# Update Log Level

ESS services support a subset of log levels supported by Quarkus:

* **`FATAL`**
* **`ERROR`**
* **`WARN`**
* **`INFO`** (Default level)
* **`DEBUG`**

By default, ESS’ log level is configured to **`INFO`** level:

* This outputs logs with severity level **`INFO`** and higher (i.e., outputs **`INFO`** , **`WARN`** , **`ERROR`** and **`FATAL`** levels).
* This excludes logs with security level below **`INFO`** (i.e., excludes **`DEBUG`** ).

As part of your infrastructure-as-code deployment, you may wish to control log levels of the deployments using a customization.

For example, when debugging an issue you may temporarily enable **`DEBUG`** level logs to get more granular information on system behavior.

To change a service’s log level, you can create an overlay to update the **`QUARKUS_LOG_LEVEL`** environment variable.

{% hint style="info" %}
ESS also supports changing the level of log messages using redaction. See [Logging Redaction](https://docs.inrupt.com/ess/2.5/administration/logging/logging-redaction) for details.
{% endhint %}

## Example Debug Logging Customization File

You can use the following procedure to enable **`DEBUG`** level logging for **`pod-provisioning`** :

1. Go to your ESS installation directory:

   ```sh
   cd ${HOME}/ess
   ```
2. Modify the **`kustomization.yaml`** (i.e., step 3 of the [Applying Your Customizations](https://docs.inrupt.com/ess/2.5/installation/..#applying-your-customizations) procedure).\
   Specifically, add the highlighted content to the **`kustomization.yaml`** file under the **`patches`** key:

{% hint style="info" %}
**Tip** If **`patches`** list does not exist in **`kustomization.yaml`** , add the key **`patches`** as well.
{% endhint %}

```yaml
# kustomization.yaml in your ESS installation directory
# ...  Preceding content omitted for brevity 
# ...
patches:
  - target:
      kind: Deployment
      name: ess-pod-provision
    patch: |-
      apiVersion: apps/v1
      kind: Deployment
      metadata:
        name: ess-pod-provision
      spec:
        template:
          spec:
            containers:
              - env:
                - name: QUARKUS_LOG_LEVEL
                  value: DEBUG
                name: ess-pod-provision
```

3. Continue with the rest of the [Applying Your Customizations](https://docs.inrupt.com/ess/2.5/installation/..#applying-your-customizations) procedure.

{% hint style="info" %}
**Tip**\
Remember to reset the log level when you’re finished debugging.
{% endhint %}