Why is image not updated?

[montyz]

I set up a pod with a deployement yaml file like so:

    annotations:
        flux.weave.works/automated: "true"
        flux.weave.works/tag.container-name: "master-*"
    spec:
      containers:
      - name: k8s-mon
        image: index.docker.io/larktech/k8s-mon:latest

I don't need to do anything more than deploy with the annotations to get it to update when a new docker image appears with a name like master-*, right?

Is it a problem that I'm starting from the latest tag? If I put in master-nonexistent and push that to the git repo, will it fail at first and then see that it's not the latest and update it appropriately? Or do I have to create a master-latest tag for that first installation?

[whereismyjetpack]

Hi! Try this:

      annotations:
        flux.weave.works/automated: "true"
        flux.weave.works/tag.k8s-mon: "glob:master-*"
    spec:
      containers:
      - name: k8s-mon
        image: index.docker.io/larktech/k8s-mon:latest

The container name is the name field in the pod spec, and I think you have to specify glob, other semver automation types

[montyz]

OK my first problem was that I didn't understand to replace container-name with the actual name of the container. And maybe latest isn't the right place to start either. So now with this:

unfortunately that didn't work. I now have this:

    metadata:
      labels:
        app: k8s-mon
      annotations:
        flux.weave.works/automated: "true"
        flux.weave.works/tag.k8s-mon: "glob:master-*"
    spec:
      containers:
      - name: k8s-mon
        image: index.docker.io/larktech/k8s-mon:master-c00edf01

And I have a number of master-xxx tags in docker hub that are later than master-c00edf01, however when I deploy it stays at master-c00edf01 and even if I make a change and build a new image after the container started, it doesn't pick it up.

I see in the log of flux:

ts=2018-11-10T16:25:17.550224723Z caller=warming.go:268 component=warmer info="refreshing image" image=index.docker.io/larktech/k8s-mon tag_count=87 to_update=1 of_which_refresh=0 of_which_missing=1
ts=2018-11-10T16:25:17.639791796Z caller=warming.go:350 component=warmer updated=index.docker.io/larktech/k8s-mon successful=1 attempted=1
ts=2018-11-10T16:25:17.640073973Z caller=images.go:17 component=sync-loop msg="polling images"
ts=2018-11-10T16:25:17.67724718Z caller=images.go:27 component=sync-loop msg="no automated services"

so it looks like it wants to update the docker tag, but is reporting "no automated services", so maybe this annotation is incorrect?

      annotations:
        flux.weave.works/automated: "true"

[squaremo]

What kind of resource does the YAML describe, just to check? You say "pod" and also "deployment".

[montyz]

Here's the full yaml:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: k8s-mon
  namespace: admin
spec:
  replicas: 1
  strategy:
    rollingUpdate:
      maxUnavailable: 0
      maxSurge: 50%
  template:
    metadata:
      labels:
        app: k8s-mon
      annotations:
        flux.weave.works/automated: "true"
        flux.weave.works/tag.k8s-mon: "glob:master-*"
    spec:
      volumes:
      - name: secret-volume
        gitRepo:
          repository: https://larkbuildmachine:[email protected]/larktech/dev8a-cluster.git

      containers:
      - name: k8s-mon
        image: index.docker.io/larktech/k8s-mon:master-c00edf01
        volumeMounts:
        - name: secret-volume
          mountPath: /secrets/kube
          subPath: k8s-dev/dev8a-specs/admin/config/kube
          readOnly: true

        - name: secret-volume
          mountPath: /secrets/aws
          subPath: k8s-dev/dev8a-specs/admin/config/aws
          readOnly: true

        - name: secret-volume
          mountPath: /secrets/env
          subPath: k8s-dev/dev8a-specs/admin/config/k8s-mon
          readOnly: true

        ports:
        - name: http-port
          containerPort: 8000
        - name: file-port
          containerPort: 8080

        readinessProbe:
          httpGet:
            path: /status
            port: http-port
          initialDelaySeconds: 3
          periodSeconds: 3
        resources:
          requests:
            memory: 512Mi
          limits:
            memory: 512Mi

      imagePullSecrets:
      - name: myregistrykey

[montyz]

Now that I got fluxctl working I see that my annotations were in the wrong place. I had them in spec.template.metadata.annotations but they need to be in metadata.annotations. Would be nice to have a full yaml file example.

[squaremo]

I had them in spec.template.metadata.annotations but they need to be in metadata.annotations. Would be nice to have a full yaml file example.

That's a good idea; there's only a small section on how to use annotations, which could be its own document.