1、 kube-controller-manager准备
默认kube-controller-manager 部署在kube-apiserver部署的服务器上面服务器的配置等在这就不在列出来
二进制文件以及包含在kube-apiserver一起所以不在进行二进制的下载跟分发
2、生成kube-controller-manager访问kube-apiserver 证书
cat << EOF | tee /apps/work/k8s/cfssl/k8s/k8s_controller_manager.json
{
"CN": "system:kube-controller-manager",
"hosts": [""],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "GuangDong",
"L": "GuangZhou",
"O": "system:kube-controller-manager",
"OU": "Kubernetes-manual"
}
]
}
EOF
## 生成 Kubernetes Controller Manager 证书和私钥
cfssl gencert
-ca=/apps/work/k8s/cfssl/pki/k8s/k8s-ca.pem
-ca-key=/apps/work/k8s/cfssl/pki/k8s/k8s-ca-key.pem
-config=/apps/work/k8s/cfssl/ca-config.json
-profile=kubernetes
/apps/work/k8s/cfssl/k8s/k8s_controller_manager.json |
cfssljson -bare /apps/work/k8s/cfssl/pki/k8s/k8s_controller_manager
3、创建kube_controller_manager.kubeconfig
cd /apps/work/k8s/kubernetes/server/config
kubectl config set-cluster kubernetes
--certificate-authority=/apps/work/k8s/cfssl/pki/k8s/k8s-ca.pem
--embed-certs=true
--server=https://192.168.3.10:5443
--kubeconfig=kube_controller_manager.kubeconfig
kubectl config set-credentials system:kube-controller-manager
--client-certificate=/apps/work/k8s/cfssl/pki/k8s/k8s_controller_manager.pem
--embed-certs=true
--client-key=/apps/work/k8s/cfssl/pki/k8s/k8s_controller_manager-key.pem
--kubeconfig=kube_controller_manager.kubeconfig
kubectl config set-context kubernetes
--cluster=kubernetes
--user=system:kube-controller-manager
--kubeconfig=kube_controller_manager.kubeconfig
kubectl config use-context kubernetes --kubeconfig=kube_controller_manager.kubeconfig
说明：--server=https://192.168.3.10:5443 为每台kube-apiserver IP加端口不使用vip ip 连接
4、kube-controller-manager 一些特殊参数的说明
service-account-private-key-file 参数必须与 kube-apiserver 参数service-account-key-file 配对不然自动签发证书会失败没权限
cluster-cidr 参数docker 集群网段 service-cluster-ip-range 参数k8s 集群网段
node-cidr-mask-size k8s node 节点子网
5、创建kube-controller-manager 启动配置 所有服务器配置一样
说明： --address不能是服务器ip如果写服务器的ip kubectl get cs 就会报错
cd /apps/work/k8s/kubernetes/server/conf
vi kube-controller-manager
KUBE_CONTROLLER_MANAGER_OPTS="--logtostderr=false
--leader-elect=true
--address=0.0.0.0
--service-cluster-ip-range=10.64.0.0/16
--cluster-cidr=10.48.0.0/12
--node-cidr-mask-size=24
--cluster-name=kubernetes
--allocate-node-cidrs=true
--kubeconfig=/apps/kubernetes/config/kube_controller_manager.kubeconfig
--authentication-kubeconfig=/apps/kubernetes/config/kube_controller_manager.kubeconfig
--authorization-kubeconfig=/apps/kubernetes/config/kube_controller_manager.kubeconfig
--use-service-account-credentials=true
--client-ca-file=/apps/kubernetes/ssl/k8s/k8s-ca.pem
--requestheader-client-ca-file=/apps/kubernetes/ssl/k8s/k8s-ca.pem
--node-monitor-grace-period=40s
--node-monitor-period=5s
--pod-eviction-timeout=5m0s
--terminated-pod-gc-threshold=50
--alsologtostderr=true
--cluster-signing-cert-file=/apps/kubernetes/ssl/k8s/k8s-ca.pem
--cluster-signing-key-file=/apps/kubernetes/ssl/k8s/k8s-ca-key.pem
--deployment-controller-sync-period=10s
--experimental-cluster-signing-duration=86700h0m0s
--enable-garbage-collector=true
--root-ca-file=/apps/kubernetes/ssl/k8s/k8s-ca.pem
--service-account-private-key-file=/apps/kubernetes/ssl/k8s/k8s-ca-key.pem
--feature-gates=RotateKubeletServerCertificate=true,RotateKubeletClientCertificate=true
