Could you both reply with details of your OS, Kibana version, any plugins installed, and hardware (bare metal or VM, RAM, CPUs, etc).
Also, could you check
/var/log/messages (depending on OS) to see if there's any messages there regarding Kibana.
- Do you have any estimates for how long Kibana is up before it shuts down?
- Is this a production Kibana installation, demo, development?
- Are there many users accessing this Kibana?
- Is there someone using it at the time when you think Kibana shuts down? If so, what is the user doing?
Could you also try running Kibana something like this;
time bin/kibana; date
so that if Kibana exits we can see how long it was up and the exact timestamp when it exited. This might make it easier to look for anything around that time in logs.