mysql_execute_command() 当做入口开始分析,可以看出change_master需要SUPER权限 case SQLCOM_CHANGE_MASTER: { if (check_global_access(thd, SUPER_ACL)) goto error; res= change_master_cmd(thd); break; } /* 函数具备以下功能 更改接收/执行日志的配置/位点 purge relay log 删除 worker info(并行复制使...
CHANGE MASTER TO MASTER_HEARTBEAT_PERIOD= <value>; START SLAVE IO_THREAD; Note that the applier thread keeps executing the transactions in the relay log while you change the heartbeat period for the master-slave connection. Likewise, you could do this with all the attributes mentioned in group...
In order to add/alter an option using CHNAGE MASTER TO command, currently it is necessary to do a STOP SLAVE before CHANGE MASTER. This worklog relaxes this constraint. Lets look at the three scenarios below to understand more about this task. 1) BOTH IO AND SQL THREAD ARE STOPPED When ...
Description:CHANGE MASTER TO command always gives error if the command has MASTER_HEARTBEAT_PERIOD params . ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'MASTER_HEARTBEAT_PERIOD=90'...
A patch for this bug has been committed. After review, it may be pushed to the relevant source trees for release in the next version. You can access the patch from:http://lists.mysql.com/commits/614592791 Andrei Elkin 2008-12-12Bug #39077Command "change master" causes server crash (test...
Chriss-MacBook-Pro:mysql Chris$ chown -R mysql . I am really stuck. Any advice would be much appreciated. Thanks in advance. Subject Written By Posted OSX: Change owner command: Operation not permitted. Chris Astles November 12, 2017 01:17PM ...
master_ip_online_change_script 指的是手动执行mysql master switchover时执行的切换脚本。 没有使用 keepalived ,通过脚本的方式管理vip。 # cp /usr/local/bin/master_ip_online_change /usr/local/bin/master_ip_online_change.bak# vi /usr/local/bin/master_ip_online_change#!/usr/bin/env perlusestric...
master_ip_online_change_script= /usr/local/bin/master_ip_online_change master_ip_online_change_script 指的是手动执行mysql master switchover时执行的切换脚本。 # cat /etc/mysql_mha/app1.cnf [server default] manager_log=/data/mysql_mha/app1-manager.log ...
# 1) Use the CHANGE MASTER TO command (fully described in our manual) - # the syntax is: # # CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>, # MASTER_USER=<user>, MASTER_PASSWORD=<password> ; # # where you replace <host>, <user>, <password> by quoted strings and ...
mysql主从复制 一、搭建环境: 2.1清理数据库环境 pkill mysqld rm -rf /data/3306/* mkdir -p /data/3306/data /data/3306/binlog chown -R mysql.mysql /data/* 2.2 制作mysql配置文件 master(db01): mv /etc/my.cnf /tmp cat > /etc/my.cnf <<EOF...