4-13 部署kubernetes Dashboard web 界面

Kubernetes Dashboard 仪表盘是一个志在通用的基于web的监控和操作界面加入 kubernetes 的项目

13.1.1 创建dashboard 。ymal 配置文件

启动master

systemctl restart kube-apiserver.service kube-controller-manager.service kube-proxy.service kube-scheduler.service

开机自启动

[root@master ~]# systemctl enable kube-apiserver.service kube-controller-manager.service kube-proxy.service kube-scheduler.service

查看环境

[root@master ~]# kubectl get node

NAME STATUS AGE

node1 Ready 1d

node2 Ready 1d

接下来就可以做试验了

13.1.1

dashboard-deployment.yaml dashboard-service.yaml 两个包上传到linux 服务器上

13 vim dashboard-deployment.yaml

写入以下内容

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: docker.io/bestwu/kubernetes-dashboard-amd64:v1.6.3

imagePullPolicy: IfNotPresent

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://192.168.24.68:8080

# - --apiserver-host=http://192.168.1.63:8080

livenessProbe:

httpGet:

path: /

port: 9090

initialDelaySeconds: 30

[root@master ~]# vim dashboard-service.yaml 配置文件

apiVersion: v1

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

扩展：service 的三种端口

port ： service 暴露在cluster ip上的端口，port 是提供给集群内部客户防卫service 的入口

nodePort : nodePort 是k8s 提供给集群外部客户访问service 入口的一种方式

targetPort ：是pod 中容器实例上的端口，从port 和nodePort 上到来的数据最终经过kube-proxy 流入到后端pod的targetPort 进入容器

方法1 上传镜像

开始导入镜像

[root@node1 ~]# cat pod-infrastructure.tar | docker import - pod-infrastructure.tar

[root@node1 ~]# docker load -i kubernetes-dashboard-amd64.tar

[root@node2 ~]# cat pod-infrastructure.tar | docker import - pod-infrastructure.tar

[root@node2 ~]# docker load -i kubernetes-dashboard-amd64.tar

查看镜像

[root@node2 ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

pod-infrastructure.tar latest 62b33f979ece 45 seconds ago 206 MB

docker.io/mritd/kubernetes-dashboard-amd64 latest 75f167b703e6 3 years ago 86.3 MB

13.1.4 启动dashboard 的deployment 和service

启动配置文件

root@master ~]# mv /root/dashboard-* /etc/kubernetes/

[root@master ~]#

创建pod

[root@master ~]# kubectl create -f /etc/kubernetes/dashboard-deployment.yaml

deployment "kubernetes-dashboard-latest" created

[root@master ~]# kubectl create -f /etc/kubernetes/dashboard-service.yaml

service "kubernetes-dashboard" created

[root@master ~]# kubectl get deployment --all-namespaces

NAMESPACE NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE

kube-system kubernetes-dashboard-latest 1 1 1 0 2m

[root@master ~]# kubectl get svc --all-namespaces

NAMESPACE NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE

default kubernetes 10.254.0.1 <none> 443/TCP 1d

kube-system kubernetes-dashboard 10.254.162.137 <none> 80/TCP 3m

没有创建成功

[root@master ~]# kubectl get pod -o wide --all-namespaces

NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE

kube-system kubernetes-dashboard-latest-1114339607-nr9wb 0/1 ContainerCreating 0 10m <none> node2