Automatically inject annotations and labels?

Consul
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1

Is there any way to automatically inject annotations and labels? I’m using helm charts for this, maybe I can pipe it to kubectl with kustomize? Anyone do this?

2

I am currently using helmfile, a really awesome tool that is great for automating helm charts and kustomize. I found a feature that can allow me to patch features that don’t exist in the current helmchart.

As an example:

repositories:
  # https://artifacthub.io/packages/helm/hashicorp/consul
  - name: hashicorp
    url: https://helm.releases.hashicorp.com
  # https://artifacthub.io/packages/helm/dgraph/dgraph/0.0.19
  - name: dgraph
    url: https://charts.dgraph.io

releases:
  - name: consul
    namespace: consul
    chart: hashicorp/consul
    version: 0.48.0
    values:
      - global:
          name: consul
        connectInject:
          enabled: true
        controller:
          enabled: true

  - name: dgraph
    namespace: dgraph
    chart: dgraph/dgraph
    version: 0.0.19
    values:
      - image:
          tag: v21.03.2
        zero:
          extraAnnotations:
            consul.hashicorp.com/connect-inject: 'true'
            consul.hashicorp.com/transparent-proxy: 'true'
        alpha:
          extraAnnotations:
            consul.hashicorp.com/connect-inject: 'true'
            consul.hashicorp.com/transparent-proxy: 'true'
          configFile:
            config.yaml: |
              security:
                whitelist: {{ env "DG_ACCEPT_LIST" | default "0.0.0.0/0" | quote }}
          service:
            type: ClusterIP
    strategicMergePatches:
      - apiVersion: v1
        kind: Service
        metadata:
          name: dgraph-dgraph-alpha-headless
          labels:
            consul.hashicorp.com/service-ignore: 'true'
      - apiVersion: v1
        kind: Service
        metadata:
          name: dgraph-dgraph-zero-headless
          labels:
            consul.hashicorp.com/service-ignore: 'true'

To install CSM (consul connect) with Dgraph using the service mesh:

helmfile apply