How to make High Available Load Balancer(L4/L7) with haproxy and Pacemaker - 2/4

3. Load Balancer(L4/L7) "haproxy" Build, Install and Configuration

Active/Standby Node에 아래와 같은 과정을 통해 haproxy를 설치한다.

• Download haproxy Lastest version (2013년 2월 현재 1.4.22)
• http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.22.tar.gz

• Tarball 전개 (# (shop)은 root previlege를 의미한다.)
• # tar xvzf ./haproxy-1.4.22.tar.gz

• Build
• # make TARGET=linux26 ARCH=x86_64

• Install
• # make install

• Make Configuration File
• # mkdir /etc/haproxy
• /etc/haproxy/haproxy.cfg
• 서비스를 VIP와 binding하기 위해서는 반드시 bind 192.168.0.10:80으로 설정
• 그 밖의 Configuration은 Link를 참조한다. http://cbonte.github.com/haproxy-dconv/configuration-1.4.html

global

daemon

group    daemon

user    daemon

pidfile    /var/run/haproxy.pid


 

defaults

mode    http

log    global

stats    enable

       

listen    Service_Name

bind    192.168.0.10:80

balance    roundrobin

server    RN1 192.168.0.21:80

server    RN2 192.168.0.22:80

server    RN3 192.168.0.23:80

server    RN4 192.168.0.24:80

• Builded Binary를 LSB(Linux Standard Base)에 맞춤 (LSB: http://en.wikipedia.org/wiki/Linux_Standard_Base, http://linux-ha.org/wiki/LSB_Resource_Agents)
• Download http://haproxy.1wt.eu/download/contrib/haproxy.init.el5
• # chmod 755 ./haproxy.init.el5
• # mv ./haproxy.init.el5 /etc/init.d/haproxy
• # ln -s /usr/local/sbin/haproxy /usr/sbin/haproxy
• Check

# /etc/init.d/haproxy check

Configuration file is valid