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linux下高可用mysql

作者 佚名技术 来源 Linux系统 浏览 发布时间 2012-04-07
line: # symbolic-links=0 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid 原从库服务器(IP地址:10.10.10.52)配置文件内容如下: /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql server-id=2 master-host=10.10.10.51 master-user=slave master-password=slave master-port=3306 master-connect-retry=60 # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 # Disabling symbolic-links is recommended to prevent assorted security risks; # to do so, uncomment this line: # symbolic-links=0 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid /etc/my.cnf.master [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql server-id=1 log-bin=swaplog # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 # Disabling symbolic-links is recommended to prevent assorted security risks; # to do so, uncomment this line: # symbolic-links=0 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid /etc/my.cnf.slave [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql server-id=2 master-host=10.10.10.51 master-user=slave master-password=slave master-port=3306 master-connect-retry=60 # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 # Disabling symbolic-links is recommended to prevent assorted security risks; # to do so, uncomment this line: # symbolic-links=0 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid 服务器主从自动切换,当数据库服务器有一台离线,另外一台可以上线开始工作,实现高可用. 在原主库服务器( 拥有帝国一切,皆有可能。欢迎访问phome.netIP地址:10.10.10.51)上写入脚本,当主库服务器与WEB服务器失去联系后自动变成从属服务器(如果此服务器没有宕机) 脚本内容如下: #/bin/bash #原MYSQL 主服务器使用的脚本 check=`cat /etc/my.cnf | grep server-id` if [ "$check" = "server-id=1" ] then link=`ping -c 1 10.10.10.100 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.100 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.100 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.100 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.100 | grep "from" | awk ''{print $4}''` if [ "$link" != "10.10.10.100:" ] then link=`ping -c 1 10.10.10.52 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.52 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.52 | grep "from" | awk ''{print $4}''` link=`ping -c 1 10.10.10.52 | grep "from" | awk ''{print $4}''` lin

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