HP Serviceguard, formerly known as MC/ServiceGuard, is a high-availability cluster software produced by HP that runs on HP-UX and Linux.
This document will guide you to how to install and configure serviceguard cluster on Linux with 2 nodes.
Refer the link for HP Serviceguard Cluster Package Configuration.
Also if you want to understand the Basic High-Availability Cluster Concepts, You can refer this link Click here
If you are interested in learning, Request you to go through the below recommended tutorial.
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My Setup:
Primary Node Server :
Hostname : selva1.learnitguide.net
OS : RHEL 5.4
Node 1 Lan Port 1 : 10.10.10.10 (Connected to swtich for administrator use to manage the server)
Node 1 Lan Port 2 : 172.19.1.10 (Connected directly to Node 2 Lan Port 2 to have a heartbeat link)
MC Service GUARD : Evaluation version 11.19
Secondary Node Server :
Hostname : selva2.learnitguide.net
OS : RHEL 5.4
Node 2 Lan Port 1 : 10.10.10.11 (Connected to swtich for administrator use to manage the server)
Node 2 Lan Port 2 : 172.19.1.11 (Connected directly to Node 1 Lan Port 2 to have a heartbeat link)
MC Service GUARD : Evaluation version 11.19
Download Service guard for linux from HP Site and Install those packages from iso images using rpm -ivh.
After installing the serviceguard-A.11.19.01-0.rhel5.i386.rpm, that will give you the warning as identd daemon not running on this node. So run the identd service
After starting the service and make entry to your path settings in your profile file to find out the Service Guard clusters command, else you need to mention the command path.
If you see your .bash_profile file from your home directory PATH variable will be there as default
So append it as
And run the command as
All commands from service guard will be available if you typed just cm and pressing tab twice.
Config file is /etc/cmcluster.conf
Default location will be /usr/local/cmcluster. Do these above installation steps on both the nodes.
Make sure you have a proper network configuration with at least two seprerated subnets for Heartbeats or one seperated subnet and make an host entries in /etc/hosts file, because we will define in all cluster config files using the hostname so it should resolve by hostname,
Go to the default config location for Service Guard /usr/local/cmcluster/conf.
Create the node list,
like,
Plan for lock lun if you are using 2 node cluster by iSCSI or FC and make a lun
available to the host selva1 and selva2.
Else you can make a Quorum server by below,
Mount the SGLX CD and install the RPM,
Authorize hosts to connect,
like,
Add to init,
like,
apply,
Check it's up,
note there should be two listening ports,
Note. 1238 corresponds to the registered "hacl-qs" service.
In case it says "permission denied", just kill the processes,
they will restart automaticly and reread the "qs_authfile".
Do the same setup in the second node selva2.
Go to the directory
Change your cluster name as you want and STATIONARY IP and HEARTBEAT IP Correctly.
Check you config file for any errors, if you found any errors, try to correct it.
Apply the configuration file,
Check the cluster status,
Both the nodes should be up. If everything goes well, now you can go for creating the cluster packages for your database or application. Package Configuration will give you in next updates.
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Primary Node Server :
Hostname : selva1.learnitguide.net
OS : RHEL 5.4
Node 1 Lan Port 1 : 10.10.10.10 (Connected to swtich for administrator use to manage the server)
Node 1 Lan Port 2 : 172.19.1.10 (Connected directly to Node 2 Lan Port 2 to have a heartbeat link)
MC Service GUARD : Evaluation version 11.19
Secondary Node Server :
Hostname : selva2.learnitguide.net
OS : RHEL 5.4
Node 2 Lan Port 1 : 10.10.10.11 (Connected to swtich for administrator use to manage the server)
Node 2 Lan Port 2 : 172.19.1.11 (Connected directly to Node 1 Lan Port 2 to have a heartbeat link)
MC Service GUARD : Evaluation version 11.19
How to Configure HP ServiceGuard cluster configuration on LINUX
Make sure this package is NOT installed, If it is installed , remove it.rpm -e authd
Download Service guard for linux from HP Site and Install those packages from iso images using rpm -ivh.
