K8S Mater节点部署
1、部署Kubernetes API服务部署
（1）准备软件包
[root@linux-node1 ~]# cd /usr/local/src/kubernetes [root@linux-node1 kubernetes]# cp server/bin/kube-apiserver /opt/kubernetes/bin/ [root@linux-node1 kubernetes]# cp server/bin/kube-controller-manager /opt/kubernetes/bin/ [root@linux-node1 kubernetes]# cp server/bin/kube-scheduler /opt/kubernetes/bin/
（2）创建生成CSR的 JSON 配置文件
[root@linux-node1 src]# vim kubernetes-csr.json { "CN": "kubernetes", "hosts": [ "127.0.0.1", "192.168.56.110", "10.1.0.1", "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.cluster", "kubernetes.default.svc.cluster.local" ], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "BeiJing", "L": "BeiJing", "O": "k8s", "OU": "System" } ] }
（3）生成 kubernetes 证书和私钥
[root@linux-node1 src]# cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem \ -ca-key=/opt/kubernetes/ssl/ca-key.pem \ -config=/opt/kubernetes/ssl/ca-config.json \ -profile=kubernetes kubernetes-csr.json | cfssljson -bare kubernetes [root@linux-node1 src]# cp kubernetes*.pem /opt/kubernetes/ssl/ [root@linux-node1 ~]# scp kubernetes*.pem 192.168.56.120:/opt/kubernetes/ssl/ [root@linux-node1 ~]# scp kubernetes*.pem 192.168.56.130:/opt/kubernetes/ssl/
（4） 创建 kube-apiserver 使用的客户端 token 文件
[root@linux-node1 ~]# head -c 16 /dev/urandom | od -An -t x | tr -d ' ' ad6d5bb607a186796d8861557df0d17f [root@linux-node1 ~]# vim /opt/kubernetes/ssl/ bootstrap-token.csv ad6d5bb607a186796d8861557df0d17f,kubelet-bootstrap,10001,"system:kubelet-bootstrap"
（5） 创建基础用户名/密码认证配置
[root@linux-node1 ~]# vim /opt/kubernetes/ssl/basic-auth.csv admin,admin,1 readonly,readonly,2
（6） 部署Kubernetes API Server
[root@linux-node1 ~]# vim /usr/lib/systemd/system/kube-apiserver.service [Unit] Description=Kubernetes API Server Documentation=https://github.com/GoogleCloudPlatform/kubernetes After=network.target [Service] ExecStart=/opt/kubernetes/bin/kube-apiserver \ --admission-control=NamespaceLifecycle,LimitRanger,ServiceAccount,DefaultStorageClass,ResourceQuota,NodeRestriction \ --bind-address=192.168.56.110 \ --insecure-bind-address=127.0.0.1 \ --authorization-mode=Node,RBAC \ --runtime-config=rbac.authorization.k8s.io/v1 \ --kubelet-https=true \ --anonymous-auth=false \ --basic-auth-file=/opt/kubernetes/ssl/basic-auth.csv \ --enable-bootstrap-token-auth \ --token-auth-file=/opt/kubernetes/ssl/bootstrap-token.csv \ --service-cluster-ip-range=10.1.0.0/16 \ --service-node-port-range=20000-40000 \ --tls-cert-file=/opt/kubernetes/ssl/kubernetes.pem \ --tls-private-key-file=/opt/kubernetes/ssl/kubernetes-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/kubernetes.pem \ --etcd-keyfile=/opt/kubernetes/ssl/kubernetes-key.pem \ --etcd-servers=https://192.168.56.110:2379,https://192.168.56.120:2379,https://192.168.56.130:2379 \ --enable-swagger-ui=true \ --allow-privileged=true \ --audit-log-maxage=30 \ --audit-log-maxbackup=3 \ --audit-log-maxsize=100 \ --audit-log-path=/opt/kubernetes/log/api-audit.log \ --event-ttl=1h \ --v=2 \ --logtostderr=false \ --log-dir=/opt/kubernetes/log Restart=on-failure RestartSec=5 Type=notify LimitNOFILE=65536 [Install] WantedBy=multi-user.target
（7） 启动API Server服务
[root@linux-node1 ~]# systemctl daemon-reload [root@linux-node1 ~]# systemctl enable kube-apiserver [root@linux-node1 ~]# systemctl start kube-apiserver [root@linux-node1 ~]# systemctl status kube-apiserver
2、部署Controller Manager服务
（1）部署Controller Manager服务
