ansible学习，

ansible学习，

一、ansible安装

#只需要管理端安装

yum install epel-release

yum install ansible

二、配置

vim /etc//ansible/hosts    #添加远程被管理端主机

192.168.10.148

k8s-master

k8s-node-2

三、 生成公钥放到被管理端

ssh-keygen -t rsa

ssh-copy-id -i ~/.ssh/id_rsa.pub root@192.168.10.148

ssh-copy-id -i ~/.ssh/id_rsa.pub root@k8s-master

ssh-copy-id -i ~/.ssh/id_rsa.pub root@k8s-node-2

管理端测试: ansible all -m ping

ansible all -m ping -u alex    #以alex用户执行

ansible all -m ping -u alex --sudo --sudo-user batman    #sudo方式运行

四、命令

#开启两个进程并行执行，关闭atlanta组的所有主机

ansible atlanta -a "/sbin/reboot" -f 2

#拷贝文件到atlanta组的主机

ansible atlanta -m copy -a "src=/etc/hosts dest=/tmp/hosts"

#修改为文件权限

ansible atlanta -m file -a "/tmp/hosts mode=777"

#创建目录

ansible atlanta -m file -a "dest=/tmp/c mode=755 owner=nginx group=nginx state=directory"

#删除目录

ansible atlanta -m file -a "dest=/tmp/c state=absent"

#确认软件包是否安装，但不去升级

ansible atlanta -m yum -a "name=nginx state=present"

#确认一个软件包没有安装

ansible atlanta -m yum -a "name=nginx state=absent"

#使用 ‘user’ 模块可以方便的创建账户,删除账户,或是管理现有的账户:

ansible all -m user -a "name=foo password=<crypted password here>"

ansible all -m user -a "name=foo state=absent"

#启动服务

ansible atlanta -m service -a "name=docker state=started"

#重启服务

ansible atlanta -m service -a "name=docker state=restarted"

#停止服务

ansible atlanta -m service -a "name=docker state=stopped"

#需要长时间运行的命令可以放到后台去,在命令开始运行后我们也可以检查运行的状态.如果运行命令后,不想获取返回的信息, 可执行如下命令:

ansible all -B 3600 -P 0 -a "/usr/bin/long_running_operation --do-stuff"

#如果你确定要在命令运行后检查运行的状态,可以使用 async_status 模块.前面执行后台命令后会返回一个 job id, 将这个 id 传给 async_status 模块:

ansible web1.example.com -m async_status -a "jid=488359678239.2844"

#获取状态的命令如下:

ansible all -B 1800 -P 60 -a "/usr/bin/long_running_operation --do-stuff"

其中 -B 1800 表示最多运行30分钟, -P 60 表示每隔60秒获取一次状态信息.

五、http安装配置文件修改例子

vim /etc/ansible/hosts #添加主机组

[testhost]

192.168.10.148

192.168.10.224

编写yaml文件

vim http.yml    #修改httpd.conf文件时，notify会通知客户端重启httpd

- hosts: testhost

  vars:

    src_http_dir: "/etc/httpd"

    dest_http_dir: "/tmp"

  remote_user: root

  tasks:

  - name: instal httpd service

    yum: name=httpd state=present

  - name: copy httpd conf

    copy: src="`src_http_dir`/conf/httpd.conf" dest=/etc/httpd/conf/httpd.conf

    notify:

      - restart httpd service

  - name: start httpd service

    service: name=httpd state=started enabled=true

  handlers:

    - name: restart httpd service

      service: name=httpd state=restarted

变量使用

vim test1.yml

- hosts: testhost

  vars:

    src_http_dir: "/etc/httpd"

    dest_http_dir: "/tmp"

  remote_user: root

  tasks:

  - name: copy httpd conf

    copy: src="`src_http_dir`/conf/httpd.conf" dest="`dest_http_dir`/http.conf.ansible"

模板使用

vim httpd.conf

#修改以下内容

Listen `ansible_all_ipv4_addresses`.`0`:`http_port`

ServerName `ansible_nodename`

vim test2.yml

- hosts: testhost

  vars:

    http_port: 8010

    http_dir: /etc/httpd/conf

  remote_user: root

  tasks:

  - name: copy httpd conf

    template: src=/etc/ansible/httpd.conf dest="`http_dir`/httpd.conf"

    notify:

     - restart httpd service

  handlers:

   - name: restart httpd service

     service: name=httpd state=restarted

     本文转自小白的希望 51CTO博客，原文链接：，http://blog.51cto.com/haoyonghui/1970029如需转载请自行联系原作者