How to run long running script in background

[irfad]

Hi,

I have a shell script contains (lsof) command defined with userparameter which usually take few minutes to complete on large servers.

Currently I use at to schedule the script in background and read from an output file.

I tried to use normal methods like & and nohup but it doesn't work when executed as zabbix item and times out despite it works when executed from bash.

Could anyone help me if there's a way to run it in background instead of using another tool like at

[jan.garaj]

system.run[command,<mode>]
mode: nowait - do not wait for end of execution

https://www.zabbix.com/documentation/3.2/manual/config/items/itemtypes/zabbix_agent

[irfad]

system.run[command,<mode>]
mode: nowait - do not wait for end of execution

https://www.zabbix.com/documentation...s/zabbix_agent

Thank you for the info. Unfortunately, we have disabled EnableRemoteCommands for security reasons which is required to use system.run

[jan.garaj]

Then make your hand dirty and code it: use your favorite programming/scripting language and create utility which will start required command in the background and it will exit immediately. Then you can use that utility in the userparameter. If the output is not huge, then you can write it into shared memory, just to minimize IOPs.

[irfad]

That's a good idea. I will try to work on this and revert back. Thank you

[_Andrey]

Then make your hand dirty and code it: use your favorite programming/scripting language and create utility which will start required command in the background and it will exit immediately. Then you can use that utility in the userparameter. If the output is not huge, then you can write it into shared memory, just to minimize IOPs.

Suddenly it doesn't work though. I've made a basic python script that creates fork and exits - work as expected when in shell but when I use it through "zabbix_agent2 -t" it's trying to wait it's child and finally KILLS it upon timeout (why?)... Maybe you have the idea how to achieve behavior that you'd mentioned above? Thanks.