feat: standardize labelling in Helm chart to facilitate log consumption

k8s/charts/deluge/templates/_helpers.tpl

@@ -15,12 +15,20 @@ Expand the name of the chart.
 {{- end -}}
 
 {{- define "deluge.pvc" }}
-{{- default (printf "deluge-%s-pvc" .Release.Name) .Values.deployment.pvcName }}
+{{- default (printf "deluge-%s-pvc" (include "experiment.fullId" .)) .Values.deployment.pvcName }}
 {{- end -}}
 
-{{- define "tracker.service.name" }}
+{{- define "experiment.groupId" -}}
-{{- printf "bittorrent-tracker-%s" .Release.Name -}}
+{{- required "A valid .Values.experiment.groupId is required!" .Values.experiment.groupId }}
-{{- end -}}
+{{- end }}
+
+{{- define "experiment.id"  -}}
+{{- default .Release.Name .Values.experiment.id }}
+{{- end }}
+
+{{- define "experiment.fullId" -}}
+{{- printf "%s-%s" (include "experiment.id" .) (include "experiment.groupId" .) }}
+{{- end }}
 
 {{/*
 Common and selector labels.
@@ -43,6 +51,6 @@ app.kubernetes.io/managed-by: {{ .Release.Service }}
 {{- end }}
 
 {{- define "deluge-benchmarks.selectorLabels" -}}
-app.kubernetes.io/name: {{ include "app.name" . }}
+app.kubernetes.io/instance: {{ include "experiment.id" . }}
-app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/part-of: {{ include "experiment.groupId" . }}
 {{- end }}

k8s/charts/deluge/templates/deluge-service.yaml

@@ -1,15 +1,16 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: deluge-nodes-{{ .Release.Name }}-service
+  name: deluge-nodes-service-{{ include "experiment.fullId" . }}
   namespace: {{ .Release.Namespace }}
   labels:
-    app: deluge-nodes-{{ .Release.Name }}
+    app.kubernetes.io/name: deluge-nodes-service
     {{- include "deluge-benchmarks.labels" . | nindent 4}}
 spec:
   clusterIP: None
   selector:
-    app: deluge-nodes-{{ .Release.Name }}
+    app.kubernetes.io/name: deluge-node
+    {{- include "deluge-benchmarks.selectorLabels" . | nindent 4}}
   ports:
     - port: 6890
       name: rpc

k8s/charts/deluge/templates/deluge-statefulset.yaml

@@ -1,32 +1,34 @@
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
-  name: deluge-nodes-{{ .Release.Name }}
+  name: deluge-nodes-{{ include "experiment.fullId" . }}
   namespace: {{ .Release.Namespace }}
 
 spec:
   replicas: {{ .Values.experiment.networkSize }}
-  serviceName: deluge-nodes-{{ .Release.Name }}-service
+  serviceName: deluge-nodes-service-{{ include "experiment.fullId" . }}
   podManagementPolicy: Parallel
   selector:
     matchLabels:
-      app: deluge-nodes-{{ .Release.Name }}
+      app.kubernetes.io/name: deluge-node
       {{- include "deluge-benchmarks.selectorLabels" . | nindent 6 }}
 
   template:
     metadata:
       labels:
-        app: deluge-nodes-{{ .Release.Name }}
+        app.kubernetes.io/name: deluge-node
         {{- include "deluge-benchmarks.labels" . | nindent 8 }}
 
     spec:
       containers:
-        - name: deluge-{{ .Release.Name }}
+        - name: deluge-node
           image: codexstorage/deluge
           imagePullPolicy: Always
           ports:
             - containerPort: 6890
           env:
+            - name: EXPERIMENT_GROUP_ID
+              value: {{ include "experiment.groupId" . }}
             - name: CLIENT_POD_NAME
               valueFrom:
                 fieldRef:
@@ -40,7 +42,7 @@ spec:
           command: [ "/bin/bash", "--login", "-c" ]
           args:
             - |
-              export DELUGE_NODE_ID=${CLIENT_POD_NAME}
+              export DELUGE_NODE_ID=${CLIENT_POD_NAME}-${EXPERIMENT_GROUP_ID}
               # Sadly we can't mount a subpath, so need add the correct prefix
               # into all of the config directories.
               export DELUGE_CONFIG_DIR=/var/lib/deluge/${CLIENT_POD_NAME}

