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|.github/workflows||5 months ago|
|docker||6 days ago|
|hc||1 day ago|
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|LICENSE||2 years ago|
|README.md||6 days ago|
|manage.py||6 years ago|
|requirements.txt||3 weeks ago|
Healthchecks is a cron job monitoring service. It listens for HTTP requests and email messages ("pings") from your cron jobs and scheduled tasks ("checks"). When a ping does not arrive on time, Healthchecks sends out alerts.
Healthchecks comes with a web dashboard, API, 25+ integrations for delivering notifications, monthly email reports, WebAuthn 2FA support, team management features: projects, team members, read-only access.
The building blocks are:
- Python 3.6+
- Django 3
- PostgreSQL or MySQL
Healthchecks is licensed under the BSD 3-clause license.
Healthchecks is available as a hosted service at https://healthchecks.io/.
Setting Up for Development
To set up Healthchecks development environment:
Install dependencies (Debian/Ubuntu):
$ sudo apt-get update $ sudo apt-get install -y gcc python3-dev python3-venv libpq-dev
Prepare directory for project code and virtualenv. Feel free to use a different location:
$ mkdir -p ~/webapps $ cd ~/webapps
Prepare virtual environment (with virtualenv you get pip, we'll use it soon to install requirements):
$ python3 -m venv hc-venv $ source hc-venv/bin/activate $ pip3 install wheel # make sure wheel is installed in the venv
Check out project code:
$ git clone https://github.com/healthchecks/healthchecks.git
Install requirements (Django, ...) into virtualenv:
$ pip install -r healthchecks/requirements.txt
Create database tables and a superuser account:
$ cd ~/webapps/healthchecks $ ./manage.py migrate $ ./manage.py createsuperuser
With the default configuration, Healthchecks stores data in a SQLite file
hc.sqlitein the checkout directory (
To use PostgreSQL or MySQL, see the section Database Configuration section below.
$ ./manage.py test
Run development server:
$ ./manage.py runserver
The site should now be running at
To access Django administration site, log in as a superuser, then
Healthchecks reads configuration from environment variables.
Accessing Administration Panel
Healthchecks comes with Django's administration panel where you can manually view and modify user accounts, projects, checks, integrations etc. To access it,
- if you haven't already, create a superuser account:
- log into the site using superuser credentials
- in the top navigation, "Account" dropdown, select "Site Administration"
Healthchecks must be able to send email messages, so it can send out login links and alerts to users. Specify your SMTP credentials using the following environment variables:
EMAIL_HOST = "your-smtp-server-here.com" EMAIL_PORT = 587 EMAIL_HOST_USER = "smtp-username" EMAIL_HOST_PASSWORD = "smtp-password" EMAIL_USE_TLS = True
For more information, have a look at Django documentation, Sending Email section.
Healthchecks comes with a
smtpd management command, which starts up a
SMTP listener service. With the command running, you can ping your
checks by sending email messages
email@example.com email addresses.
Start the SMTP listener on port 2525:
$ ./manage.py smtpd --port 2525
Send a test email:
$ curl --url 'smtp://127.0.0.1:2525' \ --mail-from 'firstname.lastname@example.org' \ --mail-rcpt 'email@example.com' \ -F '='
Sending Status Notifications
healtchecks comes with a
sendalerts management command, which continuously
polls database for any checks changing state, and sends out notifications as
needed. Within an activated virtualenv, you can manually run
sendalerts command like so:
$ ./manage.py sendalerts
In a production setup, you will want to run this command from a process manager like supervisor or systemd.
With time and use the Healthchecks database will grow in size. You may decide to prune old data: inactive user accounts, old checks not assigned to users, records of outgoing email messages and records of received pings. There are separate Django management commands for each task:
Remove old records from
api_pingtable. For each check, keep 100 most recent pings:
$ ./manage.py prunepings
Note: 100 is the default value but you can configure a different limit per-user. To do that, go to the Administration Panel, look up user's Profile and modify its "Ping log limit" field.
