set a default container in deployments

ewollesen · ewollesen · commit 1596b01764fc · 2025-09-12T13:33:28.000-06:00
How often have you ssh'd into a prod box only to end up on the linkerd
container? It's happened to me too many times.

I found this nifty annotation that can alleviate the problem... Unless
you're trying to get to the linkerd container, in which case you're
back to using `-c linkderd`.
diff --git a/charts/tidepool/charts/auth/templates/1-deployment.yaml b/charts/tidepool/charts/auth/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: auth
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: auth
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/blip/templates/1-deployment.yaml b/charts/tidepool/charts/blip/templates/1-deployment.yaml
@@ -25,8 +25,9 @@ spec:
         app: blip
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: blip
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/blob/templates/1-deployment.yaml b/charts/tidepool/charts/blob/templates/1-deployment.yaml
@@ -22,8 +22,9 @@ spec:
   strategy: {}
   template:
     metadata:
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: blob
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
       labels:
diff --git a/charts/tidepool/charts/clinic-worker/templates/1-deployment.yaml b/charts/tidepool/charts/clinic-worker/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: clinic-worker
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: clinic-worker
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/clinic/templates/1-deployment.yaml b/charts/tidepool/charts/clinic/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: clinic
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: clinic
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/data/templates/1-deployment.yaml b/charts/tidepool/charts/data/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: data
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: data
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/devices/templates/1-deployment.yaml b/charts/tidepool/charts/devices/templates/1-deployment.yaml
@@ -21,8 +21,9 @@ spec:
         app: devices
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: devices
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/export/templates/1-deployment.yaml b/charts/tidepool/charts/export/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: export
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: export
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/gatekeeper/templates/1-deployment.yaml b/charts/tidepool/charts/gatekeeper/templates/1-deployment.yaml
@@ -26,8 +26,9 @@ spec:
         app: gatekeeper
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: gatekeeper
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/highwater/templates/1-deployment.yaml b/charts/tidepool/charts/highwater/templates/1-deployment.yaml
@@ -25,8 +25,9 @@ spec:
         app: highwater
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: highwater
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/hydrophone/templates/1-deployment.yaml b/charts/tidepool/charts/hydrophone/templates/1-deployment.yaml
@@ -22,8 +22,9 @@ spec:
   replicas: {{ .Values.deployment.replicas }}
   template:
     metadata:
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: hydrophone
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
       labels:
diff --git a/charts/tidepool/charts/jellyfish/templates/1-deployment.yaml b/charts/tidepool/charts/jellyfish/templates/1-deployment.yaml
@@ -22,8 +22,9 @@ spec:
   strategy: {}
   template:
     metadata:
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: jellyfish
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
       labels:
diff --git a/charts/tidepool/charts/mailer/templates/1-deployment.yaml b/charts/tidepool/charts/mailer/templates/1-deployment.yaml
@@ -28,8 +28,9 @@ spec:
         app: mailer
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: mailer
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/messageapi/templates/1-deployment.yaml b/charts/tidepool/charts/messageapi/templates/1-deployment.yaml
@@ -25,8 +25,9 @@ spec:
         app: message-api
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: messageapi
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/prescription/templates/1-deployment.yaml b/charts/tidepool/charts/prescription/templates/1-deployment.yaml
@@ -25,8 +25,9 @@ spec:
         app: prescription
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: prescription
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/seagull/templates/1-deployment.yaml b/charts/tidepool/charts/seagull/templates/1-deployment.yaml
@@ -26,8 +26,9 @@ spec:
         app: seagull
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: seagull
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/shoreline/templates/1-deployment.yaml b/charts/tidepool/charts/shoreline/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: shoreline
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: shoreline
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/task/templates/1-deployment.yaml b/charts/tidepool/charts/task/templates/1-deployment.yaml
@@ -27,8 +27,9 @@ spec:
         app: task
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: task
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/tidewhisperer/templates/1-deployment.yaml b/charts/tidepool/charts/tidewhisperer/templates/1-deployment.yaml
@@ -26,8 +26,9 @@ spec:
         app: tide-whisperer
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: tide-whisperer
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/tools/templates/1-deployment.yaml b/charts/tidepool/charts/tools/templates/1-deployment.yaml
@@ -26,8 +26,9 @@ spec:
         app: tools
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: tools
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
diff --git a/charts/tidepool/charts/uploader/templates/1-deployment.yaml b/charts/tidepool/charts/uploader/templates/1-deployment.yaml
@@ -25,8 +25,9 @@ spec:
         app: uploader
         app.kubernetes.io/name: {{ include "charts.name" . }}
         app.kubernetes.io/instance: {{ .Release.Name }}
-{{ if .Values.podAnnotations }}
       annotations:
+        kubectl.kubernetes.io/default-container: uploader
+{{ if .Values.podAnnotations }}
         {{- .Values.podAnnotations | toYaml | nindent 8 }}
 {{- end }}
     spec:
