docker-documentation/images/docker-hydra.md

# [linuxserver/hydra](https://github.com/linuxserver/docker-hydra)

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[Hydra](https://github.com/theotherp/nzbhydra) is a meta search for NZB indexers and the "spiritual successor" to NZBmegasearcH. It provides easy access to a number of raw and newznab based indexers.

## Supported Architectures

Our images support multiple architectures such as `x86-64`, `arm64` and `armhf`. We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#manifest-list). 

Simply pulling `linuxserver/hydra` should retrieve the correct image for your arch, but you can also pull specific arch images via tags.

The architectures supported by this image are:

| Architecture | Tag |
| :----: | --- |
| x86-64 | amd64-latest |
| arm64 | arm64v8-latest |
| armhf | arm32v6-latest |


## Usage

Here are some example snippets to help you get started creating a container from this image.

### docker

```
docker create \
  --name=hydra \
  -e PUID=1001 \
  -e PGID=1001 \
  -e TZ=Europe/London \
  -p 5075:5075 \
  -v <path to data>:/config \
  -v <nzb download>:/downloads \
  --restart unless-stopped \
  linuxserver/hydra
```


### docker-compose

Compatible with docker-compose v2 schemas.

```yaml
---
version: "2"
services:
  hydra:
    image: linuxserver/hydra
    container_name: hydra
    environment:
      - PUID=1001
      - PGID=1001
      - TZ=Europe/London
    volumes:
      - <path to data>:/config
      - <nzb download>:/downloads
    ports:
      - 5075:5075
    mem_limit: 4096m
    restart: unless-stopped
```

## Parameters

Docker images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate `<external>:<internal>` respectively. For example, `-p 8080:80` would expose port `80` from inside the container to be accessible from the host's IP on port `8080` outside the container.

### Ports (`-p`)

| Parameter | Function |
| :----: | --- |
| `5075` | WebUI |


### Environment Variables (`-e`)

| Env | Function |
| :----: | --- |
| `PUID=1001` | for UserID - see below for explanation |
| `PGID=1001` | for GroupID - see below for explanation |
| `TZ=Europe/London` | Specify a timezone to use EG Europe/London. |

### Volume Mappings (`-v`)

| Volume | Function |
| :----: | --- |
| `/config` | Where hydra should store config files. |
| `/downloads` | NZB download folder. |



## User / Group Identifiers

When using volumes (`-v` flags), permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user `PUID` and group `PGID`.

Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.

In this instance `PUID=1001` and `PGID=1001`, to find yours use `id user` as below:

```
  $ id username
    uid=1001(dockeruser) gid=1001(dockergroup) groups=1001(dockergroup)
```

## Application Setup

The web interface is at `<your ip>:5075` , to set up indexers and connections to your nzb download applications.



## Support Info

* Shell access whilst the container is running: 
  * `docker exec -it hydra /bin/bash`
* To monitor the logs of the container in realtime: 
  * `docker logs -f hydra`
* Container version number 
  * `docker inspect -f '{{ index .Config.Labels "build_version" }}' hydra`
* Image version number
  * `docker inspect -f '{{ index .Config.Labels "build_version" }}' linuxserver/hydra`

## Versions

* **22.02.19:** - Rebasing to alpine 3.9.
* **11.02.19:** - Add pipeline logic and multi arch.
* **17.08.18:** - Rebase to alpine 3.8.
* **12.12.17:** - Rebase to alpine 3.7.
* **20.07.17:** - Internal git pull instead of at runtime.
* **25.05.17:** - Rebase to alpine 3.6.
* **07.11.16:** - Move git clone internal to the container,point config, database and log to use same locations for existing users.
* **14.10.16:** - Add version layer information.
* **09.09.16:** - Add layer badges to README.
* **28.08.16:** - Add badges to README.
* **08.08.16:** - Rebase to alpine linux.
* **25.01.16:** - Initial Release.