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Hi Jhon, Thanks for the replay.......... As you said from log that, node getting fenced (reboot) due to link is down.But the there is no problem with network connectivity. Actually when i relocate cluster application from one to another (oracle),the node who runs application is reboot. Both nodes are connected with cross cable for heartbeat link and that is why it is showing link down in logs. Regards, Viral Ahire ------------------------------------------------------------
On 05/11/2009 10:34 AM, Christopher Chen wrote: I hope you're planning to expand to least a 3 node cluster before you go into production. You know two node clusters are inherently unstable, right?I assume you've read the architectural overview of how the cluster suite achieves quorum. A cluster requires (n/2)+1 to continue to operate. If you restart or otherwise remove a machine from a two node cluster, you've lost quorum and by definition you've dissolved your cluster while you're in that state. Unless the special case two_node="1" is in use, and it is here:
<cman expected_votes="1" two_node="1"/>
This allows for maintaining quorum when only one vote is present. Fencing
is occurring because the link is dropping. See below:
I'm pretty sure the behavior you are describing is proper. Time flies like an arrow. Fruit flies like a banana. On May 11, 2009, at 4:08, "Viral .D. Ahire" <CISPLengineer hz ril com <mailto:CISPLengineer hz ril com>> wrote:Hi, I have configured two node cluster on redhat-5. now the problem is when i relocate,restart or stop, running cluster service between nodes (2 nos) ,the node get fenced and restart server . Other side, the server who obtain cluster service leave the cluster and it's cluster service (cman) stop automatically .so it is also fenced by other server. I observed that , this problem occurred while stopping cluster service (oracle). Please help me to resolve this problem. log messages and cluster.conf file are as given as below. ------------------------- /etc/cluster/cluster.conf ------------------------- <?xml version="1.0"?> <cluster config_version="59" name="new_cluster"> <fence_daemon post_fail_delay="0" post_join_delay="3"/> <clusternodes> <clusternode name="psfhost1" nodeid="1" votes="1"> <fence> <method name="1"> <device name="cluster1"/> </method> </fence> </clusternode> <clusternode name="psfhost2" nodeid="2" votes="1"> <fence> <method name="1"> <device name="cluster2"/> </method> </fence> </clusternode> </clusternodes> <cman expected_votes="1" two_node="1"/> <fencedevices> <fencedevice agent="fence_ilo" hostname="ilonode1" login="Administrator" name="cluster1" passwd="9M6X9CAU"/> <fencedevice agent="fence_ilo" hostname="ilonode2" login="Administrator" name="cluster2" passwd="ST69D87V"/> </fencedevices> <rm> <failoverdomains> <failoverdomain name="poy-cluster" ordered="0" restricted="0"> <failoverdomainnode name="psfhost1" priority="1"/> <failoverdomainnode name="psfhost2" priority="1"/> </failoverdomain> </failoverdomains> <resources> <ip address="10.2.220.2" monitor_link="1"/> <script file="/etc/init.d/httpd" name="httpd"/> <fs device="/dev/cciss/c1d0p3" force_fsck="0" force_unmount="0" fsid="52427" fstype="ext3" mountpoint="/app" name="app" options="" self_fence="0"/> <fs device="/dev/cciss/c1d0p4" force_fsck="0" force_unmount="0" fsid="39388" fstype="ext3" mountpoint="/opt" name="opt" options="" self_fence="0"/> <fs device="/dev/cciss/c1d0p1" force_fsck="0" force_unmount="0" fsid="62307" fstype="ext3" mountpoint="/data" name="data" options="" self_fence="0"/> <fs device="/dev/cciss/c1d0p2" force_fsck="0" force_unmount="0" fsid="47234" fstype="ext3" mountpoint="/OPERATION" name="OPERATION" options="" self_fence="0"/> <script file="/etc/init.d/orcl" name="Oracle"/> </resources> <service autostart="0" name="oracle" recovery="relocate"> <fs ref="app"/> <fs ref="opt"/> <fs ref="data"/> <fs ref="OPERATION"/> <ip ref="10.2.220.2"/> <script