Zookeeper environment setup

download

download the latest version from the mirror site
http:/ /mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/
Download all historical versions from the documentation site
https://archive.apache.org/dist/zookeeper/

apache-zookeeper-3.5.5-bin.tar.gz 2019-05-20 18:40 10M
zookeeper-3.4.6.tar.gz 2016-01-10 17:11 17M

Reference document

https://zookeeper.apache.org/doc/r3.5.5/zookeeperStarted.html

Single machine environment

Create configuration file conf/zoo.cfg

tickTime=2000
dataDir=D:\\chengxu \\apache-zookeeper-3.4.6\\data
clientPort=2181

windows start

zkServer.cmd

D:\chengxu\apache-zookeeper-3.4.6\bin>zkServer.cmd

Linux start

zkServer.sh start

< h1 id="bugs">Bugs

An error was reported when starting zookeeper:
Caused by: java.net.BindException: Address already in use: bind
Reason:
 zookeeper In the latest version, there is an embedded management console that is started via jetty, which will occupy port 8080. 
Scheme:
 Modify the port number:
 1. Add -Dzookeeper.admin.serverPort=unoccupied port number in the startup script zkServer.cmd
 2. In zoo.cfg Add admin.serverPort=unoccupied port number
 Disable jetty AdminServer:
 3. Add "-Dzookeeper.admin.enableServer=false" to the startup script zkServer.cmd
Effect: 
2019-09-22 09:42:38,064 [myid:]-INFO [main:[email protected]]-Started AdminServer on address 0.0.0.0, port 7000 and command URL /commands

dataDir does not work after configuration
Reason:
Left slash is not escaped
Error:
D:\chengxu\apache-zookeeper-3.4.6\data
Correct:
D:\\chengxu\\apache-zookeeper-3.4.6\\data
D:/chengxu/apache-zookeeper-3.4.6/data