config: add example configuration file

config/config.yml.example

@@ -0,0 +1,49 @@
+# ns8-backup-monitor configuration
+
+# SMTP settings for notification emails
+smtp:
+  host: localhost
+  port: 25
+  use_tls: false
+  use_starttls: false
+  username: ""
+  password: ""
+
+# Notification recipients
+mail:
+  from: "ns8-backup-monitor@yourdomain.com"
+  to:
+    - "admin@yourdomain.com"
+  subject_prefix: "[NS8 Backup]"
+
+# Webhook receiver settings
+receiver:
+  host: "127.0.0.1"
+  port: 9099
+
+# Timing: how many seconds to wait after alert before checking
+# (allows all modules to finish writing their status)
+correlator:
+  wait_seconds: 30
+  # Time window (seconds) to consider a backup "recent" after alert
+  recent_window: 3600
+
+# Redis connection (NS8 cluster state)
+redis:
+  socket: "/var/lib/nethserver/cluster/state/redis.sock"
+  # Alternatively use host/port if not using unix socket
+  # host: "127.0.0.1"
+  # port: 6379
+
+# Repository check: commands to run to verify backup destination
+# These are run as root and should return exit code 0 on success
+repo_check:
+  # Maximum seconds to wait for repo check
+  timeout: 60
+  # Additional restic flags if needed
+  restic_flags: ""
+
+# Logging
+logging:
+  level: INFO
+  file: "/var/log/ns8-backup-monitor.log"