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1.2. Installing Pacemaker configuration tools

You can use the following yum install command to install the Red Hat High Availability Add-On software packages along with all available fence agents from the High Availability channel. 
# yum install pcs pacemaker fence-agents-all
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Alternately, you can install the Red Hat High Availability Add-On software packages along with only the fence agent that you require with the following command. 
# yum install pcs pacemaker fence-agents-model
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The following command displays a listing of the available fence agents. 
# rpm -q -a | grep fence
fence-agents-rhevm-4.0.2-3.el7.x86_64
fence-agents-ilo-mp-4.0.2-3.el7.x86_64
fence-agents-ipmilan-4.0.2-3.el7.x86_64
...
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The lvm2-cluster and gfs2-utils packages are part of ResilientStorage channel. You can install them, as needed, with the following command. 
# yum install lvm2-cluster gfs2-utils
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Warning

After you install the Red Hat High Availability Add-On packages, you should ensure that your software update preferences are set so that nothing is installed automatically. Installation on a running cluster can cause unexpected behaviors.
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