Ansible 利用playbook批量部署mariadb

环境说一下

192.168.30.21     ansible

192.168.30.25     client1

192.168.30.26     client2

这里我的ansible环境已经部署好了，所以没有重复写到这里，如果不知道怎么部署ansible的小伙伴可以看我上篇随笔（这里不演示了 ）

1.被管理端都需要配置yum源

配置本地yum仓库就可以

2.配置数据库角色

[root@ansible ~]# mkdir -pv /etc/ansible/roles/mariadb/{files,tasks,handlers}

mkdir: 已创建目录 "/etc/ansible/roles/mariadb"

mkdir: 已创建目录 "/etc/ansible/roles/mariadb/files"

mkdir: 已创建目录 "/etc/ansible/roles/mariadb/tasks"

mkdir: 已创建目录 "/etc/ansible/roles/mariadb/handlers"

[root@ansible ~]# cd /etc/ansible/

[root@ansible ansible]# vim /etc/ansible/mariadb.yml

- hosts: cloud

  remote_user: root

  roles:

    - mariadb

[root@ansible ansible]# cd /etc/ansible/roles/mariadb/

[root@ansible mariadb]# ls

files  handlers  tasks

[root@ansible mariadb]# cd tasks/

[root@ansible tasks]# vim main.yml

- name: install mariadb

  yum: name=mariadb-server state=present

- name: move config file

  shell: "[ -e /etc/my.cnf ] && mv /etc/my.cnf /etc/my.cnf.bak"

- name: provide a new config file

  copy: src=my.cnf dest=/etc/my.cnf

- name: reload mariadb

  shell: systemctl restart mariadb

- name: create database testdb

  shell: mysql -u root -e "create database aaa;grant all privileges on aaa.* to 'cloud'@'192.168.30.%' identified by 'test123';flush privileges;"

  notify:

    - restart mariadb

[root@ansible tasks]# cd ../

[root@ansible mariadb]# ls

files  handlers  tasks

[root@ansible mariadb]# cd handlers/

[root@ansible handlers]# vim main.yml

- name: restart mariadb

  service: name=mariadb state=restarted

[root@ansible handlers]# cd ../files/

[root@ansible files]# cp /etc/my.cnf /etc/ansible/roles/mariadb/files/

[root@ansible files]# ls

my.cnf

[root@ansible files]# cd /etc/ansible/

[root@ansible ansible]# ls

ansible.cfg  hosts  mariadb.yml  nginx.retry  nginx.yaml  roles  zabbix-agent.yml

[root@ansible ansible]# cd

预执行；查看有没有报错

[root@ansible ~]# ansible-playbook -C /etc/ansible/mariadb.yml

[root@ansible ~]# ansible-playbook /etc/ansible/mariadb.yml

PLAY [cloud] **********************************************************************************************

TASK [Gathering Facts] ************************************************************************************

ok: [192.168.30.26]

ok: [192.168.30.25]

TASK [mariadb : install mariadb] **************************************************************************

ok: [192.168.30.25]

ok: [192.168.30.26]

TASK [mariadb : move config file] *************************************************************************

changed: [192.168.30.25]

changed: [192.168.30.26]

TASK [mariadb : provide a new config file] ****************************************************************

changed: [192.168.30.25]

changed: [192.168.30.26]

TASK [mariadb : reload mariadb] ***************************************************************************

changed: [192.168.30.26]

changed: [192.168.30.25]

TASK [mariadb : create database testdb] *******************************************************************

changed: [192.168.30.25]

changed: [192.168.30.26]

RUNNING HANDLER [mariadb : restart mariadb] ***************************************************************

changed: [192.168.30.25]

changed: [192.168.30.26]

PLAY RECAP ************************************************************************************************

192.168.30.25              : ok=7    changed=5    unreachable=0    failed=0   

192.168.30.26              : ok=7    changed=5    unreachable=0    failed=0   

1. ansible端验证

[root@ansible ~]# ansible cloud -m shell -a 'mysql -u root -e "show databases;"'

192.168.30.26 | SUCCESS | rc=0 >>

Database

information_schema

aaa

mysql

performance_schema

192.168.30.25 | SUCCESS | rc=0 >>

Database

information_schema

aaa

mysql

performance_schema

client端验证

[root@client1 ~]# mysql

MariaDB [(none)]> show grants for cloud@'192.168.30.%';

+-----------------------------------------------------------------------------------------------------------------+

| Grants for cloud@192.168.30.%                                                                                   |

+-----------------------------------------------------------------------------------------------------------------+

| GRANT USAGE ON *.* TO 'cloud'@'192.168.30.%' IDENTIFIED BY PASSWORD '*676243218923905CF94CB52A3C9D3EB30CE8E20D' |

| GRANT ALL PRIVILEGES ON `aaa`.* TO 'cloud'@'192.168.30.%'                                                       |

+-----------------------------------------------------------------------------------------------------------------+

2 rows in set (0.00 sec)

修改mariadb的密码（脚本完成之后没有设置密码，这里我是单独设置的密码）

[root@client1 ~]# mysql

MariaDB [(none)]> use mysql;

MariaDB [mysql]> update user set password=password('123456789') where user='root';

MariaDB [mysql]> flush privileges;

MariaDB [mysql]> q

[root@client1 ~]# mysql -u root -p123456789

Welcome to the MariaDB monitor.  Commands end with ; or g.

Your MariaDB connection id is 9

Server version: 5.5.56-MariaDB MariaDB Server

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

MariaDB [(none)]>