mirror of https://github.com/easzlab/kubeasz.git
71 lines
2.7 KiB
Markdown
71 lines
2.7 KiB
Markdown
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## 快速指南
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### 1.准备一台虚机(推荐内存3G，硬盘20G以上)，最小化安装最新 CentOS7，配置基础网络、更新源、SSH登陆等。
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+ 关闭selinux: `echo SELINUX=disabled > /etc/selinux/config`
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### 2.安装python2/git/python-pip/ansible
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``` bash
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# 文档中脚本默认均以root用户执行
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# 安装 epel 源并更新
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yum install epel-release -y
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yum update
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# 删除不要的默认安装
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yum erase firewalld firewalld-filesystem python-firewall -y
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# 安装依赖工具
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yum install git python python-pip -y
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# 安装ansible (国内如果安装太慢可以直接用pip阿里云加速)
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#pip install pip --upgrade
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#pip install ansible
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pip install pip --upgrade -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
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pip install --no-cache-dir ansible -i http://mirrors.aliyun.com/pypi/simple/ --trusted-host mirrors.aliyun.com
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# 配置ansible ssh密钥登陆
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ssh-keygen -t rsa -b 2048 回车 回车 回车
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ssh-copy-id $IP #$IP为本虚机地址，按照提示输入yes 和root密码
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```
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### 3.安装kubernetes集群
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``` bash
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git clone https://github.com/gjmzj/kubeasz.git
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mv kubeasz /etc/ansible
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# 下载已打包好的binaries，并且解压缩到/etc/ansible/bin目录
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# 国内请从我分享的百度云链接下载 https://pan.baidu.com/s/1eSetFSA
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# 如果你有合适网络环境也可以按照/down/download.sh自行从官网下载各种tar包到 ./down目录，并执行download.sh
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tar zxvf k8s.184.tar.gz
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mv bin/* /etc/ansible/bin
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# 配置ansible的hosts文件
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cd /etc/ansible
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cp example/hosts.allinone.example hosts
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然后根据实际情况修改此hosts文件，所有节点都是本虚机IP
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# 采用一步安装或者分步安装
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ansible-playbook 90.setup.yml # 一步安装
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#ansible-playbook 01.prepare.yml
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#ansible-playbook 02.etcd.yml
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#ansible-playbook 03.kubectl.yml
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#ansible-playbook 04.docker.yml
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#ansible-playbook 05.calico.yml
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#ansible-playbook 06.kube-master.yml
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#ansible-playbook 07.kube-node.yml
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```
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如果执行成功，k8s集群就安装好了。
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### 4.验证安装
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``` bash
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# 如果提示kubectl: command not found，退出重新ssh登陆一下，环境变量生效即可
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kubectl version
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kubectl get componentstatus # 可以看到scheduler/controller-manager/etcd等组件 Healthy
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kubectl cluster-info # 可以看到kubernetes master(apiserver)组件 running
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kubectl get node # 可以看到单 node Ready状态
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kubectl get pod --all-namespaces # 可以查看所有集群pod状态
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kubectl get svc --all-namespaces # 可以查看所有集群服务状态
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calicoctl node status # 可以在master或者node节点上查看calico网络状态
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```
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### 5.安装主要组件
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``` bash
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# 安装kubedns
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kubectl create -f manifests/kubedns
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# 安装heapster
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kubectl create -f manifests/heapster
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# 安装dashboard
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kubectl create -f manifests/dashboard
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```
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