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The following gives you a detailed explanation of Haproxy+keepalived how to achieve sphinx high-availability load balancer, hoping to bring some help to you in practical application. Load balancing involves more things, there are not many theories, and there are many books on the Internet. Today, we will use the accumulated experience in the industry to do an answer.

Implementing sphinx High availability load balancing with Haproxy+keepalived

The environment is as follows:

[node3]

Haproxy:192.168.1.189

[node4]

Haproxy:192.168.1.103

Vip:192.168.1.222/192.168.1.223

# apt-get install ipvsadm

# apt-get install linux-headers-$ (uname-r)

# ln-s / usr/src/linux-headers-2.6.32-33 / usr/src/linux

# wget http://www.keepalived.org/software/keepalived-1.2.2.tar.gz

# tar zxvf keepalived-1.2.2.tar.gz-C.. / software/

#. / configure-prefix=/usr/local/keepalived-1.2.2

Configure: error:!!! OpenSSL is not properly installed on your system. ! Can not include OpenSSL headers files. Solution:

# apt-get install libssl-dev

Configure: error: Popt libraries is required

Solution:

# apt-get install libpopt-dev

Configure: WARNING: keepalived will be built without libnl support.

Solution:

# apt-get install libnl-dev

/ usr/include/stdint.h:41: error: conflicting types for 'int64_t'

/ usr/src/linux/include/linux/types.h:125: error: previous declaration of 'int64_t' was here

/ usr/include/stdint.h:56: error: conflicting types for 'uint64_t'

Solution:

# vim. / keepalived/libipvs-2.6/ip_vs.h

Move # include behind # include.

#. / configure-prefix=/usr/local/keepalived-1.2.2

Keepalived configuration

-

Keepalived version: 1.2.2

Compiler: gcc

Compiler flags:-g-O2

Extra Lib:-lpopt-lssl-lcrypto-lnl

Use IPVS Framework: Yes

IPVS sync daemon support: Yes

IPVS use libnl: Yes

Use VRRP Framework: Yes

Use Debug flags: No

# make

# make install

# vim / etc/sysctl.conf

Net.ipv4.ip_nonlocal_bind=1

# sysctl-p

[node3]

Global_defs {

Router_id LVS_DEVEL

}

Vrrp_script chk_haproxy {

Script "/ usr/local/scripts/chk_haproxy.sh"

Interval 2

Weight 2

}

Vrrp_instance VI_1 {

State MASTER

Interface eth0

Virtual_router_id 76

Priority 150

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 123456

}

Track_script {

Chk_haproxy

}

Virtual_ipaddress {

192.168.1.222

}

}

Vrrp_instance VI_2 {

State BACKUP

Interface eth0

Virtual_router_id 77

Priority 100

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 123456

}

Track_script {

Chk_haproxy

}

Virtual_ipaddress {

192.168.1.223

}

}

[node4]

Global_defs {

Router_id LVS_DEVEL

}

Vrrp_script chk_haproxy {

Script "/ usr/local/scripts/chk_haproxy.sh"

Interval 2

Weight 2

}

Vrrp_instance VI_1 {

State BACKUP

Interface eth0

Virtual_router_id 76

Priority 100

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 123456

}

Track_script {

Chk_haproxy

}

Virtual_ipaddress {

192.168.1.222

}

}

Vrrp_instance VI_2 {

State MASTER

Interface eth0

Virtual_router_id 77

Priority 150

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 123456

}

Track_script {

Chk_haproxy

}

Virtual_ipaddress {

192.168.1.223

}

}

# vim chk_haproxy.sh

#! / bin/bash

STATUS= `netstat-nptl | grep haproxy | grep 3312 | wc-l`

If ["$STATUS"-eq "0"]; then

/ usr/local/haproxy-1.4.18/sbin/haproxy-f / usr/local/haproxy-1.4.18/haproxy.conf

STATUS2= `netstat-nptl | grep haproxy | grep 3312 | wc-l`

If ["$STATUS2"-eq "0"]; then

Kill-9 $(ps-ef | grep keepalived | grep-v grep | awk'{print $2}')

Fi

Fi

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