Charmed Kafka K8s Documentation - Reference File System Paths

File system path

In the following table, we summarize some of the most relevant file paths used in the Kafka and ZooKeeper charms.

Kafka

Path Description Permission
/opt/kafka Binary files for the Charmed Kafka distribution. Note that this is a read-only Squashfs file system. (owned by kafka)
/opt/kafka/bin/*.sh General bash scripts to provide helpers and utilities for managing and interacting with Kafka. (owned by kafka)
/etc/kafka/ Configuration files used by Kafka daemon process. These files are generally written and managed by the charm. (owned by kafka, managed by root)
/var/log/kafka/ Application Logging files generated by the Kafka daemon process. These files are written by the workload, but they may be read by other components to provide monitoring (e.g. Grafana and/or charm). (owned and managed by kafka)
/var/lib/kafka/ Raw data is stored persistently by Kafka during its operations. The files are written and managed by Kafka only. (owned and managed by kafka)

ZooKeeper

Path Description Permission
/opt/zookeeper Binary files for the Charmed ZooKeeper distribution. Note that this is a read-only Squashfs file system. (owned by zookeeper)
/opt/zookeeper/bin/*.sh General bash scripts to provide helpers and utilities for managing and interacting with ZooKeeper. (owned by zookeeper)
/etc/zookeeper/ Configuration files used by ZooKeeper daemon process. These files are generally written and managed by the charm. (owned by zookeeper, managed by root)
/var/log/zookeeper/ Application Logging files generated by the ZooKeeper daemon process. These files are written by the workload, but they may be read by other components to provide monitoring (e.g. Grafana and/or charm). (owned and managed by zookeeper)
/var/lib/zookeeper/ Raw data is stored persistently by ZooKeeper during its operations. The files are written and managed by ZooKeeper only. (owned and managed by zookeeper)

External storage is used for storing persistent raw data, and it is
mounted at /var/lib/zookeeper.