> On May 27, 2014, 4:59 p.m., Chiradeep Vittal wrote: > > I like the idea of taking action on OOM in the VR/systemvm. However there > > is a missing (very important) piece: the VR stays unconfigured. So, it > > should actually stop, not reboot in order for the management server to take > > notice and perform HA. > > Joris van Lieshout wrote: > As far as I know Debian does not have a way to halt after a panic. I > agree that a reboot of the SVM is not the best solution but it is still > better then having the OOM killer randomly kill processes ending up partially > functional. What's you though on this: have cloud-early-config detect a > non-ACS initiated reboot, f.i. a panic, and stop the SVM? > > Joris van Lieshout wrote: > how about adding something like this to cloud-early-config? > > local DIDICRASH=$(last -x -4 | grep crash) > [ -n "$DIDICRASH" ] && log_it "Last boot due to crash, shutting down." && > shutdown -h now
I just had a chat with the guys refacturing the rrvm code and what I understood is that the new code will be able to deal with a rvm that has been rebooted preventing it from getting in an unconfigured state. - Joris ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/21773/#review43985 ----------------------------------------------------------- On May 26, 2014, 2:34 p.m., Joris van Lieshout wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/21773/ > ----------------------------------------------------------- > > (Updated May 26, 2014, 2:34 p.m.) > > > Review request for cloudstack, Chiradeep Vittal, daan Hoogland, edison su, > Hugo Trippaers, and Sheng Yang. > > > Repository: cloudstack-git > > > Description > ------- > > net.ipv4.ip_nonlocal_bind = 1 > For smooth transition on redundant routers in case of a failover > > kernel.panic = 10 > kernel.panic_on_oops = 1 > vm.panic_on_oom = 1 > This way, if the instance oops/ooms, it dies in a way that ACS sees it and > can act on it > > net.nf_conntrack_max = 1000000 > net.netfilter.nf_conntrack_max = 1000000 > also up the limit of nf_conntrack for more performance > > > Diffs > ----- > > systemvm/patches/debian/config/etc/sysctl.conf 586d5bd > > Diff: https://reviews.apache.org/r/21773/diff/ > > > Testing > ------- > > we are running these settings in our beta and prod env for months allready, > with good results. > > > Thanks, > > Joris van Lieshout > >
