topic Heartbeat - flatlined!! in Operating System - HP-UX

Heartbeat - flatlined!!

Larry Sybrandt — Tue, 01 Nov 2005 19:23:26 GMT

Help!! As i understand it, heartbeating over disk or over ip addresable fibre is not supported as a heartbeat in SG 11.16. Am I way off on this or dead (flatline) on?. Does it matter.
Thanks!!

Re: Heartbeat - flatlined!!

Kent Ostby — Tue, 01 Nov 2005 21:50:58 GMT

You could never do heartbeats over disk. That is a networking function.

You are right that Fibre networking is not supported for heartbeat or data in A.11.16.

Fibre channel disks are still supported in A.11.16.

See details here:

http://docs.hp.com/en/B3936-90079/index.html

Re: Heartbeat - flatlined!!

Steven E. Protter — Tue, 01 Nov 2005 23:06:44 GMT

Heartbeat is lost due to networking issues.

Cable on the heartbeat lan gets pulled or damaged.

NIC card fails.

Serial connection for serial heartbeat suffers the same problem.

Firewall or inetd.conf configuration cuts off networking.

Heartbeat does not use disk. A disk is used for cluster lock file to deal with contention issues if a two node cluster goes down.

SEP

Re: Heartbeat - flatlined!!

melvyn burnard — Wed, 02 Nov 2005 03:40:20 GMT

As per your previous post, you CANNOT use a disk of ANY kind for heartbeat.
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=970759
This is purely Network functionality.
Why are you trying to use a disk??

Re: Heartbeat - flatlined!!

Larry Sybrandt — Wed, 02 Nov 2005 09:02:21 GMT

Thanks - We're primarily AIX and HACMP does heartbeating over disk - write/reads from shared disk in addition to other types of heartbeating. We looking at an HP/Serviceguard solution and trying to compare features. Thanks - I will mention this issue no more!

Re: Heartbeat - flatlined!!

melvyn burnard — Wed, 02 Nov 2005 10:37:15 GMT

This may help explain the Cluster Lock Disk a bit better:
http://docs.hp.com/en/B3936-90070/B3936-90070.pdf

And you could take a look at
http://docs.hp.com/en/B3936-90079/B3936-90079.pdf

Page 62 discusses the heartbeats

Re: Heartbeat - flatlined!!

Larry Sybrandt — Thu, 03 Nov 2005 07:38:58 GMT

Thanks!