helm: add option for external db (#15722)

chart/Chart.yaml

@@ -30,6 +30,7 @@ dependencies:
   - name: postgresql
     version: "8.x.x"
     repository: https://charts.bitnami.com/bitnami
+    condition: postgresql.enabled
   - name: redis
     version: "10.x.x"
     repository: https://charts.bitnami.com/bitnami

chart/templates/configmap-env.yaml

@@ -5,7 +5,11 @@ metadata:
   labels:
     {{- include "mastodon.labels" . | nindent 4 }}
 data:
+  {{- if .Values.postgresql.enabled }}
   DB_HOST: {{ template "mastodon.postgresql.fullname" . }}
+  {{- else }}
+  DB_HOST: {{ .Values.postgresql.postgresqlHostname }}
+  {{- end }}
   DB_NAME: {{ .Values.postgresql.postgresqlDatabase }}
   DB_POOL: {{ .Values.application.sidekiq.concurrency | quote }}
   DB_PORT: "5432"

chart/templates/cronjob-media-remove.yaml

@@ -55,7 +55,7 @@ spec:
                       {{- if .Values.postgresql.enabled }}
                       name: {{ .Release.Name }}-postgresql
                       {{- else }}
-                      name: {{ template "mastodon.fullname" . }}-postgresql
+                      name: {{ template "mastodon.fullname" . }}
                       {{- end }}
                       key: postgresql-password
                 - name: "REDIS_PASSWORD"

chart/templates/deployment-sidekiq.yaml

@@ -73,7 +73,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/deployment-streaming.yaml

@@ -43,7 +43,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/deployment-web.yaml

@@ -59,7 +59,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/job-assets-precompile.yaml

@@ -53,7 +53,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/job-chewy-upgrade.yaml

@@ -54,7 +54,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/job-create-admin.yaml

@@ -59,7 +59,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/job-db-migrate.yaml

@@ -53,7 +53,11 @@ spec:
             - name: "DB_PASS"
               valueFrom:
                 secretKeyRef:
+                  {{- if .Values.postgresql.enabled }}
                   name: {{ .Release.Name }}-postgresql
+                  {{- else }}
+                  name: {{ template "mastodon.fullname" . }}
+                  {{- end }}
                   key: postgresql-password
             - name: "REDIS_PASSWORD"
               valueFrom:

chart/templates/secrets.yaml

@@ -26,3 +26,6 @@ data:
   {{- else }}
   VAPID_PUBLIC_KEY: {{ required "vapid.public_key is required" .Values.secrets.vapid.public_key }}
   {{- end }}
+  {{- if not .Values.postgresql.enabled }}
+  postgresql-password: "{{ .Values.postgresql.postgresqlPassword | b64enc }}"
+  {{- end }}

chart/values.yaml.template

@@ -95,6 +95,10 @@ elasticsearch:
 
 # https://github.com/bitnami/charts/tree/master/bitnami/postgresql#parameters
 postgresql:
+  # disable if you want to use an existing db; in which case the values below
+  # must match those of that external postgres instance
+  enabled: true
+  # postgresqlHostname: preexisting-postgresql
   postgresqlDatabase: mastodon_production
   # you must set a password; the password generated by the postgresql chart will
   # be rotated on each upgrade: