Process gets Killed by Linux OS

gopaltirupur · 07-27-2017, 11:24 PM

We deploy multiple JVMs in a Linux System along with a Gateway ( Node.js ) and a mongod server instance.

Some of the above listed processes are getting down randomly. There is no clue why they are down.

No OOM related log trace in /var/log syslog files, Is it possible for linux to kill the process other than OOM. If so what are the possible syslog errors ? ( I have the complete /var/log files )

Where to look to identify the actual issue ? We have no clue on this... Sombody can help please

pan64 · 07-28-2017, 02:21 AM

probably the jvm has some logs somewhere (not in /var/log). or the java app you executed has some config file to specify the logs.
There are a lot of ways to kill processes, but sometimes they may die without killing them just by some kind of internal issue.

gopaltirupur · 07-28-2017, 04:14 AM

@pan64, thanks for the reply. The question is what internal causes the issue. Why OS kills ?

pan64 · 07-28-2017, 04:24 AM

why do you think it is the OS? Probably the process itself is unstable. I cannot check it from here. You need to look for log files related to JVM and your app.

syg00 · 07-28-2017, 04:26 AM

Why do you insist the OS is responsible ?. If it were you would almost certainly have messages.
Track a failed pid, and see what messages preceded is demise.

gopaltirupur · 07-28-2017, 04:36 AM

the reason to suspect OS is JVM, mongod, node.js all are down.

pan64 · 07-28-2017, 06:29 AM

You ought to look for log files, without further information nobody can help you to solve this issue.

!!! · 07-28-2017, 06:36 AM

Welcome to LQ. Can you use strace on a process that .will. die? That will "get a clue"

Yes, just like a detective saying nothing but "We have NO clue on his death",
the goal of troubleshooting IS to "dig up" clues!!!

I know zero about these applications, but I beleve that dilligent web-searching study will find their "logs". Good luck. Let us know how, for future searchers. Thanks.