Serviceguard basic question

[Srinikalyan]

I am going to halt the package using cmhaltpkg command. Once its completed, I am going to reboot the server keeping /etc/rc.config.d/cmcluster to set the AUTOSTART_CMCLD=1. I know the cluster and the nodes will be started automatically. Does the package alsobe started automatically or it should be done manually?
SG A11.17

Thanks,
Srini

[Michal Kapalka (mikap)]

hi,

check cmviewcl -v

and search for

PACKAGE STATUS STATE AUTO_RUN NODE
packagename1 up running enabled servernodx

AUTO_RUN (enable)

mikap

[melvyn burnard]

if you halt the cluster (cmhaltcl) then restart the cluster (cmruncl) this will automatically set the Global (AUTO_RUN) switching parameter to the value specified in the package configuration.
If that is set to YES, then the package wil automatically attempt to start on it's primary node.

If it is set to NO, then you will neeed to manuually start it

[Suraj K Sankari]

Hi,

If you set AUTOSTART_CMCLD=0 then when your server will up cluster will not start by that time you have to do manually.
cmruncl -v

it will start your cluster and package as well.

Suraj

[Srinikalyan]

My package sets Auto_run to yes.

I am supposed to install the patches(requires reboot) on both the nodes at the same time. Can i just run 1. cmhaltpkg pkg1 alone. 2.do the patch install on both the nodes. 3. reboot (May be both the nodes)

My question is if the passive server comes first will the package be started there?

[Asif Sharif]

Hi Srini,

Please read the below document for better understanding of "How Packages Run".

http://docs.hp.com/en/B3936-90140/ch03s04.html

Regards,
Asif Sharif

[Srinikalyan]

If the adoptive node first joined the cluster, will the package be started there in the adoptive node?

Thanks,
Srini

[melvyn burnard · Accepted solution]

I am supposed to install the patches(requires reboot) on both the nodes at the same time. Can i just run 1. cmhaltpkg pkg1 alone. 2.do the patch install on both the nodes. 3. reboot (May be both the nodes)

NO.
If you do this and the patch insatll requires a reboot, it does a kill -9 on all processes to perform th ereboot, and if the cmcld is still running you will get a Serviceguard TOC panic.

The safest way to do this is:
1. cmhaltnode on the adoptive node
2. swinstall the patches and let it reboot
3. make sure it rejoins the cluster ok.
4. move the package to the adoptive node
5. repeat steps 1-3 for the primary node
6. move the package back to the primary node
7. re-enable Global switching

or
1.cmhaltcl -fv
2.run the swinstall on both nodes at the same time
3. verify that both nodes come up ok
4. verfiy they start the cluster and the package ok.