# Configuration identifier

Starting with AxoSyslog version 4.2, you can specify a configuration identifier in the `syslog-ng.conf` file, for example:
```
 
    @config-id: cfg-20230404-13-g02b0850fc
    
```

This can be useful in managed environments, where AxoSyslog instances and their configuration are automatically deployed or generated.

To show the configuration ID, run `syslog-ng-ctl config --id`

This returns the ID of the currently active configuration, and the SHA256 hash of the configuration (the hash of the output of the `syslog-ng-ctl config --preprocessed` command). The output is similar to:
```
 
    cfg-20230404-13-g02b0850fc (08ddecfa52a3443b29d5d5aa3e5114e48dd465e195598062da9f5fc5a45d8a83)
    
```

Last modified August 18, 2023: [Adds Axoflow copyright notice to new files (3dfacaf)](<https://github.com/axoflow/axosyslog-core-docs/commit/3dfacaf1cc0a15aeed2b007e62df0dbcd7730b1a>)