kubernets集群搭建web管理界面
K8S集群搭建web管理界面
一、部署前查看K8S集群状态
[ ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION 192.168.191.131 NotReady <none> 7d22h v1.12.3 192.168.191.132 Ready <none> 7d21h v1.12.3 [ ~]# kubectl get pod NAME READY STATUS RESTARTS AGE nginx-dbddb74b8-sx4m6 1/1 Running 0 5d14h
二、在master节点部署UI界面
1、创建dashboard工作目录
[ ~]# mkdir /k8s/dashboard
2、推送官方的文件到本地
https://github.com/kubernetes/kubernetes/tree/master/cluster/addons/dashboard
五个导入文档详解：
- dashboard-configmap.yaml 配置映射服务
- dashboard-deployment.yaml 控制器
- dashboard-rbac.yaml 角色控制，访问控制
- dashboard-secret.yaml 安全
- dashboard-service.yaml 服务
创建这些资源时的步骤：
①身份角色
②安全
③配置映射
④控制器
⑤服务
这里我使用dashboard的1.8.4版本。1.8.4版本中有一个配置文件叫controller.yaml,现在的是1.10版本，名称改deployment.yaml，都是控制器。[ ~]# cd /k8s/dashboard/ [ dashboard]# ls [ dashboard]# ls dashboard-configmap.yaml dashboard-controller.yaml dashboard-rbac.yaml dashboard-secret.yaml dashboard-service.yaml k8s-admin.yaml
3.基于yaml文件创建pod资源
- 查看当前各个资源的状态
命名空间[ dashboard]# kubectl get ns NAME STATUS AGE default Active 7d23h kube-public Active 7d23h kube-system Active 7d23h
[ dashboard]# kubectl get pod NAME READY STATUS RESTARTS AGE nginx-dbddb74b8-sx4m6 1/1 Running 0 5d14h [ dashboard]# kubectl get pod -n kube-system No resources found.
kubectl get all //这个all 包含pod、deployment、service和副本replicaset四个资源
[ dashboard]# kubectl get all #这个all 包含pod、deployment、service和副本replicaset四个个资源 NAME READY STATUS RESTARTS AGE pod/nginx-dbddb74b8-sx4m6 1/1 Running 0 5d14h NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 7d23h NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE deployment.apps/nginx 1 1 1 1 5d14h NAME DESIRED CURRENT READY AGE replicaset.apps/nginx-dbddb74b8 1 1 1 5d14h
查看当前k8s中的角色
[ dashboard]# kubectl get Role -n kube-system NAME AGE extension-apiserver-authentication-reader 7d23h system::leader-locking-kube-controller-manager 7d23h system::leader-locking-kube-scheduler 7d23h system:controller:bootstrap-signer 7d23h system:controller:cloud-provider 7d23h system:controller:token-cleaner 7d23h
- 创建rbac资源
[ dashboard]# kubectl create -f dashboard-rbac.yaml role.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created
- 查看创建后的资源状态
[ dashboard]# kubectl get all NAME READY STATUS RESTARTS AGE pod/nginx-dbddb74b8-sx4m6 1/1 Running 0 5d14h NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes ClusterIP 10.0.0.1 <none> 443/TCP 7d23h NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE deployment.apps/nginx 1 1 1 1 5d14h NAME DESIRED CURRENT READY AGE replicaset.apps/nginx-dbddb74b8 1 1 1 5d14h
查看角色，在配置文件中，角色的命名空间指定的是kube-system，所以查看的时候要-n指定
[ dashboard]# kubectl get role -n kube-system NAME AGE extension-apiserver-authentication-reader 7d23h kubernetes-dashboard-minimal 3m system::leader-locking-kube-controller-manager 7d23h system::leader-locking-kube-scheduler 7d23h system:controller:bootstrap-signer 7d23h system:controller:cloud-provider 7d23h system:controller:token-cleaner 7d23h
