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Pacemaker - Cluster Configuration for httpd
2011/06/18 |
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Configure Clustering for httpd. Stop httpd on both Hosts.
This example shows to configure on the environment like follows.
(1) www01.srv.world ( eth0 [192.168.1.60], eth1 [10.0.0.60] ) (2) www02.srv.world ( eth0 [192.168.1.61], eth1 [10.0.0.61] )
This example uses eth0 for inter-connection and uses eth1 for service provider.
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| [1] |
Set Virtual IP Address first.
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| [2] | Enable server-status on httpd. Set it on both Hosts. |
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[root@www01 ~]#
vi /etc/httpd/conf/httpd.conf # line 921-926: uncomment and chnage acceses permittion <Location /server-status> SetHandler server-status Order deny,allow Deny from all Allow from 127.0.0.1 10.0.0.0/24 </Location> |
| [3] | Configure Clustering. Set it on a Host. |
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[root@www01 ~]# crm configure crm(live)configure# primitive httpd ocf:heartbeat:apache \ > params configfile="/etc/httpd/conf/httpd.conf" \ > port="80" \ > op start interval="0s" timeout="60s" \ > op monitor interval="5s" timeout="20s" \ > op stop interval="0s" timeout="60s" crm(live)configure# group webserver vip httpd # create a group crm(live)configure# show # confirm settings
node www01.srv.world
node www02.srv.world
primitive httpd ocf:heartbeat:apache \
params configfile="/etc/httpd/conf/httpd.conf" port="80" \
op start interval="0s" timeout="60s" \
op monitor interval="5s" timeout="20s" \
op stop interval="0s" timeout="60s"
primitive vip ocf:heartbeat:IPaddr2 \
params ip="10.0.0.100" cidr_netmask="24" \
op start interval="0s" timeout="60s" \
op monitor interval="5s" timeout="20s" \
op stop interval="0s" timeout="60s"
group webserver vip httpd
property $id="cib-bootstrap-options" \
dc-version="1.1.2-f059ec7ced7a86f18e5490b67ebf4a0b963bccfe" \
cluster-infrastructure="openais" \
expected-quorum-votes="2" \
no-quorum-policy="ignore" \
stonith-enabled="false"
rsc_defaults $id="rsc-options" \
resource-stickiness="INFINITY" \
migration-threshold="1"
crm(live)configure# commit # enable settings crm(live)configure# exit bye |
| [4] | Make sure status with crm_mon, then httpd starts on a Host. |
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[root@www01 ~]# crm_mon
============
Last updated: Sun Jun 19 02:36:45 2011
Stack: openais
Current DC: www01.srv.world - partition with quorum
Version: 1.1.2-f059ec7ced7a86f18e5490b67ebf4a0b963bccfe
2 Nodes configured, 2 expected votes
1 Resources configured.
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Online: [ www01.srv.world www02.srv.world ]
Resource Group: webserver
vip (ocf::heartbeat:IPaddr2): Started www01.srv.world
httpd (ocf::heartbeat:apache): Started www01.srv.world
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| [5] | Access to Virtual IP address, then active Host answers like follows. |
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| [6] | Stop httpd forcely on active Host, then swith to www02.srv.world an once like follows. |
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