ref="Oracle"/> </service> </rm> </cluster> ---------------- ------- /var/log/messages ----------------------- following logs during relocate cluster service (oracle) between nodes. _*Node-1*_ 2 16:17:58 psfhost2 clurgmgrd[3793]: <notice> Starting stopped service service:oracle May 2 16:17:58 psfhost2 kernel: kjournald starting. Commit interval 5 seconds May 2 16:17:58 psfhost2 kernel: EXT3-fs warning: maximal mount count reached, running e2fsck is recommended May 2 16:17:58 psfhost2 kernel: EXT3 FS on cciss/c1d0p3, internal journal May 2 16:17:58 psfhost2 kernel: EXT3-fs: mounted filesystem with ordered data mode. May 2 16:17:58 psfhost2 kernel: kjournald starting. Commit interval 5 seconds May 2 16:17:58 psfhost2 kernel: EXT3-fs warning: maximal mount count reached, running e2fsck is recommended May 2 16:17:58 psfhost2 kernel: EXT3 FS on cciss/c1d0p4, internal journal May 2 16:17:58 psfhost2 kernel: EXT3-fs: mounted filesystem with ordered data mode. May 2 16:17:58 psfhost2 kernel: kjournald starting. Commit interval 5 seconds May 2 16:17:58 psfhost2 kernel: EXT3-fs warning: maximal mount count reached, running e2fsck is recommended May 2 16:17:58 psfhost2 kernel: EXT3 FS on cciss/c1d0p1, internal journal May 2 16:17:58 psfhost2 kernel: EXT3-fs: mounted filesystem with ordered data mode. May 2 16:17:59 psfhost2 kernel: kjournald starting. Commit interval 5 seconds May 2 16:17:59 psfhost2 kernel: EXT3-fs warning: maximal mount count reached, running e2fsck is recommended May 2 16:17:59 psfhost2 kernel: EXT3 FS on cciss/c1d0p2, internal journal May 2 16:17:59 psfhost2 kernel: EXT3-fs: mounted filesystem with ordered data mode. May 2 16:17:59 psfhost2 avahi-daemon[3661]: Registering new address record for 10.2.220.2 on eth0. May 2 16:18:00 psfhost2 in.rdiscd[5945]: setsockopt (IP_ADD_MEMBERSHIP): Address already in use May 2 16:18:00 psfhost2 in.rdiscd[5945]: Failed joining addresses May 2 16:18:11 psfhost2 clurgmgrd[3793]: <notice> Service service:oracle started May 2 16:19:17 psfhost2 kernel: bnx2: eth1 NIC Link is Down ^^^^^The cluster interconnect link went down, and thus this node could no longer communicate with the other node. May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] entering GATHER state from 11. May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] Saving state aru 1b high seq received 1b May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] Storing new sequence id for ring 90 May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] entering COMMIT state. May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] entering RECOVERY state. May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] position [0] member 10.2.220.6: May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] previous ring seq 140 rep 10.2.220.6 May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] aru 9 high delivered 9 received flag 1 May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] position [1] member 10.2.220.7: May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] previous ring seq 136 rep 10.2.220.7 May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] aru 1b high delivered 1b received flag 1 May 2 16:19:26 psfhost2 openais[3275]: [TOTEM] Did not need to originate any messages in recovery. May 2 16:19:26 psfhost2 openais[3275]: [CLM ] CLM CONFIGURATION CHANGE May 2 16:19:26 psfhost2 openais[3275]: [CLM ] New Configuration: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] r(0) ip(10.2.220.7) May 2 16:19:27 psfhost2 openais[3275]: [CLM ] Members Left: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] Members Joined: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] CLM CONFIGURATION CHANGE May 2 16:19:27 psfhost2 openais[3275]: [CLM ] New Configuration: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] r(0) ip(10.2.220.6) May 2 16:19:27 psfhost2 openais[3275]: [CLM ] r(0) ip(10.2.220.7) May 2 16:19:27 psfhost2 openais[3275]: [CLM ] Members Left: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] Members