Remove old records of sent notifications. For each check, remove notifications that are older than the oldest stored ping for same check.
$ ./manage.py prunenotifications
Remove user accounts that match either of these conditions:
Account was created more than 6 months ago, and user has never logged in. These can happen when user enters invalid email address when signing up.
Last login was more than 6 months ago, and the account has no checks. Assume the user doesn't intend to use the account any more and would probably want it removed.
$ ./manage.py pruneusers
Remove old records from the
api_tokenbuckettable. The TokenBucket model is used for rate-limiting login attempts and similar operations. Any records older than one day can be safely removed.
$ ./manage.py prunetokenbucket
Remove old records from the
api_fliptable. The Flip objects are used to track status changes of checks, and to calculate downtime statistics month by month. Flip objects from more than 3 months ago are not used and can be safely removed.
$ ./manage.py pruneflips
When you first try these commands on your data, it is a good idea to test them on a copy of your database, not on the live database right away. In a production setup, you should also have regular, automated database backups set up.
Healthchecks optionally supports two-factor authentication using the WebAuthn
standard. To enable WebAuthn support, set the
RP_ID (relying party identifier )
setting to a non-null value. Set its value to your site's domain without scheme
and without port. For example, if your site runs on
Note that WebAuthn requires HTTPS, even if running on localhost. To test WebAuthn
locally with a self-signed certificate, you can use the
Healthchecks supports external authentication by means of HTTP headers set by reverse proxies or the WSGI server. This allows you to integrate it into your existing authentication system (e.g., LDAP or OAuth) via an authenticating proxy. When this option is enabled, healtchecks will trust the header's value implicitly, so it is very important to ensure that attackers cannot set the value themselves (and thus impersonate any user). How to do this varies by your chosen proxy, but generally involves configuring it to strip out headers that normalize to the same name as the chosen identity header.
To enable this feature, set the
REMOTE_USER_HEADER value to a header you wish to
authenticate with. HTTP headers will be prefixed with
HTTP_ and have any dashes
converted to underscores. Headers without that prefix can be set by the WSGI server
itself only, which is more secure.
REMOTE_USER_HEADER is set, Healthchecks will:
- assume the header contains user's email address
- look up and automatically log in the user with a matching email address
- automatically create an user account if it does not exist
- disable the default authentication methods (login link to email, password)
To enable the Slack "self-service" integration, you will need to create a "Slack App".
To do so:
- Create a new Slack app on https://api.slack.com/apps/
- Add at least one scope in the permissions section to be able to deploy the app in your workspace (By example
Bot Token Scopeshttps://api.slack.com/apps/APP_ID/oauth?).
- Add a redirect url in the format
SITE_ROOT/integrations/add_slack_btn/. For example, if your SITE_ROOT is
https://my-hc.example.orgthen the redirect URL would be
- Look up your Slack app for the Client ID and Client Secret at https://api.slack.com/apps/APP_ID/general? . Put them
To enable Discord integration, you will need to:
- register a new application on https://discordapp.com/developers/applications/me
- add a redirect URI to your Discord application. The URI format is
SITE_ROOT/integrations/add_discord/. For example, if you are running a development server on
localhost:8000then the redirect URI would be
- Look up your Discord app's Client ID and Client Secret. Put them
Pushover integration works by creating an application on Pushover.net which is then subscribed to by Healthchecks users. The registration workflow is as follows:
- On Healthchecks, the user adds a "Pushover" integration to a project
- Healthchecks redirects user's browser to a Pushover.net subscription page
- User approves adding the Healthchecks subscription to their Pushover account
- Pushover.net HTTP redirects back to Healthchecks with a subscription token
- Healthchecks saves the subscription token and uses it for sending Pushover notifications
To enable the Pushover integration, you will need to:
- Register a new application on Pushover via https://pushover.net/apps/build.
