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| garbagedook |
 Posted: Wed Jul 29, 2009 11:39 am Post subject: Does changing a security exit require a restart? |
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Novice
Joined: 15 May 2006
Posts: 11
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Hi,
I have a channel security exit in /var/mqm/exits64 on Solaris.
Its loaded and works fine.
If I recompile the exit (make some sort of change) and replace the file, do I need to restart the queue manager?
What is the best practice for replacing an exit?
Any thoughts or suggestions would be most helpful, thanks! |
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| RogerLacroix |
| Posted: Wed Jul 29, 2009 2:52 pm Post subject: Re: Does changing a security exit require a restart? |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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| garbagedook wrote: |
| If I recompile the exit (make some sort of change) and replace the file, do I need to restart the queue manager? |
You need to stop ALL channels using the security exit or simply stop the listener.
i.e.
| Code: |
| endmqlsr -f -m QMGR_NAME |
Regards,
Roger Lacroix
Capitalware Inc.
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| gbaddeley |
| Posted: Wed Jul 29, 2009 3:47 pm Post subject: Re: Does changing a security exit require a restart? |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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| garbagedook wrote: |
| ...If I recompile the exit (make some sort of change) and replace the file, do I need to restart the queue manager? |
No, you don't need to restart the qmgr.
Message Channel Agents for Running channels that use the exit will not immediately use the new copy, as they will have their own private copy loaded in their memory. However, next time the channel starts the MCA will load a fresh copy of the exit.
| Quote: |
| What is the best practice for replacing an exit? |
It depends what level of quality change control you wish to apply. If its a dev environment and you are the only user, just copy the new exit library file over the old one, and restart the affected channels.
If there are multiple users, you should coordinate an outage to the channel(s), take a backup copy of the exit, copy in the new one, do a PVT, and then inform the other users that all is OK.
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| PeterPotkay |
| Posted: Thu Jul 30, 2009 1:49 pm Post subject: |
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Poobah
Joined: 15 May 2001
Posts: 7722
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Roger, don't understand the "...or stop the Listener..." part. All that will do is prevent new channels from starting while you swap in the new exit. Existing running instances of channels that may have the exit loaded will not pick up the changed exit via a stopped listener.
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| JosephGramig |
| Posted: Fri Jul 31, 2009 11:26 am Post subject: |
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Grand Master
Joined: 09 Feb 2006
Posts: 1244
Location: Gold Coast of Florida, USA
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if you stop the channel into the inactive status, then it will restart at the next msg ready to go...
Always make a backup and test!  |
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| RogerLacroix |
| Posted: Wed Aug 12, 2009 8:50 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3264
Location: London, ON Canada
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| PeterPotkay wrote: |
| Roger, don't understand the "...or stop the Listener..." part. All that will do is prevent new channels from starting while you swap in the new exit. Existing running instances of channels that may have the exit loaded will not pick up the changed exit via a stopped listener. |
Yes, you are right. I thought forcing the listener to stop would stop active channels. I just tried it and the running channels kept on running.
Hence, you need to stop all channels using the security exit or completely stop the queue manager.
Regards,
Roger Lacroix
Capitalware Inc.
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| shashivarungupta |
| Posted: Wed Aug 12, 2009 1:22 pm Post subject: Re: Does changing a security exit require a restart? |
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Grand Master
Joined: 24 Feb 2009
Posts: 1343
Location: Floating in space on a round rock.
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| RogerLacroix wrote: |
| garbagedook wrote: |
| If I recompile the exit (make some sort of change) and replace the file, do I need to restart the queue manager? |
You need to stop ALL channels using the security exit or simply stop the listener.
i.e.
| Code: |
| endmqlsr -f -m QMGR_NAME |
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Most of the times, I used to stop the channels and then make the changes. and Once I did stop the queue manager while making the changes to exit or exit64.
It works without fault. I did that..quite a few times, under Roger's guidance. Thanks.
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| shashivarungupta |
| Posted: Wed Aug 12, 2009 1:29 pm Post subject: |
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Grand Master
Joined: 24 Feb 2009
Posts: 1343
Location: Floating in space on a round rock.
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And the most interesting one was..while upgrading the capitalware mqausx and got to take care of the permissions of the files under /var/mqm/exits/
 
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| bruce2359 |
| Posted: Wed Aug 12, 2009 9:11 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
| ...and got to take care of the permissions of the files under /var/mqm/exits/ |
and by take care, you mean what?
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| shashivarungupta |
| Posted: Thu Aug 13, 2009 5:41 am Post subject: |
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Grand Master
Joined: 24 Feb 2009
Posts: 1343
Location: Floating in space on a round rock.
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| bruce2359 wrote: |
| Quote: |
| ...and got to take care of the permissions of the files under /var/mqm/exits/ |
and by take care, you mean what? |
I mean, keep the track which file is to be given which level of access. Some files are there which need root level access and some not. (This is what people generally miss out accidentally while upgrading the package.)
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