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

# Configure Log Format

In the `sn-platform` 1.11 added a new feature called the `logConfig` which can be used to change the log level and log format of `zookeeper`, `bookkeeper`, `broker` and `proxy`. If `logConfig` field is configured, the component will use the mount path `/mnt/conf/log4j2.yaml` to mount the log configuration file, and can dynamically change the log level and log format of the component.

<Note title="Note">
  To use the `logConfig` feature, you need to make sure already installed the [pulsar-operator](https://github.com/streamnative/charts/tree/master/charts/pulsar-operator) after 0.17.
</Note>

The `logConfig` field has three subfields:

* `level`
* `format`
* `template`

And use the Broker component as the example.

### `level`

The `level` field can be used to change the log level of the component. The value can be one of `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR`, `FATAL`, `OFF`.

```
broker:
  logConfig:
    level: "DEBUG"
    format: "text"
    template: {}
```

### `format`

The `format` field can be used to change the log format of the component. The value can be one of `json`, `text`.

```
broker:
  logConfig:
    level: "INFO"
    format: "json"
    template: {}
```

### `template`

The `template` field can totally replace the log4j2 config of the component, which would be useful if you need some customization more than `level` and `format`. The value of template is a string, which is the content of the log4j2 config file in yaml format.

```
broker:
  logConfig:
    level: "INFO"
    format: "text"
    template:
      Configuration:
        status: INFO
        monitorInterval: 30
        name: pulsar
        packages: io.prometheus.client.log4j2

        Loggers:
          Root:
            {{ if .Level }}
            level: "{{ .Level }}"
            {{ else }}
            level: "INFO"
            {{ end }}
            additivity: true
            AppenderRef:
              - ref: "${sys:pulsar.log.appender}"
                {{ if .Level }}
                level: "{{ .Level }}"
                {{ else }}
                level: "INFO"
                {{ end }}
              - ref: Prometheus
                level: info
```