Corosync Pacemaker Haproxy Cluster

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        Corosync Pacemaker Haproxy Cluster Document.

I have using RHEL6.4 64 Bit Machines
IP 192.168.0.100  Name Node1.example.com
IP 192.168.0.101  Name Node2.example.com
IP 192.168.0.200 (Virtual IP)

1. installing require Packages both Node ( Node1 & Node2 )
# yum install haproxy corosync pacemaker openssh-clients http* -y

# wget -c http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/x86_64/crmsh-2.1-1.6.x86_64.rpm

# wget -c http://pkgs.repoforge.org/pssh/pssh-2.0-1.el6.rf.noarch.rpm

# rpm -ivh pssh-2.0-1.el6.rf.noarch.rpm

# yum  install crmsh-2.1-1.6.x86_64.rpm

2. Configure host file both Node ( Node1 & Node2 )
# vim /etc/hosts ( NODE1 Machine)
192.168.0.100  Node1.example.com  Node1
192.168.0.101  Node2.example.com  Node2

# vim /etc/hosts  ( NODE2 Machine )
192.168.0.100  Node1.example.com  Node1
192.168.0.101  Node2.example.com  Node2


3. Configure httpd for testing  both Node ( Node1 & Node2 )
# vim /etc/httpd/conf/httpd.conf ( NODE1 Machine )
Listen 192.168.4.100:8080
ServerName example.com

# cd /var/www/html/
# vim index.html
haproxy NODE1

# /etc/init.d/httpd  restart


# vim /etc/httpd/conf/httpd.conf ( NODE2 Machine )
Listen 192.168.4.101:8080
ServerName example.com

# cd /var/www/html/
# vim index.html
haproxy NODE2

# /etc/init.d/httpd  restart

4. Configure Haproxy both Node ( Node1 & Node2 Machine )
# cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg-ORG
# vim  /etc/haproxy/haproxy.cfg

global

    log         172.0.0.1 local2 debug

    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     4096
    user        haproxy
    group       haproxy
    daemon

    # turn on stats unix socket
    stats socket /var/lib/haproxy/stats

#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
    mode                    http
    log                     global
    option                  httplog
    option                  dontlognull
#    option http-server-close
    option forwardfor     
    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                 3000

listen  Haproxy-APP 192.168.0.200:80 (Vertual IP)
        balance roundrobin
        option httpclose
       # option forwardfor
        option forwardfor header X-Real-IP
        server  APPSERVER1 192.168.0.100:8080 check  (Machine IP NODE1)
        server  APPSERVER2 192.168.0.101:8080 check  (Machine IP NODE2)

listen admin
    bind *:5050
    stats enable
    stats realm Haproxy\ Statistics
    stats uri /
    stats auth admin:example@123


# scp  /etc/haproxy/haproxy.cfg  192.168.0.101:/etc/haproxy/haproxy.cfg

# cp /etc/corosync/corosync.conf.example /etc/corosync/corosync.conf  both Node ( Node1 & Node2 Machine )

# corosync-keygen
Corosync Cluster Engine Authentication key generator.
Gathering 1024 bits for key from /dev/random.
Press keys on your keyboard to generate entropy.
Press keys on your keyboard to generate entropy (bits = 128).
Press keys on your keyboard to generate entropy (bits = 192).
Press keys on your keyboard to generate entropy (bits = 256).
Press keys on your keyboard to generate entropy (bits = 320).
Press keys on your keyboard to generate entropy (bits = 384).
Press keys on your keyboard to generate entropy (bits = 456).
Press keys on your keyboard to generate entropy (bits = 520).
Press keys on your keyboard to generate entropy (bits = 584).
Press keys on your keyboard to generate entropy (bits = 648).
Press keys on your keyboard to generate entropy (bits = 712).
Press keys on your keyboard to generate entropy (bits = 776).
Press keys on your keyboard to generate entropy (bits = 840).
Press keys on your keyboard to generate entropy (bits = 904).
Press keys on your keyboard to generate entropy (bits = 968).
Writing corosync key to /etc/corosync/authkey.

