Subj : Synology Docker Mystic Test
To   : All
From : opicron
Date : Thu Feb 06 2025 06:03 pm

Eejz,

I was suffering from an occasional unresponsive Mystic Docker instance. Causes were multiple issues:

- too many connections to port 22/23 due to portscanners
    + causing Mystic to respond only with BUSY
- my scripts failing and causing the node to freeze
- various server issues which caused ssh/telnet to be unresponsive

So, I was breaking my brain how to externally check if connection to the server was possible.

I wrote a script which does the following:
- Retrieves IP from Mystic Docker
- Checks if the server responds with BUSY
- Checks if with a timed delay we can find the ASCII string
    + ASCII is returned when connecting to mystic and not responding to the
      detecting terminal command
- When required it sends a restart to the Mystic Docker

If anybody wants to make their Synology Docker more failsafe, or wants to adapt this script to send other commands, feel free.

https://github.com/opicron/mysticbbs/blob/master/src/mystic-test.sh

oP!

.... Using PKZIP Version 2.04zzzzzzzzzzz

--- Mystic BBS v1.12 A49 2024/05/29 (Linux/64)
 * Origin: TheForze - bbs.theforze.eu:23 (21:3/126)

.