Gollum is a simple wiki system built on top of Git. A Gollum Wiki is simply a git repository (either bare or regular) of a specific nature:
- A Gollum repository's contents are human-editable, unless the repository is bare.
- Pages are unique text files which may be organized into directories any way you choose.
- Other content can also be included, for example images, PDFs and headers/footers for your pages.
- May be written in a variety of markups.
- Can be edited with your favourite system editor or IDE (changes will be visible after committing) or with the built-in web interface.
- Can be displayed in all versions (commits).
As you'll note in the (real world) screenshot above, my requirements for a personal wiki are:
- Portable across my devices
- Supports images
- Full-text search
- Supports inter-note links
- Revision control
Gollum meets all these requirements, and as an added bonus, is extremely fast and lightweight.
Since Gollum itself offers no user authentication, this design secures gollum behind traefik-forward-auth, so that in order to gain access to the Gollum UI at all, authentication must have already occurred.
- Docker swarm cluster with persistent shared storage
- Traefik configured per design
- DNS entry for the hostname you intend to use (or a wildcard), pointed to your keepalived IP
Setup data locations
We'll need an empty git repository in /var/data/gollum for our data:
mkdir /var/data/gollum cd /var/data/gollum git init
Gollum Docker Swarm config
Create a docker swarm config file in docker-compose syntax (v3), something like the example below:
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version: '3' services: app: image: dakue/gollum volumes: - /var/data/gollum:/gollum networks: - internal - traefik_public deploy: labels: # traefik common - traefik.enable=true - traefik.docker.network=traefik_public # traefikv1 - traefik.frontend.rule=Host:gollum.example.com - traefik.port=4567 # traefikv2 - "traefik.http.routers.gollum.rule=Host(`gollum.example.com`)" - "traefik.http.services.gollum.loadbalancer.server.port=4567" - "traefik.enable=true" # Remove if you wish to access the URL directly - "traefik.http.routers.wekan.middlewares=forward-auth@file" command: | --allow-uploads --emoji --user-icons gravatar networks: traefik_public: external: true internal: driver: overlay ipam: config: - subnet: 172.16.9.0/24
Setup unique static subnets for every stack you deploy. This avoids IP/gateway conflicts which can otherwise occur when you're creating/removing stacks a lot. See my list here.
Launch Gollum stack
Launch the Gollum stack by running
docker stack deploy gollum -c <path-to-docker-compose.yml>
Chef's notes 📓
In the current implementation, Gollum is a "single user" tool only. The contents of the wiki are saved as markdown files under /var/data/gollum, and all the git commits are currently "Anonymous" ↩
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