Ansible 安装及多服务部署示例

## 主服务器 ssh 公钥认证创建
ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys


## 公钥传到目标服务器（首次输入密码）
sshpass -p "centos" ssh [email protected] "mkdir ~/.ssh/"
sshpass -p "centos" scp ~/.ssh/id_rsa.pub [email protected]:~/.ssh/
sshpass -p "centos" scp ~/.ssh/authorized_keys [email protected]:~/.ssh/


## 安装
yum install -y ansible
ansible --version


## inventory 主机清单文件
vim /etc/ansible/hosts 

[mysqlservers]
192.168.1.173
192.168.1.174

[allservers]
192.168.1.171
192.168.1.172
192.168.1.173
192.168.1.174


## 验证
ansible all --list-hosts
ansible all -m ping 
ansible mysqlservers -m ping 


## ansible配置文件
vim /etc/ansible/ansible.cfg

[defaults]
sudo_user=root
remote_port=22
remote_user=root
module_name=command
host_key_checking=False
command_warnings = False
inventory=/etc/ansible/hosts
roles_path=/etc/ansible/roles
log_path=/var/log/ansible.log
private_key_file=/root/.ssh/id_rsa


-------------------------------------------------
## 测试一：拷贝文件及执行命令
-------------------------------------------------
echo "systemctl disable firewalld" > /root/test.sh
ansible mysqlservers -m copy -a "src=/root/test.sh dest=/root/"
ansible mysqlservers -m shell -a "chmod 755 /root/test.sh"

-------------------------------------------------
## 测试二：调用 roles 的 playbook 任务执行
-------------------------------------------------
# 创建角色目录 test
mkdir -p /etc/ansible/roles/test/{default,files,handlers,meta,tasks,templates,vars}

# 创建配置文件 mytest.yml，指定主机组 mysqlservers，指定角色目录 test
vim /etc/ansible/roles/test/mytest.yml

- hosts: mysqlservers
  remote_user: root
  roles:
    - test

## 创建任务脚本
vim /etc/ansible/roles/test/tasks/main.yml

- name: copy test.sh to client
  copy: src=/root/test.sh dest=/root/test.sh
- name: chmod for test.sh
  shell: chmod 755 /root/test.sh


## 检查脚本
ansible-playbook -C /etc/ansible/roles/test/mytest.yml

## 执行脚本
ansible-playbook /etc/ansible/roles/test/mytest.yml