Add experimental Dockerfile and docker-compose.yml

CHANGELOG.md

@@ -11,6 +11,7 @@ All notable changes to this project will be documented in this file.
 - Add Signal integration (#428)
 - Change Zulip onboarding, ask for the zuliprc file (#202)
 - Add a section in Docs about running self-hosted instances
+- Add experimental Dockerfile and docker-compose.yml
 
 ## Bug Fixes
 - Fix unwanted HTML escaping in SMS and WhatsApp notifications

docker/Dockerfile

@@ -0,0 +1,22 @@
+FROM python:3.8
+
+RUN useradd --system hc
+ENV PYTHONUNBUFFERED=1
+WORKDIR /opt/healthchecks
+
+COPY requirements.txt /tmp
+RUN \
+    pip install --no-cache-dir -r /tmp/requirements.txt && \
+    pip install uwsgi
+
+COPY . /opt/healthchecks/
+
+RUN \
+    rm -f /opt/healthchecks/hc/local_settings.py && \
+    DEBUG=False SECRET_KEY=build-key ./manage.py collectstatic --noinput && \
+    DEBUG=False SECRET_KEY=build-key ./manage.py compress
+
+USER hc
+
+CMD [ "uwsgi", "/opt/healthchecks/docker/uwsgi.ini"]
+

docker/docker-compose.yml

@@ -0,0 +1,34 @@
+version: "3"
+volumes:
+    db-data:
+
+services:
+  db:
+    image: postgres:12
+    volumes:
+      - db-data:/var/lib/postgresql
+    environment:
+      - POSTGRES_DB=hc
+      - POSTGRES_PASSWORD=fixme-postgres-password
+  web:
+    build:
+        context: ..
+        dockerfile: docker/Dockerfile
+    environment:
+        - DEBUG=False
+        - DB=postgres
+        - DB_HOST=db
+        - DB_PORT=5432
+        - DB_PASSWORD=fixme-postgres-password
+        - DEFAULT_FROM_EMAIL=healthchecks.io@healthchecks.io
+        - EMAIL_HOST=fixme-smtp-server.example.org
+        - EMAIL_HOST_USER=fixme-smtp-username
+        - EMAIL_HOST_PASSWORD=fixme-smtp-password
+        - SECRET_KEY=fixme-secret-key
+        - SITE_ROOT=http://localhost:8000
+    ports:
+        - 8000:8000
+    depends_on:
+        - db
+    command: bash -c 'while !</dev/tcp/db/5432; do sleep 1; done; uwsgi /opt/healthchecks/docker/uwsgi.ini'
+

docker/uwsgi.ini

@@ -0,0 +1,18 @@
+[uwsgi]
+master
+die-on-term
+http-socket = :8000
+harakiri = 10
+post-buffering = 4096
+processes = 4
+enable-threads
+threads = 1
+chdir = /opt/healthchecks
+module = hc.wsgi:application
+thunder-lock
+disable-write-exception
+static-map = /static=/opt/healthchecks/static-collected
+
+hook-pre-app = exec:./manage.py migrate
+attach-daemon = ./manage.py sendalerts
+attach-daemon = ./manage.py sendreports --loop

templates/docs/configuring_prometheus.html

@@ -1,5 +1,5 @@
 <h1>Configuring Prometheus</h1>
-<p>Healthchecks.io supports exporting metrics and check statuses to
+<p>SITE_NAME supports exporting metrics and check statuses to
 <a href="https://prometheus.io/">Prometheus</a>, for use with <a href="https://grafana.com/">Grafana</a>.</p>
 <p>You can generate the metrics export endpoint by going to your project settings
 and clicking "Create API Keys." You will then see the link to

templates/docs/configuring_prometheus.md

@@ -1,6 +1,6 @@
 # Configuring Prometheus
 
-Healthchecks.io supports exporting metrics and check statuses to
+SITE_NAME supports exporting metrics and check statuses to
 [Prometheus](https://prometheus.io/), for use with [Grafana](https://grafana.com/).
 
