自定义环境

1.操作环境

角色	主机名	IP地址	组名
控制主机	server.example.com	192.168.90.134	server
受控主机	node1.example.com	192.168.90.135	node1
受控主机	node2.example.com	192.168.90.133	node2

需要保准三台主机能够互相通信。设置同一种网络模式（nat）。

2.配置IP地址

server---192.168.90.134

node1---192.168.90.135

node2---192.168.90.133

3.修改主机名

hostnamectl set-hostname server.exmaple.com

hostnamectl set-hostname node1.example.com

hostnamectl set-hostname node2.example.com

安装ansible

1.查看yun配置

#cd /etc/yum.repos.d
删除多余的（yum配置）源文件
[root@server yum.repos.d]# ll

2.配置centos8基础源

vim  /etc/yum.repos.d/base.repo
[AppStream]
name=AppStream
baseurl=https://mirrors.aliyun.com/centos/8-stream/AppStream/x86_64/os/
gpgcheck=0
[BaseOS]
name=AppStream
baseurl=https://mirrors.aliyun.com/centos/8-stream/BaseOS/x86_64/os/
gpgcheck=0

3.配置epel

#yum install -y https://mirrors.aliyun.com/epel/epel-release-latest-8.noarch.rpm

成功显示：

sed -i 's|^#baseurl=https://download.example/pub|baseurl=https://mirrors.aliyun.com|' /etc/yum.repos.d/epel*
                                         
sed -i 's|^metalink|#metalink|' /etc/yum.repos.d/epel*

yum install ansible -y

4.判断是否安装成功能显示对应版本

 案例一：控制主机和受控主机通过root用户通过免密验证方式远程控住受控主机实施对应任务

1.控住主机--server通过主机名匹配对应连接的受控主机

#vim  /etc/hosts

192.168.90.135 node1 node1.example.com
192.168.90.133 node2 node2.example.com

2.制作秘钥

# ssh-keygen -t rsa -P '' -q -f ~/.ssh/id_rsa

/root/.ssh/id_rsa already exists.
Overwrite (y/n)? y

3.发送密钥

ssh-copy-id -i node1
ssh-copy-id -i node2

4.验证

[root@server ~]# ssh node1
Activate the web console with: systemctl enable --now cockpit.socket

Last login: Fri Dec 30 21:05:46 2022 from 192.168.90.1
[root@node1 ~]# exit
logout
Connection to node1 closed.

[root@server ~]# ssh node2
Activate the web console with: systemctl enable --now cockpit.socket

Last login: Sat Dec 31 05:06:00 2022 from 192.168.90.1
[root@node2 ~]# exit
logout
Connection to node2 closed.

[root@server ~]# ssh node1 hostname
node1.example.com

[root@server ~]# ssh node2 hostname
node2.example.com