Add documentation (#110)

This commit is contained in:
Thomas Miceli
2023-09-25 18:57:47 +02:00
committed by GitHub
parent 5b278e2e86
commit 72275e7573
10 changed files with 324 additions and 194 deletions

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# Fail2ban setup
Fail2ban can be used to ban IPs that try to bruteforce the login page.
Log level must be set at least to `warn`.
Add this filter in `etc/fail2ban/filter.d/opengist.conf` :
```ini
[Definition]
failregex = Invalid .* authentication attempt from <HOST>
ignoreregex =
```
Add this jail in `etc/fail2ban/jail.d/opengist.conf` :
```ini
[opengist]
enabled = true
filter = opengist
logpath = /home/*/.opengist/log/opengist.log
maxretry = 10
findtime = 3600
bantime = 600
banaction = iptables-allports
port = anyport
```
Then run
```shell
service fail2ban restart
```

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# Use Nginx as a reverse proxy
Configure Nginx to proxy requests to Opengist. Here is an example configuration file :
```
server {
listen 80;
server_name opengist.example.com;
location / {
proxy_pass http://127.0.0.1:6157;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
}
}
```
Then run :
```shell
service nginx restart
```

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# Use OAuth providers
Opengist can be configured to use OAuth to authenticate users, with GitHub, Gitea, or OpenID Connect.
## Github
* Add a new OAuth app in your [Github account settings](https://github.com/settings/applications/new)
* Set 'Authorization callback URL' to `http://opengist.domain/oauth/github/callback`
* Copy the 'Client ID' and 'Client Secret' and add them to the [configuration](/docs/configuration/cheat-sheet.md) :
```yaml
github.client-key: <key>
github.secret: <secret>
```
## Gitea
* Add a new OAuth app in Application settings from the [Gitea instance](https://gitea.com/user/settings/applications)
* Set 'Redirect URI' to `http://opengist.domain/oauth/gitea/callback`
* Copy the 'Client ID' and 'Client Secret' and add them to the [configuration](/docs/configuration/cheat-sheet.md) :
```yaml
gitea.client-key: <key>
gitea.secret: <secret>
# URL of the Gitea instance. Default: https://gitea.com/
gitea.url: http://localhost:3000
```
## OpenID Connect
* Add a new OAuth app in Application settings of your OIDC provider
* Set 'Redirect URI' to `http://opengist.domain/oauth/openid-connect/callback`
* Copy the 'Client ID', 'Client Secret', and the discovery endpoint, and add them to the [configuration](/docs/configuration/cheat-sheet.md) :
```yaml
oidc.client-key: <key>
oidc.secret: <secret>
# Discovery endpoint of the OpenID provider. Generally something like http://auth.example.com/.well-known/openid-configuration
oidc.discovery-url: http://auth.example.com/.well-known/openid-configuration
```

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# Configuration Cheat Sheet
| YAML Config Key | Environment Variable | Default value | Description |
|-----------------------|--------------------------|----------------------|-----------------------------------------------------------------------------------------------------------------------------------|
| log-level | OG_LOG_LEVEL | `warn` | Set the log level to one of the following: `trace`, `debug`, `info`, `warn`, `error`, `fatal`, `panic`. |
| external-url | OG_EXTERNAL_URL | none | Public URL for the Git HTTP/SSH connection. If not set, uses the URL from the request. |
| opengist-home | OG_OPENGIST_HOME | home directory | Path to the directory where Opengist stores its data. |
| db-filename | OG_DB_FILENAME | `opengist.db` | Name of the SQLite database file. |
| sqlite.journal-mode | OG_SQLITE_JOURNAL_MODE | `WAL` | Set the journal mode for SQLite. More info [here](https://www.sqlite.org/pragma.html#pragma_journal_mode) |
| http.host | OG_HTTP_HOST | `0.0.0.0` | The host on which the HTTP server should bind. |
| http.port | OG_HTTP_PORT | `6157` | The port on which the HTTP server should listen. |
| http.git-enabled | OG_HTTP_GIT_ENABLED | `true` | Enable or disable git operations (clone, pull, push) via HTTP. (`true` or `false`) |
| ssh.git-enabled | OG_SSH_GIT_ENABLED | `true` | Enable or disable git operations (clone, pull, push) via SSH. (`true` or `false`) |
| ssh.host | OG_SSH_HOST | `0.0.0.0` | The host on which the SSH server should bind. |
| ssh.port | OG_SSH_PORT | `2222` | The port on which the SSH server should listen. |
| ssh.external-domain | OG_SSH_EXTERNAL_DOMAIN | none | Public domain for the Git SSH connection, if it has to be different from the HTTP one. If not set, uses the URL from the request. |
| ssh.keygen-executable | OG_SSH_KEYGEN_EXECUTABLE | `ssh-keygen` | Path to the SSH key generation executable. |
| github.client-key | OG_GITHUB_CLIENT_KEY | none | The client key for the GitHub OAuth application. |
| github.secret | OG_GITHUB_SECRET | none | The secret for the GitHub OAuth application. |
| gitea.client-key | OG_GITEA_CLIENT_KEY | none | The client key for the Gitea OAuth application. |
| gitea.secret | OG_GITEA_SECRET | none | The secret for the Gitea OAuth application. |
| gitea.url | OG_GITEA_URL | `https://gitea.com/` | The URL of the Gitea instance. |
| oidc.client-key | OG_OIDC_CLIENT_KEY | none | The client key for the OpenID application. |
| oidc.secret | OG_OIDC_SECRET | none | The secret for the OpenID application. |
| oidc.discovery-url | OG_OIDC_DISCOVERY_URL | none | Discovery endpoint of the OpenID provider. |