k8s/charts/deluge/templates/testrunner-job.yaml

@@ -1,22 +1,22 @@
 apiVersion: batch/v1
 kind: Job
 metadata:
-  name: deluge-{{ .Release.Name }}-testrunner
+  name: deluge-experiment-runner-{{ include "experiment.fullId" . }}
   namespace: {{ .Release.Namespace }}
   labels:
-    app: deluge-{{ .Release.Name }}-testrunner
+    app.kubernetes.io/name: deluge-experiment-runner
     {{- include "deluge-benchmarks.labels" . | nindent 4 }}
 
 spec:
   template:
     metadata:
       labels:
-        app: deluge-{{ .Release.Name }}-testrunner
+        app.kubernetes.io/name: deluge-experiment-runner
         {{- include "deluge-benchmarks.labels" . | nindent 8 }}
 
     spec:
       containers:
-        - name: deluge-{{ .Release.Name }}-testrunner
+        - name: deluge-experiment-runner
           image: codexstorage/bittorrent-benchmarks:latest
           imagePullPolicy: Always
           args: [ "run", "deluge_experiment" ]
@@ -32,13 +32,13 @@ spec:
             - name: FILE_SIZE
               value: {{ include "filesize.bytes" . | quote }}
             - name: TRACKER_ANNOUNCE_URL
-              value: "http://{{ include "tracker.service.name" . }}.{{ .Release.Namespace }}.svc.cluster.local:8000/announce"
+              value: "http://bittorrent-tracker-service-{{ include "experiment.fullId" . }}.{{ .Release.Namespace }}.svc.cluster.local:8000/announce"
             - name: SHARED_VOLUME_PATH
               value: "/opt/bittorrent-benchmarks/volume"
             - name: DELUGE_STATEFULSET
-              value: "deluge-nodes-{{ .Release.Name }}"
+              value: "deluge-nodes-{{ include "experiment.fullId" . }}"
             - name: DELUGE_SERVICE
-              value: "deluge-nodes-{{ .Release.Name }}-service"
+              value: "deluge-nodes-service-{{ include "experiment.fullId" . }}"
             - name: NAMESPACE
               valueFrom:
                 fieldRef:

k8s/charts/deluge/templates/tracker-deployment.yaml

@@ -1,28 +1,28 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  name: bittorrent-tracker-{{ .Release.Name }}
+  name: bittorrent-tracker-{{ include "experiment.fullId" . }}
   namespace: {{ .Release.Namespace }}
   labels:
-    app: bittorrent-tracker-{{ .Release.Name }}
+    app.kubernetes.io/name: bittorrent-tracker
     {{- include "deluge-benchmarks.labels" . | nindent 4 }}
 
 spec:
   replicas: 1
   selector:
     matchLabels:
-      app: bittorrent-tracker-{{ .Release.Name }}
+      app.kubernetes.io/name: bittorrent-tracker
       {{- include "deluge-benchmarks.selectorLabels" . | nindent 6 }}
 
   template:
     metadata:
       labels:
-        app: bittorrent-tracker-{{ .Release.Name }}
+        app.kubernetes.io/name: bittorrent-tracker
         {{- include "deluge-benchmarks.labels" . | nindent 8 }}
 
     spec:
       containers:
-        - name: bittorrent-tracker-{{ .Release.Name }}
+        - name: bittorrent-tracker
           image: codexstorage/bittorrent-tracker
           ports:
             - containerPort: 8000

k8s/charts/deluge/templates/tracker-service.yaml

@@ -1,10 +1,10 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: {{ include "tracker.service.name" . }}
+  name: bittorrent-tracker-service-{{ include "experiment.fullId" . }}
   namespace: {{ .Release.Namespace }}
   labels:
-    app: tracker-{{ .Release.Name }}
+    app.kubernetes.io/name: bittorrent-tracker-service
     {{- include "deluge-benchmarks.labels" . | nindent 4 }}
 
 spec:
@@ -14,5 +14,5 @@ spec:
       targetPort: 8000
       protocol: TCP
   selector:
-    app: bittorrent-tracker-{{ .Release.Name }}
+    app.kubernetes.io/name: bittorrent-tracker
     {{- include "deluge-benchmarks.selectorLabels" . | nindent 4 }}

k8s/charts/deluge/values.yaml

@@ -5,6 +5,14 @@ experiment:
   seederSets: 4
   repetitions: 10
 
+  # Experiments are ran as part of groups which may entail several invocations for this Helm chart.
+  # We therefore identify both the experiment within a group, and the group itself.
+
+  # Identifies the experiment within the group. If left empty, defaults to the release name.
+  id: ""
+  # Identifies the experiment group. Needs to be defined by the user.
+  groupId: ""
+
 deployment:
   pvcName: ""
   appName: ""