准备工作

1. centos7的机器一台,本地安装的虚拟机或者其他 云主机
2. centos7机器上已经成功安装ansible
3. ansible的host中配置好分组为test的所有机器
4. golang安装包，版本是golang1.12.1，这个可以自行选择

编写playbook脚本install_golang.yml

---
- hosts: test
 vars:
 url: '
 tasks:
 - name: 下载golang安装包
 get_url:
 url: "{{url}}"
 dest: "/tmp/golang.tar.gz"
 - name: install the golang
 shell: cd /tmp && tar xzf /tmp/golang.tar.gz && mv go /usr/local/
 - name: mkdir gopath
 shell: cd /usr/local/ && mkdir gopath
 - name: set GOROOT environment
 lineinfile: dest=/etc/profile regexp="^export GOROOT=" line="export GOROOT=/usr/local/go"
 - name: set GOPATH environment
 lineinfile: dest=/etc/profile regexp="^export GOPATH=" line="export GOPATH=/usr/local/gopath"
 - name: set PATH environment
 lineinfile: dest=/etc/ profile  regexp="^PATH=\$PATH:\$GOPATH" line="export PATH=$PATH:$GOPATH/bin:$GOROOT/bin"
 - name: source profile
 shell: sou rc e /etc/profile
 

执行脚本

执行命令：ansible-playbook install_golang.yml

执行没有错误说明自动化脚本安装成功

验证安装是否成功

# ansible -m shell -a "go version" test
 localhost  | SUCCESS | rc=0 >>
go version go1.12.1 linux/amd64
 

成功显示golang的版本信息说明成功安装

关于login shell 与 non-login shell

如果验证命令执行出现下面的错误信息，是ansible登录时的 环境变量 问题导致的

# ansible -m shell -a "go version" test
localhost | FAILED | rc=127 >>
/bin/sh: go: command not foundnon-zero return code
 

一般 ssh 用户登录执行的是login shell，会加载/etc/profile和~/.bash_profile；

ansible这类ssh远程执行是non-login shell，不会加载etc/profile和~/.bash_profile,而是回去加载/etc/bashrc和~/.bashrc，所以之前的脚本会出现找不到go命令错误，要让ansible的脚本可以找到go命令，需要在脚本install_golang.yml最后加上下面几行代码

- name: set GOROOT environment
 lineinfile: dest=/etc/bashrc regexp="^export GOROOT=" line="export GOROOT=/usr/local/go"
 - name: set GOPATH environment
 lineinfile: dest=/etc/bashrc regexp="^export GOPATH=" line="export GOPATH=/usr/local/gopath"
 - name: set PATH environment
 lineinfile: dest=/etc/bashrc regexp="^PATH=\$PATH:\$GOPATH" line="export PATH=$PATH:$GOPATH/bin:$GOROOT/bin"
 - name: source /etc/bashrc
 shell: source /etc/profile
 

如果还有问题可以私信给我，大家一起交流。