I have a docker container running my app just fine. When I run the container locally, I'm able to connect to the container and run curl localhost which gives me my expected output.

When I deploy the container to Kubernetes, all seems to go well, but my app isn't accessible. I've been playing with services and ingress trying to figure out why I can't access my application. . . but I think something's wrong a little closer to the center as it were.

When I connect to one of my pods with kubectl exec -it <my pod> /bin/bash and run curl localhost it just hangs. HOWEVER when I run lsof -i :80 on my pod, it finds HHVM listening, just as it should.

hhvm      1 root   27u  IPv6 152606      0t0  TCP *:http (LISTEN)

I thought it might have to do with IPv6, but that turns out to be expected Kubernetes behavior. And when I run kubectl logs <mypod> it spits out all this happy HHVM output just like it should. The last three lines for example. . .

Putting JIT ProfData on Treadmill
Deleting JIT ProfData
Freeing code.prof

. . . imply HHVM is happily doing exactly what it should be doing.

I wondered if something might be wrong with my HHVM/Proxygen configs, but they're super simple. Here they are just in case someone sees something I don't:

/etc/hhvm/server.conf:

; php options

pid = /var/run/hhvm/pid

; hhvm specific 

hhvm.server.port = 80
hhvm.server.type = proxygen 
hhvm.server.allow_run_as_root = true
hhvm.server.default_document = index.php
hhvm.server.error_document404 = index.php
hhvm.repo.central.path = /var/run/hhvm/hhvm.hhbc
hhvm.server.source_root=/var/www/public
hhvm.profile_hw_enable=false

; default log location is stdout/err, which is good for docker
hhvm.log.use_log_file = true

HHVM is the stock Docker image from Facebook, with my app copied into /var/www at build time.

My Kubernetes yaml follows:

apiVersion: v1
kind: Service
metadata:
  name: myprojectservice
spec:
  ports:
  - port: 80
    targetPort: 80
  selector:
    app: hhvm 
---
 apiVersion: apps/v1
 kind: Deployment 
 metadata:
   name: myproject
   labels:
     app: hhvm
 spec:
  replicas: 2 
  selector:
    matchLabels:
      app: hhvm 
  template:
    metadata:
      labels:
        app: hhvm
    spec:
      containers:
        - name: myproject
          image: meatdockerhub/myproject
          imagePullPolicy: Always
          ports:
            - containerPort: 80