服务器信息

在阿里云买了个抢占式的服务器   
    
    
   ，地区为华南广州


     


     


     

，系统为Ubuntu 20.04 




 




 




，8核16GB    
    
    
。

安装Docker

命令如下：

$ apt-get update -y $ apt-get upgrade -y $ apt-get install -y docker.io

安装成功后   

   

   

  ，检查一下版本：

$ docker version Client: Version: 20.10.7 API version: 1.41 Go version: go1.13.8 Git commit: 20.10.7-0ubuntu5~20.04.2 Built: Mon Nov 1 00:34:17 2021 OS/Arch: linux/amd64 Context: default Experimental: true Server: Engine: Version: 20.10.7 API version: 1.41 (minimum version 1.12) Go version: go1.13.8 Git commit: 20.10.7-0ubuntu5~20.04.2 Built: Fri Oct 22 00:45:53 2021 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.5.5-0ubuntu3~20.04.1 GitCommit: runc: Version: 1.0.1-0ubuntu2~20.04.1 GitCommit: docker-init: Version: 0.19.0 GitCommit:

要修改Docker配置文件

     

     

     
，让它可以使用私有的registry：

cat << EOF | sudo tee /etc/docker/daemon.json { "insecure-registries" : [ "172.30.0.0/16" ] } EOF

然后重启一下Docker即可：

systemctl restart docker

安装OpenShift

下载并解压对应的可执行文件：

# 下载 $ wget https://github.com/openshift/origin/releases/download/v3.11.0/openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz # 解压 $ tar xvf openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit.tar.gz # 复制到bin目录 $ cp openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit/oc /usr/local/bin/ $ cp openshift-origin-client-tools-v3.11.0-0cbc58b-linux-64bit/kubectl /usr/local/bin/ # 检查版本 $ oc version oc v3.11.0+0cbc58b kubernetes v1.11.0+d4cacc0 features: Basic-Auth GSSAPI Kerberos SPNEGO

启动集群
  




  




  




，第一次需要比较长的时候  


  


  


