apiserver的部署
api-server的部署脚本 [root@mast-1 k8s]# cat apiserver.sh #!/bin/bash MASTER_ADDRESS=$1 主节点IP ETCD_SERVERS=$2 etcd地址 cat </opt/kubernetes/cfg/kube-apiserver KUBE_APISERVER_OPTS="--logtostderr=true \\ --v=4 \\ --etcd-servers=${ETCD_SERVERS} \\ --bind-address=${MASTER_ADDRESS} \\ --secure-port=6443 \\ --advertise-address=${MASTER_ADDRESS} \\ --allow-privileged=true \\ --service-cluster-ip-range=10.0.0.0/24 \\ --enable-admission-plugins=NamespaceLifecycle,LimitRanger,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/etcd/ssl/ca.pem \\ --etcd-certfile=/opt/etcd/ssl/server.pem \\ --etcd-keyfile=/opt/etcd/ssl/server-key.pem" EOF cat < /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
下载二进制包
[root@mast-1 k8s]# wget https://dl.k8s.io/v1.10.13/kubernetes-server-linux-amd64.tar.gz
解压安装
[root@mast-1 k8s]# tar xf kubernetes-server-linux-amd64.tar.gz
[root@mast-1 k8s]# cd kubernetes/server/bin/
[root@mast-1 bin]# ls
apiextensions-apiserver cloud-controller-manager.tar kube-apiserver kube-controller-manager kubectl kube-proxy.docker_tag kube-scheduler.docker_tag
cloud-controller-manager hyperkube kube-apiserver.docker_tag kube-controller-manager.docker_tag kubelet kube-proxy.tar kube-scheduler.tar
cloud-controller-manager.docker_tag kubeadm kube-apiserver.tar kube-controller-manager.tar kube-proxy kube-scheduler mounter
[root@mast-1 ~]# mkdir /opt/kubernetes/{cfg,ssl,bin} -pv
mkdir: 已创建目录 "/opt/kubernetes"
mkdir: 已创建目录 "/opt/kubernetes/cfg"
mkdir: 已创建目录 "/opt/kubernetes/ssl"
mkdir: 已创建目录 "/opt/kubernetes/bin"
[root@mast-1 bin]# cp kube-apiserver kube-controller-manager kube-scheduler /opt/kubernetes/bin/
[root@mast-1 k8s]# ./apiserver.sh 192.168.10.11 https://192.168.10.11:2379,https://192.168.10.12:2379,https://192.168.10.13:2379
[root@mast-1 k8s]# cd /opt/kubernetes/cfg/
[root@mast-1 cfg]# vi kube-apiserver
KUBE_APISERVER_OPTS="--logtostderr=false \
--log-dir=/opt/kubernetes/logs \ 定义日志目录;注意创建此目录
--v=4 \
--etcd-servers=https://192.168.10.11:2379,https://192.168.10.12:2379,https://192.168.10.13:2379 \
--bind-address=192.168.10.11 \ 绑定的IP地址
--secure-port=6443 \ 端口基于https通信的
--advertise-address=192.168.10.11 \ 集群通告地址；其他节点访问通告这个IP
--allow-privileged=true \ 容器层的授权
--service-cluster-ip-range=10.0.0.0/24 \ 负责均衡的虚拟IP
--enable-admission-plugins=NamespaceLifecycle,LimitRanger,ServiceAccount,ResourceQuota,NodeRestriction \ 启用准入插件；决定是否要启用一些高级功能
--authorization-mode=RBAC,Node \ 认证模式
--kubelet-https=true \ api-server主动访问kubelet是使用https协议
--enable-bootstrap-token-auth \ 认证客户端并实现自动颁发证书
--token-auth-file=/opt/kubernetes/cfg/token.csv \ 指定token文件
--service-node-port-range=30000-50000 \ node认证端口范围
--tls-cert-file=/opt/kubernetes/ssl/server.pem \ apiserver 证书文件
--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 \ ca证书
--etcd-cafile=/opt/etcd/ssl/ca.pem \ etcd 证书
--etcd-certfile=/opt/etcd/ssl/server.pem \
--etcd-keyfile=/opt/etcd/ssl/server-key.pem"
生成证书与token文件
[root@mast-1 k8s]# cat k8s-cert.sh cat > ca-config.json <ca-csr.json < server-csr.json < admin-csr.json < kube-proxy-csr.json <
生成token文件
[root@mast-1 k8s]# cp ca-key.pem ca.pem server-key.pem server.pem /opt/kubernetes/ssl/
[root@mast-1 k8s]#BOOTSTRAP_TOKEN=0fb61c46f8991b718eb38d27b605b008
[root@mast-1 k8s]#cat > token.csv <
启动apiserver
[root@mast-1 k8s]# systemctl start kube-apiserver [root@mast-1 k8s]# ps -ef | grep apiserver root 3264 1 99 20:35 ? 00:00:01 /opt/kubernetes/bin/kube-apiserver --logtostderr=false --log-dir=/opt/kubernetes/logs --v=4 --etcd-servers=https://192.168.10.11:2379,https:/ /192.168.10.12:2379,https://192.168.10.13:2379 --bind-address=192.168.10.11 --secure-port=6443 --advertise-address=192.168.10.11 --allow-privileged=true --service-cluster-ip-range=10.0.0.0/24 --enable-admission-plugins=NamespaceLifecycle,LimitRanger,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/etcd/ssl/ca.pem --etcd-certfile=/opt/etcd/ssl/server.pem --etcd-keyfile=/opt/etcd/ssl/server-key.pemroot 3274 1397 0 20:35 pts/0 00:00:00 grep --color=auto apiserver
