mysqlcluster解决方案
2020-11-09
来源：乌哈旅游
Mysqlcluster实验1测试环境：1.1软件系统版本Gentoo3.8.13Mysql5.1.67Haproxy-1.4.241.2架构1.3主机信息hostnameNetworkinterfaceIPaddrnote主机编号Mysq..
Mysql cluster
重启mysql
/etc/init.d/mysql restart
在主机3-4上
Mysql –uroot –p
Change master to
Master_host=’192.168.254.111’,
Master_port=3306,
Master_user=’copy’,
Master_password=’copy’,
Master_log_file=’mysql-bin.000005’,
Master_log_pos=’106’;
Start slave;
Show slave status;
测试
同上，分别在1和2上创建1个数据库，看是否同步
5 安装xinetd
在主机1-6上
Emerge –av xinetd
Rc-update add xinetd default
/etc/init.d/xinetd start
在主机1-2上
Vi /etc/xinetd.d/mysqlchk
# # /etc/xinetd.d/mysqlchk # service mysqlchk_write { flags = REUSE socket_type = stream port = 9200 wait = no user = nobody server = /opt/mysqlchk_status.sh log_on_failure += USERID disable = no only_from =192.168.254.0/24 } service mysqlchk_replication { flags = REUSE socket_type = stream port = 9201 wait = no user = nobody server = /opt/mysqlchk_replication.sh log_on_failure += USERID disable = no only_from = 192.168.254.0/24 }在主机1上
Vi /opt/mysqlchk_status.sh
#!/bin/bash MYSQL_HOST="localhost" MYSQL_PORT="3306" MYSQL_USERNAME="root" MYSQL_PASSWORD="root" ERROR_MSG=`/usr/bin/mysql --host=$MYSQL_HOST --port=$MYSQL_PORT --user=$MYSQL_USERNAME --password=$MYSQL_PASSWORD -e "show databases;" 2>dev/null` if [ "$ERROR_MSG" != "" ] then # mysql is fine, return http 200 /bin/echo -e "HTTP/1.1 200 OK\r\n" /bin/echo -e "Content-Type: Content-Type:text\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL is running.\r\n" /bin/echo -e "\r\n" else #mysql is down, return http 503 /bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MYSQL is *down*.\r\n" /bin/echo -e "\r\n" fiVi /opt/mysqlchk_replication.sh
#!/bin/bash MYSQL_HOST="localhost" MYSQL_PORT="3306" MYSQL_USERNAME="root" MYSQL_PASSWORD="root" /usr/bin/mysql --host=$MYSQL_HOST --port=$MYSQL_PORT --user=$MYSQL_USERNAME --password=$MYSQL_PASSWORD -e "show slave status;" > /tmp/check_repl.txt iostat=`grep "Slave_IO_Running" /tmp/check_repl.txt | awk '{print $2}'` sqlstat=`grep "Slave_SQL_Running" /tmp/check_repl.txt | awk '{print $2}'` #echo iostat:$iostat and sqlstat:$sqlstat if [ "$iostat" = "No" ] || [ "$sqlstat" = "No" ]; then #mysql is down,return http 503 /bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL replication is *down*.\r\n" /bin/echo -e "\r\n" else #mysql is fine,return http 200 /bin/echo -e "HTTP/1.1 200 OK\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL replication is running.\r\n" /bin/echo -e "\r\n" fi在主机2上
Vi /opt/mysqlchk_status.sh
#!/bin/bash MYSQL_HOST="localhost" MYSQL_PORT="3306" MYSQL_USERNAME="root" MYSQL_PASSWORD="root" ERROR_MSG=`/usr/bin/mysql --host=$MYSQL_HOST --port=$MYSQL_PORT --user=$MYSQL_USERNAME --password=$MYSQL_PASSWORD -e "show databases;" 2>dev/null` if [ "$ERROR_MSG" != "" ] then # mysql is fine, return http 200 /bin/echo -e "HTTP/1.1 200 OK\r\n" /bin/echo -e "Content-Type: Content-Type:text\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL is running.\r\n" /bin/echo -e "\r\n" else #mysql is down, return http 503 /bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MYSQL is *down*.\r\n" /bin/echo -e "\r\n" fiVi /opt/mysqlchk_replication.sh
#!/bin/bash MYSQL_HOST="localhost" MYSQL_PORT="3306" MYSQL_USERNAME="root" MYSQL_PASSWORD="root" /usr/bin/mysql --host=$MYSQL_HOST --port=$MYSQL_PORT --user=$MYSQL_USERNAME --password=$MYSQL_PASSWORD -e "show slave status;" > /tmp/check_repl.txt iostat=`grep "Slave_IO_Running" /tmp/check_repl.txt | awk '{print $2}'` sqlstat=`grep "Slave_SQL_Running" /tmp/check_repl.txt | awk '{print $2}'` #echo iostat:$iostat and sqlstat:$sqlstat if [ "$iostat" = "No" ] || [ "$sqlstat" = "No" ]; then #mysql is down,return http 503 /bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL replication is *down*.\r\n" /bin/echo -e "\r\n" else #mysql is fine,return http 200 /bin/echo -e "HTTP/1.1 200 OK\r\n" /bin/echo -e "Content-Type: Content-Type:text/plain\r\n" /bin/echo -e "\r\n" /bin/echo -e "MySQL replication is running.\r\n" /bin/echo -e "\r\n" fi在主机3-6上
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