python部署mariadb主从架构

主机部署：

import configparser
import os

def config_mariadb_yum():
exists = os.path.exists('/etc/yum.repos.d/mariadb.repo')
if exists:
print('mariadb.repo文件已经存在')
yum_install_mariadb()
else:
config = configparser.ConfigParser()
config.read('/etc/yum.repos.d/mariadb.repo', encoding='utf-8')
config.add_section('mariadb')
config.set('mariadb', 'name', 'MariaDB')
config.set('mariadb', 'baseurl', 'http://mirrors.ustc.edu.cn/mariadb/yum/10.3/centos7-amd64/')
config.set('mariadb', 'gpgkey', 'http://mirrors.ustc.edu.cn/mariadb/yum/RPM-GPG-KEY-MariaDB')
config.set('mariadb', 'gpgcheck', '1')
config.write(open("/etc/yum.repos.d/mariadb.repo", "w"))
yum_install_mariadb()

def yum_install_mariadb():
res1 = os.system('yum install MariaDB -y > /dev/null 2&>1')
if res1 == 0:
config = configparser.ConfigParser()
config.read('/etc/my.cnf.d/server.cnf', encoding='utf-8')
config.set('server','server_id','1')
config.set('server','log-bin','mysql-bin')
config.write(open("/etc/my.cnf.d/server.cnf", "w"))
res2 = os.system('service mariadb restart')
if res2 == 0:
os.system('mysql_secure_installation')
os.system('''mysql -uroot -proot -e "grant replication slave on *.* to 'slave'@'%' identified by 'slave'"''')
os.system("mysql -uroot -proot -e 'show master status'")

def main():
config_mariadb_yum()
if __name__ == '__main__':
main()

从机部署：

import configparser
import os
master_ip = input('master_ip:').strip()
log_file = input('log_file:').strip()
pos = input('pos:').strip()
def config_mariadb_yum():
exists = os.path.exists('/etc/yum.repos.d/mariadb.repo')
if exists:
print('mariadb.repo文件已经存在')
yum_install_mariadb()
else:
config = configparser.ConfigParser()
config.read('/etc/yum.repos.d/mariadb.repo', encoding='utf-8')
config.add_section('mariadb')
config.set('mariadb', 'name', 'MariaDB')
config.set('mariadb', 'baseurl', 'http://mirrors.ustc.edu.cn/mariadb/yum/10.3/centos7-amd64/')
config.set('mariadb', 'gpgkey', 'http://mirrors.ustc.edu.cn/mariadb/yum/RPM-GPG-KEY-MariaDB')
config.set('mariadb', 'gpgcheck', '1')
config.write(open("/etc/yum.repos.d/mariadb.repo", "w"))
yum_install_mariadb()

def yum_install_mariadb():
res1 = os.system('yum install MariaDB -y > /dev/null 2&>1')
if res1 == 0:
config = configparser.ConfigParser()
config.read('/etc/my.cnf.d/server.cnf', encoding='utf-8')
config.set('server','server_id','2')
config.write(open("/etc/my.cnf.d/server.cnf", "w"))
res2 = os.system('service mariadb restart')
if res2 == 0:
os.system('mysql_secure_installation')
os.system('''mysql -uroot -proot -e "CHANGE MASTER TO MASTER_HOST='%s', MASTER_USER='slave', MASTER_PASSWORD='slave', MASTER_LOG_FILE='%s', MASTER_LOG_POS=%s"''' % (master_ip,log_file,pos))
os.system("mysql -uroot -proot -e 'start slave;'")


def main():
config_mariadb_yum()
if __name__ == '__main__':
main()