calibre-server - cannot start second instance

[mike26]

Running on Ubuntu 18.04.1. According to earlier posts, this should work but seems to be broken in the latest release. Can anyone confirm this is correct?

$ /opt/calibre/calibre-server --version
calibre-server (calibre 3.38.1)

~$ /opt/calibre/calibre-server --port 8080 /home/<user>/Calibre/IT &
[1] 28502
~$ calibre server listening on 0.0.0.0:8080

~$ OPDS feeds advertised via BonJour at: 192.168.0.110 port: 8080

~$

~$ ps -ef | grep calibre
<user> 28502 24402 0 10:31 pts/0 00:00:01 /opt/calibre/bin/calibre-server --port 8080 /home/sergiu/Calibre/IT
<user> 28569 24402 0 10:36 pts/0 00:00:00 grep --color=auto calibre

~$

~$ /opt/calibre/calibre-server --port 8081 /home/<user>/Calibre/Literature/ &
[2] 28522
~$ Another calibre program such as another instance of calibre-server or the main calibre program is running. Having multiple programs that can make changes to a calibre library running at the same time is not supported.

[2]+ Exit 1

[itimpi]

I do not believe you can start multiple instances of Calibre server any more!

Why do you want to anyway as nowadays a single instance gives access to all your Calibre libraries.

[mike26]

Originally Posted by itimpi

I do not believe you can start multiple instances of Calibre server any more!

Why do you want to anyway as nowadays a single instance gives access to all your Calibre libraries.

Sorry, I thing I am missing something. How exactly one Calibre server instance can give me access all my Calibre libraries? TIA.

[mike26]

Originally Posted by mike26

Sorry, I thing I am missing something. How exactly one Calibre server instance can give me access all my Calibre libraries? TIA.

Never mind. Got it. Thanks.

[Geremia]

Originally Posted by itimpi

I do not believe you can start multiple instances of Calibre server any more!

Yes, I couldn't get it working even by specifying different ports…

[poxalew]

Late to the party, I know, but there is a way to start multiple instances: define the environment variable

CALIBRE_NO_SI_DANGER_DANGER

to anything you like except empty before starting the calibre-server process.

Warning: Here be dragons. Make damn sure you specify distinct library paths etc for the server on the command line, and be extremely careful about accessing the library metadata DB from outside of that server (in the best case, the server will not pick up any changes until it's restarted; in the worst case, you might corrupt it.)