Managing the configuration

Manage DataStax Distribution of Apache Cassandra™ (DDAC) configuration using a mounted volume or environment variables.

Manage the DataStax Distribution of Apache Cassandra™ (DDAC) configuration using one of the following options:

  • Environment variables to change the configuration at runtime.
  • Docker file or directory volume mounts.
  • Docker overlay file system.
Note: DSE and DDAC use the default values defined for the environment variables unless explicitly set at runtime. Custom configuration files override the default or explicitly set environment variables.

DataStax uses a common base image for all products. To customize the operating system or install additional packages, modify the base/Dockerfile. The DataStax base images use OpenJDK due to the end of public updates for Oracle JDK. All DataStax repositories on [Docker Hub](https://hub.docker.com/u/datastax/) include OpenJDK.