Using the DSE configuration volume

Docker images provided by DataStax include a startup script that swaps DataStax Enterprise (DSE) configuration files found in the /config volume directory with the configuration file in the default location on the container.

Procedure

Create a directory on your local host to store the configuration files.
Add the configuration files to replace in the container. The file name must match a corresponding configuration file in the image and include all required values. For example cassandra.yaml, dse.yaml, opscenterd.conf.

See the GitHub pages for a full list of configuration files.
- DSE
- OpsCenter
- Studio
Mount the local directory to the exposed /config directory during startup.

For example:
```
docker run -v /dse/conf:/config
```
Start the container.

For example, to start a transactional node:
```
docker run -e DS_LICENSE=accept \
--name my-dse \
-v /dse/config:/config datastax/dse-server \
-d datastax/dse-server
```
Setting the DS_LICENSE environment variable signals your acceptance of the DataStax terms of service and is required for the software to start.
After you make changes or add config files to the /config volume, restart the container to propagate the changes to the database.
```
docker restart container_name
```
Restarting the container restarts DSE.