生成配置文件并启动controller-manager
[root@mast-1 k8s]# cat controller-manager.sh #!/bin/bash MASTER_ADDRESS=$1 cat </opt/kubernetes/cfg/kube-controller-manager KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \\ 日志配置 --v=4 \\ --master=${MASTER_ADDRESS}:8080 \\ apimaster端口 --leader-elect=true \\ --address=127.0.0.1 \\ --service-cluster-ip-range=10.0.0.0/24 \\ --cluster-name=kubernetes \\ --cluster-signing-cert-file=/opt/kubernetes/ssl/ca.pem \\ --cluster-signing-key-file=/opt/kubernetes/ssl/ca-key.pem \\ --root-ca-file=/opt/kubernetes/ssl/ca.pem \\ --service-account-private-key-file=/opt/kubernetes/ssl/ca-key.pem \\ --experimental-cluster-signing-duration=87600h0m0s" EOF cat < /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 [root@mast-1 k8s]# bash controller-manager.sh 127.0.0.1 输入masterIP [root@mast-1 k8s]# ss -lntp State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 192.168.10.11:6443 *:* users:(("kube-apiserver",pid=7604,fd=6))LISTEN 0 128 192.168.10.11:2379 *:* users:(("etcd",pid=1428,fd=7))LISTEN 0 128 127.0.0.1:2379 *:* users:(("etcd",pid=1428,fd=6))LISTEN 0 128 127.0.0.1:10252 *:* users:(("kube-controller",pid=7593,fd=3))LISTEN 0 128 192.168.10.11:2380 *:* users:(("etcd",pid=1428,fd=5))LISTEN 0 128 127.0.0.1:8080 *:* users:(("kube-apiserver",pid=7604,fd=5))LISTEN 0 128 *:22 *:* users:(("sshd",pid=902,fd=3))LISTEN 0 100 127.0.0.1:25 *:* users:(("master",pid=1102,fd=13))LISTEN 0 128 :::10257 :::* users:(("kube-controller",pid=7593,fd=5))LISTEN 0 128 :::22 :::* users:(("sshd",pid=902,fd=4))LISTEN 0 100 ::1:25 :::* users:(("master",pid=1102,fd=14))
生成配置文件，并启动scheduler
[root@mast-1 k8s]# cat scheduler.sh #!/bin/bash MASTER_ADDRESS=$1 cat </opt/kubernetes/cfg/kube-scheduler KUBE_SCHEDULER_OPTS="--logtostderr=true \\ --v=4 \\ --master=${MASTER_ADDRESS}:8080 \\ --leader-elect" EOF cat < /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 [root@mast-1 k8s]# bash scheduler.sh 127.0.0.1 [root@mast-1 k8s]# ss -lntp State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 128 192.168.10.11:2379 *:* users:(("etcd",pid=1428,fd=7))LISTEN 0 128 127.0.0.1:2379 *:* users:(("etcd",pid=1428,fd=6))LISTEN 0 128 127.0.0.1:10252 *:* users:(("kube-controller",pid=7809,fd=3))LISTEN 0 128 192.168.10.11:2380 *:* users:(("etcd",pid=1428,fd=5))LISTEN 0 128 *:22 *:* users:(("sshd",pid=902,fd=3))LISTEN 0 100 127.0.0.1:25 *:* users:(("master",pid=1102,fd=13))LISTEN 0 128 :::10251 :::* users:(("kube-scheduler",pid=8073,fd=3))LISTEN 0 128 :::10257 :::* users:(("kube-controller",pid=7809,fd=5))LISTEN 0 128 :::22 :::* users:(("sshd",pid=902,fd=4))LISTEN 0 100 ::1:25 :::* users:(("master",pid=1102,fd=14))
配置文件
[root@mast-1 k8s]# cat /opt/kubernetes/cfg/kube-controller-manager KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=true \ --v=4 \ --master=127.0.0.1:8080 \ API连接地址 --leader-elect=true \ 自动做高可用选举 --address=127.0.0.1 \ 地址，不对外提供服务 --service-cluster-ip-range=10.0.0.0/24 \ 地址范围与apiserver配置一样 --cluster-name=kubernetes \ 名字 --cluster-signing-cert-file=/opt/kubernetes/ssl/ca.pem \签名 --cluster-signing-key-file=/opt/kubernetes/ssl/ca-key.pem \ 签名 --root-ca-file=/opt/kubernetes/ssl/ca.pem \ 根证书 --service-account-private-key-file=/opt/kubernetes/ssl/ca-key.pem \ --experimental-cluster-signing-duration=87600h0m0s" 有效时间
配置文件
[root@mast-1 k8s]# cat /opt/kubernetes/cfg/kube-scheduler KUBE_SCHEDULER_OPTS="--logtostderr=true \ --v=4 \ --master=127.0.0.1:8080 \ --leader-elect"
将客户端工具复制到/usr/bin目录下
[root@mast-1 k8s]# cp kubernetes/server/bin/kubectl /usr/bin/
查看集群状态
[root@mast-1 k8s]# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
etcd-2 Healthy {"health":"true"}
etcd-1 Healthy {"health":"true"}
etcd-0 Healthy {"health":"true"}
controller-manager Healthy ok