---
layout: default
title: zk
parent: Stardog Admin CLI Reference
has_children: true
has_toc: false
description: This page contains the commands available in the stardog-admin zk command group.
---

# `zk`

Stardog Cluster depends on Apache ZooKeeper. High Availability requires at least three Stardog and three ZooKeeper nodes in the Cluster. A cluster is composed of a set of Stardog servers and a ZooKeeper ensemble running together. Read more about using a [Stardog Cluster](../../high-availability-cluster).


Select any of the commands to view their manual page.

| Command | Description |
|---------|-------------|
| [`zk clear`](./zk-clear) | Clears the data stored in ZooKeeper by the Stardog cluster. |
| [`zk info`](./zk-info) | Prints the data Stardog stores in a ZooKeeper cluster. |

