# dnl\_watchdog

dnl\_watchdog is a module responsible for monitoring the hardware resources for DNL Class 4 Fusion.  It also provides interface for the UI to start and stop processes. 

To configure the dnl\_watchdog instance, you need to go to this file below:

```
cd /opt/denovo_v6/dnl_watchdog/conf
vi dnl_watchdog.conf
```

You must specify the correct IP for the database.  The dnl\_watchdog will publish status and events to DB so that UI can display them. 

```
pgsql_hostaddr  127.0.0.1  ← Ip address of the database server
pgsql_user  	postgres   ← database user

```

The dnl\_watchdog also works as a live daemon.  It can take incoming requests from Ui to start or stop any DNL Class4 Fusion processes. 

```
# Account password
# Default: none
#pgsql_pass 	password   ← If database is set to password only access then password here, and remove # from the front.

# Server binding address
# Default: 127.0.0.1
server_ip   	127.0.0.1 ← Ip address which is accessible to the api/ui server.

# Default: none - allow all connections
server_ip_whitelist 	127.0.0.1  ← Add server ip of the api /ui server to allow connections.

```


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