I had earlier replied to this thread but looks like the email did not go through. I had leaned towards using the tool (only just) instead of may be having a CRON job or an alternative.
What I feel now is that may be we can use JMX here and try to use various in build MBeans that provide CPU usage for the system and also for the JVM process we are concerned about that is OFBiz instance. We should also be able to get the memory usage of the JVM and if reaches a particular threshold we can be notified. In addition, I think we already add a shutdown hook to the JVM process... I am not sure and have not used it much but may be we can use it to send some notifications? Of course, it is applicable for graceful exits of JVM only and if you just happen to kill the process it won't be of much help. Hope it makes sense and correct me if I am wrong. Best regards, Girish Vasmatkar HotWax Systems On Thu, Aug 23, 2018 at 8:48 PM Jacques Le Roux < jacques.le.r...@les7arts.com> wrote: > Le 23/08/2018 à 14:04, Taher Alkhateeb a écrit : > > I'm not sure why you're hanging this on me, > Because you answered to the bait ;) > > > but sure I'm willing to > > help. > Thanks, much appreciated! > > > Can I get some information on how the crashes are happening and > > how you're getting notified, and I will take it from there. > I think after a crash it's mostly to use dumps there (we have several from > the recent pas) but I'm not sure they will help, and it takes time to > analyse. > > In the past I took the time to analyse some of them and it was > interesting. For instance in 2010 I found a bug in a Java version we were > using and it > helped me in a custom project I was also doing then: > https://markmail.org/message/byu2ivjn7wckayzz > > Lastly it was mostly lack of memory, despite having 8GB now. I created > https://issues.apache.org/jira/browse/INFRA-16780 for that, but not sure > it was > the reason. At least we have less issues since. > > Before (months ago) the Infra was monitoring our demos and alerting us by > mail (you just had to subscribe). Unfortunately we are on our own for that > now, too much projects in the ASF... > As as I said initially in this thread I'm currently using montastic.com > for the email alerts. > My idea when I started this thread was that it all depends on me, and > that's bad. So I wanted people to be aware, you are much welcome. > > Jacques > > On Thu, Aug 23, 2018 at 2:29 PM Jacques Le Roux > > <jacques.le.r...@les7arts.com> wrote: > >> Yes we can, will you? > >> > >> Jacques > >> > >> > >> Le 22/08/2018 à 19:29, Taher Alkhateeb a écrit : > >>> Well, we can ask Infra for help, we can check available solutions, we > >>> can create a CRON script that checks things periodically, there are > >>> multiple ways to go about this. > >>> > >>> My personal preference is for a simple CRON script that takes care of > this. > >>> On Wed, Aug 22, 2018 at 8:25 PM Jacques Le Roux > >>> <jacques.le.r...@les7arts.com> wrote: > >>>> So you prefer that I'm the only one to take care of the demos and act > on alerts? > >>>> > >>>> Jacques > >>>> > >>>> > >>>> Le 22/08/2018 à 18:53, Taher Alkhateeb a écrit : > >>>>> I prefer not to include any tools without proper analysis and > >>>>> discussion first. Less is more. > >>>>> On Wed, Aug 22, 2018 at 5:31 PM Jacques Le Roux > >>>>> <jacques.le.r...@les7arts.com> wrote: > >>>>>> Hi, > >>>>>> > >>>>>> Should I consider no answers as a lazy consensus and should I send > (rare) alerts to this ML? > >>>>>> > >>>>>> Without any answers I'll consider it a lazy consensus in 2 days. > >>>>>> > >>>>>> Jacques > >>>>>> > >>>>>> > >>>>>> Le 17/08/2018 à 12:22, Jacques Le Roux a écrit : > >>>>>>> Le 13/08/2018 à 18:21, Jacques Le Roux a écrit : > >>>>>>>> Le 12/08/2018 à 11:26, Jacques Le Roux a écrit : > >>>>>>>>> Hi, > >>>>>>>>> > >>>>>>>>> This morning I noticed the old demo was down and restarted it > after cleaning things. > >>>>>>>>> > >>>>>>>>> Previously (still some weeks ago) Daniel Gruno's (from Infra > team) company was kindly providing us a mean to monitor our demos but it > seems that > >>>>>>>>> this mean is no longer available > >>>>>>>>> > >>>>>>>>> I have asked about it and will let you know about it... > >>>>>>>>> > >>>>>>>>> Have a good weekend > >>>>>>>>> > >>>>>>>>> Jadques > >>>>>>>>> > >>>>>>>> Daniel confirmed it's terminated. I turned to UpTimeRobot which > is free and seems as well good :) > >>>>>>>> > >>>>>>>> Jacques > >>>>>>>> > >>>>>>>> > >>>>>>> This thread started on user ML but I don't want to bother everyone > with technical details. > >>>>>>> > >>>>>>> I used my own @a.o email to create the monitoring. UpTimeRobot is > certainly the best free monitoring tool, with some possibilities others > don't give. > >>>>>>> > >>>>>>> But the free version has an inconvenient. You can only check every > 5 mins and when the instances restart it takes more than 5 mins each. > >>>>>>> > >>>>>>> So everyday I get a down an up alerts for each. I have switched to > montastic.com. > >>>>>>> > >>>>>>> I was wondering if we don't want to share that here. > >>>>>>> We could then have these alerts here and any committer, using the > info in https://svn.apache.org/repos/asf/ofbiz/tools/demo-backup could > handle issues. > >>>>>>> > >>>>>>> It seems better, isn'it? > >>>>>>> > >>>>>>> Jacques > >>>>>>> > >>>>>>> > >
