Hello. There is a problem. We have suspicion that when connected to a HikariCP, leaks accumulate and crash occurs. At first, we thought that the location of the database was to blame, but after replacing the location, nothing changed.

What version of LP?

5.1.26

Huh weird, do you have the full error?

It shouldn't be leaking connections, the connection pool takes care of that.

Sorry, but we have only this screenshot of the error.

Hm... From LP there are only these messages.

The [luckperms-scheduler-worker-x] log prefix in your screenshot does not line up with what I'd expect to see from the latest version - this was changed a while ago. Are you sure you're definitely using the version you say you are?

I'd also expect to at least see some other messages from LuckPerms, but if you say so....

Unless you're willing to cooperate there's very little I can do to actually help.

Has the issue not happened since then?

This issue has always been there.

Can you send a full log then please:)

I want to cooperate with you. Okay, I will send the full log.

Sorry

There is an error at the bottom.
2020-05-23-1.log

We can agree that the DB server does not accept connections. But clearly the crash connection - the fault of LuckPerms.
P.S. our build has a plugin that works with the same DB on the same server using HikariCP. So there this problem is not noticed, which means that LuckPerms is to blame.

"Crash connection"? Sorry, I don't know what you're referring to.

If you can point to a specific Hikari configuration option that you think is causing the problem then I'm happy to try changing things.

However, the current configuration is working perfectly fine for thousands of other servers - if there was such an egregious error in the way that LP was handling connections, you would not be the only person experiencing them.

Which leaves me to suggest reading the wiki article I linked above - that is my exhaustive advice regarding connection issues - I've got nothing else to share.

Alright thanks, I've had a quick look, seems that your database is just not responding to connections - there's nothing else in the log which would indicate it's a problem caused by LP.

There are some more details about these sort of problems here:
https://github.com/lucko/LuckPerms/wiki/Storage-system-errors