[root@linux-node1 ~]# vim /usr/lib/systemd/system/kube-controller-manager.service [Unit] Description=Kubernetes Controller Manager Documentation=https://github.com/GoogleCloudPlatform/kubernetes [Service] ExecStart=/opt/kubernetes/bin/kube-controller-manager \ --address=127.0.0.1 \ --master=http://127.0.0.1:8080 \ --allocate-node-cidrs=true \ --service-cluster-ip-range=10.1.0.0/16 \ --cluster-cidr=10.2.0.0/16 \ --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 \ --leader-elect=true \ --v=2 \ --logtostderr=false \ --log-dir=/opt/kubernetes/log Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target
（2）启动Controller Manager
[root@linux-node1 ~]# systemctl daemon-reload [root@linux-node1 scripts]# systemctl enable kube-controller-manager [root@linux-node1 scripts]# systemctl start kube-controller-manager [root@linux-node1 scripts]# systemctl status kube-controller-manager
3、部署Kubernetes Scheduler
[root@linux-node1 ~]# vim /usr/lib/systemd/system/kube-scheduler.service [Unit] Description=Kubernetes Scheduler Documentation=https://github.com/GoogleCloudPlatform/kubernetes [Service] ExecStart=/opt/kubernetes/bin/kube-scheduler \ --address=127.0.0.1 \ --master=http://127.0.0.1:8080 \ --leader-elect=true \ --v=2 \ --logtostderr=false \ --log-dir=/opt/kubernetes/log Restart=on-failure RestartSec=5 [Install] WantedBy=multi-user.target [root@linux-node1 ~]# systemctl daemon-reload [root@linux-node1 scripts]# systemctl enable kube-scheduler [root@linux-node1 scripts]# systemctl start kube-scheduler [root@linux-node1 scripts]# systemctl status kube-scheduler
4、部署kubectl 命令行工具
（1）准备二进制命令包
[root@linux-node1 ~]# cd /usr/local/src/kubernetes/client/bin [root@linux-node1 bin]# cp kubectl /opt/kubernetes/bin/
（2）创建 admin 证书签名请求
[root@linux-node1 ~]# cd /usr/local/src/ssl/ [root@linux-node1 ssl]# vim admin-csr.json { "CN": "admin", "hosts": [], "key": { "algo": "rsa", "size": 2048 }, "names": [ { "C": "CN", "ST": "BeiJing", "L": "BeiJing", "O": "system:masters", "OU": "System" } ] }
（3）生成 admin 证书和私钥
[root@linux-node1 ssl]# cfssl gencert -ca=/opt/kubernetes/ssl/ca.pem \ -ca-key=/opt/kubernetes/ssl/ca-key.pem \ -config=/opt/kubernetes/ssl/ca-config.json \ -profile=kubernetes admin-csr.json | cfssljson -bare admin [root@linux-node1 ssl]# ls -l admin* -rw-r--r-- 1 root root 1009 Mar 5 12:29 admin.csr -rw-r--r-- 1 root root 229 Mar 5 12:28 admin-csr.json -rw------- 1 root root 1675 Mar 5 12:29 admin-key.pem -rw-r--r-- 1 root root 1399 Mar 5 12:29 admin.pem [root@linux-node1 src]# cp admin*.pem /opt/kubernetes/ssl/
（4）设置集群参数
[root@linux-node1 src]# kubectl config set-cluster kubernetes \ --certificate-authority=/opt/kubernetes/ssl/ca.pem \ --embed-certs=true \ --server=https://192.168.56.110:6443 Cluster "kubernetes" set.
（5）设置客户端认证参数
[root@linux-node1 src]# kubectl config set-credentials admin \ --client-certificate=/opt/kubernetes/ssl/admin.pem \ --embed-certs=true \ --client-key=/opt/kubernetes/ssl/admin-key.pem User "admin" set.
（6）设置上下文参数
[root@linux-node1 src]# kubectl config set-context kubernetes \ --cluster=kubernetes \ --user=admin Context "kubernetes" created.
（7）设置默认上下文
[root@linux-node1 src]# kubectl config use-context kubernetes Switched to context "kubernetes".
（8）使用kubectl工具
[root@linux-node1 ssl]# kubectl get cs NAME STATUS MESSAGE ERROR scheduler Healthy ok controller-manager Healthy ok etcd-2 Healthy {"health": "true"} etcd-0 Healthy {"health": "true"} etcd-1 Healthy {"health": "true"}