--controllers=*,bootstrapsigner,tokencleaner
--horizontal-pod-autoscaler-use-rest-clients=true
--horizontal-pod-autoscaler-sync-period=10s
--flex-volume-plugin-dir=/apps/kubernetes/kubelet-plugins/volume
--tls-cert-file=/apps/kubernetes/ssl/k8s/k8s_controller_manager.pem
--tls-private-key-file=/apps/kubernetes/ssl/k8s/k8s_controller_manager-key.pem
--kube-api-qps=100
--kube-api-burst=100
--log-dir=/apps/kubernetes/log
--v=2"
6、创建kube-controller-manager.service 启动文件
cd /apps/work/k8s/kubernetes/
vim kube-controller-manager.service
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/kubernetes/kubernetes
[Service]
LimitNOFILE=1024000
LimitNPROC=1024000
LimitCORE=infinity
LimitMEMLOCK=infinity
EnvironmentFile=-/apps/kubernetes/conf/kube-controller-manager
ExecStart=/apps/kubernetes/bin/kube-controller-manager $KUBE_CONTROLLER_MANAGER_OPTS
Restart=on-failure
RestartSec=5
User=k8s
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WantedBy=multi-user.target
7、分发kube-controller-manager 配置文件启动文件
说明： 使用ansible 分发时kube_controller_manager.kubeconfig server=https://192.168.3.10:5443 可以使用参数进行分发
server=https://{{ ansible_ssh_host }}:5443 这样就不用每次修改修改 ansible_ssh_host 参数就是连接远程服务器ip
分发 kube_controller_manager.kubeconfig
ansible -i host master -m template -a "src=server/config/kube_controller_manager.kubeconfig dest=/apps/kubernetes/config owner=k8s group=root mode=644"
分发：kube-controller-manager
ansible -i host master -m copy -a "src=server/conf/kube-controller-manager dest=/apps/kubernetes/conf owner=k8s group=root mode=644"
分发：kube-controller-manager.service
ansible -i host master -m copy -a "src=kube-controller-manager.service dest=/usr/lib/systemd/system/kube-controller-manager.service"
8、启动kube-controller-manager
ansible -i host master -m shell -a "systemctl daemon-reload"
ansible -i host master -m shell -a "systemctl enable kube-controller-manager"
ansible -i host master -m shell -a "systemctl start kube-controller-manager"
ansible -i host master -m shell -a "systemctl status kube-controller-manager"
9、查看kube-controller-manager 是否配置成功
kubectl get cs
[root@jenkins bin]# kubectl get cs
NAME STATUS MESSAGE ERROR
controller-manager Healthy ok
scheduler Healthy ok
etcd-4 Healthy {"health":"true"}
etcd-3 Healthy {"health":"true"}
etcd-5 Healthy {"health":"true"}
etcd-0 Healthy {"health":"true"}
etcd-1 Healthy {"health":"true"}
etcd-2 Healthy {"health":"true"}
10 、配置 kube-controller-manager，kubelet 、kube-scheduler 访问kube-api 用户授权
授予 kubernetes API 的权限
kubectl create clusterrolebinding controller-node-clusterrolebing --clusterrole=system:kube-controller-manager --user=system:kube-controller-manager
kubectl create clusterrolebinding scheduler-node-clusterrolebing --clusterrole=system:kube-scheduler --user=system:kube-scheduler
kubectl create clusterrolebinding controller-manager:system:auth-delegator --user system:kube-controller-manager --clusterrole system:auth-delegator
授予 kubernetes 证书访问 kubelet API 的权限
kubectl create clusterrolebinding --user system:serviceaccount:kube-system:default kube-system-cluster-admin --clusterrole cluster-admin
kubectl create clusterrolebinding kubelet-node-clusterbinding --clusterrole=system:node --group=system:nodes
kubectl create clusterrolebinding kube-apiserver:kubelet-apis --clusterrole=system:kubelet-api-admin --user kubernetes