mysql自动化运维脚本_mysql互主自动化配置脚本
在做mysql主从和互主配置时，如果一步一步操作，经常会调整半天，浪费时间。其实原理很简单，通过IO线程对bin-log进行相互同步，然后有个sql线程把bin-log执行一遍，为了防止相互打架，设置一个offset，于是就想怎么样提高效率，最短的时间把环境搭建好，好在只要想就是有办法的，写个shell脚本，执行完搞定，脚本里对mysql本身并未做过多优化，只保证保主从、互主的成功，分享出来，在研究这个东西的可以了解一下。
3个脚本，第1个在第1台服务器上执行，第2个在第2台服务器上执行，还有一个changemaster脚本，必要时很好用的，不用1条1条的敲了，不废话了，上脚本，里面像IP和密码这些东西还是要手动改一下的，master-host等也是得手动改一下，研究这个的一看就明白了。
第1台服务器：#!/bin/sh
#writer:gaolixu
binlog_path=/binlog
[ -S /var/lib/mysql/mysql.sock ] && { echo 系统中已安装mysql！！！请卸载…;exit;}
yum -y install mysql-server mysql
service mysqld start
sleep 1
mkdir -p $binlog_path
chown -R mysql:mysql $binlog_path
mysqladmin -u root password ‘123’
mysql -u root -p123 -e “grant replication slave on *.* to slave@’%’ identified by ‘123’”
echo “[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-bin=$binlog_path/master
log-bin-index=$binlog_path/master
server-id=1
#expire-logs-days=100
#replicate-do-db=test
#master-host=192.168.3.254
#master-user=slave
#master-password=123
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
auto-increment-increment=2
auto-increment-offset=1
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid” > /etc/my.cnf
service mysqld restart
echo “root用户密码为123，slave用户密码为123，请及时更改！！！”
mysql -u root -p123 -e “show master status\G”
第2台服务器：#!/bin/sh
#writer:gaolixu
binlog_path=/binlog
[ -S /var/lib/mysql/mysql.sock ] && { echo 系统中已安装mysql！！！请卸载…;exit;}
yum -y install mysql-server mysql
service mysqld start
sleep 1
mkdir -p $binlog_path
chown -R mysql:mysql $binlog_path
mysqladmin -u root password ‘123’
mysql -u root -p123 -e “grant replication slave on *.* to slave@’%’ identified by ‘123’”
echo “[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-bin=$binlog_path/master
log-bin-index=$binlog_path/master
server-id=2
#expire-logs-days=100
#replicate-do-db=test
#master-host=192.168.3.254
#master-user=slave
#master-password=123
binlog-ignore-db=mysql
binlog-ignore-db=information_schema
auto-increment-increment=2
auto-increment-offset=2
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid” > /etc/my.cnf
service mysqld restart
echo “root用户密码为123，slave用户密码为123，请及时更改！！！”
mysql -u root -p123 -e “show master status\G”
changemaster脚本：#!/bin/sh
#writer:gaolixu
echo “默认使用帐号slave,密码123”
read -p “请输入master_host(ip):” h
read -p “请输入master_log_file:” lf
read -p “请输入master_log_pos:” lp
h=\‘$h\‘
lf=\‘$lf\‘
mysql -u root -p123 <
change master to master_host=$h,master_user=’slave’,master_password=’123’,master_log_file=$lf,master_log_pos=$lp;
start slave;
exit
!
mysql -u root -p123 -e “show slave status\G”|grep Slave
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