ansible 的安装部署

Ansible是一个简单高效的自动化运维管理工具，用Python开发（安装时依赖Python版本，控制主机master器要求Python2.6以上，被控制的主机server需要Python2.6以上。centos6.8自带Python2.6），能大批量管理N多台机器，可以并发的在多台机器上部署应用、安装软件、执行命令、配置和编排任务。

安装ansible之前要检查控制机的Python版本：
Python -V 即可显示版本
因为控制机是Python2.6，也可以安装Python2.7。（详见Python2.7.13的安装）

Python版本合格之后开始安装ansible

一、安装ansible
1台控制主机（master）：192.168.1.88

3台被控制主机（server）：
192.168.1.18
192.168.1.98
192.168.1.185

控住主机：

yum install epel-release
yum install ansible

二、配置

vim /etc/ansible/hosts

在最后面加上被控制主机的IP：

## [dbservers]
##
## db01.intranet.mydomain.net
## db02.intranet.mydomain.net
## 10.25.1.56
## 10.25.1.57

# Here's another example of host ranges, this time there are no
# leading 0s:

## db-[99:101]-node.example.com     //此行为原文件的最后一行
192.168.1.98
192.168.1.18
192.168.1.185

vim /etc/ansible/ansible.cfg
[accelerate]
#accelerate_port = 5099
accelerate_port = 10000 
#accelerate_timeout = 30
#accelerate_connect_timeout = 5.0

# If set to yes, accelerate_multi_key will allow multiple
# private keys to be uploaded to it, though each user must
# have access to the system via SSH to add a new key. The default
# is "no".
accelerate_multi_key = yes

三、实现控制主机和被控制主机之间的无密码认证

同样是控制主机：

ssh-keygen

一路回车，即可在/root/.ssh目录下生成id_rsa和id_rsa.put私钥和公钥两个文件。

然后将钥匙给到被控制的主机：

ssh-copy-id 192.168.1.18
ssh-copy-id 192.168.1.98
ssh-copy-id 192.168.1.185

至此，安装配置已经完成，测试是否成功

四、测试：
在控制主机上执行命令，看被控制主机的反应：

[root@localhost ~]# ansible all -m ping
192.168.1.98 | SUCCESS => {
    "changed": false,
    "failed": false,
    "ping": "pong"
}
192.168.1.185 | SUCCESS => {
    "changed": false,
    "failed": false,
    "ping": "pong"
}
192.168.1.18 | SUCCESS => {
    "changed": false,
    "failed": false,
    "ping": "pong"
}

被控制主机有响应，说明安装配置成功。

注意可能会有下面的警告，没有报错即可运行。

[DEPRECATION WARNING]: ACCELERATE_MULTI_KEY option, Removing accelerate as a
connection method, settings not needed either. . This feature will be removed in
 version 2.5. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.
[DEPRECATION WARNING]: ACCELERATE_PORT option, Removing accelerate as a
connection method, settings not needed either. . This feature will be removed in
 version 2.5. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.

五、实例

[root@localhost ~]# ansible 192.168.1.98  -a "touch /mnt/file3"
[DEPRECATION WARNING]: ACCELERATE_TIMEOUT option, Removing accelerate as a
connection method, settings not needed either. . This feature will be removed
in version 2.5. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.
[DEPRECATION WARNING]: ACCELERATE_MULTI_KEY option, Removing accelerate as a
connection method, settings not needed either. . This feature will be removed
in version 2.5. Deprecation warnings can be disabled by setting
deprecation_warnings=False in ansible.cfg.
 [WARNING]: Consider using file module with state=touch rather than running
touch

192.168.1.98 | SUCCESS | rc=0 >>

注意参数 -a 后面用双引号或者单引号“”将命令引起来,即

ansible 192.168.1.98  -a "command"