fix: attempt pgbackup

kubernetes/apps/database/cloudnative-pg/cluster/pgdump/helmrelease.yaml

@@ -44,35 +44,7 @@ spec:
             envFrom: &envFrom
               - secretRef:
                   name: cloudnative-pg-postgres16-pgdump-secret
-            command:
+            command: /scripts/list_dbs.sh
-              - "/bin/bash"
-              - "-c"
-              - |
-                #!/bin/bash
-
-                set -o nounset
-                set -o errexit
-
-                # File to store the list of databases
-                OUTPUT_FILE="/config/db_list"
-
-                # Export PG password to avoid password prompt
-                export PGPASSWORD=$POSTGRES_PASSWORD
-
-                # Generate a regex pattern for exclusion
-                EXCLUDE_PATTERN=$(echo $EXCLUDE_DBS | sed 's/ /\\|/g')
-
-                # List all databases, exclude the ones in EXCLUDE_DBS, and write to the file
-                psql -h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USER -lqt | \
-                cut -d \| -f 1 | \
-                grep -Ev "^\s*($EXCLUDE_PATTERN)\s*$" > "$OUTPUT_FILE"
-
-                # Unset PG password
-                unset PGPASSWORD
-
-                echo "Database list saved to $OUTPUT_FILE"
-
-                cat $OUTPUT_FILE
         containers:
           app:
             image:
@@ -104,3 +76,10 @@ spec:
         path: /var/mnt/vol1/backups/postgresql
         globalMounts:
           - path: /backups
+      scripts:
+        enabled: true
+        type: configMap
+        name: cloudnative-pg-postgres16-pgdump-scripts # overriden by kustomizeconfig
+        defaultMode: 0775
+        globalMounts:
+          - path: /scripts

kubernetes/apps/database/cloudnative-pg/cluster/pgdump/kustomization.yaml

@@ -6,3 +6,11 @@ namespace: default
 resources:
   - ./externalsecret.yaml
   - ./helmrelease.yaml
+configMapGenerator:
+  - name: cloudnative-pg-postgres16-pgdump-scripts
+    files:
+      - list_dbs.sh=./scripts/list_dbs.sh
+generatorOptions:
+  disableNameSuffixHash: true
+  annotations:
+    kustomize.toolkit.fluxcd.io/substitute: disabled

kubernetes/apps/database/cloudnative-pg/cluster/pgdump/scripts/list_dbs.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+
+set -o nounset
+set -o errexit
+
+# File to store the list of databases
+OUTPUT_FILE="/config/db_list"
+
+# Export PG password to avoid password prompt
+export PGPASSWORD="$POSTGRES_PASSWORD"
+
+# Convert EXCLUDE_DBS to an array
+IFS=' ' read -r -a EXCLUDE_ARRAY <<< "$EXCLUDE_DBS"
+
+# List all databases and filter out the excluded ones
+psql -h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USER -lqt | \
+cut -d \| -f 1 | \
+sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | \
+while read -r dbname; do
+    skip=false
+    for exclude in "${EXCLUDE_ARRAY[@]}"; do
+        if [[ "$dbname" == "$exclude" ]]; then
+            skip=true
+            break
+        fi
+    done
+    if [[ "$skip" == false ]]; then
+        echo "$dbname"
+    fi
+done > "$OUTPUT_FILE"
+
+# Unset PG password
+unset PGPASSWORD
+
+echo "Database list saved to $OUTPUT_FILE"
+
+cat $OUTPUT_FILE