- Within the Pushover 'application' configuration, enable subscriptions.
Make sure the subscription type is set to "URL". Also make sure the redirect
URL is configured to point back to the root of the Healthchecks instance
- Put the Pushover application API Token and the Pushover subscription URL in
PUSHOVER_SUBSCRIPTION_URLenvironment variables. The Pushover subscription URL should look similar to
Healthchecks uses signal-cli to send Signal notifications. Healthcecks interacts with signal-cli over DBus.
To enable the Signal integration:
- Set up and configure signal-cli to listen on DBus system bus (instructions).
Make sure you can send test messages from command line, using the
dbus-sendexample given in the signal-cli instructions.
- Set the
SIGNAL_CLI_ENABLEDenvironment variable to
Create a Telegram bot by talking to the BotFather. Set the bot's name, description, user picture, and add a "/start" command.
After creating the bot you will have the bot's name and token. Put them in
settelegramwebhookmanagement command. This command tells Telegram where to forward channel messages by invoking Telegram's setWebhook API call:
$ ./manage.py settelegramwebhook Done, Telegram's webhook set to: https://my-monitoring-project.com/integrations/telegram/bot/
For this to work, your
SITE_ROOT needs to be correct and use "https://"
To enable Apprise integration, you will need to:
- ensure you have apprise installed in your local environment:
pip install apprise
- enable the apprise functionality by setting the
The "Shell Commands" integration runs user-defined local shell commands when checks
go up or down. This integration is disabled by default, and can be enabled by setting
SHELL_ENABLED environment variable to
Note: be careful when using "Shell Commands" integration, and only enable it when
you fully trust the users of your Healthchecks instance. The commands will be executed
manage.py sendalerts process, and will run with the same system permissions as
To enable the Matrix integration you will need to:
- Register a bot user (for posting notifications) in your preferred homeserver.
- Use the Login API call to retrieve bot user's access token. You can run it as shown in the documentation, using curl in command shell.
- Set the
MATRIX_environment variables. Example:
MATRIX_HOMESERVER=https://matrix.org MATRIX_USER_ID=@mychecks:matrix.org MATRIX_ACCESS_TOKEN=[a long string of characters returned by the login call]
PagerDuty Simple Install Flow
To enable PagerDuty Simple Install Flow,
- Register a PagerDuty app at PagerDuty › Developer Mode › My Apps
- In the newly created app, add the "Events Integration" functionality
- Specify a Redirect URL:
- Copy the displayed app_id value (PXXXXX) and put it in the
Running in Production
Here is a non-exhaustive list of pointers and things to check before launching a Healthchecks instance in production.
- Environment variables, settings.py and local_settings.py.
- DEBUG. Make sure it is set to
- ALLOWED_HOSTS. Make sure it contains the correct domain name you want to use.
- Server Errors. When DEBUG=False, Django will not show detailed error pages, and will not print exception tracebacks to standard output. To receive exception tracebacks in email, review and edit the ADMINS and SERVER_EMAIL settings. Another good option for receiving exception tracebacks is to use Sentry.
- DEBUG. Make sure it is set to
- Management commands that need to be run during each deployment.
- This project uses Django Compressor
to combine the CSS and JS files. It is configured for offline compression – run the
manage.py compresscommand whenever files in the
- This project uses Django's staticfiles app.
manage.py collectstaticcommand whenever files in the
/static/directory change. This command collects all the static files inside the
static-collecteddirectory. Configure your web server to serve files from this directory under the
- Database migration should be run after each update to make sure the database schemas are up to date. You can do that with
- This project uses Django Compressor to combine the CSS and JS files. It is configured for offline compression – run the
- Processes that need to be running constantly.
- Make sure the database is secured well and is getting backed up regularly
- Make sure the TLS certificates are secured well and are getting refreshed regularly
- Have monitoring in place to be sure the Healthchecks instance itself is operational (is accepting pings, is sending out alerts, is not running out of resources).