Load balancing for TCP layer using Haproxy

First download Haproxy package: Source Installation

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.13.tar.gz

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.24.tar.gz

Installation: Tar zxvf haproxy-1.4.13.tar.gz

Make Target=linux26 Prefix=/usr/local/haproxy # #我的系统内核为2.6, so target=linux26

Make install Prefix=/usr/local/haproxy #

I am the direct yum installation

Yum Install Haproxy

Add non-native IP bonding support

Reference vi/etc/sysctl.conf

Net.ipv4.ip_nonlocal_bind = 1 sysctl–p

If you are using an extranet, you do not need to use this

If the intranet is used and the backend service has a bound IP address, this step must be used #

Then configure:

Vi/etc/haproxy/haproxy.cfg

Global
Daemon
Nbproc 1
Pidfile/var/run/haproxy.pid # #默认配置

Defaults
Mode http #默认的模式mode {tcp|http|health},tcp is Layer 4, HTTP is 7 layer, health will only return OK
Retries 2 #两次连接失败就认为是服务器不可用, can also be set by the following
Option Redispatch #当serverId对应的服务器挂掉后, Force-directed to other healthy servers
Option Abortonclose #当服务器负载很高的时候 to automatically end the link that is being processed for the current queue
Maxconn 4096 #默认的最大连接数
Timeout Connect 5000ms #连接超时
Timeout client 30000ms #客户端超时
Timeout Server 30000ms #服务器超时
#timeout Check 2000 #= Heartbeat timeout
Log 127.0.0.1 local0 err #[err warning Info debug] # #统计页面配置

Listen Admin_stats
Bind 0.0.0.0:1080 #监听端口
Mode HTTP #http的7层模式
Option Httplog #采用http日志格式
#log 127.0.0.1 Local0 Err
Maxconn 10
Stats Refresh 30s #统计页面自动刷新时间
Stats Uri/stats #统计页面url
Stats Realm xingcloud\ Haproxy #统计页面密码框上提示文本
Stats Auth Admin:admin #统计页面用户名和密码设置
Stats hide-version #隐藏统计页面上HAProxy的版本信息# #test1配置

Listen Test1
Bind 0.0.0.0:90
Mode TCP
#maxconn 4086
#log 127.0.0.1 local0 Debug
Server S1 10.18.138.201:80
Server S2 10.18.102.190:80
Server S3 10.18.102.189:80
Server S4 10.18.102.188:80
Server S5 10.18.102.187:80 # #frontend配置 # #test2配置

Listen Test2
Bind 0.0.0.0:91
Mode TCP
#maxconn 4086
#log 127.0.0.1 local0 Debug
Server S1 10.18.138.130:80 weight 1
Server s2 10.18.138.201:8080 weight 6 # #frontend配置

Ok. Start Haproxy.

Haproxy/etc/haproxy/haproxy.cfg

Try it now and find that the load has been successful.

Configure keepalived

Yum Install keepalived

After the installation is complete, configure the Rsyslog

Vi/etc/rsyslog.d/haproxy.conf

Add the following content:

MODLOADIMUDP modload imudp Udpserverrun 514
local0.*/var/log/haproxy.log

Save, restart Rsyslogd.

Restart RSYSLOGD

OK. Now you can see the log.

Try.

Tail-f/var/log/haproxy.log

Finally, add a smooth restart command:

Haproxy-f/ETC/HAPROXY/HAPROXY.CFG-SF Cat/var/run/haproxy.pid