部署dashboard
官网：https://github.com/kubernetes/dashboard
注：1.8版本的dashboard，默认是可以跳过验证的。跳过登录是不科学的，因为我们在配置dashboard的rbac权限时，绑定的角色是system:admin，这个是集群管理员的角色，权限很大，如果任何人都可跳过登录直接使用,那你就等着背锅。所以这边用了1.10.0版本，并配置证书。dashboard当前已经出到了 2.2.0版本。
1、获取dashboard
docker pull k8s.gcr.io/kubernetes-dashboard-amd64:v1.10.1
docker tag 5c4ee6ca42ce harbor.example.com/public/dashboard:v1.10.1
docker push harbor.example.com/public/dashboard:v1.10.1
2、配置资源配置清单，在运维主机上创建（方法与之前的插件配置文件创建方法一致）
RBCD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
deploy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.example.com/public/dashboard:v1.10.1
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
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
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.example.com
http:
paths:
- backend:
serviceName: kubernetes-dashboard
servicePort: 443
EOF
3、创建资源
kubectl create -f http://k8s-yaml.example.com/dashboard/rbac.yaml
kubectl create -f http://k8s-yaml.example.com/dashboard/dp.yaml
kubectl create -f http://k8s-yaml.example.com/dashboard/svc.yaml
kubectl create -f http://k8s-yaml.example.com/dashboard/ingress.yaml
4、配置dashboard域名解析（由于前期已在nginx中添加了泛域名反向代理）
5、通过浏览器验证
使用本机浏览器访问：dashboard.example.com，可以看到安装1.10版本的dashboard，没有skip跳过验证。
6、申请证书（CFSSL证书服务器上操作）
创建json文件
cat >/opt/certs/dashboard-csr.json <<EOF
{
"CN": "*.example.com",
"hosts": [
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "shanghai",
"L": "shanghai",
"O": "sevattal",
"OU": "ops"
}
]
}
EOF
生成申请证书
cfssl gencert -ca=ca.pem \
-ca-key=ca-key.pem \
-config=ca-config.json \
-profile=server \
dashboard-csr.json |cfssl-json -bare dashboard
7、将证书文件部署到前端的nginx反向代理服务器上（若是nginx集群则全部都需要配置上）
创建nginx证书文件目录
mkdir /etc/nginx/certs
将以下证书文件复制到nginx证书目录中
dashboard.pem dashboard-key.pem
创建nginx配置文件
cat >/etc/nginx/conf.d/dashboard.example.com.conf <<'EOF'
server {
listen 80;
server_name dashboard.example.com;
rewrite ^(.*)$ https://${server_name}$1 permanent;
}
server {
listen 443 ssl;
server_name dashboard.example.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
8、使用token登录
获取secret资源列表
kubectl get secret -n kube-system
列表中有很多角色,不同到角色有不同的权限,找到想要的角色dashboard-admin后,再用describe命令获取详情
获取dashboard-admin用户的资源token
kubectl -n kube-system describe secrets kubernetes-dashboard-admin-token-r5v6k
使用令牌登录dashboard
看到以上界面则dashboard部署完成了。