fix(monitoring): support existing monitor updates and vault nodes

- setup_uptime_kuma: Use api.edit_monitor to update existing monitors with new configuration instead of skipping them.
- setup_uptime_kuma: Add port and accepted_statuscodes to DNS monitors to prevent NodeJS null reading errors in Kuma.
- http.py: Parse VAULT_HOSTS environment variable for Vault cluster nodes instead of hardcoding 'vault'.

health-agent/scripts/setup_uptime_kuma.py

@@ -145,12 +145,22 @@ def setup_uptime_kuma(dry_run=False, only=None):
         logger.info(f"Processing push monitor: {m_name}")
         if not dry_run:
             if m_name in existing_monitors:
-                logger.info(f"Monitor {m_name} already exists.")
+                logger.info(f"Monitor {m_name} already exists. Updating...")
                 m_id = existing_monitors[m_name]['id']
                 tokens[m_name] = existing_monitors[m_name]['pushToken']
 
-                if parent_group_id and existing_monitors[m_name].get('parent') != parent_group_id:
+                kwargs = {
-                    api.edit_monitor(m_id, parent=parent_group_id)
+                    "interval": m_interval
+                }
+                if parent_group_id:
+                    kwargs["parent"] = parent_group_id
+                if notif_ids:
+                    kwargs["notificationIDList"] = notif_ids
+                    
+                try:
+                    api.edit_monitor(m_id, **kwargs)
+                except Exception as e:
+                    logger.warning(f"Failed to edit push monitor {m_name}: {e}")
             else:
                 logger.info(f"Creating push monitor: {m_name}")
                 kwargs = {
@@ -194,7 +204,23 @@ def setup_uptime_kuma(dry_run=False, only=None):
         logger.info(f"Processing HTTP monitor: {m_name} -> {url}")
         if not dry_run:
             if m_name in existing_monitors:
-                logger.info(f"Monitor {m_name} already exists.")
+                logger.info(f"Monitor {m_name} already exists. Updating...")
+                m_id = existing_monitors[m_name]['id']
+                kwargs = {
+                    "type": MonitorType.HTTP,
+                    "name": m_name,
+                    "url": url,
+                    "interval": interval,
+                    "accepted_statuscodes": accepted_statuscodes,
+                }
+                if parent_group_id is not None:
+                    kwargs["parent"] = parent_group_id
+                if notif_ids:
+                    kwargs["notificationIDList"] = notif_ids
+                try:
+                    api.edit_monitor(m_id, **kwargs)
+                except Exception as e:
+                    logger.warning(f"Failed to edit HTTP monitor {m_name}: {e}")
             else:
                 try:
                     kwargs = {
@@ -227,13 +253,33 @@ def setup_uptime_kuma(dry_run=False, only=None):
         logger.info(f"Processing DNS monitor: {m_name} -> {hostname}")
         if not dry_run:
             if m_name in existing_monitors:
-                logger.info(f"Monitor {m_name} already exists.")
+                logger.info(f"Monitor {m_name} already exists. Updating...")
+                m_id = existing_monitors[m_name]['id']
+                kwargs = {
+                    "type": MonitorType.DNS,
+                    "name": m_name,
+                    "hostname": hostname,
+                    "port": 53,
+                    "accepted_statuscodes": ["200-299"],
+                    "dns_resolve_type": dns_resolve_type,
+                    "interval": interval,
+                }
+                if parent_group_id is not None:
+                    kwargs["parent"] = parent_group_id
+                if notif_ids:
+                    kwargs["notificationIDList"] = notif_ids
+                try:
+                    api.edit_monitor(m_id, **kwargs)
+                except Exception as e:
+                    logger.warning(f"Failed to edit DNS monitor {m_name}: {e}")
             else:
                 try:
                     kwargs = {
                         "type": MonitorType.DNS,
                         "name": m_name,
                         "hostname": hostname,
+                        "port": 53,
+                        "accepted_statuscodes": ["200-299"],
                         "dns_resolve_type": dns_resolve_type,
                         "interval": interval,
                     }
@@ -263,7 +309,23 @@ def setup_uptime_kuma(dry_run=False, only=None):
         logger.info(f"Processing Ping monitor: {m_name} -> {ip}")
         if not dry_run:
             if m_name in existing_monitors:
-                logger.info(f"Monitor {m_name} already exists.")
+                logger.info(f"Monitor {m_name} already exists. Updating...")
+                m_id = existing_monitors[m_name]['id']
+                kwargs = {
+                    "type": MonitorType.PING,
+                    "name": m_name,
+                    "hostname": ip,
+                    "interval": ping_interval,
+                    "maxretries": ping_retries,
+                }
+                if parent_group_id is not None:
+                    kwargs["parent"] = parent_group_id
+                if notif_ids:
+                    kwargs["notificationIDList"] = notif_ids
+                try:
+                    api.edit_monitor(m_id, **kwargs)
+                except Exception as e:
+                    logger.warning(f"Failed to edit Ping monitor {m_name}: {e}")
             else:
                 try:
                     kwargs = {
@@ -293,7 +355,23 @@ def setup_uptime_kuma(dry_run=False, only=None):
         logger.info(f"Processing Ping monitor: {m_name} -> {ip}")
         if not dry_run:
             if m_name in existing_monitors:
-                logger.info(f"Monitor {m_name} already exists.")
+                logger.info(f"Monitor {m_name} already exists. Updating...")
+                m_id = existing_monitors[m_name]['id']
+                kwargs = {
+                    "type": MonitorType.PING,
+                    "name": m_name,
+                    "hostname": ip,
+                    "interval": ping_interval,
+                    "maxretries": ping_retries,
+                }
+                if parent_group_id is not None:
+                    kwargs["parent"] = parent_group_id
+                if notif_ids:
+                    kwargs["notificationIDList"] = notif_ids
+                try:
+                    api.edit_monitor(m_id, **kwargs)
+                except Exception as e:
+                    logger.warning(f"Failed to edit Ping monitor {m_name}: {e}")
             else:
                 try:
                     kwargs = {