Kubernetes的UI界面Kubernetes Dashboard的搭建

时间：2025-02-13 16:04:27

1、搭建准备

Kubernetes集群的安装部署

2、搭建过程

2.1、在master节点上创建kubernetes-dashboard.yaml

cd /etc/kubernetes

vim kubernetes-dashboard.yaml

# Copyright 2015 Google Inc. All Rights Reserved.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#     http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

# Configuration to deploy release version of the Dashboard UI.

#

# Example usage: kubectl create -f <this_file>

kind: Deployment

apiVersion: extensions/v1beta1

metadata:

  labels:

    app: kubernetes-dashboard

    version: v1.1.1

  name: kubernetes-dashboard

  namespace: kube-system

spec:

  replicas: 1

  selector:

    matchLabels:

      app: kubernetes-dashboard

  template:

    metadata:

      labels:

        app: kubernetes-dashboard

    spec:

      containers:

      - name: kubernetes-dashboard

        image: daocloud.io/minunix/kubernetes-dashboard-amd64:v1.1.1

        imagePullPolicy: Always

        ports:

        - containerPort: 9090

          protocol: TCP

        args:

          # Uncomment the following line to manually specify Kubernetes API server Host

          # If not specified, Dashboard will attempt to auto discover the API server and connect

          # to it. Uncomment only if the default does not work.

        - --apiserver-host=http://192.168.44.60:8080

        livenessProbe:

          httpGet:

            path: /

            port: 9090

          initialDelaySeconds: 30

          timeoutSeconds: 30

---

kind: Service

apiVersion: v1

metadata:

  labels:

    app: kubernetes-dashboard

  name: kubernetes-dashboard

  namespace: kube-system

spec:

  type: NodePort

  ports:

  - port: 80

    targetPort: 9090

  selector:

    app: kubernetes-dashboard

2.2、下载pod-infrastructure镜像（每个节点上都需要）

上篇文章中/etc/kubernetes/kubelet文件配置中，有一项配置需要docker的registry.access.redhat.com/rhel7/pod-infrastructure:latest镜像，所以我们先pull下来

先yum安装rhsm

yum install *rhsm* -y

然后下载镜像

docker pull registry.access.redhat.com/rhel7/pod-infrastructure:latest

如果执行上一步报错，就执行以下两步，生成/etc/rhsm/ca/redhat-uep.pem这个文件，然后再执行上一步

wget http://mirror.centos.org/centos/7/os/x86_64/Packages/python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm

rpm2cpio python-rhsm-certificates-1.19.10-1.el7_4.x86_64.rpm | cpio -iv --to-stdout ./etc/rhsm/ca/redhat-uep.pem | tee /etc/rhsm/ca/redhat-uep.pem

2.3、创建Kubernetes Dashboard

在master节点上执行

[root@k8s-master kubernetes]# kubectl create -f kubernetes-dashboard.yaml

执行以下命令，查看是否成功

[root@k8s-master kubernetes]# kubectl get pods --all-namespaces

NAMESPACE     NAME                                   READY     STATUS    RESTARTS   AGE

kube-system   kubernetes-dashboard-878342739-f8nhb   1/1       Running   0          1h

如果上面的status为running，则成功，如果不是的话就需要查看详细信息，看是哪里出错

[root@k8s-master kubernetes]# kubectl describe pods kubernetes-dashboard-878342739-f8nhb  --namespace="kube-system"

2.4、访问UI界面

http://k8s-master:8080/ui

可能会出现以下错误，页面上报错

Error: 'dial tcp 172.17.78.2:9090: getsockopt: connection timed out'

Trying to reach: 'http://172.17.78.2:9090/'

如果出现以上错误，执行以下命令（每台机器都执行一遍）

iptables -P INPUT ACCEPT

iptables -P FORWARD ACCEPT

iptables -F

iptables -L -n

然后再访问UI界面

Kubernetes的UI界面Kubernetes Dashboard的搭建

ojbk。

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