Home assistant add-on: Ubooquity
I maintain this and other Home Assistant add-ons in my free time: keeping up with upstream changes, HA changes, and testing on real hardware takes a lot of time (and some money). I use around 5-10 of my >110 addons so regularly I install test machines (and purchase some test services such as vpn) that I don't use myself to troubleshoot and improve the addons
If this add-on saves you time or makes your setup easier, I would be very grateful for your support!
Addon informations
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About
Ubooquity by vaemendis is a free, lightweight and easy-to-use home server for your comics and ebooks developed . This addon is based on the docker image from linuxserver.io.
Ubooquity supports many types of files, with a preference for ePUB, CBZ, CBR and PDF files. Metadata from library management software Calibre and ComicRack are also supported. Ubooquity lets you create user accounts and set access rights for each shared folder.
This addons has several configurable options :
- allowing to mount local external drive, or smb share from the addon (decreases performance)
- VERY IMPORTANT, CAN CRASH SYSTEM : Setting of the maximum RAM usage for java. The quantity of memory allocated to Ubooquity depends on the hardware your are running it on. If this quantity is too small, you might sometime saturate it with when performing memory intensive operations and you'll get "java.lang.OutOfMemoryError: Java heap space errors". If the quantity allocated is too high for your system, it will crash home assistant and you'll need to manually reboot. Value is a number of megabytes ( put just a number, without MB).
It is recommended to enable OPDS server from option, then you can connect to your comics/eBook server from a mobile app (I use Chunky on iOS (paid), Kuboo on android (free))
Installation
The installation of this add-on is pretty straightforward and not different in comparison to installing any other Hass.io add-on.
- Add my Hass.io add-ons repository to your Hass.io instance.
- Install this add-on.
- Click the
Savebutton to store your configuration. - Start the add-on.
- Check the logs of the add-on to see if everything went well.
- Open the webUI, set an admin password and adapt the administration options
Configuration
Use the add-on env_vars option to pass extra environment variables (uppercase or lowercase names). See https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2 for details.
Webui can be found at http://homeassistant:PORT or through the sidebar using Ingress. The default username/password is described in the startup log. Configurations can be done through the app webUI, except for the following options.
Options
| Option | Type | Default | Description |
|---|---|---|---|
PGID |
int | 0 |
Group ID for file permissions |
PUID |
int | 0 |
User ID for file permissions |
TZ |
str | Timezone (e.g., Europe/London) |
|
maxmem |
int | 200 |
Maximum RAM usage for Java (MB) - CRITICAL SETTING |
ssl |
bool | false |
Enable HTTPS for the web interface |
certfile |
str | fullchain.pem |
Path for the TLS certificate |
keyfile |
str | privkey.pem |
Path for the TLS key file |
theme |
list | default |
Theme selection (default/comixology2/plextheme-master) |
localdisks |
str | Local drives to mount (e.g., sda1,sdb1,MYNAS) |
|
networkdisks |
str | SMB shares to mount (e.g., //SERVER/SHARE) |
|
cifsusername |
str | SMB username for network shares | |
cifspassword |
str | SMB password for network shares | |
cifsdomain |
str | SMB domain for network shares | |
smbv1 |
bool | false |
Enable SMB v1 protocol |
Important: The maxmem setting controls Java heap space. Too low causes OutOfMemoryError; too high can crash Home Assistant. Default 200MB for RPi3B+, 512MB recommended for systems with 2GB+ RAM.
Example Configuration
PGID: 0
PUID: 0
TZ: "Europe/London"
maxmem: 512
ssl: false
certfile: "fullchain.pem"
keyfile: "privkey.pem"
theme: "comixology2"
localdisks: "sda1,sdb1"
networkdisks: "//192.168.1.100/comics,//nas.local/books"
cifsusername: "comicuser"
cifspassword: "password123"
cifsdomain: "workgroup"
smbv1: false
Mounting Drives
This addon supports mounting both local drives and remote SMB shares:
- Local drives: See Mounting Local Drives in Addons
- Remote shares: See Mounting Remote Shares in Addons
Network disks are mounted to /mnt/share_name.
Support
Create an issue on the repository github, or ask on the home assistant thread

