The LinuxServer.io team brings you another container release featuring:

regular and timely application updates
easy user mappings (PGID, PUID)
custom base image with s6 overlay
weekly base OS updates with common layers across the entire LinuxServer.io ecosystem to minimise space usage, down time and bandwidth
regular security updates

Find us at:

Blog - all the things you can do with our containers including How-To guides, opinions and much more!
Discord - realtime support / chat with the community and the team.
Discourse - post on our community forum.
Fleet - an online web interface which displays all of our maintained images.
GitHub - view the source for all of our repositories.
Open Collective - please consider helping us by either donating or contributing to our budget

linuxserver/healthchecks

Healthchecks is a watchdog for your cron jobs. It's a web server that listens for pings from your cron jobs, plus a web interface.

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 and our announcement here.

Simply pulling ghcr.io/linuxserver/healthchecks 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	arm32v7-latest

Application Setup

Access the WebUI at :8000. For more information, check out Healthchecks.

Usage

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

docker-compose (recommended, click here for more info)

---
version: "2.1"
services:
  healthchecks:
    image: ghcr.io/linuxserver/healthchecks
    container_name: healthchecks
    environment:
      - PUID=1000
      - PGID=1000
      - SITE_ROOT=<SITE_ROOT>
      - SITE_NAME=<SITE_NAME>
      - DEFAULT_FROM_EMAIL=<DEFAULT_FROM_EMAIL>
      - EMAIL_HOST=<EMAIL_HOST>
      - EMAIL_PORT=<EMAIL_PORT>
      - EMAIL_HOST_USER=<EMAIL_HOST_USER>
      - EMAIL_HOST_PASSWORD=<EMAIL_HOST_PASSWORD>
      - EMAIL_USE_TLS=<True or False>
      - ALLOWED_HOSTS=<ALLOWED_HOSTS>
      - SUPERUSER_EMAIL=<SUPERUSER_EMAIL>
      - SUPERUSER_PASSWORD=<SUPERUSER_PASSWORD>
      - REGENERATE_SETTINGS=True/False #optional
      - SITE_LOGO_URL=<SITE_LOGO_URL> #optional
    volumes:
      - <path to data on host>:/config
    ports:
      - 8000:8000
    restart: unless-stopped

docker cli (click here for more info)

docker run -d \
  --name=healthchecks \
  -e PUID=1000 \
  -e PGID=1000 \
  -e SITE_ROOT=<SITE_ROOT> \
  -e SITE_NAME=<SITE_NAME> \
  -e DEFAULT_FROM_EMAIL=<DEFAULT_FROM_EMAIL> \
  -e EMAIL_HOST=<EMAIL_HOST> \
  -e EMAIL_PORT=<EMAIL_PORT> \
  -e EMAIL_HOST_USER=<EMAIL_HOST_USER> \
  -e EMAIL_HOST_PASSWORD=<EMAIL_HOST_PASSWORD> \
  -e EMAIL_USE_TLS=<True or False> \
  -e ALLOWED_HOSTS=<ALLOWED_HOSTS> \
  -e SUPERUSER_EMAIL=<SUPERUSER_EMAIL> \
  -e SUPERUSER_PASSWORD=<SUPERUSER_PASSWORD> \
  -e REGENERATE_SETTINGS=True/False `#optional` \
  -e SITE_LOGO_URL=<SITE_LOGO_URL> `#optional` \
  -p 8000:8000 \
  -v <path to data on host>:/config \
  --restart unless-stopped \
  ghcr.io/linuxserver/healthchecks

Parameters

Container 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.

Parameter	Function
`-p 8000`	will map the container's port 8000 to port 8000 on the host
`-e PUID=1000`	for UserID - see below for explanation
`-e PGID=1000`	for GroupID - see below for explanation
`-e SITE_ROOT=<SITE_ROOT>`	The site's top-level URL and the port it listens to if differrent than 80 or 443 (e.g., https://healthchecks.example.com:8000)
`-e SITE_NAME=<SITE_NAME>`	The site's name (e.g., "Example Corp HealthChecks")
`-e DEFAULT_FROM_EMAIL=<DEFAULT_FROM_EMAIL>`	From email for alerts
`-e EMAIL_HOST=<EMAIL_HOST>`	SMTP host
`-e EMAIL_PORT=<EMAIL_PORT>`	SMTP port
`-e EMAIL_HOST_USER=<EMAIL_HOST_USER>`	SMTP user
`-e EMAIL_HOST_PASSWORD=<EMAIL_HOST_PASSWORD>`	SMTP password
`-e EMAIL_USE_TLS=<True or False>`	Use TLS for SMTP (`True` or `False`)
`-e ALLOWED_HOSTS=<ALLOWED_HOSTS>`	array of valid hostnames for the server `["test.com","test2.com"]` or `"*"`
`-e SUPERUSER_EMAIL=<SUPERUSER_EMAIL>`	Superuser email
`-e SUPERUSER_PASSWORD=<SUPERUSER_PASSWORD>`	Superuser password
`-e REGENERATE_SETTINGS=True/False`	Defaults to False. Set to true to always override the `local_settings.py` file with values from environment variables. Do not set to True if you have made manual modifications to this file.
`-e SITE_LOGO_URL=<SITE_LOGO_URL>`	Custom site logo URL
`-v /config`	database and healthchecks config directory volume mapping

Environment variables from files (Docker secrets)

You can set any environment variable from a file by using a special prepend FILE__.

