HAProxy实现slave负载均衡[高可用]
下面要执行的是HAProxy部分
这是一个集群,其他的部分在:
mysql-slave负载均衡[高可用]
1.安装haproxy
tar zxvf haproxy-1.4.13.tar.gz cd haproxy-1.4.13/ mkdir -p /usr/local/haproxy make TARGET=linux26 PREFIX=/usr/local/haproxy ##我的系统内核为2.6,所以target=linux26 make install PREFIX=/usr/local/haproxy
2.配置文件
mkdir /etc/haproxy touch /etc/haproxy/haproxy.cfg vim /etc/haproxy/haproxy.cfg
haproxy.cfg
global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon stats socket /var/lib/haproxy/stats defaults mode tcp log global option dontlognull option redispatch retries 3 timeout http-request 10s timeout queue 1m timeout connect 10s timeout client 1m timeout server 1m timeout http-keep-alive 10s timeout check 10s maxconn 600 listen stats mode http bind :6677 stats enable stats hide-version stats uri /haproxyadmin?stats stats realm Haproxy\ Statistics stats auth admin:admin stats admin if TRUE frontend main 192.168.99.55:9090 default_backend mysql backend mysql balance leastconn server slave75.57 192.168.99.57:3306 check port 3306 maxconn 300 server slave75.62 192.168.99.62:3306 check port 3306 maxconn 300
haproxy服务脚本
#!/bin/sh # # haproxy # # chkconfig: - 85 15 # description: HAProxy is a free, very fast and reliable solution \ # offering high availability, load balancing, and \ # proxying for TCP and HTTP-based applications # processname: haproxy # config: /etc/haproxy/haproxy.cfg # pidfile: /var/run/haproxy.pid # Source function library. . /etc/rc.d/init.d/functions # Source networking configuration. . /etc/sysconfig/network # Check that networking is up. [ "$NETWORKING" = "no" ] && exit 0 exec="/usr/sbin/haproxy" prog=$(basename $exec) [ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog cfgfile=/etc/haproxy/haproxy.cfg pidfile=/var/run/haproxy.pid lockfile=/var/lock/subsys/haproxy check() { $exec -c -V -f $cfgfile $OPTIONS } start() { $exec -c -q -f $cfgfile $OPTIONS if [ $? -ne 0 ]; then echo "Errors in configuration file, check with $prog check." return 1 fi echo -n $"Starting $prog: " # start it up here, usually something like "daemon $exec" daemon $exec -D -f $cfgfile -p $pidfile $OPTIONS retval=$? echo [ $retval -eq 0 ] && touch $lockfile return $retval } stop() { echo -n $"Stopping $prog: " # stop it here, often "killproc $prog" killproc $prog retval=$? echo [ $retval -eq 0 ] && rm -f $lockfile return $retval } restart() { $exec -c -q -f $cfgfile $OPTIONS if [ $? -ne 0 ]; then echo "Errors in configuration file, check with $prog check." return 1 fi stop start } reload() { $exec -c -q -f $cfgfile $OPTIONS if [ $? -ne 0 ]; then echo "Errors in configuration file, check with $prog check." return 1 fi echo -n $"Reloading $prog: " $exec -D -f $cfgfile -p $pidfile $OPTIONS -sf $(cat $pidfile) retval=$? echo return $retval } force_reload() { restart } fdr_status() { status $prog } case "$1" in start|stop|restart|reload) $1 ;; force-reload) force_reload ;; check) check ;; status) fdr_status ;; condrestart|try-restart) [ ! -f $lockfile ] || restart ;; *) echo $"Usage: $0 {start|stop|status|restart|try-restart|reload|force-reload}" exit 2 esac
3.启动
service haproxy start netstat -tlnp | grep haproxy tcp 0 0 0.0.0.0:6677 0.0.0.0:* LISTEN 32360/haproxy tcp 0 0 192.168.75.55:9090 0.0.0.0:* LISTEN 32360/haproxy ps aux | grep haproxy haproxy 32360 0.0 0.0 14416 1524 ? Ss 15:12 0:00 /usr/sbin/haproxy -D -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid root 32685 0.0 0.0 103244 840 pts/1 S+ 15:32 0:00 grep haproxy
4.检测
4.1浏览器
浏览器地址栏: http://192.168.99.55:6677/haproxyadmin?stats
上面的这个配置在haproxy.cfg里面
4.2navicat
第一次连接连的是62
关闭, 重新连接
这次连的是57
看数据库不同从而分析, 成功!
完毕!