k8s dashboard配置

Posted 2020-10-24 freshmans

 

镜像：https://hub.daocloud.io/#!/repos/f8919a2c-2540-424e-8758-d23cc76b6d80

 

启动Kubernetes集群

 

配置Kubernetes网络，在master和nodes上都需要安装flannel

vi /etc/sysconfig/flanneld
# Flanneld configuration options
# etcd url location. Point this to the server where etcd runs
FLANNEL_ETCD_ENDPOINTS="http://192.168.132.148:2379"
# etcd config key. This is the configuration key that flannel queries
# For address range assignment
FLANNEL_ETCD_PREFIX="/atomic.io/network"
# Any additional options that you want to pass
#FLANNEL_OPTIONS=""

配置etcd中flannel的key,需要在etcd中进行配置（如果做了集群可忽略此步骤）

 

在master节点上启动

systemctl enable flanneld.service 
systemctl start flanneld.service 
service docker restart
systemctl restart kube-apiserver.service
systemctl restart kube-controller-manager.service
systemctl restart kube-scheduler.service

 

在各个Nodes上启动

systemctl enable flanneld.service 
systemctl start flanneld.service 
service docker restart
systemctl restart kubelet.service
systemctl restart kube-proxy.service

 

测试集群

 

配置dashboard并启动

 

编辑一个kubernetes-dashboard.yaml文件

ui.yaml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
# Keep the name in sync with image version and
# gce/coreos/kube-manifests/addons/dashboard counterparts
  name: kubernetes-dashboard-latest
  namespace: kube-system
spec:
  replicas: 1
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
        version: latest
        kubernetes.io/cluster-service: "true"
    spec:
      containers:
      - name: kubernetes-dashboard
        image: daocloud.io/daocloud/google_containers_kubernetes-dashboard-amd64:v1.6.1
        resources:
          # keep request = limit to keep this container in guaranteed class
          limits:
            cpu: 100m
            memory: 50Mi
          requests:
            cpu: 100m
            memory: 50Mi
        ports:
        - containerPort: 9090
        args:
         -  --apiserver-host=http://192.168.132.148:8080
        livenessProbe:
          httpGet:
            path: /
            port: 9090
          initialDelaySeconds: 30
          timeoutSeconds: 30
---
kind: Service
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
spec:
  selector:
    k8s-app: kubernetes-dashboard
  ports:
  - port: 80
    targetPort: 9090

注释:

image 此处要写镜像地址，由于大多数dashboard的镜像国内无法访问，所以找到一个国内可用的
--apiserver-host=http://192.168.132.148:8080 这里为apiserver的地址（node下配置）

 

创建dashboard

[[email protected]_master ~]# kubectl create -f ui.yaml 
deployment "kubernetes-dashboard-latest" created
service "kubernetes-dashboard" created

 

 

查看创建deployment

[[email protected]_master ~]# kubectl get -f ui.yaml 
NAME                                 DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
deploy/kubernetes-dashboard-latest   1         1         1            1           47m

NAME                       CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
svc/kubernetes-dashboard   10.254.159.141   <none>        80/TCP    47m

 

[[email protected]_master ~]# kubectl get pods --all-namespaces
NAMESPACE     NAME                                           READY     STATUS    RESTARTS   AGE
kube-system   kubernetes-dashboard-latest-1381663337-0wwml   1/1       Running   0          48m

如果status处异常可查看日志

[[email protected]_master ~]# kubectl  logs -f   kubernetes-dashboard-latest-1381663337-0wwml -n kube-system

 

[[email protected]_master ~]# kubectl describe po kubernetes-dashboard --namespace=kube-system

正常为

 

错误（提示无法拉取镜像）：

 

访问web (http://192.168.132.148:8080/ui)
Error: ‘dial tcp 10.1.23.2:9090: getsockopt: connection refused‘
需要检查apiserver的地址设置的是否正确（重启apiserver和kubenets）

 

http://192.168.132.148:8080/api/v1/proxy/namespaces/kube-system/services/kubernetes-dashboard/#!/cluster?namespace=kube-system