k8s-部署-20-dashboard

1、准备dashboard镜像：

~]# docker pull k8scn/kubernetes-dashboard-amd64:v1.8.3

~]# docker tag 0c60bcf89900 harbor.od.com/k8s/dashboard:v1.8.3

~]# docker push harbor.od.com/k8s/dashboard:v1.8.3

 

 

2、准备资源配置清单：

# 在运维主机上
~]# mkdir -p /data/k8s-yaml/dashboard && cd /data/k8s-yaml/dashboard

 

2.1、 创建rbac授权清单

cat >/data/k8s-yaml/dashboard/rbac.yaml <<EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  name: kubernetes-dashboard-admin
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-admin
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    addonmanager.kubernetes.io/mode: Reconcile
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard-admin
  namespace: kube-system
EOF

 2.2、创建depoloy清单：

cat >/data/k8s-yaml/dashboard/dp.yaml <<EOF
apiVersion: apps/v1
kind: Deployment
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      priorityClassName: system-cluster-critical
      containers:
      - name: kubernetes-dashboard
        image: harbor.zq.com/public/dashboard:v1.8.3
        resources:
          limits:
            cpu: 100m
            memory: 300Mi
          requests:
            cpu: 50m
            memory: 100Mi
        ports:
        - containerPort: 8443
          protocol: TCP
        args:
          # PLATFORM-SPECIFIC ARGS HERE
          - --auto-generate-certificates
        volumeMounts:
        - name: tmp-volume
          mountPath: /tmp
        livenessProbe:
          httpGet:
            scheme: HTTPS
            path: /
            port: 8443
          initialDelaySeconds: 30
          timeoutSeconds: 30
      volumes:
      - name: tmp-volume
        emptyDir: {}
      serviceAccountName: kubernetes-dashboard-admin
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"
EOF

 

2.3、创建service清单：

cat >/data/k8s-yaml/dashboard/svc.yaml <<EOF
apiVersion: v1
kind: Service
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    k8s-app: kubernetes-dashboard
  ports:
  - port: 443
    targetPort: 8443
EOF

 

2.4、创建ingress清单暴露服务：

cat >/data/k8s-yaml/dashboard/ingress.yaml <<EOF
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  annotations:
    kubernetes.io/ingress.class: traefik
spec:
  rules:
  - host: dashboard.zq.com
    http:
      paths:
      - backend:
          serviceName: kubernetes-dashboard
          servicePort: 443
EOF

 

3、创建相关资源 ：

# 在任意节点
kubectl create -f http://k8s-yaml.zq.com/dashboard/rbac.yaml
kubectl create -f http://k8s-yaml.zq.com/dashboard/dp.yaml
kubectl create -f http://k8s-yaml.zq.com/dashboard/svc.yaml
kubectl create -f http://k8s-yaml.zq.com/dashboard/ingress.yaml

 

4、添加域名解析 ：

# 添加域名解析 注意：前滚serial编号

vi /var/named/od.com.zone
dashboard          A    10.4.7.10


# 重启服务
systemctl restart named

 

5、浏览器访问验证：

http://dashboard.od.com 

6、dashboard升级至1.10.1版本：

6.1、下载新版镜像

~]# docker pull hexun/kubernetes-dashboard-amd64:v1.10.1

~]# docker tag f9aed6605b81 harbor.od.com/k8s/dashboard:v1.10.1

~]# docker push harbor.od.com/k8s/dashboard:v1.10.1

 

6.2、在线修改直接使用

# 在线修改
~]# kubectl edit deploy kubernetes-dashboard -n kube-system

# 查看
~]# kubectl -n kube-system get pod|grep dashboard

 

 6.3、如何获取token？

# 查看secret
kubectl get secret  -n kube-system

# 获取对应的secret
kubectl -n kube-system describe secrets kubernetes-dashboard-admin-token-85gmd

 

6.4、申请证书

# 在运维主机上
# 创建json 文件
cd /opt/certs/
cat >/opt/certs/dashboard-csr.json <<EOF
{
    "CN": "*.zq.com",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "zq",
            "OU": "ops"
        }
    ]
}
EOF


# 申请证书
cfssl gencert -ca=ca.pem \
      -ca-key=ca-key.pem \
      -config=ca-config.json \
      -profile=server \
      dashboard-csr.json |cfssl-json -bare dashboard

# 查看申请的证书
[root@hdss7-200 certs]# ll |grep dash
-rw-r--r-- 1 root root  993 May  4 12:08 dashboard.csr
-rw-r--r-- 1 root root  280 May  4 12:08 dashboard-csr.json
-rw------- 1 root root 1675 May  4 12:08 dashboard-key.pem
-rw-r--r-- 1 root root 1359 May  4 12:08 dashboard.pem

 

6.5、修改nginx配置，走https：

# 拷贝证书 在10.4.7.11
mkdir /etc/nginx/certs
cd /etc/nginx/certs
scp 10.4.7.200:/opt/certs/dashboard.pem /etc/nginx/certs .
scp 10.4.7.200:/opt/certs/dashboard-key.pem /etc/nginx/certs .


# 修改nginx 配置
cat >/etc/nginx/conf.d/dashboard.zq.com.conf <<'EOF'
server {
    listen       80;
    server_name  dashboard.zq.com;

    rewrite ^(.*)$ https://${server_name}$1 permanent;
}
server {
    listen       443 ssl;
    server_name  dashboard.zq.com;

    ssl_certificate     "certs/dashboard.pem";
    ssl_certificate_key "certs/dashboard-key.pem";
    ssl_session_cache shared:SSL:1m;
    ssl_session_timeout  10m;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;

    location / {
        proxy_pass http://default_backend_traefik;
        proxy_set_header Host       $http_host;
        proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for;
    }
}
EOF


# 重启nginx服务
nginx -t
nginx -s reload

 

6.6、浏览器重新访问：

浏览器访问：http://dashboard.od.com