Use unique name for backup

test/nextcloud/1.0.0/templates/_postgres.tpl

@@ -13,4 +13,12 @@ app.kubernetes.io/name: {{ include "nextcloud.name" . }}-postgres
 app.kubernetes.io/instance: {{ .Release.Name }}-postgres
 {{- end }}
 
+{{/*
+Retrieve postgres backup name
+This will return a unique name based on revision and chart numbers specified.
+*/}}
+{{- define "postgres.backupName" -}}
+{{- $upgradeDict := .Values.ixChartContext.upgradeMetadata -}}
+{{- printf "postgres-backup-from-%s-to-%s-revision-%d" $upgradeDict.oldChartVersion $upgradeDict.newChartVersion (int64 $upgradeDict.preUpgradeRevision) -}}
+{{- end }}
 

test/nextcloud/1.0.0/templates/backup-postgres-config.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: "postgres-backup-hook-config-map"
+  annotations:
+    rollme: {{ randAlphaNum 5 | quote }}
+data:
+  entrypoint.sh: |-
+    #!/bin/sh
+    cmd="/docker-entrypoint.sh postgres"
+    eval "${cmd}" & disown;
+    until pg_isready; do
+      sleep 5;
+    done;
+    pg_dump -U $POSTGRES_USER -d {{ template "postgres.DatabaseName" . }} > /postgres_backups/$BACKUP_NAME;

test/nextcloud/1.0.0/templates/backup-postgres-hook.yaml

@@ -1,19 +1,4 @@
-apiVersion: v1
+{{- if .Values.ixChartContext.isUpgrade -}}
-kind: ConfigMap
-metadata:
-  name: "postgres-backup-hook-config-map"
-data:
-  entrypoint.sh: |-
-    #!/bin/sh
-    cmd="/docker-entrypoint.sh postgres"
-    eval "${cmd}" & disown;
-    until pg_isready; do
-      sleep 5;
-    done;
-    pg_dump -U $POSTGRES_USER -d {{ template "postgres.DatabaseName"}} > /postgres_backups/update_dump;
-
----
-
 apiVersion: batch/v1
 kind: Job
 metadata:
@@ -22,6 +7,7 @@ metadata:
     "helm.sh/hook": pre-upgrade
     "helm.sh/hook-weight": "1"
     "helm.sh/hook-delete-policy": hook-succeeded
+    rollme: {{ randAlphaNum 5 | quote }}
 spec:
   template:
     metadata:
@@ -44,6 +30,8 @@ spec:
             secretKeyRef:
               name: db-details
               key: db-password
+        - name: BACKUP_NAME
+          value: {{ template "postgres.backupName" . }}
         volumeMounts:
           - name: postgres-data
             mountPath: /var/lib/postgresql/data
@@ -66,3 +54,4 @@ spec:
         configMap:
           defaultMode: 0700
           name: "postgres-backup-hook-config-map"
+{{- end -}}

test/nextcloud/1.0.0/templates/deployment.yaml

@@ -49,7 +49,7 @@ spec:
         - name: POSTGRES_HOST
           value: {{ template "nextcloud.fullname" . }}-postgres:5432
         - name: POSTGRES_DB
-          value: {{ template "postgres.DatabaseName" }}
+          value: {{ template "postgres.DatabaseName" . }}
         - name: POSTGRES_USER
           valueFrom:
             secretKeyRef:

test/nextcloud/1.0.0/templates/nuke-deployments-hook.yaml

@@ -1,3 +1,4 @@
+{{- if .Values.ixChartContext.isUpgrade -}}
 apiVersion: batch/v1
 kind: Job
 metadata:
@@ -6,6 +7,7 @@ metadata:
     "helm.sh/hook": pre-upgrade
     "helm.sh/hook-weight": "-1"
     "helm.sh/hook-delete-policy": hook-succeeded
+    rollme: {{ randAlphaNum 5 | quote }}
 spec:
   template:
     metadata:
@@ -17,3 +19,4 @@ spec:
       - name: kubectl
         image: "bitnami/kubectl:1.19"
         command: ["kubectl", "delete" , "deployment", "{{ template "nextcloud.fullname" . }}", "{{ template "nextcloud.fullname" . }}-postgres"]
+{{- end -}}