二进制安装k8s - 0.6 master安装 kube-apiserver 、kubu-controller-manager 、kube-scheduler

创建 kubernetes 证书签名请求

vim /data/k8s/cert/kubernetes-csr.json

{
  "CN": "kubernetes",
  "hosts": [
    "127.0.0.1",
    "{{ host }}",
    "10.44.0.1",
    "kubernetes",
    "kubernetes.default",
    "kubernetes.default.svc",
    "kubernetes.default.svc.cluster",
    "kubernetes.default.svc.cluster.local"
  ],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "SiChuan",
      "L": "ChengDu",
      "O": "k8s",
      "OU": "Lswzw"
    }
  ]
}

注：
hosts 字段指定授权使用该证书的 IP 或域名列表，vip 地址、apiserver节点 IP、kubernetes 服务 IP 和域名、等须要访问api的地址；
10.44.0.1 为 svc 地址段
我这只有1个matser host 就替换为 192.168.100.59

创建 kubernetes 证书和私钥

cd /data/k8s/cert

cfssl gencert 
  -ca=ca.pem 
  -ca-key=ca-key.pem 
  -config=ca-config.json 
  -profile=kubernetes kubernetes-csr.json | cfssljson -bare kubernetes

创建aggregator proxy相关证书

vim /data/k8s/cert/aggregator-proxy-csr.json

{
  "CN": "aggregator",
  "hosts": [],
  "key": {
    "algo": "rsa",
    "size": 2048
  },
  "names": [
    {
      "C": "CN",
      "ST": "SiChuan",
      "L": "ChengDu",
      "O": "k8s",
      "OU": "Lswzw"
    }
  ]
}

创建 aggregator-proxy证书和私钥

cfssl gencert 
  -ca=ca.pem 
  -ca-key=ca-key.pem 
  -config=ca-config.json 
  -profile=kubernetes aggregator-proxy-csr.json | cfssljson -bare aggregator-proxy

创建 master 服务的 systemd 文件

文件放 /etc/systemd/system/

• kube-apiserver.service

[Unit]
Description=Kubernetes API Server
Documentation=https://github.com/GoogleCloudPlatform/kubernetes
After=network.target

[Service]
ExecStart=/data/k8s/bin/kube-apiserver 
  --advertise-address=192.168.100.59 
  --allow-privileged=true 
  --anonymous-auth=false 
  --authorization-mode=Node,RBAC 
  --bind-address=192.168.100.59 
  --client-ca-file=/data/k8s/cert/ca.pem 
  --endpoint-reconciler-type=lease 
  --etcd-cafile=/data/k8s/cert/ca.pem 
  --etcd-certfile=/data/k8s/cert/kubernetes.pem 
  --etcd-keyfile=/data/k8s/cert/kubernetes-key.pem 
  --etcd-servers=https://192.168.100.59:2379 
  --kubelet-certificate-authority=/data/k8s/cert/ca.pem 
  --kubelet-client-certificate=/data/k8s/cert/admin.pem 
  --kubelet-client-key=/data/k8s/cert/admin-key.pem 
  --kubelet-https=true 
  --service-account-key-file=/data/k8s/cert/ca.pem 
  --service-cluster-ip-range=10.44.0.0/16 
  --service-node-port-range=1000-65535 
  --tls-cert-file=/data/k8s/cert/kubernetes.pem 
  --tls-private-key-file=/data/k8s/cert/kubernetes-key.pem 
  --requestheader-client-ca-file=/data/k8s/cert/ca.pem 
  --requestheader-allowed-names= 
  --requestheader-extra-headers-prefix=X-Remote-Extra- 
  --requestheader-group-headers=X-Remote-Group 
  --requestheader-username-headers=X-Remote-User 
  --proxy-client-cert-file=/data/k8s/cert/aggregator-proxy.pem 
  --proxy-client-key-file=/data/k8s/cert/aggregator-proxy-key.pem 
  --enable-aggregator-routing=true 
  --v=2
Restart=always
RestartSec=5
Type=notify
LimitNOFILE=65536

[Install]
WantedBy=multi-user.target

• kube-controller-manager.service

[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/GoogleCloudPlatform/kubernetes

[Service]
ExecStart=/data/k8s/bin/kube-controller-manager 
  --address=127.0.0.1 
  --allocate-node-cidrs=true 
  --cluster-cidr=10.244.0.0/16 
  --cluster-name=kubernetes 
  --cluster-signing-cert-file=/data/k8s/cert/ca.pem 
  --cluster-signing-key-file=/data/k8s/cert/ca-key.pem 
  --kubeconfig=/data/k8s/conf/kube-controller-manager.kubeconfig 
  --leader-elect=true 
  --node-cidr-mask-size=24 
  --root-ca-file=/data/k8s/cert/ca.pem 
  --service-account-private-key-file=/data/k8s/cert/ca-key.pem 
  --service-cluster-ip-range=10.44.0.0/16 
  --use-service-account-credentials=true 
  --v=2
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target

• kube-scheduler.service

[Unit]
Description=Kubernetes Scheduler
Documentation=https://github.com/GoogleCloudPlatform/kubernetes

[Service]
ExecStart=/data/k8s/bin/kube-scheduler 
  --address=127.0.0.1 
  --kubeconfig=/data/k8s/conf/kube-scheduler.kubeconfig 
  --leader-elect=true 
  --v=2
Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target

注：
须要修改上面启动里的ip 信息

启动 master 服务

systemctl daemon-reload
systemctl restart kube-apiserver
systemctl restart kube-controller-manager
systemctl restart kube-scheduler

配置、创建 admin用户rbac权限

• basic-auth-rbac.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: basic-auth-binding
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- apiGroup: rbac.authorization.k8s.io
  kind: User
  name: admin

# 拷贝admin认证文件
cp /data/k8s/conf/kubectl.kubeconfig ~/.kube/config

kubectl apply -f basic-auth-rbac.yaml

查看master状态

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

所有都是显示OK! master搭建完成。

最后

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