OpenShift是一个基于容器技术的云平台，这里的容器技术指的就是docker和kubernetes.
Openshift 错误解决
错误信息
failed to run Kubelet: failed to create kubelet: misconfiguration: kubelet cgroup driver: "systemd" is different from docker cgroup driver: "cgroupfs"
解决
vi /usr/lib/systemd/system/docker.service
改为
#ExecStart=/usr/bin/dockerd
ExecStart=/usr/bin/dockerd --exec-opt native.cgroupdriver=systemd
重启docker
systemctl daemon-reload
systemctl restart docker
参考：https://blog.csdn.net/engchina/article/details/78823347
根据官方文档，selinux要修改为：
SELINUX=enforcing SELINUXTYPE=targeted
cd /opt/
tar -zxf openshift-origin-server-v3.7.0-7ed6862-linux-64bit.tar.gz
ln -s openshift-origin-server-v3.7.0-7ed6862-linux-64bit /opt/openshift/
vim /etc/profile
追加 ：PATH=$PATH:/opt/openshift/
source /etc/profile
cd /opt/openshift/
openshift start
访问： https://10.2.1.102:8443
dev/dev
然后deploy
生成pod
然后可以在本机访问
curl 172.17.0.3:8080
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1.部署一个完整的应用
1.1 oc version
看版本
1.2. oc login -u dev https://10.2.1.102:8443 通过oc 命令登录
1.3 通过oc new-project 部署一个新项目hello-world-oc
oc new-project hello-world-oc
1.4 通过oc new-app 部署 openshift/hello-world-openshift 镜像的应用
oc new-app openshift/hello-openshift
5.查看信息
oc describe pod hello-openshift-1-qjrhd
查看命名空间 Namespace: hello-world-oc
标签 Labels: app=hello-openshift
ip地址 IP: 172.17.0.4
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1.设置openshift 管理员admin密码
cd /opt/
设置环境变量
#不加login登录会有点问题
export KUBECONFIG=/opt/openshift/openshift.local.config/master/admin.kubeconfig
export CURL_CA_BUNDLE=/opt/openshift/openshift.local.config/master/ca.crt
# source /etc/profile
oc login -u system:admin
Logged into "https://10.2.1.102:8443" as "system:admin" using existing credentials.
You have access to the following projects and can switch between them with 'oc project <projectname>':
* default
kube-public
kube-system
openshift
openshift-infra
openshift-node
Using project "default".
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创建Router
# oadm policy add-scc-to-user privileged system:serviceaccount:default:router
# oadm router router --replicas=1 --service-account=router查看Router状态。
# oc get pod -n default
# ss -ltn|egrep -w "80|443"
参考：https://blog.csdn.net/huqigang/article/details/77895490