Calibre Content Server Logging

[Tarmedprogrammer]

I am running Calibre Content Server on an Ubuntu VM and recently enabled logging to get a better idea of what my users are accessing/reading/downloading and how many users are actually hitting the library. Unfortunately, both the log and access-log are only showing when the server is stopped/started and no actual info beyond that. Is there a log level option or is this a limitation regarding using systemctl to run Calibre server?

[kovidgoyal]

You enabled logging how?

[Tarmedprogrammer]

I enabled logging by adding "--log=/home/michel/calibre_logs/calibre_log --access-log=/home/michel/calibre_logs/calibre_access_logs" to my systemctl service file. (full file below)

│ File: /etc/systemd/system/calibre-server.service
───────┼────────────────────────────────────────── ────────────────────────────────────────────────── ────────────────────────────────────────────────── ────────────────────────────────────────────────── ──────────
1 │ [Unit]
2 │ Description=Calibre Server
3 │ After=network.target
4 │
5 │ [Service]
6 │ Type=simple
7 │ User=michel
8 │ Group=michel
9 │ ExecStart=/opt/calibre/calibre-server /mnt/Hoard/Library/Adult /mnt/Hoard/Library/Fiction /mnt/Hoard/Library/Non-Fiction /mnt/Hoard/Library/WitchcraftAndWicca /mnt/Hoard/Library/DungeonsAndDragons /mnt
│ /Hoard/Library/YoungAdultFiction /mnt/Hoard/Library/Childrens --enable-local-write --log=/home/michel/calibre_logs/calibre_log --access-log=/home/michel/calibre_logs/calibre_access_logs
10 │
11 │ [Install]
12 │ WantedBy=multi-user.target

[kovidgoyal]

Looks fine to me, make sure the logging directory exists and whatever uid/gid you are running the server as has write permissions for it. Or just log to /dev/stdout with --access-log=/dev/stdout and then use systemd journalctl to view the log.

[Tarmedprogrammer]

Confirmed that they both exist and are writable. Unfortunately, the access log only shows my public IP as the incoming connection (likely due to using Cloudflare Tunnel to access). However, the main log file only shows this:

calibre server listening on 0.0.0.0:8080
OPDS feeds advertised via BonJour at: 192.168.99.161 port: 8080

Is there a way to get an output from either of those logs (possibly with grep) of what books are being viewed/downloaded?

[kovidgoyal]

There is no logging of what book sare viewed downloaded as such. You can grep for the endpoints used by such requests and correlate them with book ids in the db.