You should:

1. Enable RocksDB State Backend: Set state.backend: rocksdb in the flink-conf.yaml file. Add state.checkpoints.dir: s3:/// for S3 checkpoint storage.

2. Enable S3 Plugin: Include the S3 plugin in your Flink image or deployment. Add the flink-s3-fs-hadoop or flink-s3-fs-presto jar to the plugins directory.

3. Provide S3 Credentials: Configure access keys using environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY) or add them to flink-conf.yaml.

4. Deploy on Kubernetes: Use a custom Flink Docker image with the S3 plugin enabled, or mount the plugin directory into your Kubernetes pods.