On Mon, Nov 28, 2016 at 10:59:21AM +0000, Mike Grant wrote: > Writing as the original reporter of that bug, here's a bit more info.. > > On 28/11/16 10:34, William Hay wrote: > > What version of grid engine are you using? > > The bug and the comments below refer to the Fedora packaged version, > which will be quite a bit behind SoGE. Yes, we plan to try out SoGE on > our next OS update. > > > Does setting SGE_ND not prevent forking for you? > > There is an issue that shadowd (at least in the Fedora packaged version) > still daemonises even with SGE_ND set. In order to prevent that, one > also has to set SGE_DEBUG_LEVEL="1 0 0 0 0 0 0 0" (minimal?), which > results in a lot of spam if that node becomes the master. Even > filtering this doesn't help a lot, as it burns a lot of CPU printing and > dropping the lines.
SGE_ND is documented in the qmaster man page but not the shadowd man page so I guess that is "working as designed". Since SGE_DEBUG_LEVEL prevents daemonisation it would probably be fairly simple to make SGE_ND work as well. You could submit a request for that as an enhancement bug to Dave's bugtracker. An alternative/workaround might be to use a generic HA solution rather than the shadow_master daemon. Pacemaker claims to work with systemd. > > If that's still true in SoGE, making it respect SGE_ND would be a nice fix. > > > If setting SGE_ND does prevent forking and the problem is exessive log > > messages then an example > > of the messages in question would be helpful. > > Here's a small snippet from last night - it's just a few lines every few > minutes. Mostly it's a regular scheduler report (does this go to > stdout? maybe I should filter it!) and one legitimate error (definitely > don't want to filter this). The scheduler stuff vanishes if one redirects stdout to /dev/null (at least for me with 8.1.9). Other stuff ( a few messages at startup ) still gets logged (again at least the messages I saw). William
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