MariaDB [(none)]> create user 'jiankongdb'@'%' identified by 'jiankong123'; MariaDB [(none)]> grant SELECT on mysql.user to 'jiankongdb'@'%'; MariaDB [(none)]> GRANT SELECT ON mysql.db TO 'jiankongdb'@'%'; MariaDB [(none)]> GRANT SELECT ON mysql.tables_priv TO 'jiankongdb'@'%'; MariaDB [(none)]> GRANT SHOW DATABASES ON *.* TO 'jiankongdb'@'%'; MariaDB [(none)]> grant REPLICATION CLIENT on *.* to 'jiankongdb'@'%'; MariaDB [(none)]> GRANT replication slave, replication client,SELECT ON *.* TO jiankongdb@'%';
6.查看授权情况
MariaDB [(none)]> SHOW GRANTS FOR'jiankong'@'%';
7.接下来就开始修改maxscale.cnf配置文件，否则无法启动。
[root@localhost ~]# vim /etc/maxscale.cnf # MaxScale documentation on GitHub: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Documentation-Contents.md # Global parameters # # Complete list of configuration options: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Getting-Started/Configuration-Guide.md #全局配置 [maxscale] threads=1 # Server definitions # # Set the address of the server to the network # address of a MySQL server. # [server1] type=server address=172.16.8.56 port=3306 protocol=MySQLBackend serv_weight=1 [server2] type=server address=172.16.8.57 port=3306 protocol=MySQLBackend serv_weight=3 [server3] type=server address=172.16.8.58 port=3306 protocol=MySQLBackend serv_weight=3 # Monitor for the servers # # This will keep MaxScale aware of the state of the servers. # MySQL Monitor documentation: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Monitors/MySQL-Monitor.md #MariaDB状态监控 [MySQL Monitor] type=monitor module=mysqlmon servers=server1,server2,server3 user=jiankong passwd=jiankong123 monitor_interval=10000 detect_stale_master=true #即使从全挂掉,保证主担任读写 # Service definitions # # Service Definition for a read-only service and # a read/write splitting service. # # ReadConnRoute documentation: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Routers/ReadConnRoute.md #读 [Read-Only Service] type=service router=readconnroute servers=server1,server2,server3 user=jiankong passwd=jiankong123 router_options=slave enable_root_user=1 #允许root用户登录执行 weightby=serv_weight #主从权重 # ReadWriteSplit documentation: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Routers/ReadWriteSplit.md #写 [Read-Write Service] type=service router=readwritesplit servers=server1,server2,server3 user=jiankong passwd=jiankong123 max_slave_connections=100% use_sql_variables_in=master #保证会话的一致性 enable_root_user=1 #允许root登录 max_slave_replication_lag=3600 #允许从超出主的同步时间,超出则不路由 # This service enables the use of the MaxAdmin interface # MaxScale administration guide: # https://github.com/mariadb-corporation/MaxScale/blob/2.1/Documentation/Reference/MaxAdmin.md [MaxAdmin Service] type=service router=cli # Listener definitions for the services # # These listeners represent the ports the # services will listen on. # [Read-Only Listener] type=listener service=Read-Only Service protocol=MySQLClient port=4008 [Read-Write Listener] type=listener service=Read-Write Service protocol=MySQLClient port=4006 [MaxAdmin Listener] type=listener service=MaxAdmin Service protocol=maxscaled socket=default
保存并退出。 8.下面创建启动脚本
[root@localhost ~]# cp /usr/local/maxscale-2.1.3.centos.7/share/maxscale.service /usr/lib/systemd/system/ [root@localhost ~]# vim /usr/lib/systemd/system/maxscale.service
