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[LDM #QZZ-219946]: LDM product queue vanishes

Mike,

Deletion of inter-process communication objects on user logout by systemd(8), 
eh? I knew there was a reason some developers don't like systemd(8).

Sorry you were the guinea pig on this one. At least your sacrifice won't be in 
vain. See <https://github.com/Unidata/LDM/issues/62>.

And thanks a bunch for sending this in.

> I know it's been a little while but wanted to provide an update.  Two
> things actually...
> 
> First, we haven't seen any issue with the product queue vanishing
> since we added RemoveIPC=no to /etc/systemd/logind.conf, that seems to
> have done the trick.
> 
> Second, it appears as though that same edit may be the solution to an
> unrelated problem I ran into on another server.  On this particular
> setup, I came in one day to find we weren't answering any downstream
> requests.  Errors in the log file brought me to the following support
> thread, seemingly identical symptoms:
> https://www.unidata.ucar.edu/support/help/MailArchives/ldm/msg08123.html.
> I added RemoveIPC=no to /etc/systemd/logind.conf here as well, and we
> haven't seen any issues since.  FWIW this was a relatively new
> installation on Ubuntu 16.04, only online for a short while, and the
> product queue which appeared unharmed resides on disk there.  A clean
> LDM restart would restore operation, but believe "RemoveIPC=no" is a
> more permanent solution.  Thought you'd like to know.

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: QZZ-219946
Department: Support LDM
Priority: Normal
Status: Closed
===================
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