 ，因为需要下载镜像：

$ oc cluster up Getting a Docker client ... Checking if image openshift/origin-control-plane:v3.11 is available ... Creating shared mount directory on the remote host ... Determining server IP ... Checking if OpenShift is already running ... Checking for supported Docker version (=>1.22) ... Checking if insecured registry is configured properly in Docker ... Checking if required ports are available ... Checking if OpenShift client is configured properly ... Checking if image openshift/origin-control-plane:v3.11 is available ... Starting OpenShift using openshift/origin-control-plane:v3.11 ... I0301 22:24:39.111730 51771 flags.go:30] Running "create-kubelet-flags" I0301 22:24:39.541760 51771 run_kubelet.go:49] Running "start-kubelet" I0301 22:24:39.624336 51771 run_self_hosted.go:181] Waiting for the kube-apiserver to be ready ... I0301 22:25:30.631581 51771 interface.go:26] Installing "kube-proxy" ... I0301 22:25:30.631597 51771 interface.go:26] Installing "kube-dns" ... I0301 22:25:30.631604 51771 interface.go:26] Installing "openshift-service-cert-signer-operator" ... I0301 22:25:30.631609 51771 interface.go:26] Installing "openshift-apiserver" ... I0301 22:25:30.631624 51771 apply_template.go:81] Installing "openshift-apiserver" I0301 22:25:30.631673 51771 apply_template.go:81] Installing "kube-dns" I0301 22:25:30.631682 51771 apply_template.go:81] Installing "openshift-service-cert-signer-operator" I0301 22:25:30.631689 51771 apply_template.go:81] Installing "kube-proxy" I0301 22:25:31.680155 51771 interface.go:41] Finished installing "kube-proxy" "kube-dns" "openshift-service-cert-signer-operator" "openshift-apiserver" I0301 22:29:04.695159 51771 run_self_hosted.go:242] openshift-apiserver available I0301 22:29:04.695183 51771 interface.go:26] Installing "openshift-controller-manager" ... I0301 22:29:04.695201 51771 apply_template.go:81] Installing "openshift-controller-manager" I0301 22:29:05.924403 51771 interface.go:41] Finished installing "openshift-controller-manager" Adding default OAuthClient redirect URIs ... Adding registry ... Adding router ... Adding centos-imagestreams ... Adding sample-templates ... Adding persistent-volumes ... Adding web-console ... I0301 22:29:05.934015 51771 interface.go:26] Installing "openshift-image-registry" ... I0301 22:29:05.934027 51771 interface.go:26] Installing "openshift-router" ... I0301 22:29:05.934034 51771 interface.go:26] Installing "centos-imagestreams" ... I0301 22:29:05.934039 51771 interface.go:26] Installing "sample-templates" ... I0301 22:29:05.934045 51771 interface.go:26] Installing "persistent-volumes" ... I0301 22:29:05.934050 51771 interface.go:26] Installing "openshift-web-console-operator" ... I0301 22:29:05.934129 51771 interface.go:26] Installing "sample-templates/mongodb" ... I0301 22:29:05.934141 51771 apply_list.go:67] Installing "centos-imagestreams" I0301 22:29:05.934172 51771 apply_list.go:67] Installing "sample-templates/mongodb" I0301 22:29:05.934145 51771 interface.go:26] Installing "sample-templates/mysql" ... I0301 22:29:05.934296 51771 interface.go:26] Installing "sample-templates/cakephp quickstart" ... I0301 22:29:05.934306 51771 interface.go:26] Installing "sample-templates/django quickstart" ... I0301 22:29:05.934315 51771 interface.go:26] Installing "sample-templates/rails quickstart" ... I0301 22:29:05.934326 51771 interface.go:26] Installing "sample-templates/mariadb" ... I0301 22:29:05.934335 51771 interface.go:26] Installing "sample-templates/postgresql" ... I0301 22:29:05.934343 51771 interface.go:26] Installing "sample-templates/dancer quickstart" ... I0301 22:29:05.934351 51771 interface.go:26] Installing "sample-templates/nodejs quickstart" ... I0301 22:29:05.934360 51771 interface.go:26] Installing "sample-templates/jenkins pipeline ephemeral" ... I0301 22:29:05.934375 51771 interface.go:26] Installing "sample-templates/sample pipeline" ... I0301 22:29:05.934409 51771 apply_list.go:67] Installing "sample-templates/sample pipeline" I0301 22:29:05.934539 51771 apply_list.go:67] Installing "sample-templates/mysql" I0301 22:29:05.934635 51771 apply_list.go:67] Installing "sample-templates/cakephp quickstart" I0301 22:29:05.934722 51771 apply_list.go:67] Installing "sample-templates/dancer quickstart" I0301 22:29:05.934724 51771 apply_list.go:67] Installing "sample-templates/nodejs quickstart" I0301 22:29:05.934748 51771 apply_list.go:67] Installing "sample-templates/jenkins pipeline ephemeral" I0301 22:29:05.934772 51771 apply_list.go:67] Installing "sample-templates/mariadb" I0301 22:29:05.934796 51771 apply_list.go:67] Installing "sample-templates/django quickstart" I0301 22:29:05.934815 51771 apply_list.go:67] Installing "sample-templates/rails quickstart" I0301 22:29:05.934343 51771 apply_template.go:81] Installing "openshift-web-console-operator" I0301 22:29:05.934826 51771 apply_list.go:67] Installing "sample-templates/postgresql" I0301 22:29:08.010606 51771 interface.go:41] Finished installing "sample-templates/mongodb" "sample-templates/mysql" "sample-templates/cakephp quickstart" "sample-templates/django quickstart" "sample-templates/rails quickstart" "sample-templates/mariadb" "sample-templates/postgresql" "sample-templates/dancer quickstart" "sample-templates/nodejs quickstart" "sample-templates/jenkins pipeline ephemeral" "sample-templates/sample pipeline" I0301 22:29:50.500686 51771 interface.go:41] Finished installing "openshift-image-registry" "openshift-router" "centos-imagestreams" "sample-templates" "persistent-volumes" "openshift-web-console-operator" Login to server ... Creating initial project "myproject" ... Server Information ... OpenShift server started. The server is accessible via web console at: https://127.0.0.1:8443 You are logged in as: User: developer Password: <any value> To login as administrator: oc login -u system:admin

登陆：

$ oc login -u system:admin

查看命令空间：

# oc get ns NAME STATUS AGE default Active 6m kube-dns Active 6m kube-proxy Active 6m kube-public Active 6m kube-system Active 6m myproject Active 2m openshift Active 3m openshift-apiserver Active 6m openshift-controller-manager Active 3m openshift-core-operators Active 6m openshift-infra Active 6m openshift-node Active 3m openshift-service-cert-signer Active 6m openshift-web-console Active 3m

发现与kubectl差不多    


     


     


