010.Kubernetes二进制部署kube-controller-manager

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# cat > kube-controller-manager-csr.json <<EOF
  3 {
  4   "CN": "system:kube-controller-manager",
  5   "hosts": [
  6     "127.0.0.1",
  7     "172.24.8.71",
  8     "172.24.8.72",
  9     "172.24.8.73"
 10   ],
 11   "key": {
 12     "algo": "rsa",
 13     "size": 2048
 14   },
 15   "names": [
 16     {
 17       "C": "CN",
 18       "ST": "Shanghai",
 19       "L": "Shanghai",
 20       "O": "system:kube-controller-manager",
 21       "OU": "System"
 22     }
 23   ]
 24 }
 25 EOF
 26 #创建kube-controller-manager的CA证书请求文件

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# cfssl gencert -ca=/opt/k8s/work/ca.pem   3 -ca-key=/opt/k8s/work/ca-key.pem -config=/opt/k8s/work/ca-config.json   4 -profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager	#生成CA密钥（ca-key.pem）和证书（ca.pem）

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
  3 [root@k8smaster01 work]# for master_ip in ${MASTER_IPS[@]}
  4   do
  5     echo ">>> ${master_ip}"
  6     scp kube-controller-manager*.pem root@${master_ip}:/etc/kubernetes/cert/
  7   done

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
  3 [root@k8smaster01 work]# kubectl config set-cluster kubernetes   4   --certificate-authority=/opt/k8s/work/ca.pem   5   --embed-certs=true   6   --server=${KUBE_APISERVER}   7   --kubeconfig=kube-controller-manager.kubeconfig
  8 
  9 [root@k8smaster01 work]# kubectl config set-credentials system:kube-controller-manager  10   --client-certificate=kube-controller-manager.pem  11   --client-key=kube-controller-manager-key.pem  12   --embed-certs=true  13   --kubeconfig=kube-controller-manager.kubeconfig
 14 
 15 [root@k8smaster01 work]# kubectl config set-context system:kube-controller-manager  16   --cluster=kubernetes  17   --user=system:kube-controller-manager  18   --kubeconfig=kube-controller-manager.kubeconfig
 19 
 20 [root@k8smaster01 work]# kubectl config use-context system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig
 21 
 22 [root@k8smaster01 ~]# cd /opt/k8s/work
 23 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
 24 [root@k8smaster01 work]# for master_ip in ${MASTER_IPS[@]}
 25   do
 26     echo ">>> ${master_ip}"
 27     scp kube-controller-manager.kubeconfig root@${master_ip}:/etc/kubernetes/
 28   done

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
  3 [root@k8smaster01 work]# cat > kube-controller-manager.service.template <<EOF
  4 [Unit]
  5 Description=Kubernetes Controller Manager
  6 Documentation=https://github.com/GoogleCloudPlatform/kubernetes
  7 
  8 [Service]
  9 WorkingDirectory=${K8S_DIR}/kube-controller-manager
 10 ExecStart=/opt/k8s/bin/kube-controller-manager \ 11   --profiling \ 12   --cluster-name=kubernetes \ 13   --controllers=*,bootstrapsigner,tokencleaner \ 14   --kube-api-qps=1000 \ 15   --kube-api-burst=2000 \ 16   --leader-elect \ 17   --use-service-account-credentials\ 18   --concurrent-service-syncs=2 \ 19   --bind-address=##MASTER_IP## \ 20   --secure-port=10252 \ 21   --tls-cert-file=/etc/kubernetes/cert/kube-controller-manager.pem \ 22   --tls-private-key-file=/etc/kubernetes/cert/kube-controller-manager-key.pem \ 23   --port=0 \ 24   --authentication-kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \ 25   --client-ca-file=/etc/kubernetes/cert/ca.pem \ 26   --requestheader-allowed-names="" \ 27   --requestheader-client-ca-file=/etc/kubernetes/cert/ca.pem \ 28   --requestheader-extra-headers-prefix="X-Remote-Extra-" \ 29   --requestheader-group-headers=X-Remote-Group \ 30   --requestheader-username-headers=X-Remote-User \ 31   --authorization-kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \ 32   --cluster-signing-cert-file=/etc/kubernetes/cert/ca.pem \ 33   --cluster-signing-key-file=/etc/kubernetes/cert/ca-key.pem \ 34   --experimental-cluster-signing-duration=8760h \ 35   --horizontal-pod-autoscaler-sync-period=10s \ 36   --concurrent-deployment-syncs=10 \ 37   --concurrent-gc-syncs=30 \ 38   --node-cidr-mask-size=24 \ 39   --service-cluster-ip-range=${SERVICE_CIDR} \ 40   --pod-eviction-timeout=6m \ 41   --terminated-pod-gc-threshold=10000 \ 42   --root-ca-file=/etc/kubernetes/cert/ca.pem \ 43   --service-account-private-key-file=/etc/kubernetes/cert/ca-key.pem \ 44   --kubeconfig=/etc/kubernetes/kube-controller-manager.kubeconfig \ 45   --logtostderr=true \ 46   --v=2
 47 Restart=on-failure
 48 RestartSec=5
 49 
 50 [Install]
 51 WantedBy=multi-user.target
 52 EOF

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
  3 [root@k8smaster01 work]# for (( i=0; i < 3; i++ ))
  4   do
  5     sed -e "s/##MASTER_NAME##/${MASTER_NAMES[i]}/" -e "s/##MASTER_IP##/${MASTER_IPS[i]}/" kube-controller-manager.service.template > kube-controller-manager-${MASTER_IPS[i]}.service
  6   done						#修正相应IP
  7 [root@k8smaster01 work]# ls kube-controller-manager*.service
  8 [root@k8smaster01 ~]# cd /opt/k8s/work
  9 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
 10 [root@k8smaster01 work]# for master_ip in ${MASTER_IPS[@]}
 11   do
 12     echo ">>> ${master_ip}"
 13     scp kube-controller-manager-${master_ip}.service root@${master_ip}:/etc/systemd/system/kube-controller-manager.service
 14   done						#分发system

  1 [root@k8smaster01 ~]# cd /opt/k8s/work
  2 [root@k8smaster01 work]# source /opt/k8s/bin/environment.sh
  3 [root@k8smaster01 work]# for master_ip in ${MASTER_IPS[@]}
  4   do
  5     echo ">>> ${master_ip}"
  6     ssh root@${master_ip} "mkdir -p ${K8S_DIR}/kube-controller-manager"
  7     ssh root@${master_ip} "systemctl daemon-reload && systemctl enable kube-controller-manager && systemctl restart kube-controller-manager"
  8   done

  1 [root@k8smaster01 ~]# source /opt/k8s/bin/environment.sh
  2 [root@k8smaster01 ~]# for master_ip in ${MASTER_IPS[@]}
  3   do
  4     echo ">>> ${master_ip}"
  5     ssh root@${master_ip} "systemctl status kube-controller-manager|grep Active"
  6   done

  1 [root@k8smaster01 ~]# curl -s --cacert /opt/k8s/work/ca.pem --cert /opt/k8s/work/admin.pem --key /opt/k8s/work/admin-key.pem https://172.24.8.71:10252/metrics |head

  1 [root@k8smaster01 ~]# kubectl describe clusterrole system:kube-controller-manager

  1 [root@k8smaster01 ~]# kubectl get clusterrole|grep controller

  1 [root@k8smaster01 ~]# kubectl describe clusterrole system:controller:deployment-controller

  1 [root@k8smaster01 ~]# kubectl get endpoints kube-controller-manager --namespace=kube-system  -o yaml