Kubernetes 1.3 从入门到进阶 安装篇(1)
2016-07-27 07:23
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Kubernetes 1.3 从入门到进阶 安装篇:minikube
Kubernetes单机运行环境一直是一个没有得到重视的问题。现在我们有了minikube,一个用go语言开发的可以在本地运行kubernetes的利器,不过目前应该只是支持kubernetes1.3。如果你只有一台机器或者虚拟机又想试验一下Kubernetes的新的功能,或者作kubernetes上开发的本地环境,minikube可能是你不错的选择。下载minikube并设定
下载的时候突然发现版本已经是0.7.0了,发现是6个小时之前刚刚更新的,速度好快,从第一次发布的5/31的0.1版,到现在的第七次版本的迭代,基本上平均是一周一个版本的速度,这就是互联网时代的平均数度。当普通的企业推出新机能的时候,一般是在和用户的耐心在赛跑。但是一周一次的版本更新基本上是在脱着用户前进的节奏。下载来看看吧。# curl -Lo minikube https://storage.googleapis.com/minikube/releases/v0.7.0/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 72.0M 100 72.0M 0 0 866k 0 0:01:25 0:01:25 --:--:-- 889k [root@liumiao tmp]#
确认minikube
# which minikube /usr/local/bin/minikube # minikube version There is a newer version of minikube available (v0.7.0). Download it here: https://github.com/kubernetes/minikube/releases/tag/v0.7.0 To disable this notification, add WantUpdateNotification: False to the json config file at /root/.minikube/config (you may have to create the file config.json in this folder if you have no previous configuration) minikube version: v0.6.0 #
简单解释
curl -Lo 会把minikube下载到本地
chmod +x 给其加上执行权限
mv kubectl /usr/local/bin下是因为普通用户的path中缺省的有/usr/local/bin
minikube version: v0.6.0 ?这是个什么节奏,我只是想看个版本号。
按照提示,创建了其提示的目录,明确提示是0.6.0的版本。
# mkdir -p /root/.minikube/config # minikube version minikube version: v0.6.0 #
找到一台能够连接google机器,一样做了一遍,版本正常显示。0.6也好0.7也罢,继续前进。
# minikube version minikube version: v0.7.0 #
下载kubectl并设定
我们还需要下载kubectl并设定# curl -Lo kubectl http://storage.googleapis.com/kubernetes-release/release/v1.3.0/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/ % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 53.8M 100 53.8M 0 0 688k 0 0:01:20 0:01:20 --:--:-- 874k #
确认kubectl
# which kubectl /usr/local/bin/kubectl # kubectl version Client Version: version.Info{Major:"1", Minor:"3", GitVersion:"v1.3.0", GitCommit:"283137936a498aed572ee22af6774b6fb6e9fd94", GitTreeState:"clean", BuildDate:"2016-07-01T19:26:38Z", GoVersion:"go1.6.2", Compiler:"gc", Platform:"linux/amd64"} The connection to the server localhost:8080 was refused - did you specify the right host or port? #
我们已经看到了新的版本信息了,Client Version: version.Info{Major:”1”, Minor:”3”, GitVersion:”v1.3.0”, Marjor的版本号1,Minor的3,1.3.0的kubernetes。但是为什么被8080refused了呢。别着急,还没有启动呢,这是没有成功连接kubernetes apiserver的节奏,一切正常,到目前为止,我们只是下载了一个可执行文件设置了权限而已。
安装条件
google官方是这样写的,Minikube requires the latest Virtualbox to be installed on your system,那么我们看看不安装会怎样。# minikube start Starting local Kubernetes cluster... E0726 05:33:07.585166 4210 start.go:78] Error starting host: Error creating. Error with pre-create check: "VBoxManage not found. Make sure VirtualBox is installed and VBoxManage is in the path" #
好的,我们会好好安装的。有Virtualbox的可以跳过此步,minikube start不出错,就可以使用了。
CentOS上安装VB5.10。 # cd /etc/yum.repos.d/ # wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo # yum update # yum install binutils qt gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms # export KERN_DIR=/usr/src/kernels/3.10.0-327.22.2.el7.x86_64 注意此处根据具体情况3.10.0-327.22.2.el7.x86_64可能有所变化 # yum install VirtualBox-5.1 log的确认:/var/log/vbox-install.log
BIOS或者虚拟机设定:VT-X/AMD-v
# minikube start Starting local Kubernetes cluster... E0727 06:27:17.242507 66718 start.go:78] Error starting host: Error creating. Error with pre-create check: "This computer doesn't have VT-X/AMD-v enabled. Enabling it in the BIOS is mandatory" #
vmware的设定方法:VM => “Settings…” => Processors => 选中复选框Virtualize Intel VT-x/EPT or AMD-V/RVI
注意:只能在VM停下来的时候才能设定
BIOS的设定请根据机器型号自行google
启动:VirtualBox版本提示错误
# minikube start Starting local Kubernetes cluster... E0727 06:41:54.512097 3933 start.go:78] Error starting host: Error creating. Error with pre-create check: "We support Virtualbox starting with version 5. Your VirtualBox install is \"WARNING: The vboxdrv kernel module is not loaded. Either there is no module\\n available for the current kernel (3.10.0-327.22.2.el7.x86_64) or it failed to\\n load. Please recompile the kernel module and install it by\\n\\n sudo /sbin/vboxconfig\\n\\n You will not be able to start VMs until this problem is fixed.\\n5.1.2r108956\". Please upgrade at https://www.virtualbox.org" #
被提示The vboxdrv kernel module is not loaded, 启动一下Virtualbox的Service吧
# /usr/lib/virtualbox/vboxdrv.sh setup vboxdrv.sh: Starting VirtualBox services.
启动:成功
# minikube start Starting local Kubernetes cluster... Kubernetes is available at https://192.168.99.100:8443. Kubectl is now configured to use the cluster. #
总结
看起来很美好,目前用起来不是太方便。没有防火墙和内网限制的可以自由的使用非常方便。安装脚本
#!/bin/bash MINI_VERSION="0.8.0" KUBE_VERSION="1.3.0" MACHINE_VERSION="0.8.1" curl -L https://github.com/docker/machine/releases/download/v${MACHINE_VERSION}/docker-machine-`uname -s`-`uname -m` >/usr/local/bin/docker-machine && \ chmod +x /usr/local/bin/docker-machine which docker-machine docker-machine version curl -Lo minikube https://storage.googleapis.com/minikube/releases/v${MINI_VERSION}/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ which minikube minikube version curl -Lo kubectl http://storage.googleapis.com/kubernetes-release/release/v${KUBE_VERSION}/bin/linux/amd64/kubectl && chmod +x kubectl && sudo mv kubectl /usr/local/bin/ kubectl version cd /etc/yum.repos.d/ wget http://download.virtualbox.org/virtualbox/rpm/rhel/virtualbox.repo yum update -y yum install -y binutils qt gcc make patch libgomp glibc-headers glibc-devel kernel-headers kernel-devel dkms DIR=`ls -lrt /usr/src/kernels/|tail -n1 |awk '{print $NF}'` export KERN_DIR="/usr/src/kernels/${DIR}" yum install VirtualBox-5.1 /usr/lib/virtualbox/vboxdrv.sh setup minikube start
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