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本文介绍在Linux系统上运行Openshift OKD环境的最简单方法，使用Minishift运行本地Openshift集群的方法。
Minishift简介 Minishift是一个开源工具，可帮助你在VM内部本地运行单节点OpenShift集群，可以在本地主机上试用OpenShift或与它一起开发。 Minishift需要管理程序来启动配置OpenShift集群的虚拟机，我们将在Minishift设置之前安装你选择的虚拟机管理程序。
一、安装Hypervisor参考文章 对于Linux用户，常见的管理程序选择是KVM和VirtualBox，参考： 在Ubuntu 18.04/Debian 9上安装VirtualBox 6.0的方法 在Fedora 29/Fedora 28中安装Vagrant和Virtualbox 在CentOS 7/Ubuntu 16.04/Debian 9/SLES 12上安装KVM的方法
二、设置Minishift管理程序驱动程序 Minishift嵌入了VirtualBox驱动程序插件，因此无需其他步骤即可配置它，但是，KVM用户需要手动安装驱动程序插件。以下安装KVM驱动程序（适用于KVM用户）。 1、对于Fedora/CentOS： sudo usermod -a -G libvirt $(whoami) newgrp libvirt || newgrp libvirtd curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-ubuntu16.04 -o docker-machine-driver-kvm sudo mv docker-machine-driver-kvm /usr/local/bin/docker-machine-driver-kvm sudo chmod +x /usr/local/bin/docker-machine-driver-kvm 2、对于Ubuntu/Debian： sudo usermod -a -G libvirtd $(whoami) newgrp libvirt curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 -o docker-machine-driver-kvm sudo mv docker-machine-driver-kvm /usr/local/bin/docker-machine-driver-kvm sudo chmod +x /usr/local/bin/docker-machine-driver-kvm 3、对于Arch Linux/Manjaro： sudo usermod -a -G kvm,libvirt $(whoami) sudo sed -ri 's/.?group\s?=\s?".+"/group = "kvm"/1' /etc/libvirt/qemu.conf newgrp libvirt curl -L https://github.com/dhiltgen/docker-machine-kvm/releases/download/v0.10.0/docker-machine-driver-kvm-centos7 -o docker-machine-driver-kvm sudo mv docker-machine-driver-kvm /usr/local/bin/docker-machine-driver-kvm chmod +x /usr/local/bin/docker-machine-driver-kvm 然后启动默认KVM网络： sudo virsh net-start default sudo virsh net-autostart default
三、安装Minishift 我们要安装的版本是Minishift 1.33.0，下载： curl -L https://github.com/minishift/minishift/releases/download/v1.33.0/minishift-1.33.0-linux-amd64.tgz -o minishift-1.33.0-linux-amd64.tgz tar xvf minishift-1.33.0-linux-amd64.tgz 将minishift二进制文件添加到$PATH环境变量中： sudo mv minishift-1.33.0-linux-amd64/minishift /usr/local/bin 确认安装成果，运行minishift version命令查看安装的版本： $ minishift version minishift v1.33.0+ba29431
四、开始Minishift 我们安装了所有必需的依赖项，并且我们准备使用Minishift启动单个节点的Openshift集群，请注意，此群集针对开发工作流程进行了优化。 以下步骤介绍了如何在具有KVM管理程序驱动程序的Linux操作系统上开始使用Minishift。 1.运行minishift start命令： $ minishift start
这将进行一些检查，然后配置Minishift VM：内存4GB、vCPU是2、磁盘大小20GB。 输出如下信息： Starting Minishift VM .................. OK Checking for IP address ... OK Checking for nameservers ... OK Checking if external host is reachable from the Minishift VM ... Pinging 8.8.8.8 ... OK Checking HTTP connectivity from the VM ... Retrieving http://minishift.io/index.html ... OK Checking if persistent storage volume is mounted ... OK Checking available disk space ... 1% used OK Writing current configuration for static assignment of IP address ... WARN Importing 'openshift/origin-control-plane:v3.11.0' CACHE MISS Importing 'openshift/origin-docker-registry:v3.11.0' CACHE MISS Importing 'openshift/origin-haproxy-router:v3.11.0' CACHE MISS OpenShift cluster will be configured with ... Version: v3.11.0 Pulling the OpenShift Container Image .................. OK Copying oc binary from the OpenShift container image to VM ... OK Starting OpenShift cluster .................. Getting a Docker client ... Checking if image openshift/origin-control-plane:v3.11.0 is available ... Pulling image openshift/origin-cli:v3.11.0 .................. Login to server ... Creating initial project "myproject" ... Server Information ... OpenShift server started. The server is accessible via web console at: https://192.168.42.106:8443/console You are logged in as: User: developer Password: <any value> To login as administrator: oc login -u system:admin Exporting of OpenShift images is occuring in background process with pid 11207. 