Joined: May 2 16:19:27 psfhost2 openais[3275]: [CLM ] r(0) ip(10.2.220.6) May 2 16:19:27 psfhost2 openais[3275]: [SYNC ] This node is within the primary component and will provide service. May 2 16:19:27 psfhost2 openais[3275]: [TOTEM] entering OPERATIONAL state. May 2 16:19:27 psfhost2 openais[3275]: [CLM ] got nodejoin message 10.2.220.6 May 2 16:19:27 psfhost2 openais[3275]: [CLM ] got nodejoin message 10.2.220.7 May 2 16:19:27 psfhost2 openais[3275]: [CPG ] got joinlist message from node 2 May 2 16:19:29 psfhost2 kernel: bnx2: eth1 NIC Link is Up, 1000 Mbps full duplex, receive & transmit flow control ON May 2 16:19:31 psfhost2 kernel: bnx2: eth1 NIC Link is Down May 2 16:19:35 psfhost2 kernel: bnx2: eth1 NIC Link is Up, 100 Mbps full duplex, receive & transmit flow control ON May 2 16:19:42 psfhost2 kernel: dlm: connecting to 1 May 2 16:20:36 psfhost2 ccsd[3265]: Update of cluster.conf complete (version 57 -> 59). May 2 16:20:43 psfhost2 clurgmgrd[3793]: <notice> Reconfiguring May 2 16:21:15 psfhost2 clurgmgrd[3793]: <notice> Stopping service service:oracle May 2 16:21:25 psfhost2 avahi-daemon[3661]: Withdrawing address record for 10.2.220.7 on eth0. May 2 16:21:25 psfhost2 avahi-daemon[3661]: Leaving mDNS multicast group on interface eth0.IPv4 with address 10.2.220.7. May 2 16:21:25 psfhost2 avahi-daemon[3661]: Joining mDNS multicast group on interface eth0.IPv4 with address 10.2.220.2. May 2 16:21:25 psfhost2 clurgmgrd: [3793]: <err> Failed to remove 10.2.220.2 May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] entering RECOVERY state. May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] position [0] member 127.0.0.1: May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] previous ring seq 144 rep 10.2.220.6 May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] aru 31 high delivered 31 received flag 1 May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] Did not need to originate any messages in recovery. May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] Sending initial ORF token May 2 16:21:40 psfhost2 openais[3275]: [CLM ] CLM CONFIGURATION CHANGE May 2 16:21:40 psfhost2 openais[3275]: [CLM ] New Configuration: May 2 16:21:40 psfhost2 openais[3275]: [CLM ] r(0) ip(127.0.0.1) May 2 16:21:40 psfhost2 openais[3275]: [CLM ] Members Left: May 2 16:21:40 psfhost2 openais[3275]: [CLM ] r(0) ip(10.2.220.7) May 2 16:21:40 psfhost2 openais[3275]: [CLM ] Members Joined: May 2 16:21:40 psfhost2 openais[3275]: [CLM ] CLM CONFIGURATION CHANGE May 2 16:21:40 psfhost2 openais[3275]: [CLM ] New Configuration: May 2 16:21:40 psfhost2 openais[3275]: [CLM ] r(0) ip(127.0.0.1) May 2 16:21:40 psfhost2 openais[3275]: [CLM ] Members Left: May 2 16:21:40 psfhost2 openais[3275]: [CLM ] Members Joined: May 2 16:21:40 psfhost2 openais[3275]: [SYNC ] This node is within the primary component and will provide service. May 2 16:21:40 psfhost2 openais[3275]: [TOTEM] entering OPERATIONAL state. May 2 16:21:40 psfhost2 openais[3275]: [MAIN ] Killing node psfhost2 because it has rejoined the cluster without cman_tool join May 2 16:21:40 psfhost2 openais[3275]: [CMAN ] cman killed by node 2 because we rejoined the cluster without a full restart May 2 16:21:40 psfhost2 fenced[3291]: cman_get_nodes error -1 104 May 2 16:21:40 psfhost2 kernel: clurgmgrd[3793]: segfault at 0000000000000000 rip 0000000000408c4a rsp 00007fff3c4a9e20 error 4 May 2 16:21:40 psfhost2 fenced[3291]: cluster is down, exiting May 2 16:21:40 psfhost2 groupd[3283]: cman_get_nodes error -1 104 May 2 16:21:40 psfhost2 dlm_controld[3297]: cluster is down, exiting May 2 16:21:40 psfhost2 gfs_controld[3303]: cluster is down, exiting May 2 16:21:40 psfhost2 clurgmgrd[3792]: <crit> Watchdog: Daemon died, rebooting... May 2 16:21:40 psfhost2 kernel: dlm: closing connection to node 1 May 2 16:21:40 psfhost2 kernel: dlm: closing connection to node 2 May 2 16:21:40 psfhost2 kernel: md: stopping all md devices. 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