部署环境
[root@node1 ~]# uname -rm
2.6.32-504.el6.x86_64 x86_64
[root@node1 ~]# cat /etc/redhat-release
CentOS release 6.6 (Final)
创建目录
[root@node1 ~]# mkdir /{softs,app}
安装JDK
[root@node1 ~]# cd /softs/
[root@node1 softs]# tar xf jdk-8u77-linux-x64.tar.gz -C /app/
[root@node1 softs]# ln -s /app/jdk1.8.0_77/ /app/jdk
[root@node1 softs]# vim /etc/profile
export JAVA_HOME=/app/jdk
export PATH=$JAVA_HOME/bin:$JAVA_HOME/jre/bin:$PATH
exportCLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/$jre/lib:$JAVA_HOME/lib/tools.jar
[root@node1 softs]# source /etc/profile
[root@node1 softs]# java -versionjava version"1.8.0_77"
Java(TM) SE RuntimeEnvironment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-BitServer VM (build 25.77-b03, mixed mode)
[root@node1 softs]# cd
部署zookeeper
安装
[root@node1 ~]# cd /softs/
[root@node1 softs]# wget http://mirrors.cnnic.cn/apache/zookeeper/zookeeper-3.4.8/zookeeper-3.4.8.tar.gz
[root@node1 softs]# tar xf zookeeper-3.4.8.tar.gz -C /app/
[root@node1 softs]# ln -s /app/zookeeper-3.4.8/ /app/zookeeper
[root@node1 softs]# cd
配置启动
[root@node1 ~]# cd /app/zookeeper/conf/
[root@node1 conf]# cp zoo_sample.cfg zoo.cfg
[root@node1 conf]# grep ^[a-z] zoo.cfg
tickTime=2000
dataDir=/data/zookeeper
clientPort=2181
[root@node1 ~]# mkdir -p /data/zookeeper
[root@node1 ~]# vim /etc/profile
PATH=/app/zookeeper/bin:$PATH
[root@node1 ~]# source /etc/profile
[root@node1 ~]# zkServer.sh start
ZooKeeper JMX enabled bydefault
Using config:/app/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ...STARTED
[root@node1 ~]# netstat-lntp|grep 2181
tcp 0 0 :::2181 :::* LISTEN 1286/java
连接zookeeper
java连接
[root@node1 ~]# zkCli.sh -server 127.0.0.1:2181
Connecting to localhost:2181
c连接
[root@node1 ~]# cd/app/zookeeper/src/c
[root@node1 c]# ./configure
[root@node1 c]# make
[root@node1 c]# make install
[root@node1 c]# . cli_mt172.0.0.1:2821
[root@node1 c]#LD_LIBRARY_PATH=. cli_mt 127.0.0.1:2181
或
[root@node1 c]#LD_LIBRARY_PATH=. cli_st 127.0.0.1:2181
要在zookeeper的src/c目录下，但是客户端在新版的版本比较低。
操作zookeeper
一旦连接到zookeeper就可以执行一些命令，就像在文件系统一样
列出
[zk:127.0.0.1:2181(CONNECTED) 0] ls /
[zookeeper]
创建新的znode
执行create/zk_test my_data。这会创建一个新的znode，并且字符串my_data与该节点相关联
[zk:127.0.0.1:2181(CONNECTED) 1] create /zk_test my_data
Created /zk_test
[zk:127.0.0.1:2181(CONNECTED) 2] ls /
[zookeeper, zk_test]
验证
可以通过命令get /zk_test来验证数据是和这个znode相关联
[zk:127.0.0.1:2181(CONNECTED) 3] get /zk_test
my_data
cZxid = 0x14
ctime = Sat Jun 11 23:41:57CST 2016
mZxid = 0x14
mtime = Sat Jun 11 23:41:57CST 2016
pZxid = 0x14
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 7
numChildren = 0
设置
通过set命令改变与zk_test相关联的数据
[zk:127.0.0.1:2181(CONNECTED) 4] set /zk_test kevin
cZxid = 0x14
ctime = Sat Jun 11 23:41:57CST 2016
mZxid = 0x15
mtime = Sat Jun 11 23:49:22CST 2016
pZxid = 0x14
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 5
numChildren = 0
[zk:127.0.0.1:2181(CONNECTED) 5] get /zk_test
kevin
cZxid = 0x14
ctime = Sat Jun 11 23:41:57CST 2016
mZxid = 0x15
mtime = Sat Jun 11 23:49:22CST 2016
pZxid = 0x14
cversion = 0
删除
[zk:127.0.0.1:2181(CONNECTED) 6] delete /zk_test
[zk:127.0.0.1:2181(CONNECTED) 7] ls
[zk:127.0.0.1:2181(CONNECTED) 8] ls /
[zookeeper]
退出
[zk:127.0.0.1:2181(CONNECTED) 11] quit
Quitting...
停止服务
[root@node1 ~]# zkServer.sh stop