Ansible安装与配置

准备三台机器：
server.example.com
node1.example.com
node2.example.com
配置IP，主机名，/etc/hosts

主机server.example.com
[[email protected] ~]# hostnamectl set-hostname server.example.com
[[email protected] ~]# vim /etc/hosts
	添加：
        192.168.255.128 server.example.com
        192.168.255.129 node1.example.com
        192.168.255.130 node2.example.com

主机node1.example.com
[[email protected] ~]# hostnamectl set-hostname node1.example.com
[[email protected] ~]# vim /etc/hosts
	添加：
		192.168.255.129 node1.example.com
主机node2.example.com
[[email protected] ~]# hostnamectl set-hostname node2.example.com
[[email protected] ~]# vim /etc/hosts
	添加：
		192.168.255.130 node2.example.com

配置免密登录

[[email protected] ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:4L478U+nKiIdniujLwyZx/uwzc53BI/LfkmiS4P6ydU [email protected]
The key's randomart image is:
[[email protected] ~]# cd ~/.ssh/
[[email protected] .ssh]# ssh-copy-id [email protected]

配置yum源使用Centos-stream.repo

将Centos-stream.repo文件上传到/etc/yum.repos.d/

安装ansible

yum install ansible -y

使用ansible --version去验证

[[email protected] yum.repos.d]# ansible --version

配置清单：/etc/ansible/hosts
[node]
node1.example.com
node2.example.com
使用ansible node -m ping去验证

[[email protected] .ssh]# ansible node1.example.com -m ping
[DEPRECATION WARNING]: Ansible will require Python 3.8 or newer on the controller 
starting with Ansible 2.12. Current version: 3.6.8 (default, Sep  9 2021, 07:49:02) 
[GCC 8.5.0 20210514 (Red Hat 8.5.0-3)]. This feature will be removed from ansible-
core in version 2.12. Deprecation warnings can be disabled by setting 
deprecation_warnings=False in ansible.cfg.
/usr/local/lib/python3.6/site-packages/ansible/parsing/vault/__init__.py:44: CryptographyDeprecationWarning: Python 3.6 is no longer supported by the Python core team. Therefore, support for it is deprecated in cryptography and will be removed in a future release.
  from cryptography.exceptions import InvalidSignature
node1.example.com | SUCCESS => {
    "ansible_facts": {
        "discovered_interpreter_python": "/usr/libexec/platform-python"
    },
    "changed": false,
    "ping": "pong"
}