Input Redis 8.10 package update

[krisdoff]

Server operating system version

Ubuntu 24.04.4

Plesk version and microupdate number

18.0.79

The Redis 8.10 update that was shipped tonight caused Redis on three Plesk servers of mine to fail this morning.

After some digging, I found that the working directory was set to the server root (default? not sure). This seems to have worked before, but wasn't working anymore.

Here's what I did to fix it, maybe it helps some others:

1. Stop the Redis server: sudo systemctl stop redis-server
2. Reset errors: sudo systemctl reset-failed redis-server
3. Edit /etc/redis/redis.conf and change the working directory directive to dir /var/lib/redis
4. Reload configs: sudo systemctl daemon-reload
5. Test the Redis config by starting it as the redis user: sudo -u redis redis-server /etc/redis/redis.conf
   1. If you see any errors here, follow the error messages, e.g. Address already in use means Redis is still running etc.
   2. If the output is Ready to accept connections, you're good to go
6. Exit the live Redis call (which will stop Redis again) and start Redis via systemctl: sudo systemctl start redis-server
7. Test Redis via redis-cli ping