zookeeper单机模式安装
下载zookeeper
单节点安装
修改配置文件
#修改配置文件名
mv zoo_sample.cfg zoo.cfg
#创建数据文件夹
[zengjr@hadoop-zengjr zookeeper]$ mkdir data
[zengjr@hadoop-zengjr zookeeper]$ cd data/
[zengjr@hadoop-zengjr data]$ pwd
/opt/modules/zookeeper/data
#修改配置
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/opt/modules/zookeeper/data
# the port at which the clients will connect
配置文件说明：
tickTime：这个时间是作为 Zookeeper 服务器之间或客户端与服务器之间维持心跳的时间间隔，也就是每个 tickTime 时间就会发送一个心跳。
dataDir：顾名思义就是 Zookeeper 保存数据的目录，默认情况下，Zookeeper 将写数据的日志文件也保存在这个目录里。
clientPort：这个端口就是客户端连接 Zookeeper 服务器的端口，Zookeeper 会监听这个端口，接受客户端的访问请求。
启动zookeeper
#zkServer的用法
[zengjr@hadoop-zengjr bin]$ ./zkServer.sh
JMX enabled by default
Using config: /opt/modules/zookeeper/bin/../conf/zoo.cfg
Usage: ./zkServer.sh {start|start-foreground|stop|restart|status|upgrade|print-cmd}
[zengjr@hadoop-zengjr bin]$ ./zkServer.sh start
JMX enabled by default
Using config: /opt/modules/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[zengjr@hadoop-zengjr bin]$ jps
3318 Jps
3301 QuorumPeerMain
1991 NameNode
2449 NodeManager
2093 DataNode
验证zookeeper
[zengjr@hadoop-zengjr bin]$ ./zkServer.sh status
JMX enabled by default
Using config: /opt/modules/zookeeper/bin/../conf/zoo.cfg
Mode: standalone
客户端连接zookeeper
[zengjr@hadoop-zengjr bin]$ ./zkCli.sh -server localhost:2181
Connecting to localhost:2181
2014-12-31 12:30:53,094 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT
2014-12-31 12:30:53,098 [myid:] - INFO [main:Environment@100] - Client environment:host.name=hadoop-zengjr.xiaoqee.com
2014-12-31 12:30:53,099 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.7.0_67
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/opt/modules/jdk1.7.0_67/jre
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/opt/modules/zookeeper/bin/../build/classes:/opt/modules/zookeeper/bin/../build/lib/*.jar:/opt/modules/zookeeper/bin/../lib/slf4j-log4j12-1.6.1.jar:/opt/modules/zookeeper/bin/../lib/slf4j-api-1.6.1.jar:/opt/modules/zookeeper/bin/../lib/netty-3.7.0.Final.jar:/opt/modules/zookeeper/bin/../lib/log4j-1.2.16.jar:/opt/modules/zookeeper/bin/../lib/jline-0.9.94.jar:/opt/modules/zookeeper/bin/../zookeeper-3.4.6.jar:/opt/modules/zookeeper/bin/../src/java/lib/*.jar:/opt/modules/zookeeper/bin/../conf:
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux
2014-12-31 12:30:53,105 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64
2014-12-31 12:30:53,106 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-358.el6.x86_64
2014-12-31 12:30:53,106 [myid:] - INFO [main:Environment@100] - Client environment:user.name=zengjr
2014-12-31 12:30:53,106 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/home/zengjr
2014-12-31 12:30:53,106 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/opt/modules/zookeeper/bin
2014-12-31 12:30:53,109 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@5b4c1313
Welcome to ZooKeeper!
2014-12-31 12:30:53,141 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@975] - Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
2014-12-31 12:30:53,167 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@852] - Socket connection established to localhost/127.0.0.1:2181, initiating session
JLine support is enabled
2014-12-31 12:30:53,510 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1235] - Session establishment complete on server localhost/127.0.0.1:2181, sessionid = 0x14aa16151c90000, negotiated timeout = 30000
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
zkCli.sh 常用命令
ZooKeeper -server host:port cmd args
connect host:port
get path [watch]
ls path [watch]
set path data [version]
rmr path
delquota [-n|-b] path
quit
printwatches on|off
create [-s] [-e] path data acl
stat path [watch]
close
ls2 path [watch]
history
listquota path
setAcl path acl
getAcl path
sync path
redo cmdno
addauth scheme auth
delete path [version]
setquota -n|-b val path