   。

查看所有Pods如下：

$ oc get pods --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE default docker-registry-1-72zc5 1/1 Running 0 5m default persistent-volume-setup-75s9s 0/1 Completed 0 6m default router-1-nglvw 1/1 Running 0 6m kube-dns kube-dns-zqs5d 1/1 Running 0 9m kube-proxy kube-proxy-p75mh 1/1 Running 0 9m kube-system kube-controller-manager-localhost 1/1 Running 0 9m kube-system kube-scheduler-localhost 1/1 Running 0 9m kube-system master-api-localhost 1/1 Running 0 8m kube-system master-etcd-localhost 1/1 Running 0 8m openshift-apiserver openshift-apiserver-4rwzd 1/1 Running 0 9m openshift-controller-manager openshift-controller-manager-wvwkw 1/1 Running 0 6m openshift-core-operators openshift-service-cert-signer-operator-6d477f986b-rkcww 1/1 Running 0 9m openshift-core-operators openshift-web-console-operator-664b974ff5-vtwm8 1/1 Running 0 6m openshift-service-cert-signer apiservice-cabundle-injector-8ffbbb6dc-6lkvl 1/1 Running 0 7m openshift-service-cert-signer service-serving-cert-signer-668c45d5f-qjwkj 1/1 Running 0 7m openshift-web-console webconsole-c877c8b45-m5hpx 1/1 Running 0 5m $ kubectl get pods --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE default docker-registry-1-72zc5 1/1 Running 0 5m default persistent-volume-setup-75s9s 0/1 Completed 0 6m default router-1-nglvw 1/1 Running 0 5m kube-dns kube-dns-zqs5d 1/1 Running 0 8m kube-proxy kube-proxy-p75mh 1/1 Running 0 8m kube-system kube-controller-manager-localhost 1/1 Running 0 9m kube-system kube-scheduler-localhost 1/1 Running 0 9m kube-system master-api-localhost 1/1 Running 0 8m kube-system master-etcd-localhost 1/1 Running 0 8m openshift-apiserver openshift-apiserver-4rwzd 1/1 Running 0 8m openshift-controller-manager openshift-controller-manager-wvwkw 1/1 Running 0 6m openshift-core-operators openshift-service-cert-signer-operator-6d477f986b-rkcww 1/1 Running 0 8m openshift-core-operators openshift-web-console-operator-664b974ff5-vtwm8 1/1 Running 0 6m openshift-service-cert-signer apiservice-cabundle-injector-8ffbbb6dc-6lkvl 1/1 Running 0 7m openshift-service-cert-signer service-serving-cert-signer-668c45d5f-qjwkj 1/1 Running 0 7m openshift-web-console webconsole-c877c8b45-m5hpx 1/1 Running 0 5m

访问Dashboard

地址为：https://8.134.68.154:8443/console

但是访问会失败 
     
     
     ，会重定向到127.0.0.1

   




   




   




，解决方案如下：

$ oc cluster down $ rm -rf ./openshift.local.clusterup/ $ oc cluster up --public-hostname=8.134.68.154

重启后 



 



 



，再访问就可以了




 




 




 

。

oc常用命令

# 登陆 oc login -u system -p admin https://8.134.68.154:8443 oc login -u developer -p pkslow https://8.134.68.154:8443 oc login -u=<username> -p=<password> --server=<your-openshift-server> --insecure-skip-tls-verify # 切换project oc project <myproject> oc login -n <myproject> # 创建资源 oc create -f myobject.yaml -n <myproject> oc create configmap propsfilecm --from-file=application.properties oc set volumes dc/myapp --add --overwrite=true --name=configmap-volume --mount-path=/data -t configmap --configmap-name=propsfilecm oc create secret generic oia-secret --from-literal=username=myuser --from-literal=password=mypassword oc set volumes dc/myapp --add --name=secret-volume --mount-path=/opt/app-root/ --secret-name=oia-secret # 更新 oc patch svc mysvc --type merge --patch {"spec":{"ports":[{"port": 8080, "targetPort": 5000 }]}} # 调试访问 oc exec <mypod> cat /opt/app-root/myapp.config oc rsh <mypod oc debug dc <mydc> # 伸缩 oc scale dc <mydc> --replicas=5 oc autoscale dc/app-cli --min 2 --max 5 --cpu-percent=75 # 其它 oc whoami oc status oc logs pod <mypod> oc get pods --all-namespaces oc describe pod <mypod> oc get services --sort-by=.metadata.name oc delete all -l app=tomcat oc delete pod <mypod> --grace-period=0 oc export bc,dc,is,svc --as-template=myapp.yaml

附

用到的Images：

# docker images REPOSITORY TAG IMAGE ID CREATED SIZE openshift/origin-node v3.11 3f7a62b09e77 3 months ago 1.2GB openshift/origin-control-plane v3.11 6608ab37a132 3 months ago 839MB openshift/origin-haproxy-router v3.11 ecaa11886824 3 months ago 417MB openshift/origin-deployer v3.11 d35bd5080535 3 months ago 390MB openshift/origin-hyperkube v3.11 0cfb433fadc5 3 months ago 515MB openshift/origin-cli v3.11 33db4aca59ae 3 months ago 390MB openshift/origin-hypershift v3.11 9e866d795822 3 months ago 556MB openshift/origin-pod v3.11 09e1f40f223e 3 months ago 267MB openshift/origin-docker-registry v3.11 9dffb2abf1dd 3 years ago 310MB openshift/origin-web-console v3.11 be30b6cce5fa 3 years ago 339MB openshift/origin-service-serving-cert-signer v3.11 47dadf9d43b6 3 years ago 276MB