Sould I shut down my cluster clients if I want to install patch??

[winding]

One of my cluster client had already install PHNE_18979,but I need to install the patch on another client.

Do I have to shut down my all cluster clients if I want to install the patch PHNE_18979 on one of my cluster client?

Because the application on all my cluster clients are all very important,so I need to keep them running all time.But if I don't install the patch,the version of sendmail on my clients can't be uniform.

who can tell me how to do it by detail?

I have already download the patch ,and create the .depot file on my client.

And tell me if I need to modify any files.....

Thanks a lot!

[Ravi_8]

not necessary

[Saurabh_3]

Dear ,
According to me, You should Shift the package running on the machine on which the patch is to be installed to the Adoptive node.By using command
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cmrunpkg
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Then remove the machine from cluster using command
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cmhaltnode
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your applications will keep on running without any problem. Now install the patch using
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swinstall
--------------
It may ask u to rebuild the kernel. and restart the node.Now if the node is configurred to automatically join the running cluster it will join the cluster automatically.Best is it should not join the cluster automatically. Rather you should do it manually.using command
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cmrunnode
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then again u shift the default package previously running on the node by using command
----------------
cmrunpkg
-----------------

Regards Gaurav

[winding]

Do you mean I should run application A on host B,and install patch on host A?
Could I don't stop node A and only switch package A run on host B??

Do I need to stop sendmail on host A for this is a sendmail patch?

But DO I NEED TO MODIFY ANY FILES?Or I can just ftp host B's sendmail.cf file to host A??

Thanks