Postgres backup cronjob.

services/postgres-backup.hcl

@@ -0,0 +1,37 @@
+job "postgres-backup" {
+  datacenters = ["alo"]
+  type = "batch"
+
+  periodic {
+    cron = "22 22 * * * *"
+    prohibit_overlap = true
+  }
+
+  group "db" {
+    task "backup" {
+      driver = "raw_exec"
+
+      config {
+        command = "/bin/sh"
+        args = [ "local/script.sh" ]
+      }
+
+      template {
+        destination = "local/script.sh"
+        data = <<EOH
+          set -e
+          /run/current-system/sw/bin/nomad alloc exec -job -task=postgres postgres \
+            pg_dumpall -U postgres > /data/compute/appdata/db-backups/postgresql/backup.sql
+        EOH
+      }
+
+      template {
+        destination = "secrets/file.env"
+        env = true
+        data = <<EOH
+          {{- with nomadVar "secrets/postgresql" -}}PGPASSWORD="{{ .postgres_password }}"{{- end -}}
+        EOH
+      }
+    }
+  }
+}