![]() ![]() The steps outlined here run ZooKeeper in standalone mode. You will see log messages coming to the console (default) and/or a log file depending on the logback configuration. ZooKeeper logs messages using logback - more detail available in the Logging section of the Programmer's Guide. Now that you created the configuration file, you can start ZooKeeper: bin/zkServer.sh start It is used to do heartbeats and the minimum session timeout will be twice the tickTime.ĭataDir : the location to store the in-memory database snapshots and, unless specified otherwise, the transaction log of updates to the database.ĬlientPort : the port to listen for client connections TickTime : the basic time unit in milliseconds used by ZooKeeper. Here are the meanings for each of the fields: Change the value of dataDir to specify an existing (empty to start with) directory. This file can be called anything, but for the sake of this discussion call it conf/zoo.cfg. Here is a sample, create it in conf/zoo.cfg: tickTime=2000 To start ZooKeeper you need a configuration file. Once you've downloaded a stable ZooKeeper release unpack it and cd to the root The server is contained in a single JAR file, so installation consists of creating a configuration. Setting up a ZooKeeper server in standalone mode is straightforward. To get a ZooKeeper distribution, download a recent stable release from one of the Apache Download Mirrors. See System Requirements in the Admin guide. However for the complete instructions for commercial deployments, please refer to the ZooKeeper Administrator's Guide. Finally, as a convenience, there are a few sections regarding more complicated installations, for example running replicated deployments, and optimizing the transaction log. It is aimed primarily at developers hoping to try it out, and contains simple installation instructions for a single ZooKeeper server, a few commands to verify that it is running, and a simple programming example. This document contains information to get you started quickly with ZooKeeper. Getting Started: Coordinating Distributed Applications with ZooKeeper Getting Started: Coordinating Distributed Applications with ZooKeeper.Audit Logging - a guide on how to configure audit logs in ZooKeeper Server and what contents are logged.ZooKeeper Monitor - a guide on how to monitor the ZooKeeper.ZooKeeper Tools - a guide on how to use a series of tools for ZooKeeper.ZooKeeper CLI - a guide on how to use the ZooKeeper command line interface.Dynamic Reconfiguration - a guide on how to use dynamic reconfiguration in ZooKeeper.Observers - non-voting ensemble members that easily improve ZooKeeper's scalability.Oracle Quorum - the introduction to Oracle Quorum increases the availability of a cluster of 2 ZooKeeper instances with a failure detector.Hierarchical Quorums - a guide on how to use hierarchical quorums.Snapshot and Restore Guide - a guide for system administrators on take snapshot and restore ZooKeeper.Quota Guide - a guide for system administrators on Quotas in ZooKeeper.Administrator's Guide - a guide for system administrators and anyone else who might deploy ZooKeeper.Administrators & Operators Documents for Administrators and Operations Engineers of ZooKeeper Deployments.ZooKeeper Recipes - higher level solutions to common problems in distributed applications.Barrier and Queue Tutorial - sample implementations of barriers and queues.ZooKeeper Java Example - a simple Zookeeper client application, written in Java.ZooKeeper Use Cases - a series of use cases using the ZooKeeper.Programmer's Guide - a client application developer's guide to ZooKeeper.API Docs - the technical reference to ZooKeeper Client APIs.Developers Documents for Developers using the ZooKeeper Client API.Release Notes - new developer and user facing features, improvements, and incompatibilities.Getting Started - a tutorial-style guide for developers to install, run, and program to ZooKeeper.Overview - a bird's eye view of ZooKeeper, including design concepts and architecture.ZooKeeper Overview Technical Overview Documents for Client Developers, Administrators, and Contributors.If you have more questions, please ask the mailing list or browse the archives. The following documents describe concepts and procedures to get you started using ZooKeeper. And you can build on it for your own, specific needs. You can use it off-the-shelf to implement consensus, group management, leader election, and presence protocols. It exposes common services - such as naming, configuration management, synchronization, and group services - in a simple interface so you don't have to write them from scratch. ZooKeeper is a high-performance coordination service for distributed applications. ZooKeeper: Because Coordinating Distributed Systems is a Zoo ![]()
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