Ansible installation and deployment detailed process, basic operation of configuration inventory

准备三台机器：
server.example.com
node1.example.com
node2.example.com

The first is cloning3台机器,最好是配置好yum源的,serverMachines need to haveansible,ssh,The other two are requiredssh和python

 直接克隆就可以
配置IP,主机名,/etc/hosts

Manually configure the three machines separatelyip,使其设置为method

nmcli connection add ipv4.addresses 192.168.38.128 ipv4.gateway 192.168.38.2 ipv4.dns 8.8.8.8 ipv4.method 
nmcli connection add ipv4.addresses 192.168.38.130 ipv4.gateway 192.168.38.2 ipv4.dns 8.8.8.8 ipv4.method 
nmcli connection add ipv4.addresses 192.168.38.132 ipv4.gateway 192.168.38.2 ipv4.dns 8.8.8.8 ipv4.method 

Set the hostname for each of the three machines

hostnamectl set-hostname server.example.com
hostnamectl set-hostname node1.example.com
hostnamectl set-hostname node2.example.com

配置主机名和IP地址的映射关系

Enter the following codes on each of the three machines

[[email protected] ~]# echo "192.168.38.128 server.example.com" >> /etc/hosts
[[email protected] ~]# echo "192.168.38.130 node2.example.com" >> /etc/hosts
[[email protected] ~]# echo "192.168.38.132 node1.example.com" >> /etc/hosts

Then go to configure password-free login

Password-free login is allowedserverThis machine can log in to other machines without password

First generate the key

[[email protected] ~]# ssh-keygen -t rsa

Then pass the public key to the remaining two machines

ssh-copy-id [email protected]

ssh-copy-id [email protected]

At this point, you can log in without a password,测试如下

[[email protected] ~]# ssh [email protected]
Activate the web console with: systemctl enable --now cockpit.socket

This system is not registered to Red Hat Insights. See https://cloud.redhat.com/
To register this system, run: insights-client --register

Last login: Tue Aug  2 16:41:14 2022 from 192.168.38.128
[[email protected] ~]# 
[[email protected] ~]# ssh [email protected]
Activate the web console with: systemctl enable --now cockpit.socket

This system is not registered to Red Hat Insights. See https://cloud.redhat.com/
To register this system, run: insights-client --register

Last login: Tue Aug  2 16:41:14 2022 from 192.168.38.128
[[email protected] ~]# 

配置yum源使用Centos-stream.repo

我们需要将Centos-stream.repo下载到/etc/yum.repos.d/上

首先将原有的Centos-vault-8.5.2111.repoAdding a suffix will not take effect at this time

mv Centos-vault-8.5.2111.repo Centos-vault-8.5.2111.repo.bak

然后将windows上的传入linux

C:\Users\Chen Zhixing>sftp [email protected]
[email protected]'s password:
Connected to 192.168.38.128.
sftp> put D:\CentOS-Stream.repo /etc/yum.repos.d/
Uploading D:/CentOS-Stream.repo to /etc/yum.repos.d/CentOS-Stream.repo
D:/CentOS-Stream.repo                                                                 100% 1215     1.2MB/s   00:00
sftp>

安装ansible

第一步安装 https://mirrors.tuna.tsinghua.edu.cn/zabbix/zabbix/6.0/rhel/8/x86_64/zabbix-release-6.0-1.el8.noarch.rpm

rpm -ivh https://mirrors.tuna.tsinghua.edu.cn/zabbix/zabbix/6.0/rhel/8/x86_64/zabbix-release-6.0-1.el8.noarch.rpm

第二步安装

https://mirrors.tuna.tsinghua.edu.cn/epel/epel-release-latest-8.noarch.rpm

yum install https://mirrors.tuna.tsinghua.edu.cn/epel/epel-release-latest-8.noarch.rpm

最后一步就是安装ansible

yum install ansible -y

使用ansible --version去验证

配置清单：

[node]
node1.example.com
node2.example.com
使用ansible node -m ping去验证

vim /etc/ansible/hosts

It is now complete to verify