环境配置：
1.准备2台服务器，IP地址设置如下：
192.168.146.10 master
192.168.146.20 slave
2.需要Linux装python环境：
https://www.cnblogs.com/kingzhe/p/11124527.html
在做主从时，要保证两个数据库的信息一致
[root@localhost ~]# mysql_secure_installation
[root@localhost ~]# mysql_secure_installation
master端
import configparser
import os
def config_mariadb_yum():
exists = os.path.exists('/etc/yum.repos.d/mariadb.repo')
if exists:
print('mariadb.repo exist')
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 -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()
slave端
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 exist')
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 -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()
传入到pychar中
[root@localhost ~]# python3 1.py
[root@localhost ~]# python3 1.py
mariadb.repo hhh
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000006 | 630 | | |
+------------------+----------+--------------+------------------+
master成功
在运行是遇到的报错
[root@localhost ~]# python 1.py
Traceback (most recent call last):
File "1.py", line 1, in <module>
import configparser
ImportError: No module named configparser #这条报错是没有configparser模块
[root@localhost ~]# pip install configparser #下载模块
Collecting configparser
Downloading https://files.pythonhosted.org/packages/ba/05/6c96328e92e625fc31445d24d75a2c92ef9ba34fc5b037fe69693c362a0d/configparser-3.7.4-py2.py3-none-any.whl
Installing collected packages: configparser
Successfully installed configparser-3.7.4 #下载成功
rz上传slave节点
[root@localhost ~]# python3 2.py
[root@localhost ~]# python3 2.py
master_ip:192.168.146.10
log_file:mysql-bin.000006
pos:530
Redirecting to /bin/systemctl restart mariadb.service
完成架构配置
转载于:https://www.cnblogs.com/sudan5/p/11400289.html
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