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# Configuration
Opengist provides flexible configuration options through either a YAML file and/or environment variables.
You would only need to specify the configuration options you want to change — for any config option left untouched,
Opengist will simply apply the default values.
The [configuration cheat sheet](cheat-sheet.md) lists all available configuration options.
## Configuration via YAML file
The configuration file must be specified when launching the application, using the `--config` flag followed by the path
to your YAML file.
```shell
./opengist --config /path/to/config.yml
```
You can start by copying and/or modifying the provided [config.yml](/config.yml) file.
## Configuration via Environment Variables
Usage with Docker Compose :
```yml
services:
opengist:
# ...
environment:
OG_LOG_LEVEL: "info"
# etc.
```
Usage via command line :
```shell
OG_LOG_LEVEL=info ./opengist
```

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# Opengist
Opengist is a **self-hosted** pastebin **powered by Git**. All snippets are stored in a Git repository and can be
read and/or modified using standard Git commands, or with the web interface.
It is similiar to [GitHub Gist](https://gist.github.com/), but open-source and could be self-hosted.
Written in [Go](https://go.dev), Opengist aims to be fast and easy to deploy.
## Features
* Create public, unlisted or private snippets
* [Init](/docs/usage/init-via-git.md) / Clone / Pull / Push snippets **via Git** over HTTP or SSH
* Revisions history
* Syntax highlighting ; markdown & CSV support
* Like / Fork snippets
* Search for snippets ; browse users snippets, likes and forks
* Editor with indentation mode & size ; drag and drop files
* Download raw files or as a ZIP archive
* OAuth2 login with GitHub, Gitea, and OpenID Connect
* Avatars via Gravatar or OAuth2 providers
* Light/Dark mode
* Responsive UI
* Enable or disable signups
* Restrict or unrestrict snippets visibility to anonymous users
* Admin panel :
* delete users/gists;
* clean database/filesystem by syncing gists
* run `git gc` for all repositories
* SQLite database
* Logging
* Docker support
## System requirements
[Git](https://git-scm.com/download) is obviously required to run Opengist, as it's the main feature of the app.
Version **2.20** or later is recommended as the app has not been tested with older Git versions.
[OpenSSH](https://www.openssh.com/) suite if you wish to use Git over SSH
## Components
* Backend Web Framework: [Echo](https://echo.labstack.com/)
* ORM: [GORM](https://gorm.io/)
* Frontend libraries:
* [Tailwind CSS](https://tailwindcss.com/)
* [CodeMirror](https://codemirror.net/)
* [Day.js](https://day.js.org/)
* [highlight.js](https://highlightjs.org/)
* and [others](/package.json)

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# Installation
## With Docker
Docker [images](https://github.com/thomiceli/opengist/pkgs/container/opengist) are available for each release :
```shell
docker pull ghcr.io/thomiceli/opengist:1
```
It can be used in a `docker-compose.yml` file :
1. Create a `docker-compose.yml` file with the following content
2. Run `docker compose up -d`
3. Opengist is now running on port 6157, you can browse http://localhost:6157
```yml
version: "3"
services:
opengist:
image: ghcr.io/thomiceli/opengist:1
container_name: opengist
restart: unless-stopped
ports:
- "6157:6157" # HTTP port
- "2222:2222" # SSH port, can be removed if you don't use SSH
volumes:
- "$HOME/.opengist:/opengist"
```
You can define which user/group should run the container and own the files by setting the `UID` and `GID` environment
variables :
```yml
services:
opengist:
# ...
environment:
UID: 1001
GID: 1001
```
## From source
Requirements :
* [Git](https://git-scm.com/downloads) (2.20+)
* [Go](https://go.dev/doc/install) (1.20+)
* [Node.js](https://nodejs.org/en/download/) (16+)
```shell
git clone https://github.com/thomiceli/opengist
cd opengist
make
./opengist
```
Opengist is now running on port 6157, you can browse http://localhost:6157

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# Init Gists via Git
Opengist allows you to create new snippets via Git over HTTP.
Simply init a new Git repository where your file(s) is/are located:
```shell
git init
git add .
git commit -m "My cool snippet"
```
Then add this Opengist special remote URL and push your changes:
```shell
git remote add origin http://localhost:6157/init
git push -u origin master
```
Log in with your Opengist account credentials, and your snippet will be created at the specified URL:
```shell
Username for 'http://localhost:6157': thomas
Password for 'http://thomas@localhost:6157':
Enumerating objects: 3, done.
Counting objects: 100% (3/3), done.
Delta compression using up to 8 threads
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 416 bytes | 416.00 KiB/s, done.
Total 3 (delta 0), reused 0 (delta 0), pack-reused 0
remote:
remote: Your new repository has been created here: http://localhost:6157/thomas/6051e930f140429f9a2f3bb1fa101066
remote:
remote: If you want to keep working with your gist, you could set the remote URL via:
remote: git remote set-url origin http://localhost:6157/thomas/6051e930f140429f9a2f3bb1fa101066
remote:
To http://localhost:6157/init
* [new branch] master -> master
```
https://github.com/thomiceli/opengist/assets/27960254/3fe1a0ba-b638-4928-83a1-f38e46fea066