Madhan Neethiraj created RANGER-5492:
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Summary: Docker setup update to keep the container immutable
Key: RANGER-5492
URL: https://issues.apache.org/jira/browse/RANGER-5492
Project: Ranger
Issue Type: Improvement
Components: docker
Reporter: Madhan Neethiraj
Currently, docker files under `dev-support/ranger-docker` run `setup.sh` on the
first time a container starts up. `setup.sh` creates application configuration
files (like ranger-admin-site.xml, ranger-usersync-site.xml) in the container
based on values in `install.properties`, which is mounted into the container.
For some applications, the script also runs database initialization and
upgrade. This is not K8S compliant, as these steps will be executed in every
new container and the container state is mutated.
To be compliant with K8S guidelines that a container be immutable, Ranegr
docker images should be updated to replace use of `setup.sh` inside the
container with creating configuration files outside the container, and mount
the configuration files in the container. Also, consider handling database
initialization and upgrade using Kubernates Jobs.
CC: [~abhi]
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