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82 lines
5.2 KiB
Markdown
82 lines
5.2 KiB
Markdown
# how to host a cobalt instance yourself
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## using docker compose and package from github (recommended)
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to run the cobalt docker package, you need to have `docker` and `docker-compose` installed and configured.
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if you need help with installing docker, follow *only the first step* of these tutorials by digitalocean:
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- [how to install docker](https://www.digitalocean.com/community/tutorial-collections/how-to-install-and-use-docker)
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- [how to install docker compose](https://www.digitalocean.com/community/tutorial-collections/how-to-install-docker-compose)
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## how to run a cobalt docker package:
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1. create a folder for cobalt config file, something like this:
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```sh
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mkdir cobalt
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```
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2. go to cobalt folder, and create a docker compose config file:
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```sh
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cd cobalt && nano docker-compose.yml
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```
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i'm using `nano` in this example, it may not be available in your distro. you can use any other text editor.
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3. copy and paste the [sample config from here](examples/docker-compose.example.yml) for either web or api instance (or both, if you wish) and edit it to your needs.
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make sure to replace default URLs with your own or cobalt won't work correctly.
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4. finally, start the cobalt container (from cobalt directory):
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```sh
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docker compose up -d
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```
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if you want your instance to support services that require authentication to view public content, create `cookies.json` file in the same directory as `docker-compose.yml`. example cookies file [can be found here](examples/cookies.example.json).
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cobalt package will update automatically thanks to watchtower.
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it's highly recommended to use a reverse proxy (such as nginx) if you want your instance to face the public internet. look up tutorials online.
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## run cobalt api outside of docker (useful for local development)
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requirements:
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- node.js >= 18
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- git
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- pnpm
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1. clone the repo: `git clone https://github.com/imputnet/cobalt`.
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2. go to api/src directory: `cd cobalt/api/src`.
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3. install dependencies: `pnpm install`.
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4. create `.env` file in the same directory.
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5. add needed environment variables to `.env` file. only `API_URL` is required to run cobalt.
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- if you don't know what api url to use for local development, use `http://localhost:9000/`.
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6. run cobalt: `pnpm start`.
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### ubuntu 22.04 workaround
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`nscd` needs to be installed and running so that the `ffmpeg-static` binary can resolve DNS ([#101](https://github.com/imputnet/cobalt/issues/101#issuecomment-1494822258)):
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```bash
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sudo apt install nscd
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sudo service nscd start
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```
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## list of all environment variables
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### variables for api
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| variable name | default | example | description |
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|:----------------------|:----------|:------------------------|:------------|
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| `API_PORT` | `9000` | `9000` | changes port from which api server is accessible. |
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| `API_LISTEN_ADDRESS` | `0.0.0.0` | `127.0.0.1` | changes address from which api server is accessible. **if you are using docker, you usually don't need to configure this.** |
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| `API_URL` | ➖ | `https://api.cobalt.tools/` | changes url from which api server is accessible. <br> ***REQUIRED TO RUN THE API***. |
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| `API_NAME` | `unknown` | `ams-1` | api server name that is shown in `/api/serverInfo`. |
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| `API_EXTERNAL_PROXY` | ➖ | `http://user:password@127.0.0.1:8080`| url of the proxy that will be passed to [`ProxyAgent`](https://undici.nodejs.org/#/docs/api/ProxyAgent) and used for all external requests. HTTP(S) only. |
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| `CORS_WILDCARD` | `1` | `0` | toggles cross-origin resource sharing. <br> `0`: disabled. `1`: enabled. |
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| `CORS_URL` | not used | `https://cobalt.tools` | cross-origin resource sharing url. api will be available only from this url if `CORS_WILDCARD` is set to `0`. |
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| `COOKIE_PATH` | not used | `/cookies.json` | path for cookie file relative to main folder. |
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| `PROCESSING_PRIORITY` | not used | `10` | changes `nice` value* for ffmpeg subprocess. available only on unix systems. |
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| `FREEBIND_CIDR` | ➖ | `2001:db8::/32` | IPv6 prefix used for randomly assigning addresses to cobalt requests. only supported on linux systems. see below for more info. |
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| `RATELIMIT_WINDOW` | `60` | `120` | rate limit time window in **seconds**. |
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| `RATELIMIT_MAX` | `20` | `30` | max requests per time window. requests above this amount will be blocked for the rate limit window duration. |
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| `DURATION_LIMIT` | `10800` | `18000` | max allowed video duration in **seconds**. |
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\* the higher the nice value, the lower the priority. [read more here](https://en.wikipedia.org/wiki/Nice_(Unix)).
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#### FREEBIND_CIDR
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setting a `FREEBIND_CIDR` allows cobalt to pick a random IP for every download and use it for all
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requests it makes for that particular download. to use freebind in cobalt, you need to follow its [setup instructions](https://github.com/imputnet/freebind.js?tab=readme-ov-file#setup) first. if you configure this option while running cobalt
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in a docker container, you also need to set the `API_LISTEN_ADDRESS` env to `127.0.0.1`, and set
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`network_mode` for the container to `host`.
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