Haproxy Proxy Web Service

-----client---------haproxy-------nginx1---------nginx2------

192.168.1.250 192.168.1.1 192.168.1.10 192.168.1.20

First, install Nginx

[Email protected] ~]# yum-y install Pcre-devel zlib-devel

[Email protected] ~]# useradd-m-s/sbin/nologin nginx

[Email protected] ~]# TAR-ZXVF nginx-1.6.0.tar.gz-c/usr/src/

[Email protected] ~]# cd/usr/src/nginx-1.6.0/

[Email protected] nginx-1.6.0]#/configure--

Prefix=/usr/local/nginx--user=nginx--group=nginx--with-fileaio

--with-http_stub_status_module--with-http_gzip_static_module

--with-http_flv_module--with-http_ssl_module

[[email protected] nginx-1.6.0]# make && make install

[Email protected] ~]# ln-s/usr/local/nginx/sbin/*

/usr/local/sbin/

[Email protected] ~]# nginx-t

[Email protected] ~]# Nginx

[Email protected] ~]# NETSTAT-ANPT | grep 80

[[email protected] ~]# killall-s HUP nginx//Reload

[[email protected] ~]# killall-s QUIT nginx//Shutdown service

[Email protected] ~]# Nginx

Verify:

Web-1:

[[Email protected] ~] #echo "Welcome to 192.168.1.20 Web Server" >

/usr/local/nginx/html/index.html

Web-2:

[[Email protected] ~] #echo "Welcome to 192.168.1.30 Web Server" >

/usr/local/nginx/html/index.html

[email protected] ~]# Firefox http://localhost/&

Second, installation Haproxy

1. Installation

[Email protected] ~]# yum-y install Pcre-devel zlib-devel

[Email protected] ~]# TAR-ZXVF haproxy-1.4.24.tar.gz-c/usr/src/

[Email protected] ~]# cd/usr/src/haproxy-1.4.24/

[email protected] ~]# make target=linux26

Prefix=/usr/local/haproxy

Note: Linux26 refers to the kernel version number of Linux.

[[email protected] ~]# make install Prefix=/usr/local/haproxy

2, Configuration Haproxy

[Email protected] ~]# Mkdir/etc/haproxy

[Email protected] ~]# cp/usr/src/haproxy-

1.4.24/examples/haproxy.cfg/etc/haproxy/

[Email protected] ~]# vim/etc/haproxy/haproxy.cfg

Modify:

Global

Log 127.0.0.1 local0//configuration logging, local0 as log device, default

Store to System log

Log 127.0.0.1 local1 Notice//notice is logging level, usually with 7 levels

#log Loghost local0 Info

Maxconn 4096//default maximum number of connections, consider the ulimit-n limit:

Limits on the number of Ulimit-n 819200 #ulimit can be increased

Chroot/usr/share/haproxy//Run path

UID 99

GID 99

#debug

#quiet

Defaults

Log global//define logs as logs in global

Mode HTTP//pattern for HTTP

Option Httplog//log format with HTTP

Option Dontlognull//Do not record health check log information

Retries 3//Three connection failure is considered to be the server is not available, can also be set by the following

#redispatch

Maxconn 2000//Maximum number of connections

Contimeout 5000//Connection time-out

Clitimeout 50000//Client time-out

Srvtimeout 50000//service-time timeout

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

Listen Webcluster 0.0.0.0:80//define cluster name, listening address and port

Option Httpchk get/index.html Note: You can delete//check the server's

index.html file

Balance Roundrobin//load Balancing Polling algorithm

Server Inst1 192.168.1.20:80 Check Inter fall 3//Online node

Server Inst2 192.168.1.30:80 Check Inter fall 3//Last Add

Backup means back up the borrowing point

Attention:

If the error occurs at startup:/haproxy.main ()] Cannot

Chroot (/usr/share/haproxy)

is created manually:

[Email protected] ~]# Mkdir/usr/share/haproxy

If an error occurs when booting: Starting proxy cacti:cannot bind socket

Then execute:

[Email protected] ~]# SYSCTL-E net.ipv4.ip_nonlocal_bind=1

3. Start Haproxy

[Email protected] ~]# ln-s/usr/local/haproxy/sbin/*/usr/sbin///

Note the list of soft links

[Email protected]calhost ~]# cp/usr/src/haproxy-

1.4.24/examples/haproxy.init/etc/init.d/haproxy

[Email protected] ~]# chmod +x/etc/init.d/haproxy

[[email protected] ~]#/etc/init.d/haproxy start

[Email protected] ~]#/etc/init.d/haproxy status

[Email protected] ~]# NETSTAT-ANP | grep haproxy//takes up TCP as well.

