Hello, Knative new world!

As you might have guessed, this WordPress site is hosted using https://knative.dev/ (in particular, the serving component).

I’ll write up more about how this is done later, but for now, I’m going to post a quick outline of how I got this site working.

I started with this Dockerfile:

FROM wordpress:5.6

ADD nanospace /var/www/html/wp-content/themes/nanospace

And then I ran the resulting image locally and connected to the database using the web UI (maybe a bad idea, but it got things working). I then pushed the docker image to dockerhub (since it didn’t have secrets in it when I created it, just the new theme), and wrote the following Knative Service, based on the information on the DockerHub WordPress image.

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: wordpress
  namespace: wordpress
spec:
  template:
    spec:
      containers:
      - image: ekanderson/evan-nanospace
        env:
        - name: WORDPRESS_DB_HOST
          value: mysql-db-mysql
        - name: WORDPRESS_DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-root
              key: PASSWORD
        - name: WORDPRESS_DB_USER
          value: wordpress
        - name: WORDPRESS_DB_NAME
          value: wordpress_db
        - name: HTTP_X_FORWARDED_PROTO
          value: https
        ports:
        - containerPort: 80

This used my existing Knative installation to run wordpress, but I kept getting redirected to https://....:8080, rather than loading the site. Eventually, I figured out that I needed to update the wp_options table in the database, like so:

update wp_options SET option_value = 'https://wordpress.wordpress.microkn.off-by-one.dev'  WHERE option_name = 'siteurl';
update wp_options SET option_value = 'https://wordpress.wordpress.microkn.off-by-one.dev'  WHERE option_name = 'home';

I’ll be updating this with more background another night… it’s almost midnight!