Kubernetes--学习笔记-3-Kubernetes Web UI部署

一、Kubernetes集群环境

请参考Kubernetes--学习笔记-安装配置和服务部署-2

二，创建kubernetes-dashboard.yaml

在master服务器上创建kubernetes-dashboard.yaml文件，并输入以下内容：

# 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-dashboardversion: v1.1.0name: kubernetes-dashboardnamespace: kube-system
spec:replicas: 1selector:matchLabels:app: kubernetes-dashboardtemplate:metadata:labels:app: kubernetes-dashboardspec:containers:- name: kubernetes-dashboardimage: docker.io/mritd/kubernetes-dashboard-amd64imagePullPolicy: Alwaysports:- containerPort: 9090protocol: TCPargs:# 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=10.11.3.56:8080livenessProbe:httpGet:path: /port: 9090initialDelaySeconds: 30timeoutSeconds: 30
---
kind: Service
apiVersion: v1
metadata:labels:app: kubernetes-dashboardname: kubernetes-dashboardnamespace: kube-system
spec:type: NodePortports:- port: 80

修改以下几项：

 image: docker.io/mritd/kubernetes-dashboard-amd64 # 这个镜像在创建之前已docker pull 下载下来，避免网络失败

 - --apiserver-host=10.11.3.56:8080 # 这里改成master这的ip地址，不能用master服务器名称，否则会报错失败

执行以下命令创建kubernetes-dashboard：

systemctl create -f kubernetes-dashboard.yaml

创建完成后，查看Pods和Service的详细信息：

[root@master cloud]# kubectl get pods --all-namespaces
NAMESPACE     NAME                                   READY     STATUS    RESTARTS   AGE
default       nginx-pod                              1/1       Running   0          5h
kube-system   kubernetes-dashboard-350055417-wf8j1   1/1       Running   0          44m
[root@master cloud]#

[root@master cloud]# kubectl describe pods/kubernetes-dashboard-350055417-wf8j1  --namespace="kube-system"
Name:           kubernetes-dashboard-350055417-wf8j1
Namespace:      kube-system
Node:           node-1/10.11.3.61
Start Time:     Wed, 17 Jan 2018 08:07:38 +0100
Labels:         app=kubernetes-dashboardpod-template-hash=350055417
Status:         Running
IP:             172.17.0.3
Controllers:    ReplicaSet/kubernetes-dashboard-350055417
Containers:kubernetes-dashboard:Container ID:       docker://4fab3e7e09bbd80546aec6f3569b3a59723ef983356e59428879fe06e3359861Image:              docker.io/mritd/kubernetes-dashboard-amd64Image ID:           docker-pullable://docker.io/mritd/kubernetes-dashboard-amd64@sha256:377d905c758d08674fd434e567fbfb4411f64a52090d0de7f64fd70b72b2fbebPort:               9090/TCPArgs:--apiserver-host=10.11.3.56:8080State:                      RunningStarted:                  Wed, 17 Jan 2018 08:07:43 +0100Ready:                      TrueRestart Count:              0Liveness:                   http-get http://:9090/ delay=30s timeout=30s period=10s #success=1 #failure=3Volume Mounts:              <none>Environment Variables:      <none>
Conditions:Type          StatusInitialized   True Ready         True PodScheduled  True
No volumes.
QoS Class:      BestEffort
Tolerations:    <none>
Events:FirstSeen     LastSeen        Count   From                    SubObjectPath                           Type            Reason                  Message---------     --------        -----   ----                    -------------                           --------        ------                  -------46m           46m             1       {default-scheduler }                                            Normal          Scheduled               Successfully assigned kubernetes-dashboard-350055417-wf8j1 to node-146m           46m             1       {kubelet node-1}        spec.containers{kubernetes-dashboard}   Normal          Pulling                 pulling image "docker.io/mritd/kubernetes-dashboard-amd64"46m           46m             2       {kubelet node-1}                                                Warning         MissingClusterDNS       kubelet does not have ClusterDNS IP configured and cannot create Pod using "ClusterFirst" policy. Falling back to DNSDefault policy.46m           46m             1       {kubelet node-1}        spec.containers{kubernetes-dashboard}   Normal          Pulled                  Successfully pulled image "docker.io/mritd/kubernetes-dashboard-amd64"46m           46m             1       {kubelet node-1}        spec.containers{kubernetes-dashboard}   Normal          Created                 Created container with docker id 4fab3e7e09bb; Security:[seccomp=unconfined]46m           46m             1       {kubelet node-1}        spec.containers{kubernetes-dashboard}   Normal          Started                 Started container with docker id 4fab3e7e09bb
[root@master cloud]#

查看service 信息：

[root@master cloud]# kubectl describe service/kubernetes-dashboard --namespace="kube-system"
Name:                   kubernetes-dashboard
Namespace:              kube-system
Labels:                 app=kubernetes-dashboard
Selector:               app=kubernetes-dashboard
Type:                   NodePort
IP:                     10.254.85.224
Port:                   <unset> 80/TCP
NodePort:               <unset> 30943/TCP
Endpoints:              172.17.0.3:9090
Session Affinity:       None
No events.
[root@master cloud]#

从kubernetes-dashboard的service详细信息可以看到，该service绑定到了Node节点的30943端口上。现在，通过浏览器访问该端口就能看到Kubernetes的Web UI:

参考链接：

http://blog.csdn.net/u013760355/article/details/70161982

http://blog.csdn.net/zjysource/article/details/52086835

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