#创建身份角色 [ dashboard]# kubectl create -f dashboard-rbac.yaml role.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created #创建安全管理 [ dashboard]# kubectl create -f dashboard-secret.yaml secret/kubernetes-dashboard-certs created secret/kubernetes-dashboard-key-holder created #配置映射服务 [ dashboard]# kubectl create -f dashboard-configmap.yaml configmap/kubernetes-dashboard-settings created #创建控制器 #本文创建的是1.84版本所以使用的是controller.yaml，在1.10版本使用的是deployment.yaml，两者都是一样的，都是控制器 [ dashboard]# kubectl create -f dashboard-controller.yaml serviceaccount/kubernetes-dashboard created deployment.apps/kubernetes-dashboard created #创建服务 [ dashboard]# kubectl create -f dashboard-service.yaml service/kubernetes-dashboard created
5.完成后查看创建在指定的kube-system命名空间下
[ dashboard]# kubectl get pods -n kube-system NAME READY STATUS RESTARTS AGE kubernetes-dashboard-65f974f565-m9gm8 0/1 ContainerCreating 0 88s
6.查看访问地址
[ dashboard]# kubectl get pods,svc -n kube-system NAME READY STATUS RESTARTS AGE pod/kubernetes-dashboard-65f974f565-m9gm8 1/1 Running 0 2m49s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/kubernetes-dashboard NodePort 10.0.0.243 <none> 443:30001/TCP 2m24s
此时访问node节点的ip地址
发现并不能访问到，因为此时是不信任的证书
7.创建证书
[ dashboard]# vim dashboard-cert.sh
cat > dashboard-csr.json <<EOF
{
"CN": "Dashboard",
"hosts": [],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
EOF
K8S_CA=$1
cfssl gencert -ca=$K8S_CA/ca.pem -ca-key=$K8S_CA/ca-key.pem -config=$K8S_CA/ca-config.json -profile=kubernetes dashboard-csr.json | cfssljson -bare dashboard
kubectl delete secret kubernetes-dashboard-certs -n kube-system
kubectl create secret generic kubernetes-dashboard-certs --from-file=./ -n kube-system
#执行生成认证证书
[ dashboard]# bash dashboard-cert.sh /root/k8s/k8s-cert/
#在dashboard-controller.yaml的args标签下面增加证书两行
[ dashboard]# vim dashboard-controller.yaml
args:
# PLATFORM-SPECIFIC ARGS HERE
- --auto-generate-certificates
- --tls-key-file=dashboard-key.pem
- --tls-cert-file=dashboard.pem
#重新部署
[ dashboard]# kubectl apply -f dashboard-controller.yaml生成证书后即可正常访问
生成令牌
AGE
dashboard-admin-token-vnm9z kubernetes.io/service-account-token 3 65s
default-token-zb8bw kubernetes.io/service-account-token 3 8d
kubernetes-dashboard-certs Opaque 11 162s
kubernetes-dashboard-key-holder Opaque 2 262s
kubernetes-dashboard-token-ctfp9 kubernetes.io/service-account-token 3 62s
#查看令牌
[ dashboard]# kubectl describe secret dashboard-admin-token-vnm9z -n kube-system
Name: dashboard-admin-token-vnm9z
Namespace: kube-system
Labels: <none>
Annotations: kubernetes.io/service-account.name: dashboard-admin
kubernetes.io/service-account.uid: de06f523-905f-11ea-80d3-000c29535012
Type: kubernetes.io/service-account-token
Data
====
ca.crt: 1359 bytes
namespace: 11 bytes
//复制使用下面的令牌信息即可登录
token: eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.gfj0Yba5aexCLCDiPp2MzFEesuFUOxqJf0HFofijRm5_MjucfsLVdIgWg4eIS8Vuf8Fz7JX0sqhhDN-j4KgNAfIi7ZwREDC73NExYCTpbcBZSVff9MA0ynmLcAySRUToDNS58My2ZQpPsDokI0-wrOyql-VQcTgKdJ3Qwj6wdZVvBGXJlWzDS4AxSZTdJVGJtrfN9SNr1372wqWY7QLJj3zn-mc6F5eLU-bR9DJ7909qSV7Vh-XSJtzbRpbxQk9AGo5r1Rb2I04fchiVLVVE8K362bLtGkjXulmybya_t1naG0_YRlOZDG3GOQcKG0KyvYcFjPWLX89uop7u2Tl5Kg
到这里K8S群集的web管理界面搭建完成了
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