80 ports

[Email protected] ~]# chkconfig--add haproxy

[Email protected] ~]# chkconfig haproxy on

Http://192.168.56.200:6677/haproxyadmin?stats viewing the status of a cluster

4. Verification:

Client input:

Http://192.168.1.1/

Disconnect one of the nodes, and then access:

Http://192.168.1.1/

5. Set Haproxy Log

[Email protected] ~]# vim/etc/haproxy/haproxy.cfg

Modify:

Log 127.0.0.1 Local3//Set Haproxy log level to 3

[Email protected] ~]# vim/etc/rsyslog.d/haproxy.conf

Add to:

$ModLoad imudp//Loading module

$UDPServerRun 514//Receive UDP 514 ports sent over the log

local3.*/var/log/haproxy.log//definition Haproxy log file

[Email protected] ~]# Vim/etc/sysconfig/rsyslog

Modify:

Syslogd_options= "-C 2-r-M 0"//Allow remote write

[Email protected] ~]#/etc/init.d/rsyslog restart

[Email protected] ~]#/etc/init.d/haproxy restart

Verify:

[[email protected] ~]# tail-f/var/log/haproxy.log//view Log

Third, verify:

Client input:

Http://192.168.1.1/index.html

Keep on refreshing!

View:

[Email protected] ~]# tail-f/var/log/haproxy/haproxy.log

Log records Client access information

Logs record Haproxy start/stop information

Haproxy+keepalived

Compiling and installing keepalived

[Email protected] keepalived-1.2.13]#./configure--prefix=/--withkernel-

dir=/usr/src/kernels/2.6.32-431.el6.x86_64/

[[email protected] keepalived-1.2.13]# make && make install

[[Email protected] ~] #chkconfig--add keepalived

[[Email protected] ~] #chkconfig keepalived on

[[Email protected] ~] #cp/etc/keepalived/keepalived.conf

/etc/keepalived/keepalived.conf.bak

[[Email protected] ~] #vim/etc/keepalived/keepalived.conf

[Email protected] conf]# vim/etc/keepalived/keepalived.conf

! Configuration File for Keepalived

Global_defs {

Notification_email {//notification e-mail

}

Vrrp_instance vi_1 {//VRRP hot spare

State master backup/hot standby status Master, backup supplemented

Nopreempt//No preemption, Master does not transfer after recovery

interface eth0//physical Interface hosting VIP

VIRTUAL_ROUTER_ID 51//Virtual route number, one per group

Priority 55/priorities, bigger, higher priority

Advert_int 1//Heartbeat frequency, unit seconds

Authentication {//authentication information, consistent within each group

Auth_type PASS//authentication type

Auth_pass 1111//Authentication string

}

virtual_ipaddress {//Drift address VIP. can have multiple

192.168.56.10

}

Notify_master "/etc/init.d/haproxy start"//Become master after

The action of the line

Notify_backup "/etc/init.d/haproxy Stop"//becomes backup after execution

The action

Notify_fault "/etc/init.d/haproxy stop" after//fault executed

Action

}

[[email protected] ~]#/etc/init.d/keepalived start

[[Email protected] ~] #ip addr Show

inet 192.168.56.201/24 BRD 192.168.56.255 Scope Global eth0

inet 192.168.56.10/32 Scope Global eth0

[[Email protected] ~] #netstat-anput | grep 80

This article is from the "11000174" blog, please be sure to keep this source http://11010174.blog.51cto.com/11000174/1890827

Haproxy Proxy Web Service