master节点的组件有：kube-apiserver，kube-scheduler，kube-controller-manager

./apiserver.sh 192.168.10.155 https://192.168.10.155:2379,https://192.168.10.158:2379,https://192.168.10.157:2379

./controller-manager.sh 127.0.0.1

./scheduler.sh 127.0.0.1

apiserver.sh

#!/bin/bash

MASTER_ADDRESS=${1:-"192.168.1.195"}
ETCD_SERVERS=${2:-"http://127.0.0.1:2379"}

cat <<EOF >/opt/kubernetes/cfg/kube-apiserver

KUBE_APISERVER_OPTS="--logtostderr=true \\
--v=4 \\
--etcd-servers=${ETCD_SERVERS} \\
--insecure-bind-address=127.0.0.1 \\
--bind-address=${MASTER_ADDRESS} \\
--insecure-port=8080 \\
--secure-port=6443 \\
--advertise-address=${MASTER_ADDRESS} \\
--allow-privileged=true \\
--service-cluster-ip-range=10.10.10.0/24 \\
--admission-control=NamespaceLifecycle,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota,NodeRestriction \
--authorization-mode=RBAC,Node \\
--kubelet-https=true \\
--enable-bootstrap-token-auth \\
--token-auth-file=/opt/kubernetes/cfg/token.csv \\
--service-node-port-range=30000-50000 \\
--tls-cert-file=/opt/kubernetes/ssl/server.pem  \\
--tls-private-key-file=/opt/kubernetes/ssl/server-key.pem \\
--client-ca-file=/opt/kubernetes/ssl/ca.pem \\
--service-account-key-file=/opt/kubernetes/ssl/ca-key.pem \\
--etcd-cafile=/opt/kubernetes/ssl/ca.pem \\
--etcd-certfile=/opt/kubernetes/ssl/server.pem \\
--etcd-keyfile=/opt/kubernetes/ssl/server-key.pem"

EOF

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

[Service]
EnvironmentFile=-/opt/kubernetes/cfg/kube-apiserver
ExecStart=/opt/kubernetes/bin/kube-apiserver \$KUBE_APISERVER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kube-apiserver
systemctl restart kube-apiserver

controller-manager.sh

#!/bin/bash

MASTER_ADDRESS=${1:-"127.0.0.1"}

cat <<EOF >/opt/kubernetes/cfg/kube-controller-manager


KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \\
--v=4 \\
--master=${MASTER_ADDRESS}:8080 \\
--leader-elect=true \\
--address=127.0.0.1 \\
--service-cluster-ip-range=10.10.10.0/24 \\
--cluster-name=kubernetes \\
--cluster-signing-cert-file=/opt/kubernetes/ssl/ca.pem \\
--cluster-signing-key-file=/opt/kubernetes/ssl/ca-key.pem  \\
--service-account-private-key-file=/opt/kubernetes/ssl/ca-key.pem \\
--root-ca-file=/opt/kubernetes/ssl/ca.pem"

EOF

cat <<EOF >/usr/lib/systemd/system/kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/opt/kubernetes/cfg/kube-controller-manager
ExecStart=/opt/kubernetes/bin/kube-controller-manager \$KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kube-controller-manager
systemctl restart kube-controller-manager

scheduler.sh

#!/bin/bash

MASTER_ADDRESS=${1:-"127.0.0.1"}

cat <<EOF >/opt/kubernetes/cfg/kube-scheduler

KUBE_SCHEDULER_OPTS="--logtostderr=true \\
--v=4 \\
--master=${MASTER_ADDRESS}:8080 \\
--leader-elect"

EOF

cat <<EOF >/usr/lib/systemd/system/kube-scheduler.service
[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/kubernetes/kubernetes

[Service]
EnvironmentFile=-/opt/kubernetes/cfg/kube-scheduler
ExecStart=/opt/kubernetes/bin/kube-scheduler \$KUBE_SCHEDULER_OPTS
Restart=on-failure

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable kube-scheduler
systemctl restart kube-scheduler

启动组件

systemctl start kube-apiserver
systemctl start kube-scheduler
systemctl start kube-controller-manager

查看master集群状态

[root@master bin]# kubectl get cs
NAME                 STATUS    MESSAGE             ERROR
scheduler            Healthy   ok                  
controller-manager   Healthy   ok                  
etcd-1               Healthy   {"health":"true"}   
etcd-0               Healthy   {"health":"true"}   
etcd-2               Healthy   {"health":"true"}   

当前目录结构

[root@master kubernetes]# pwd
/opt/kubernetes
[root@master kubernetes]# tree
.
├── bin
│   ├── apiserver.sh
│   ├── controller-manager.sh
│   ├── etcd
│   ├── etcdctl
│   ├── kube-apiserver
│   ├── kube-controller-manager
│   ├── kubectl
│   ├── kubelet
│   ├── kube-proxy
│   ├── kube-scheduler
│   └── scheduler.sh
├── cfg
│   ├── etcd
│   ├── kube-apiserver
│   ├── kube-controller-manager
│   ├── kube-scheduler
│   └── token.csv
├── do.sh
└── ssl
    ├── admin-key.pem
    ├── admin.pem
    ├── bootstrap.kubeconfig
    ├── ca-key.pem
    ├── ca.pem
    ├── kube-proxy-key.pem
    ├── kube-proxy.kubeconfig
    ├── kube-proxy.pem
    ├── server-key.pem
    └── server.pem