[root@selva1 IA32]# rpm –ivh SGLic-6.0-SG11.19.rhel5.i386.rpm
[root@selva1 IA32]# rpm –ivh sg_pidentd-3.0.19-2.i386.rpm
[root@selva1 IA32]# rpm –ivh serviceguard-A.11.19.01-0.rhel5.i386.rpm
After installing the serviceguard-A.11.19.01-0.rhel5.i386.rpm, that will give you the warning as identd daemon not running on this node. So run the identd service
[root@selva1 IA32]# /etc/init.d/identd start
[root@selva1 IA32]# chkconfig identd on
After starting the service and make entry to your path settings in your profile file to find out the Service Guard clusters command, else you need to mention the command path.
If you see your .bash_profile file from your home directory PATH variable will be there as default
PATH=$PATH:$HOME/bin
So append it as
PATH=$PATH:$HOME/bin:/usr/local/cmcluster/bin
And run the command as
[root@selva1 IA32]# source /root/.bashrc
All commands from service guard will be available if you typed just cm and pressing tab twice.
Config file is /etc/cmcluster.conf
Default location will be /usr/local/cmcluster. Do these above installation steps on both the nodes.
Configure ServiceGuard Cluster Nodes
Make sure you have a proper network configuration with at least two seprerated subnets for Heartbeats or one seperated subnet and make an host entries in /etc/hosts file, because we will define in all cluster config files using the hostname so it should resolve by hostname,
10.10.10.10 selva1.learnitguide.net selva1
172.19.1.10 hb1
10.10.10.11 selva2.learnitguide.net selva2
172.19.1.11 hb2
Go to the default config location for Service Guard /usr/local/cmcluster/conf.
Create the node list,
[root@selva1 IA32]# vi cmclnodelist
like,
selva1 root
selva2 root
Plan for lock lun if you are using 2 node cluster by iSCSI or FC and make a lun
available to the host selva1 and selva2.
[root@selva1 IA32]# fdisk –l
My lock lun is /dev/sdb
Else you can make a Quorum server by below,
Configure Quorum server on Linux
Mount the SGLX CD and install the RPM,
cd x86_x86-64/RedHat5/Serviceguard/IA32
rpm -ivh qs-A.02.00.04-0.rhel5.i386.rpm
Authorize hosts to connect,
vi /usr/local/qs/conf/qs_authfile
like,
selva1.learnitguide.net
selva2.learnitguide.net
Add to init,
mkdir -p /var/log/qs
vi /etc/inittab
like,
qs:345:respawn:/usr/local/qs/bin/qs >/var/log/qs/qs 2>/var/log/qs/qs_error
apply,
telinit q
Check it's up,
ps aux | grep qs
note there should be two listening ports,
netstat -an --inet
e.g.,
...
tcp 0 0 0.0.0.0:60277 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:1238 0.0.0.0:* LISTEN
...
Note. 1238 corresponds to the registered "hacl-qs" service.
In case it says "permission denied", just kill the processes,
pkill qsc
they will restart automaticly and reread the "qs_authfile".
Do the same setup in the second node selva2.
Setting up ServiceGuard Cluster Configuration
Go to the directory
[root@selva1 IA32]# cd /usr/local/cmcluster/conf
[root@selva1 IA32]# cmquerycl -v -n selva1 –n selva2 -C mycluster.ascii
[root@selva1 IA32]# vi mycluster.ascii
Change your cluster name as you want and STATIONARY IP and HEARTBEAT IP Correctly.
Check you config file for any errors, if you found any errors, try to correct it.
[root@selva1 IA32]# cmcheckconf –v –C mycluster.ascii
Apply the configuration file,
[root@selva1 IA32]# cmapplyconf –v –C mycluster.ascii
Check the cluster status,
[root@selva1 IA32]# cmviewcl
Both the nodes should be up. If everything goes well, now you can go for creating the cluster packages for your database or application. Package Configuration will give you in next updates.
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