如果正在运行VirtualBox，请在启动Minishift VM时使用--vm-driver virtualbox选项： $ minishift start --vm-driver virtualbox 对于持久性配置，以便每次运行minishift start而不显式传递–vm-driver virtualbox选项，运行以下命令： $ minishift config set vm-driver virtualbox 为每个OpenShift集群动态生成IP，要检查IP，请运行minishift ip命令。 2.访问Openshift 可以从Web控制台或CLI访问新部署的Openshift群集，要从Web控制台进行访问，请使用群集启动后显示的URL。 可以通过Web控制台访问服务器：https://192.168.42.106:8443/console 可以在启动Minishift后在shell中运行此命令以获取Web控制台的URL： $ minishift console --url https://192.168.42.106:8443/console 或者，在启动Minishift之后，可以使用以下命令在浏览器中直接打开控制台： $ minishift console Opening the OpenShift Web console in the default browser… [16398:16398:0416/224729.206639:ERROR:sandbox_linux.cc(364)] InitializeSandbox() called with multiple threads in process gpu-process. [16359:16381:0416/224729.313961:ERROR:browser_process_sub_thread.cc(209)] Waited 5 ms for network service Opening in existing browser session.
要以管理员身份登录，帐户信息为用户名是system，密码是admin：
要从CLI操作Openshift，请继续执行下面步骤。
五、安装OpenShift客户端二进制文件（oc） minishift start命令创建一个OpenShift集群并将ocbinary复制到你的主机上，该二进制文件位于~/.minishift/cache/oc/v(VER)目录中，我们需要将其复制到/usr/local/bin以供所有用户访问它： sudo cp ~/.minishift/cache/oc/v3.11.0/linux/oc /usr/local/bin 或者可以使用minishift oc-env将此二进制文件添加到PATH，它会显示你需要在shell中输入的命令： $ minishift oc-env export PATH="/home/jmutai/.minishift/cache/oc/v3.11.0/linux:$PATH" # Run this command to configure your shell: # eval $(minishift oc-env) 使用oc version命令检查它是否正常工作： $ oc version oc v3.11.0+0cbc58b kubernetes v1.11.0+d4cacc0 features: Basic-Auth GSSAPI Kerberos SPNEGO Server https://192.168.42.106:8443 kubernetes v1.11.0+d4cacc0 这告诉你服务器的IP地址和端口，要以管理员身份登录，请使用系统帐户： $ oc login -u system:admin Logged into "https://192.168.42.106:8443" as "system:admin" using existing credentials. You have access to the following projects and can switch between them with 'oc project ': default kube-dns kube-proxy kube-public kube-system myproject openshift openshift-apiserver openshift-controller-manager openshift-core-operators openshift-infra openshift-node openshift-service-cert-signer openshift-web-console Using project "myproject". 用于访问的客户端证书存储在~/.kube/config中。 要查看可用的登录，请运行以下命令： $ oc config view apiVersion: v1 clusters: cluster: certificate-authority-data: REDACTED server: https://192.168.42.106:8443 name: 192-168-42-106:8443 contexts: context: cluster: 192-168-42-106:8443 namespace: myproject user: developer/192-168-42-106:8443 name: minishift context: cluster: 192-168-42-106:8443 namespace: myproject user: developer/192-168-42-106:8443 name: myproject/192-168-42-106:8443/developer context: cluster: 192-168-42-106:8443 namespace: myproject user: system:admin/192-168-42-106:8443 name: myproject/192-168-42-106:8443/system:admin current-context: myproject/192-168-42-106:8443/system:admin kind: Config preferences: {} users: name: developer/192-168-42-106:8443 user: token: QdSKNK5DbaLA2AOFM__8-_fJ-Pt7BikZP1uFwsqyNx0 name: system:admin/192-168-42-106:8443 user: client-certificate-data: REDACTED client-key-data: REDACTED 附：阻止Minishift的方法 要停止Openshift集群和Minishift VM，请运行： $ minishift stop Stopping the OpenShift cluster… Cluster stopped. 你可以随时通过运行重新启动OpenShift集群： $ minishift start
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