zookeeper单机模式搭建(整理)

作者: 普度众生的面瘫青年 | 来源:发表于2018-04-16 21:10 被阅读139次

下载安装文件zookeeper-3.4.11.tar.gz

镜像地址1: http://apache.fayea.com/zookeeper/
镜像地址2: http://mirrors.hust.edu.cn/apache/zookeeper/

可使用wget直接在linux下载。（如果提示找不到wget命令，执行yum install wget下载wget包，其他环境可以使用其它命令，如ubantu的apt-get）

yum install wget
wget http://apache.fayea.com/zookeeper/zookeeper-3.4.11/zookeeper-3.4.11.tar.gz

新建/usr/loca/zookeeper文件夹

[root@localhost ~]# mkdir -pv /usr/local/zookeeper

拷贝下载的zookeeper压缩包到指定文件夹，并解压，同时创建zk的数据文件目录和日志目录

[root@localhost ~]# mkdir /var/zookeeper/data
[root@localhost ~]# mkdir /var/zookeeper/log
[root@localhost ~]# cp ./zookeeper-3.4.11.tar.gz  /usr/local/zookeeper
[root@localhost ~]# cd /usr/local/zookeeper
[root@localhost zookeeper]# tar -xzvf ./zookeeper-3.4.11.tar.gz

zookeeper运行在jvm上，需要提前安装java环境，链接：
https://www.jianshu.com/p/6003393e1c78
配置环境变量

[root@localhost ~]#vi /etc/profile 
在文件末尾添加以下内容
export ZOOKEEPER_INSTALL=/usr/local/zookeeper/zookeeper-3.4.11/
export PATH=$PATH:$ZOOKEEPER_INSTALL/bin

使用source命令使环境变量生效

source /etc/profile

配置文件修改

[root@localhost zookeeper-3.4.11]# cd /usr/local/zookeeper/zookeeper-3.4.11/conf/ -- 进入文件所在路径
[root@localhost conf]# cp zoo_sample.cfg zoo.cfg -- 将zoo.sample.cfg拷贝出一份zoo.cfg出来

文件内容如下:
配置文件简单解析
1、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。
2、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。
3、dataLogDir：顾名思义就是 Zookeeper 保存日志文件的目录
4、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。

[root@localhost conf]# vi zoo.cfg 
-- 按i进入编辑模式. 修改完成之后, esc退出编辑模式, 大写字母Z双击即可保存.

# The number of milliseconds of each tick
# zookeeper 定义的基准时间间隔，单位：毫秒
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.不让用/tmp，记得更换地址后去手动mkdir创建
dataDir=/usr/local/zookeeper/data -- 数据文件路径
dataLogDir=/usr/local/zookeeper/log -- 日志路径
# the port at which the clients will connect
# 客户端访问 zookeeper 的端口号，如果是多机器的话,在clientPort处添加服务器的ip
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
# maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
# log文件保存20个，snap快照文件保存20个，若zookeeper启动时发现超出时，就会执行删除文件的操作
autopurge.snapRetainCount=20
# Purge task interval in hours
# Set to "0" to disable auto purge feature
# 间隔5小时清理一次
autopurge.purgeInterval=5

修改完之后通过 > # cat zoo.cfg 查看.

开启服务,关闭服务, 查看

[root@localhost bin]# cd /usr/local/zookeeper/zookeeper.3.4.11/bin/

[root@localhost bin]# ./zkServer.sh stop -- 停止服务

JMX enabled by default

Using config: /usr/local/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg

Stopping zookeeper ... STOPPED

[root@localhost bin]# ./zkServer.sh start -- 开启服务

JMX enabled by default

Using config: /usr/local/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg

Starting zookeeper ... STARTED

[root@localhost bin]# ./zkServer.sh status -- 查看状态

JMX enabled by default

Using config: /usr/local/zookeeper/zookeeper-3.4.11/bin/../conf/zoo.cfg

Mode: standalone

[root@localhost bin]# ./zkCli.sh -- 客户端启动, 可以查看启动状态和日志

Connecting to localhost:2181

2017-03-08 06:15:26,918 [myid:] - INFO [main:Environment@100] - Client environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT

2017-03-08 06:15:26,923 [myid:] - INFO [main:Environment@100] - Client environment:host.name=localhost

2017-03-08 06:15:26,923 [myid:] - INFO [main:Environment@100] - Client environment:java.version=1.8.0_121

2017-03-08 06:15:26,925 [myid:] - INFO [main:Environment@100] - Client environment:java.vendor=Oracle Corporation

2017-03-08 06:15:26,926 [myid:] - INFO [main:Environment@100] - Client environment:java.home=/usr/local/java/jdk1.8.0_121/jre

2017-03-08 06:15:26,926 [myid:] - INFO [main:Environment@100] - Client environment:java.class.path=/usr/local/zookeeper/zookeeper-3.4.6/bin/../build/classes:/usr/local/zookeeper/zookeeper-3.4.6/bin/../build/lib/*.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../lib/slf4j-log4j12-1.6.1.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../lib/slf4j-api-1.6.1.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../lib/netty-3.7.0.Final.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../lib/log4j-1.2.16.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../lib/jline-0.9.94.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../zookeeper-3.4.6.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../src/java/lib/*.jar:/usr/local/zookeeper/zookeeper-3.4.6/bin/../conf:.:/usr/local/java/jdk1.8.0_121/lib/dt.jar:/usr/local/java/jdk1.8.0_121/lib/tools.jar:/usr/local/java/jdk1.8.0_121/jre/lib:.:/usr/local/java/jdk1.8.0_121/lib/dt.jar:/usr/local/java/jdk1.8.0_121/lib/tools.jar:/usr/local/java/jdk1.8.0_121/jre/lib:.:/usr/local/java/jdk1.8.0_121/lib/dt.jar:/usr/local/java/jdk1.8.0_121/lib/tools.jar:/usr/local/java/jdk1.8.0_121/jre/lib:

2017-03-08 06:15:26,926 [myid:] - INFO [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

2017-03-08 06:15:26,926 [myid:] - INFO [main:Environment@100] - Client environment:java.io.tmpdir=/tmp

2017-03-08 06:15:26,926 [myid:] - INFO [main:Environment@100] - Client environment:java.compiler=<NA>

2017-03-08 06:15:26,930 [myid:] - INFO [main:Environment@100] - Client environment:os.name=Linux

2017-03-08 06:15:26,930 [myid:] - INFO [main:Environment@100] - Client environment:os.arch=amd64

2017-03-08 06:15:26,930 [myid:] - INFO [main:Environment@100] - Client environment:os.version=2.6.32-431.el6.x86_64

2017-03-08 06:15:26,931 [myid:] - INFO [main:Environment@100] - Client environment:user.name=root

2017-03-08 06:15:26,931 [myid:] - INFO [main:Environment@100] - Client environment:user.home=/root

2017-03-08 06:15:26,931 [myid:] - INFO [main:Environment@100] - Client environment:user.dir=/usr/local/zookeeper/zookeeper-3.4.6/bin

2017-03-08 06:15:26,940 [myid:] - INFO [main:ZooKeeper@438] - Initiating client connection, connectString=localhost:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@277050dc

Welcome to ZooKeeper!

2017-03-08 06:15:27,039 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@975] - Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181\. Will not attempt to authenticate using SASL (unknown error)

JLine support is enabled

2017-03-08 06:15:27,290 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@852] - Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session

[zk: localhost:2181(CONNECTING) 0] 2017-03-08 06:15:27,445 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1235] - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x15aae45f1330000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null

[root@localhost bin]# ps -ef | grep zookeeper -- 查看zookeeper的服务进程

相关命令:{start|start-foreground|stop|restart|status|upgrade|print-cmd}

客户端连不上时，可以在客户端/etc/hosts配置ip和主机名的映射
192.168.0.200 master

zkClient简单操作
9个基本操作指令:

简单用例:

# 连接 ZooKeeper 服务器
bin/zkCli.sh -server localhost:2181
# 查看根下有哪些节点
[zk: localhost:2181(CONNECTED) 1] ls /
[controller_epoch, controller, brokers, zookeeper, admin, isr_change_notification, consumers, config]
# 查看 brokers 下有哪些子节点
[zk: localhost:2181(CONNECTED) 4] ls /brokers
[ids, topics, seqid]
# 在根下创建一个 "tuchao" 节点，并设置数据为 "hello zookeeper"
[zk: localhost:2181(CONNECTED) 5] create /tuchao "hello zookeeper"
# 查看是否创建成功
[zk: localhost:2181(CONNECTED) 6] ls /
[controller_epoch, controller, brokers, zookeeper, tuchao, admin, isr_change_notification, consumers, config]
# 查看 /tuchao 中的数据
[zk: localhost:2181(CONNECTED) 7] get /tuchao
hello zookeeper
cZxid = 0x20049ab24
ctime = Sun Oct 09 15:45:02 CST 2016
mZxid = 0x20049ab24
mtime = Sun Oct 09 15:45:02 CST 2016
pZxid = 0x20049ab24
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 15
numChildren = 0
# 可以看到刚刚设置的数据。
# 修改 /tuchao 中的数据为 "Happy birthday"
[zk: localhost:2181(CONNECTED) 8] set /tuchao "Happy birthday"
cZxid = 0x20049ab24
ctime = Sun Oct 09 15:45:02 CST 2016
mZxid = 0x20049b2cc
mtime = Sun Oct 09 15:51:17 CST 2016
pZxid = 0x20049ab24
cversion = 0
dataVersion = 1   # 可以发现，当数据变更时，数据版本号增加了。
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 14
numChildren = 0
# 再查看一次 /tuchao 中的数据
[zk: localhost:2181(CONNECTED) 9] get /tuchao
Happy birthday
cZxid = 0x20049ab24
ctime = Sun Oct 09 15:45:02 CST 2016
mZxid = 0x20049b2cc
mtime = Sun Oct 09 15:51:17 CST 2016
pZxid = 0x20049ab24
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 14
numChildren = 0
# 给 /tuchao 创建一个子节点 /tuchao/abc1
[zk: localhost:2181(CONNECTED) 10] create /tuchao/abc1 "abc1 node"
Created /tuchao/abc1
[zk: localhost:2181(CONNECTED) 11] ls /tuchao  
[abc1]
# 删除节点 /tuchao/abc1
[zk: localhost:2181(CONNECTED) 0] delete /tuchao/abc1
[zk: localhost:2181(CONNECTED) 1] ls /tuchao
[]
# 查看命令帮助，输入 h
[zk: localhost:2181(CONNECTED) 2] h
ZooKeeper -server host:port cmd args
stat path [watch]
set path data [version]
ls path [watch]
delquota [-n|-b] path
ls2 path [watch]
setAcl path acl
setquota -n|-b val path
history 
redo cmdno
printwatches on|off
delete path [version]
sync path
listquota path
rmr path
get path [watch]
create [-s] [-e] path data acl
addauth scheme auth
quit 
getAcl path
close 
connect host:port

zkServer的四字命令

zookeeper单机模式搭建(整理)

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