.\" Licensed to the Apache Software Foundation (ASF) under one or more .\" contributor license agreements. See the NOTICE file distributed with .\" this work for additional information regarding copyright ownership. .\" The ASF licenses this file to You under the Apache License, Version 2.0 .\" (the "License"); you may not use this file except in compliance with .\" the License. You may obtain a copy of the License at .\" .\" http://www.apache.org/licenses/LICENSE-2.0 .\" .\" Unless required by applicable law or agreed to in writing, software .\" distributed under the License is distributed on an "AS IS" BASIS, .\" WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. .\" See the License for the specific language governing permissions and .\" limitations under the License. .\" .\" Process this file with .\" groff -man -Tascii zookeeper.1 .\" .TH zookeeper 1 "November 2010 " Linux "User Manuals" .SH NAME \fBzookeeper\fR \- a high-performance coordination service for distributed applications .SH SYNOPSIS .B zookeeper-client [-server host:port(,host:port)*] COMMAND [OPTIONS] .RS 0 .B zookeeper-server .RS 0 .B zookeeper-server-initialize [--configfile=] [--myid=###] [--force] .SH DESCRIPTION Apache ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services. All of these kinds of services are used in some form or another by distributed applications. Each time they are implemented there is a lot of work that goes into fixing the bugs and race conditions that are inevitable. Because of the difficulty of implementing these kinds of services, applications initially usually skimp on them, which make them brittle in the presence of change and difficult to manage. Even when done correctly, different implementations of these services lead to management complexity when the applications are deployed. For more information about ZooKeeper, see .RS 0 http://zookeeper.apache.org/. \fBzookeeper-server\fR starts/stops/etc... the ZooKeeper server. To find the list of available commands and options for \fBzookeeper-server\fR type: \fBzookeeper-server help\fR \fBzookeeper-server-initialize\fR initializes the ZooKeeper data directory. This must be run after configuring the server, prior to starting the service (the server will not start on an uninitialized data directory). On a production system it is important to run zookeeper-server-initialize under the same user id used for running zookeeper-server (sudo -u zookeeper). To find the list of available commands and options for \fBzookeeper-server-initialize\fR type: \fBzookeeper-server-initialize -h\fR \fBzookeeper-client\fR starts the ZooKeeper client shell. To find the list of available commands and options for \fBzookeeper-client\fR type: \fBzookeeper-client help\fR .SH ENVIRONMENT .IP ZOOKEEPER_HOME Alternate home directory. Default is /usr/lib/zookeeper. .IP ZOOKEEPER_CONF Alternate conf dir. Default is /etc/zookeeper/conf. .IP ZOOPIDFILE Alternate server PID file. Default is /var/run/zookeeper/zookeeper-server.pid. .SH COPYRIGHT Copyright (C) 2010-2012 The Apache Software Foundation. All rights reserved.