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 readonly 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 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 readonly 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 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.