 You can generate the metrics export endpoint by going to your project settings

templates/docs/self_hosted_docker.html

@@ -0,0 +1,34 @@
+<h1>Running with Docker</h1>
+<p>In the Healthchecks source code, <a href="https://github.com/healthchecks/healthchecks/tree/master/docker">/docker/ directory</a>,
+you can find a sample configuration for running the project with
+<a href="https://www.docker.com">Docker</a> and <a href="https://docs.docker.com/compose/">Docker Compose</a>.</p>
+<p><strong>Note: The Docker configuration is a recent addition, and, for the time being,
+should be considered highly experimental</strong>.</p>
+<p>Note: For the sake of simplicity, the sample configuration starts a single database
+node and a single web server node, both on the same host. It also does not handle SSL
+termination. If you plan to expose it to the public internet, make sure you put a
+SSL-terminating load balancer or reverse proxy in front of it.</p>
+<h2>Getting Started</h2>
+<ul>
+<li>Grab the Healthchecks source code
+  <a href="https://github.com/healthchecks/healthchecks">from the Github repository</a>.</li>
+<li>Edit the <code>/docker/docker-compose.yml</code> file; add your SMTP credentials
+  and any other needed <a href="../self_hosted_configuration/">environment variables</a>.</li>
+<li>
+<p>Create and start containers:</p>
+<div class="highlight"><pre><span></span><code>$ <span class="nb">cd</span> docker
+$ docker-compose up
+</code></pre></div>
+
+</li>
+<li>
+<p>Create a superuser:</p>
+<div class="highlight"><pre><span></span><code>$ docker-compose run web /opt/healthchecks/manage.py createsuperuser
+</code></pre></div>
+
+</li>
+<li>
+<p>Open <a href="http://localhost:8000">http://localhost:8000</a> in your browser and log in with
+  the credentials from the previous step.</p>
+</li>
+</ul>

templates/docs/self_hosted_docker.md

@@ -0,0 +1,31 @@
+# Running with Docker
+
+In the Healthchecks source code, [/docker/ directory](https://github.com/healthchecks/healthchecks/tree/master/docker),
+you can find a sample configuration for running the project with
+[Docker](https://www.docker.com) and [Docker Compose](https://docs.docker.com/compose/).
+
+**Note: The Docker configuration is a recent addition, and, for the time being,
+should be considered highly experimental**.
+
+Note: For the sake of simplicity, the sample configuration starts a single database
+node and a single web server node, both on the same host. It also does not handle SSL
+termination. If you plan to expose it to the public internet, make sure you put a
+SSL-terminating load balancer or reverse proxy in front of it.
+
+## Getting Started
+
+* Grab the Healthchecks source code
+  [from the Github repository](https://github.com/healthchecks/healthchecks).
+* Edit the `/docker/docker-compose.yml` file; add your SMTP credentials
+  and any other needed [environment variables](../self_hosted_configuration/).
+* Create and start containers:
+
+        $ cd docker
+        $ docker-compose up
+
+* Create a superuser:
+
+        $ docker-compose run web /opt/healthchecks/manage.py createsuperuser
+
+* Open [http://localhost:8000](http://localhost:8000) in your browser and log in with
+  the credentials from the previous step.

templates/front/base_docs.html

@@ -45,6 +45,7 @@
         <li class="nav-header">Self-hosted</li>
         {% include "front/docs_nav_item.html" with slug="self_hosted" title="Overview" %}
         {% include "front/docs_nav_item.html" with slug="self_hosted_configuration" title="Configuration" %}
+        {% include "front/docs_nav_item.html" with slug="self_hosted_docker" title="Running with Docker" %}
 
         <li class="nav-header">Reference</li>
         <li><a href="{% url 'hc-docs-cron' %}">Cron syntax cheatsheet</a></li>