Agent subscriber failing to get deployments - charts missing labels

[laurodias]

Summary

Litmus agents helm charts are missing required label for subscriber get pods status.

After updating Litmus Server & Agents to version v3.24.0, subscriber started throwing following error messages and restarting:

litmus-agent-subscriber-5486df548d-s6ct2 subscriber time="2025-12-22T13:26:12Z" level=error msg="failed to get deployments pods litmuschaos.io/app=chaos-exporter , err : pods not found"
litmus-agent-subscriber-5486df548d-s6ct2 subscriber time="2025-12-22T13:26:12Z" level=error msg="failed to get deployments pods litmuschaos.io/app=chaos-operator , err : pods not found"
litmus-agent-subscriber-5486df548d-s6ct2 subscriber time="2025-12-22T13:26:12Z" level=error msg="failed to get deployments pods litmuschaos.io/app=event-tracker , err : pods not found"
litmus-agent-subscriber-5486df548d-s6ct2 subscriber time="2025-12-22T13:26:12Z" level=error msg="failed to get deployments pods litmuschaos.io/app=workflow-controller , err : pods not found"
litmus-agent-subscriber-5486df548d-s6ct2 subscriber time="2025-12-22T13:26:42Z" level=fatal msg="all components failed to startup"

The issue happens because none of the deployments, except for agent-subscriber, have the label litmuschaos.io/app set. On subscriber chart the selectorLabels template (which is also included in the common labels template) is defined as follows:

{{/*
Selector labels
*/}}
{{- define "subscriber.selectorLabels" -}}
litmuschaos.io/app: {{ .Chart.Name }}
app: subscriber
app.kubernetes.io/name: {{ include "subscriber.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end }}

On all other charts the referred label is missing, eg:

{{/*
Selector labels
*/}}
{{- define "event-tracker.selectorLabels" -}}
app: {{ .Chart.Name }}
app.kubernetes.io/name: {{ include "event-tracker.name" . }}
app.kubernetes.io/instance: {{ .Release.Name }}
{{- end }}

This is how the COMPONENTS key looks like in the subscriber-config configMap:

apiVersion: v1
data:
  COMPONENTS: 'DEPLOYMENTS: ["litmuschaos.io/app=chaos-exporter", "litmuschaos.io/app=chaos-operator",
    "litmuschaos.io/app=event-tracker", "litmuschaos.io/app=workflow-controller"]'

selectorLabels templates for reference: chaos-exporter, chaos-operator, event-tracker, workflow-controller

Proposed solution

Update all charts to include the missing label.

Workaround

Update Helm values for every agent (subscriber not needed) and include the litmuschaos.io/app label. For example:

chaos-operator:
  enabled: true
  customLabels:
    litmuschaos.io/app: chaos-operator

chaos-exporter:
  enabled: true
  customLabels:
    litmuschaos.io/app: chaos-exporter

event-tracker:
  enabled: true
  customLabels:
    litmuschaos.io/app: event-tracker

subscriber:
  enabled: true

workflow-controller:
  enabled: true
  crds:
    create: true
  customLabels:
    litmuschaos.io/app: workflow-controller

[laurodias]

Apparently the issue was introduced with #464

[TusharMohapatra07]

Hey Maintainers! I have made a PR addressing this issue. Please take a look :)