Hi Deval, If you are using iLO fencing, you could try the latest fence package (1.32.10). I have seen a similar problem, and it is because recent iLO firmware versions behave a little different (they try to make a soft restart instead of a hard reboot). At least one of the nodes should get properly killed, and the surviving one should keep all services. Hope this helps. Regards, Javier > -----Original Message----- > From: linux-cluster-bounces@xxxxxxxxxx > [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Deval > kulshrestha > Sent: Saturday, February 25, 2006 6:33 AM > To: 'linux clustering' > Subject: RE: Network failure results cluster > environmentunstable & fragile > > > Please help me to resolve my problem > > > If network goes off on node1, and service which were not > running on node1 are started by node1 with shared storage > mount point, which was already running on node 2 but both of > these nodes are not able to communicate to each other, > node2 anyway already running the same service with shared > storage mount point. Because of Fencing both of these nodes > try to kill each other. Both of they got hanged up at > "Stoping Cluster manager Services.".In /var/log/messages, it > shows fencing s1, fence successful. > > If we disable fencing than > > If network comes back nodes don't synchronize with each > other. Shared storage mount point is available to both the > servers. If they try to access storage at same storage gives > IO errors. Hence this entire setup become very unstable, fragile. > > --- Deval kulshrestha > <deval.kulshrestha@xxxxxxxxxxxxxxx> wrote: > > > Hi > > > > I am struggling to get some help on following > > configuration. This setup is > > intended to put live in a data center for 24 x 7 > > x365, any issue that makes > > my environment unstable is very critical here. > > > > My HA Cluster Setup details > > > > 1. HP DL 360 G4p Server 2nos. > > 2. HP MSA 500 G2 (SAN) 1nos. > > 3. RedHat Enterprise Linux 4 ES > > 4. Red Hat Cluster Suite 4 > > > > > > Server does have a HP SCSI HBA. MSA 500G2 is a scsi > > based SAN. Both of these > > server are connected to SAN using SCSI VHDCI cable. > > I used a network switch > > to establish network connectivity for the server. > > created a disk array of > > three HDD on SAN with two logical volumes than I > > have installed RHEL 4 > > Update 1 on both server(Servers are configured with > > RAID 1) than installed > > all HP drivers and management agents. After server > configuration and > > OS installation I have installed Red Hat Cluster Suite > > v 4 on both the machine. > > > > > > > > Than I have configured Cluster using Cluster > > Configuration Manager. Added > > member hosts, configured fence device and assigned > > to member host(HP iLO is > > certified as an fence device), Configured Failover > > domain with node > > priority, configured resources such as floating IP > > address, File System, > > Script, than configured service which need to be run > > in HA mode. > > > > > > > > After configuring this I have tested with various > > scenario HA is working > > properly, when ever powered off any machine , > > services fail over on > > available node. > > > > Problem: > > > > > > If network goes off on node1, and service which were > > not running on node1 > > are started by node1 with shared storage mount > > point, which was already > > running on node 2 but both of these nodes are not > > able to communicate to > > each other, node2 anyway already running the same > > service with shared > > storage mount point. Because of Fencing both of > > these nodes try to kill each > > other. Both of they got hanged up at "Stoping > > Cluster manager Services.".In > > /var/log/messages, it shows fencing s1, fence > > successful. > > > > If we disable fencing than > > > > If network comes back nodes don't synchronize with > > each other. Shared > > storage mount point is available to both the > > servers. If they try to access > > storage at same storage gives IO errors. Hence this > > entire setup become very > > unstable, fragile. > > > > > > > > > > > > > > > > > > > > > > > > > > > > With Regard > > > > Deval > > > > Progression Infonet Pvt. Ltd. > > 55, Independent Electronic Modules, > > Sector - 18, Electronic City, > > Gurgaon - 122015 > > > > India > > Tel : - 0124 - 2455070, Ext. 215, Fax: > > 91-124-2398647 > > Mobile : - 98186 -82509 > > URL : - www.progression.com > > > > > > > > > =========================================================== > > Privileged or confidential information may be > > contained > > in this message. If you are not the addressee > > indicated > > in this message (or responsible for delivery of the > > message to such person), please delete this message > > and > > kindly notify the sender by an emailed reply. > > Opinions, > > conclusions and other information in this message > > that > > do not relate to the official business of > > Progression > > and its associate entities shall be understood as > > neither > > given nor endorsed by them. > > > > > > > ------------------------------------------------------------- > > Progression Infonet Private Limited, Gurgaon > > (Haryana), India > > > -- > > > > Linux-cluster@xxxxxxxxxx > > > https://www.redhat.com/mailman/listinfo/linux-cluster > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com > > > > =========================================================== > Privileged or confidential information may be contained > in this message. If you are not the addressee indicated > in this message (or responsible for delivery of the > message to such person), please delete this message and > kindly notify the sender by an emailed reply. Opinions, > conclusions and other information in this message that do not > relate to the official business of Progression and its > associate entities shall be understood as neither given nor > endorsed by them. > > > ------------------------------------------------------------- > Progression Infonet Private Limited, Gurgaon (Haryana), India > > -- > > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > > > > =========================================================== > Privileged or confidential information may be contained > in this message. If you are not the addressee indicated > in this message (or responsible for delivery of the > message to such person), please delete this message and > kindly notify the sender by an emailed reply. Opinions, > conclusions and other information in this message that do not > relate to the official business of Progression and its > associate entities shall be understood as neither given nor > endorsed by them. > > > ------------------------------------------------------------- > Progression Infonet Private Limited, Gurgaon (Haryana), India > > > -- > > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