# scp /etc/corosync/authkey root@192.168.0.101:/etc/corosync
# vim /etc/corosync/corosync.conf
compatibility: whitetank

totem {
        version: 2

        secauth: on

        threads: 0

        interface {
                ringnumber: 0
                bindnetaddr: 192.168.4.134 (Node1 IP)
                mcastaddr: 239.255.1.1
                mcastport: 5405
                ttl: 1
        }
}

logging {
        fileline: off
        to_stderr: no
        to_logfile: yes
        logfile: /var/log/cluster/corosync.log
        to_syslog: yes
        debug: off
        timestamp: on
        logger_subsys {
                subsys: AMF
                debug: off
        }
}

# vi /etc/corosync/service.d/pcmk
service {
# Load the Pacemaker Cluster Resource Manager
name: pacemaker
ver: 1
}

# scp /etc/corosync/corosync.conf  root@192.168.4.131:/etc/corosync/  (change IP in node2 )
# scp /etc/corosync/service.d/pcmk  root@192.168.4.131:/etc/corosync/service.d/
# service corosync start
# service pacemaker start
# crm status
Last updated: Mon Jun 15 07:19:50 2015
Last change: Mon Jun 15 07:19:20 2015
Stack: classic openais (with plugin)
Current DC: node1.aap1 - partition WITHOUT quorum
Version: 1.1.11-97629de
2 Nodes configured, 2 expected votes
2 Resources configured


Online: [ node1.aap1 ]
OFFLINE: [ node2.app2 ]

# crm configure property stonith-enabled=false
# crm configure property no-quorum-policy=ignore
# crm configure  primitive haproxy_fi IPaddr2  params ip=192.168.4.200  cidr_netmask=24   op monitor interval=30s

# cd /usr/lib/ocf/resource.d/heartbeat/
# wget http://github.com/russki/cluster-agents/raw/master/haproxy   ( Download Both Node )
# chmod 744 haproxy
# cd
# crm configure primitive haproxyLB ocf:heartbeat:haproxy params conffile=/etc/haproxy/haproxy.cfg op monitor interval=30s

# crm configure show
node Node1.example.com
primitive haproxyLB haproxy \
        params conffile="/etc/haproxy/haproxy.cfg" \
        op monitor interval=30s
primitive haproxy_fi IPaddr2 \
        params ip=192.168.4.200 cidr_netmask=24 \
        op monitor interval=30s
property cib-bootstrap-options: \
        dc-version=1.1.11-97629de \
        cluster-infrastructure="classic openais (with plugin)" \
        expected-quorum-votes=2 \
        stonith-enabled=false \
        no-quorum-policy=ignore

# crm configure  edit ( Add Below line
group haproxy_group haproxy_fi
colocation haproxyWithIPs inf: haproxyLB haproxy_group
order haproxyAfterIPs Mandatory: haproxy_group haproxyLB

# crm configure show
node Node1.example.com
primitive haproxyLB haproxy \
        params conffile="/etc/haproxy/haproxy.cfg" \
        op monitor interval=30s
primitive haproxy_fi IPaddr2 \
        params ip=192.168.4.200 cidr_netmask=24 \
        op monitor interval=30s
group haproxy_group haproxy_fi
colocation haproxyWithIPs inf: haproxyLB haproxy_group
order haproxyAfterIPs Mandatory: haproxy_group haproxyLB
property cib-bootstrap-options: \
        dc-version=1.1.11-97629de \
        cluster-infrastructure="classic openais (with plugin)" \
        expected-quorum-votes=2 \
        stonith-enabled=false \
        no-quorum-policy=ignore

Save and Quit

# /etc/init.d/haproxy restart
# /etc/init.d/httpd restart

NODE2
# /etc/init.d/corosync start
# /etc/init.d/pacemaker start

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