系統配置：centos7
mysql5.7
ansible 2.9.1
1、安裝ansible
yum install epel-release-y yum install ansible
2、編寫inventory文件 hosts.ini
[mysql_servers] 192.168.235.145 ansible_ssh_user="root" ansible_ssh_pass="xxxxxxx" mysql_role=master server_id=1
192.168.235.146 ansible_ssh_user="root" ansible_ssh_pass="xxxxxxx" mysql_role=slave server_id=2
192.168.235.147 ansible_ssh_user="root" ansible_ssh_pass="xxxxxxx" mysql_role=slave server_id=3 [mysql_servers:vars] master_ip=192.168.235.145 mysql_version=5.7.28 mysql_root_password=sy#M*tFE(11O mysqld_error_log=/var/log/mysqld.log mysql_repl_user=repl mysql_repl_password=repl
3、編寫tasks任務文件 main.yml
--- - name: stop firewalld shell: systemctl stop firewalld
register: command_result
failed_when: "'FAILED' in command_result.stderr"
- name: disable firewalld shell: systemctl disable firewalld
register: command_result failed_when: "'FAILED' in command_result.stderr"
- name: install repository yum : name: https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm state: present - name: copy global my.cnf template: src: templates/my.cnf.j2 dest: /etc/my.cnf - name: install mysql '{{ mysql_version }}' yum: name: 'mysql-community-server-{{ mysql_version }}' state: present enablerepo: mysql57-community disablerepo: mysql80-community - name: start mysql service: name: mysqld state: started - name: Find temporary password shell: > echo `grep 'temporary.*root@localhost' "{{ mysqld_error_log }}" | sed 's/.*root@localhost: //'` register: mysql_root_password_temp - name: Set new password for mysql root user shell: > mysql -NBe "alter user USER() identified by '{{ mysql_root_password }}';" --connect-expired-password -uroot -p'{{ mysql_root_password_temp.stdout }}' - name: uninstall validate_password plugin shell: > mysql -NBe "uninstall plugin validate_password" -uroot -p'{{ mysql_root_password }}' - name: install MySQL-python yum: name: MySQL-python state: latest - name: create replication user mysql_user: name: "{{ mysql_repl_user }}" host: "%" password: "{{ mysql_repl_password }}" priv: "*.*:REPLICATION SLAVE" state: present login_user: root login_password: "{{ mysql_root_password }}" when: mysql_role == "master" tags: - create-repl-user - name: change master to mysql_replication: mode: changemaster master_host: "{{ master_ip }}" master_user: repl master_password: repl master_auto_position: yes login_user: root login_password: "{{ mysql_root_password }}" when: mysql_role == 'slave' - name: start slave mysql_replication: mode: startslave login_user: root login_password: "{{ mysql_root_password }}" when: mysql_role == "slave"
4、mysql配置文件模板 my.cnf.j2
[mysqld] datadir = /var/lib/mysql socket=/var/lib/mysql/mysql.sock symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid log-bin=/var/lib/mysql/mysql-bin server-id = {{ server_id }} character_set_server='utf8' skip-name-resolve ## InnoDB specific parameters innodb_buffer_pool_size = 2G innodb_file_per_table=ON innodb_flush_log_at_trx_commit=1 innodb_log_file_size=128M innodb_flush_method=O_DIRECT ## Transaction behavior autocommit=ON transaction-isolation=READ-COMMITTED #slow_query log_queries_not_using_indexes=1 long_query_time=1 slow_query_log=1 ## Memory sizes join_buffer_size = 8M sort_buffer_size = 8M read_rnd_buffer_size = 16M tmp_table_size = 128M max_heap_table_size = 128M ## Miscellaneous parameters sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER default_storage_engine=InnoDB # max binlog keeps days expire_logs_days = 7 max_connections=300 log_timestamps=system slave_net_timeout=3600 ## Enables binary logging max_relay_log_size=512M binlog_format=ROW max_binlog_size=512M master_info_repository = table relay_log_info_repository = table sync_binlog=0 gtid_mode=ON log_slave_updates=ON enforce_gtid_consistency=ON plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so" loose_rpl_semi_sync_master_enabled = 1 loose_rpl_semi_sync_slave_enabled = 1 loose_rpl_semi_sync_master_timeout = 5000 ## Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 {% if mysql_role == "slave" %} read_only=ON {% endif %}
執行：
ansible-playbook -i hosts.ini start_deploy.yml
完整代碼鏈接：