As an example:

-e FILE__PASSWORD=/run/secrets/mysecretpassword

Will set the environment variable PASSWORD based on the contents of the /run/secrets/mysecretpassword file.

Umask for running applications

For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional -e UMASK=022 setting. Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up here before asking for support.

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=1000 and PGID=1000, to find yours use id user as below:

  $ id username
    uid=1000(dockeruser) gid=1000(dockergroup) groups=1000(dockergroup)

Docker Mods

We publish various Docker Mods to enable additional functionality within the containers. The list of Mods available for this image (if any) as well as universal mods that can be applied to any one of our images can be accessed via the dynamic badges above.

Support Info

Shell access whilst the container is running: docker exec -it healthchecks /bin/bash
To monitor the logs of the container in realtime: docker logs -f healthchecks
container version number
- docker inspect -f '{{ index .Config.Labels "build_version" }}' healthchecks
image version number
- docker inspect -f '{{ index .Config.Labels "build_version" }}' ghcr.io/linuxserver/healthchecks

Updating Info

Most of our images are static, versioned, and require an image update and container recreation to update the app inside. With some exceptions (ie. nextcloud, plex), we do not recommend or support updating apps inside the container. Please consult the Application Setup section above to see if it is recommended for the image.

Below are the instructions for updating containers:

Via Docker Compose

Update all images: docker-compose pull
- or update a single image: docker-compose pull healthchecks
Let compose update all containers as necessary: docker-compose up -d
- or update a single container: docker-compose up -d healthchecks
You can also remove the old dangling images: docker image prune

Via Docker Run

Update the image: docker pull ghcr.io/linuxserver/healthchecks
Stop the running container: docker stop healthchecks
Delete the container: docker rm healthchecks
Recreate a new container with the same docker run parameters as instructed above (if mapped correctly to a host folder, your /config folder and settings will be preserved)
You can also remove the old dangling images: docker image prune

Via Watchtower auto-updater (only use if you don't remember the original parameters)

Pull the latest image at its tag and replace it with the same env variables in one run:

docker run --rm \
-v /var/run/docker.sock:/var/run/docker.sock \
containrrr/watchtower \
--run-once healthchecks

You can also remove the old dangling images: docker image prune

Note: We do not endorse the use of Watchtower as a solution to automated updates of existing Docker containers. In fact we generally discourage automated updates. However, this is a useful tool for one-time manual updates of containers where you have forgotten the original parameters. In the long term, we highly recommend using Docker Compose.

Image Update Notifications - Diun (Docker Image Update Notifier)

We recommend Diun for update notifications. Other tools that automatically update containers unattended are not recommended or supported.

Building locally

If you want to make local modifications to these images for development purposes or just to customize the logic:

git clone https://github.com/linuxserver/docker-healthchecks.git
cd docker-healthchecks
docker build \
  --no-cache \
  --pull \
  -t ghcr.io/linuxserver/healthchecks:latest .

The ARM variants can be built on x86_64 hardware using multiarch/qemu-user-static

docker run --rm --privileged multiarch/qemu-user-static:register --reset

Once registered you can define the dockerfile to use with -f Dockerfile.aarch64.

Versions

07.08.21: - Update custom logo handling to support changes in v1.22.0
11.07.21: - Rebase to Alpine 3.14.
18.05.21: - Add linuxserver wheel index.
11.01.21: - Add libffi-dev to allow building of python cryptography lib.
19.07.20: - Rebasing to alpine 3.12, fixed 'ALLOWED_HOSTS' bug, now defaults to wildcard
19.12.19: - Rebasing to alpine 3.11.
31.10.19: - Add postgres client and fix config for CSRF.
23.10.19: - Allow to create superuser
28.06.19: - Rebasing to alpine 3.10.
12.04.19: - Rebase to Alpine 3.9.
23.03.19: - Switching to new Base images, shift to arm32v7 tag.
14.02.19: - Adding mysql libs needed for using a database.
11.10.18: - adding pipeline logic and multi arching release
15.11.17: - git pull is now in Dockerfile so each tagged container contains the same code version
17.10.17: - Fixed local_settings.py output
27.09.17: - Initial Release.

tronyx / docker-healthchecks