In our previous tutorial, we have shown you how to install corosync and pacemaker.
We will show you now how to add resources.
Before starting the configurations, please disable STONITH (Shoot The Other Node In The Head) with CRM command:
crm configure property stonith-enabled=false
check if stonith diabled:
[root@node1 ~]# crm configure show node node1 node node2 property $id="cib-bootstrap-options" dc..-version="1.1.10-14el6_52-368c726" cluster-infrastructure="classic openais (with plugin)" expected-quorum-votes="2" stonith-enabled="false"
Add Cluster Resources
The cluster resource is defined by a Resource Agent and most know cluster agent classes are:
LSB (Linux Standard Base) – These are common cluster resource agents found in /etc/init.d directory (init scripts).
Example:
[root@node1 ~]# crm ra list lsb NetworkManager abrt-ccpp abrt-oops abrtd acpid atd auditd autofs blk-availability bluetooth certmonger cntlmd corosync corosync-notifyd cpuspeed cups dnsmasq firstboot haldaemon halt htcacheclean httpd ip6tables iptables irqbalance kdump killall lvm2-lvmetad lvm2-monitor mdmonitor messagebus netconsole netfs network nfs nfslock ntpd ntpdate oddjobd pacemaker pacemaker_remote portreserve psacct quota_nld rdisc restorecond rngd rpcbind rpcgssd rpcidmapd rpcsvcgssd rsyslog sandbox saslauthd single smartd snmpd snmptrapd spawn-fcgi spice-vdagentd sshd sssd udev-post wdaemon winbind wpa_supplicant ypbind [root@node1 ~]#
OCF (Open Cluster Framework) – These are actually extended LSB cluster resource agents and usually support additional parameters
example:
[root@node1 ~]# crm ra list ocf ASEHAagent.sh AoEtarget AudibleAlarm CTDB ClusterMon Delay Dummy EvmsSCC Evmsd Filesystem HealthCPU HealthSMART ICP IPaddr IPaddr2 IPsrcaddr IPv6addr LVM LinuxSCSI MailTo ManageRAID ManageVE Pure-FTPd Raid1 Route SAPDatabase SAPInstance SendArp ServeRAID SphinxSearchDaemon Squid Stateful SysInfo SystemHealth VIPArip VirtualDomain WAS WAS6 WinPopup Xen Xinetd anything apache apache.sh asterisk clusterfs.sh conntrackd controld db2 dhcpd drbd drbd.sh eDir88 ethmonitor exportfs fio fs.sh iSCSILogicalUnit iSCSITarget ids ip.sh iscsi jboss ldirectord lvm.sh lvm_by_lv.sh lvm_by_vg.sh lxc mysql mysql-proxy mysql.sh named named.sh netfs.sh nfsclient.sh nfsexport.sh nfsserver nfsserver.sh nginx ocf-shellfuncs openldap.sh oracle oracledb.sh orainstance.sh oralistener.sh oralsnr pgsql ping pingd portblock postfix postgres-8.sh pound proftpd remote rsyncd rsyslog samba.sh script.sh scsi2reservation service.sh sfex slapd smb.sh svclib_nfslock symlink syslog-ng tomcat tomcat-5.sh tomcat-6.sh varnish vm.sh vmware zabbixserver [root@node1 ~]#
Cluster Resource Name: Cluster_Server
Resource Agent: ocf:heartbeat:IPaddr2 (get this info with “crm ra meta IPaddr2″)
IP address: 192.168.1.200
Netmask: 24
Monitor interval: 30 seconds (get this info with “crm ra meta IPaddr2″)
Run the command in one of the nodes:
crm configure primitive Cluster_Server ocf:heartbeat:IPaddr2 params ip=192.168.1.200 cidr_netmask="24" op monitor interval="30s"
Check Cluster Configuration:
[root@node1 ~]# crm configure show node node1 node node2 primitive Cluster_Server ocf::heartbeatIPaddr2 params ip="192.168.1.200" cidr_netmask="24" op monitor interval="30s" property $id="cib-bootstrap-options" dc..-version="1.1.10-14el6_52-368c726" cluster-infrastructure="classic openais (with plugin)" expected-quorum-votes="2" stonith-enabled="false" no-quorum-policy="ignore" [root@node1 ~]#
Cluster Status:
[root@node1 ~]# crm status Last updated: Thu Mar 6 11:20:52 2014 Last change: Thu Mar 6 09:57:49 2014 via cibadmin on node1 Stack: classic openais (with plugin) Current DC: node2 - partition with quorum Version: 1.1.10-14.el6_5.2-368c726 2 Nodes configured, 2 expected votes 1 Resources configured Online: [ node1 node2 ] Cluster_Server (ocf::heartbeat:IPaddr2): Started node2
Add Apache (httpd) Resource:
crm configure primitive Apache ocf:heartbeat:apache params configfile=/etc/httpd/conf/httpd.conf op monitor interval=1min
If you have any warning like this:
WARNING: Apache: default timeout 20s for start is smaller than the advised 40s WARNING: Apache: default timeout 20s for stop is smaller than the advised 60s
fix it with:
crm configure property default-action-timeout="240"
Check:
[root@node1 ~]# crm status Last updated: Thu Mar 6 11:39:44 2014 Last change: Thu Mar 6 11:39:36 2014 via cibadmin on node1 Stack: classic openais (with plugin) Current DC: node2 - partition with quorum Version: 1.1.10-14.el6_5.2-368c726 2 Nodes configured, 2 expected votes 2 Resources configured Online: [ node1 node2 ] Cluster_Server (ocf::heartbeat:IPaddr2): Started node2 Apache (ocf::heartbeat:apache): Started node1 [root@node1 ~]#
That means (http://192.168.1.200) should be live even if node1 or node down.
Deleting Apache (httpd) Resource
crm resource stop Apache crm configure delete Apache
Deleting IP Address Resource
crm resource stop Cluster_Server crm configure delete Cluster_Server
