feat(helm): roll deployments when database config changes (reanahub#818)

Automatically restart deployed pods when the database configuration changes by setting the checksums of the ConfigMaps and Secrets as annotations of the pod.
mdonadoni · Aug 23, 2024 · 84f5876 · 84f5876
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commit 84f5876
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Showing 7 changed files with 56 additions and 46 deletions.
diff --git a/helm/reana/templates/database-secrets.yaml b/helm/reana/templates/database-secrets.yaml
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "reana.prefix" . }}-db-secrets
+  namespace: {{ .Release.Namespace }}
+  annotations:
+    "helm.sh/resource-policy": keep
+type: Opaque
+data:
+  user: {{ .Values.secrets.database.user | default "reana" | b64enc }}
+  password: {{ .Values.secrets.database.password | default "reana" | b64enc }}
diff --git a/helm/reana/templates/pgbouncer-config.yaml b/helm/reana/templates/pgbouncer-config.yaml
@@ -0,0 +1,22 @@
+
+{{- if .Values.pgbouncer.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "reana.prefix" . }}-pgbouncer-config
+  namespace: {{ .Release.Namespace }}
+data:
+  PGBOUNCER_POOL_MODE: {{ .Values.pgbouncer.pool_mode | quote }}
+  PGBOUNCER_MAX_CLIENT_CONN: {{ .Values.pgbouncer.max_client_conn | quote }}
+  PGBOUNCER_MAX_DB_CONNECTIONS: {{ .Values.pgbouncer.max_db_connections | quote }}
+  PGBOUNCER_DEFAULT_POOL_SIZE: {{ .Values.pgbouncer.max_db_connections | quote }}
+  {{- if .Values.components.reana_db.enabled }}
+  PGBOUNCER_DATABASE: reana
+  POSTGRESQL_HOST: {{ include "reana.prefix" . }}-db
+  POSTGRESQL_PORT: "5432"
+  {{- else }}
+  PGBOUNCER_DATABASE: {{ .Values.db_env_config.REANA_DB_NAME | quote }}
+  POSTGRESQL_HOST:  {{ .Values.db_env_config.REANA_DB_HOST | quote }}
+  POSTGRESQL_PORT:  {{ .Values.db_env_config.REANA_DB_PORT | quote }}
+  {{- end }}
+{{- end }}
diff --git a/helm/reana/templates/pgbouncer-secrets.yaml b/helm/reana/templates/pgbouncer-secrets.yaml
@@ -0,0 +1,12 @@
+{{- if .Values.pgbouncer.enabled }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "reana.prefix" . }}-pgbouncer-secrets
+  namespace: {{ .Release.Namespace }}
+  annotations:
+    "helm.sh/resource-policy": keep
+type: Opaque
+data:
+  userlist: {{ printf "%s %s" (.Values.secrets.database.user | default "reana" | quote) (.Values.secrets.database.password | default "reana" | quote) | b64enc}}
+{{- end }}
diff --git a/helm/reana/templates/pgbouncer.yaml b/helm/reana/templates/pgbouncer.yaml
@@ -13,26 +13,6 @@ spec:
     targetPort: 6432
     protocol: TCP
 ---
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: {{ include "reana.prefix" . }}-pgbouncer-conf
-  namespace: {{ .Release.Namespace }}
-data:
-  PGBOUNCER_POOL_MODE: {{ .Values.pgbouncer.pool_mode | quote }}
-  PGBOUNCER_MAX_CLIENT_CONN: {{ .Values.pgbouncer.max_client_conn | quote }}
-  PGBOUNCER_MAX_DB_CONNECTIONS: {{ .Values.pgbouncer.max_db_connections | quote }}
-  PGBOUNCER_DEFAULT_POOL_SIZE: {{ .Values.pgbouncer.max_db_connections | quote }}
-  {{- if .Values.components.reana_db.enabled }}
-  PGBOUNCER_DATABASE: reana
-  POSTGRESQL_HOST: {{ include "reana.prefix" . }}-db
-  POSTGRESQL_PORT: "5432"
-  {{- else }}
-  PGBOUNCER_DATABASE: {{ .Values.db_env_config.REANA_DB_NAME | quote }}
-  POSTGRESQL_HOST:  {{ .Values.db_env_config.REANA_DB_HOST | quote }}
-  POSTGRESQL_PORT:  {{ .Values.db_env_config.REANA_DB_PORT | quote }}
-  {{- end }}
----
 apiVersion: apps/v1
 kind: Deployment
 metadata:
@@ -47,6 +27,10 @@ spec:
     metadata:
       labels:
         app: {{ include "reana.prefix" . }}-pgbouncer
+      annotations:
+        checksum/pgbouncer-config: {{ include (print $.Template.BasePath "/pgbouncer-config.yaml") . | sha256sum }}
+        checksum/pgbouncer-secrets: {{ include (print $.Template.BasePath "/pgbouncer-secrets.yaml") . | sha256sum }}
+        checksum/database-secrets: {{ include (print $.Template.BasePath "/database-secrets.yaml") . | sha256sum }}
     spec:
       containers:
       - name: pgbouncer
@@ -55,7 +39,7 @@ spec:
         - containerPort: 6432
         envFrom:
           - configMapRef:
-              name: {{ include "reana.prefix" . }}-pgbouncer-conf
+              name: {{ include "reana.prefix" . }}-pgbouncer-config
         env:
         - name: POSTGRESQL_USERNAME
           valueFrom:

diff --git a/helm/reana/templates/reana-server.yaml b/helm/reana/templates/reana-server.yaml
@@ -28,6 +28,9 @@ spec:
     metadata:
       labels:
         app: {{ include "reana.prefix" . }}-server
+      annotations:
+        checksum/database-config: {{ include (print $.Template.BasePath "/database-config.yaml") . | sha256sum }}
+        checksum/database-secrets: {{ include (print $.Template.BasePath "/database-secrets.yaml") . | sha256sum }}
     spec:
       serviceAccountName: {{ include "reana.prefixed_infrastructure_svaccount_name" . }}
       containers:

diff --git a/helm/reana/templates/reana-workflow-controller.yaml b/helm/reana/templates/reana-workflow-controller.yaml
@@ -45,6 +45,9 @@ spec:
     metadata:
       labels:
         app: {{ include "reana.prefix" . }}-workflow-controller
+      annotations:
+        checksum/database-config: {{ include (print $.Template.BasePath "/database-config.yaml") . | sha256sum }}
+        checksum/database-secrets: {{ include (print $.Template.BasePath "/database-secrets.yaml") . | sha256sum }}
     spec:
       serviceAccountName: {{ include "reana.prefixed_infrastructure_svaccount_name" . }}
       containers:

diff --git a/helm/reana/templates/secrets.yaml b/helm/reana/templates/secrets.yaml
@@ -1,31 +1,6 @@
 ---
 apiVersion: v1
 kind: Secret
-metadata:
-  name: {{ include "reana.prefix" . }}-db-secrets
-  namespace: {{ .Release.Namespace }}
-  annotations:
-    "helm.sh/resource-policy": keep
-type: Opaque
-data:
-  user: {{ .Values.secrets.database.user | default "reana" | b64enc }}
-  password: {{ .Values.secrets.database.password | default "reana" | b64enc }}
-{{- if .Values.pgbouncer.enabled }}
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: {{ include "reana.prefix" . }}-pgbouncer-secrets
-  namespace: {{ .Release.Namespace }}
-  annotations:
-    "helm.sh/resource-policy": keep
-type: Opaque
-data:
-  userlist: {{ printf "%s %s" (.Values.secrets.database.user | default "reana" | quote) (.Values.secrets.database.password | default "reana" | quote) | b64enc}}
-{{- end }}
----
-apiVersion: v1
-kind: Secret
 metadata:
   name: {{ include "reana.prefix" . }}-cern-sso-secrets
   namespace: {{ .Release.Namespace }}