service gaurd parameter member_timeout

[dudharkar chandra]

I am new on HP serviceguard. Kindly advise how to reduce member_timeout parameter from 30 second to default 14 second. Hp VxVm is used. advise can we do change of parameter online and how to make effective after change.

[Turgay Cavdar]

You should change the directive in the cluster config file:
MEMBER_TIMEOUT 14000000

then you should cmcheckconf/cmapplyconf.

The parameter can be changed online (for A.11.19) Change MEMBER_TIMEOUT (Cluster can be running, except in CVM environment;see the NOTE below this table.)

You should check "Managing Serviceguard" document for details.
Regards.

http://h20000.www2.hp.com/bizsupport/TechSupport/DocumentIndex.jsp?lang=en&cc=us&taskId=101&prodClassId=10008&contentType=SupportManual&docIndexId=64255&prodTypeId=18964&prodSeriesId=4162060

[SoorajCleris]

Hi,

Apart from technical,
Is there typo in your name ?? ( s ->d) ?

Which is the version of service guard you are using? Earlier version this parameter was different.

You can change this parameter online.

1.The default quorum server timeout is calculated primarily from MEMBER_TIMEOUT parameter. For cluster of up to 4 nodes it is 0.2*MEMBER_TIMEOUT. It increases as number of nodes increases and reaches to 0.5*MEMBER_TIMEOUT for 16 nodes




# MEMBER_TIMEOUT cannot be set below 14 seconds if the network interface
type is Ethernet, or 22 seconds if the network interface type is InfiniBand (HP-UX only).
Note that a system hang or network load spike whose duration exceeds MEMBER_TIMEOUT will result in one or more node failures. The maximum value recommended for MEMBER_TIMEOUT is 60000000 (60 seconds).



To change the parameter, do a #cmgetconf

edit the value in ascii file

#cmapplyconf

The new parameter will be effective.


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