[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [Linux-cluster] RHEL/CentOS-6 HA NFS Configuration Question



To All,

Looks like I got nicked by Occam's Razor when I "simplified" my cluster config file... :-)   A "less simplified" version is below.

My question still stands, however.  What does "cluster.conf" look like if you're trying to deploy a "highly available" NFS configuration.  And, again, by "highly available" I mean that NFS Clients never get the dreaded "stale nfs file handle" message unless the entire cluster has failed.

-RZ

p.s.  A better, but still simplified, cluster.conf for EL5.
<?xml version="1.0"?>
<cluster alias="ha-nfs-el5" config_version="357" name="ha-nfs-el5">
    <fence_daemon clean_start="0" post_fail_delay="0" post_join_delay="3"/>
    <clusternodes>
    	    <clusternode name="node01.arlut.utexas.edu" nodeid="1" votes="1">
    		    <fence>
    			    <method name="1">
    				    <device name="node01-ilo"/>
    			    </method>
    			    <method name="2">
    				    <device name="sanbox01" port="0"/>
    			    </method>
    		    </fence>
    	    </clusternode>
    	    <clusternode name="node02.arlut.utexas.edu" nodeid="2" votes="1">
    		    <fence>
    			    <method name="1">
    				    <device name="node02-ilo"/>
    			    </method>
    			    <method name="2">
    				    <device name="sanbox02" port="0"/>
    			    </method>
    		    </fence>
    	    </clusternode>
    	    <clusternode name="node03.arlut.utexas.edu" nodeid="3" votes="1">
    		    <fence>
    			    <method name="1">
    				    <device name="node03-ilo"/>
    			    </method>
    			    <method name="2">
    				    <device name="sanbox03" port="0"/>
    			    </method>
    		    </fence>
    	    </clusternode>
    </clusternodes>
    <cman/>
    <fencedevices>
    	    <fencedevice agent="fence_sanbox2" ipaddr="sanbox01.arlut.utexas.edu" login="admin" name="sanbox01" passwd="password"/>
    	    <fencedevice agent="fence_sanbox2" ipaddr="sanbox02.arlut.utexas.edu" login="admin" name="sanbox02" passwd="password"/>
    	    <fencedevice agent="fence_sanbox2" ipaddr="sanbox03.arlut.utexas.edu" login="admin" name="sanbox03" passwd="password"/>
    	    <fencedevice agent="fence_ilo" hostname="node01-ilo" login="Administrator" name="node01-ilo" passwd="DUMMY"/>
    	    <fencedevice agent="fence_ilo" hostname="node02-ilo" login="Administrator" name="node02-ilo" passwd="DUMMY"/>
    	    <fencedevice agent="fence_ilo" hostname="node03-ilo" login="Administrator" name="node03-ilo" passwd="DUMMY"/>
    </fencedevices>
    <rm>
    	    <failoverdomains>
    		    <failoverdomain name="nfs1-domain" nofailback="1" ordered="1" restricted="1">
    			    <failoverdomainnode name="node01.arlut.utexas.edu" priority="1"/>
    			    <failoverdomainnode name="node02.arlut.utexas.edu" priority="2"/>
    			    <failoverdomainnode name="node03.arlut.utexas.edu" priority="3"/>
    		    </failoverdomain>
    		    <failoverdomain name="nfs2-domain" nofailback="1" ordered="1" restricted="1">
    			    <failoverdomainnode name="node01.arlut.utexas.edu" priority="3"/>
    			    <failoverdomainnode name="node02.arlut.utexas.edu" priority="1"/>
    			    <failoverdomainnode name="node03.arlut.utexas.edu" priority="2"/>
    		    </failoverdomain>
    		    <failoverdomain name="nfs3-domain" nofailback="1" ordered="1" restricted="1">
    			    <failoverdomainnode name="node01.arlut.utexas.edu" priority="2"/>
    			    <failoverdomainnode name="node02.arlut.utexas.edu" priority="3"/>
    			    <failoverdomainnode name="node03.arlut.utexas.edu" priority="1"/>
    		    </failoverdomain>
    	    </failoverdomains>
    	    <resources>
    		    <ip address="192.168.1.1" monitor_link="1"/>
    		    <ip address="192.168.1.2" monitor_link="1"/>
    		    <ip address="192.168.1.3" monitor_link="1"/>
    		    <fs device="/dev/cvg00/volume01" force_fsck="0" force_unmount="1" fsid="49388" fstype="ext3" mountpoint="/lvm/volume01" name="volume01" self_fence="0"/>
    		    <fs device="/dev/cvg00/volume02" force_fsck="0" force_unmount="1" fsid="58665" fstype="ext3" mountpoint="/lvm/volume01" name="volume01" self_fence="0"/>
    		    <fs device="/dev/cvg00/volume03" force_fsck="0" force_unmount="1" fsid="61028" fstype="ext3" mountpoint="/lvm/volume01" name="volume01" self_fence="0"/>
    		    <nfsclient allow_recover="1" name="local-subnet" options="rw,insecure" target="192.168.1.0/24"/>
    	    </resources>
    	    <service autostart="1" domain="nfs1-domain" exclusive="0" name="nfs1" nfslock="1" recovery="relocate">
    		    <ip ref="192.168.1.1">
    			    <fs __independent_subtree="1" ref="volume01">
    				    <nfsexport name="nfs-volume01">
    					    <nfsclient name=" " ref="local-subnet"/>
    				    </nfsexport>
    			    </fs>
    		    </ip>
    	    </service>
    	    <service autostart="1" domain="nfs2-domain" exclusive="0" name="nfs2" nfslock="1" recovery="relocate">
    		    <ip ref="192.168.1.2">
    			    <fs __independent_subtree="1" ref="volume02">
    				    <nfsexport name="nfs-volume02">
    					    <nfsclient name=" " ref="local-subnet"/>
    				    </nfsexport>
    			    </fs>
    		    </ip>
    	    </service>
    	    <service autostart="1" domain="nfs3-domain" exclusive="0" name="nfs3" nfslock="1" recovery="relocate">
    		    <ip ref="192.168.1.3">
    			    <fs __independent_subtree="1" ref="volume03">
    				    <nfsexport name="nfs-volume03">
    					    <nfsclient name=" " ref="local-subnet"/>
    				    </nfsexport>
    			    </fs>
    		    </ip>
    	    </service>
    </rm>
</cluster>
-- 
Randy Zagar                               Sr. Unix Systems Administrator
E-mail: zagar arlut utexas edu            Applied Research Laboratories
Phone: 512 835-3131                       Univ. of Texas at Austin

Attachment: smime.p7s
Description: S/MIME Cryptographic Signature


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]