> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Additional Config

If additional edits to the database's configuration file are desired, e.g.,
*UDFs* (*procs*), auditing, etc., the database will need to be stopped and the
file will need to be updated. System configuration is done primarily through the
configuration file <Badge color="gray">/opt/gpudb/core/etc/gpudb.conf</Badge>, and while all nodes
in a cluster have this file, only the copy on the *head node* needs to be
modified. The configuration file can be edited via *GAdmin* or via a text editor
on the command line.

<Note>
  Only edit the <Badge color="gray">/opt/gpudb/core/etc/gpudb.conf</Badge> on the
  *head node*.  Editing the file on *worker nodes* is not supported and may
  lead to unexpected results.
</Note>

Some common configuration options to consider updating:

* Enabling [auditing](/content/security/auditing)

* Changing the persist directory

  <Note>
    The directory should meet the following criteria:

    * Available disk space that is at least 4x memory
    * Writable by the `gpudb` user
    * Consist of raided SSDs
    * Not be part of a network share or NFS mount
  </Note>

* Enabling [UDFs](/content/udf) (*procs*)

* Adjusting [storage tiers and resource groups](/content/rm)

To edit the configuration file via *GAdmin*:

1. Log into *GAdmin*

   1. Enter `admin` for the **Username**
   2. Enter the **Admin Password** provided to *KAgent* for the
      **Password** (refer to [KAgent UI](/content/install/kagent_install#using-kagent-ui) for more
      information)
   3. Click **Log In**

2. [Stop the system](/content/admin/services#stop-db).

3. Navigate to **Cluster --> Config**

4. Edit the file in the text window.

5. Click **Update**, then click **Start Service**.

To edit the configuration file via command line:

1. [Stop the system](/content/admin/services#stop-db).
2. Open <Badge color="gray">/opt/gpudb/core/etc/gpudb.conf</Badge> in the desired text editor.
3. Edit and save the file.
4. [Start the system](/content/admin/services#start-db).