zookeeper安装部署
1.安装zookeeper单机模式配置java环境
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# wget https://www.reucon.com/cdn/java/jdk-8u45-linux-x64.tar.gz
# tar xf jdk-8u45-linux-x64.tar.gz
# cp -r jdk1.8.0_45 /usr/local/
# cat /etc/profile.d/java.sh
JAVA_HOME=/usr/local/jdk1.8.0_45
JAVA_BIN=/usr/local/jdk1.8.0_45/bin
JRE_HOME=/usr/local/jdk1.8.0_45/jre
PATH=$PATH://usr/local/jdk1.8.0_45/bin:/usr/local/jdk1.8.0_45/jre/bin
CLASSPATH=/usr/local/jdk1.8.0_45/jre/lib:/usr/local/jdk1.8.0_45/lib:/usr/local/jdk1.8.0_45/jre/lib/charsets.jar
# source /etc/profile.d/java.sh
# java -version
java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)
下载软件包
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# wget http://mirrors.hust.edu.cn/apache/zookeeper/zookeeper-3.4.6/zookeeper-3.4.6.tar.gz
安装
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# tar xf zookeeper-3.4.6.tar.gz -C /usr/local/
# ln -s /usr/local/zookeeper-3.4.6/ /usr/local/zookeeper
# pwd
/usr/local/zookeeper/conf
# cp zoo_sample.cfg zoo.cfg
#修改配置文件
# egrep -v "^#|^$" /usr/local/zookeeper/conf/zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/build
clientPort=2181
dataLogDir=/data/zookeeper/logs
#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
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# /usr/local/zookeeper/bin/zkServer.sh start
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
#查看结果
# netstat -tunlp |grep 2181
tcp 0 0 :::2181 :::* LISTEN 1444/java
2.安装zookeeper集群
zookeeper-1 192.168.3.19
zookeeper-2 192.168.3.20
zookeeper-1操作:
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#停止zookeeper服务
# /usr/local/zookeeper/bin/zkServer.sh stop
JMX enabled by default
Using config: /usr/local/zookee
#修改配置文件/usr/local/zookeeper/conf/zoo.cfg
# egrep -v "^$|^#" /usr/local/zookeeper/conf/zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/build
clientPort=2181
dataLogDir=/data/zookeeper/logs
server.1 = 192.168.3.19:2888:3888
server.2 = 192.168.3.20:2888:3888
#配置myid
# cat /data/zookeeper/build/myid
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zookeeper-2需要安装java和zookeeper，过程请看上文
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#配置文件内容如下
# egrep -v "^$|^#" /usr/local/zookeeper/conf/zoo.cfg
tickTime=2000
initLimit=10
syncLimit=5
dataDir=/data/zookeeper/build
clientPort=2181
dataLogDir=/data/zookeeper/logs
server.1 = 192.168.3.19:2888:3888
server.2 = 192.168.3.20:2888:3888
#启动服务
# /usr/local/zookeeper/bin/zkServer.sh start
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
最后验证集群状态
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#zookeeper-1
# /usr/local/zookeeper/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: leader
#zookeeper-2
# /usr/local/zookeeper/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/local/zookeeper/bin/../conf/zoo.cfg
Mode: follower
通过客户端脚本验证
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# /usr/local/zookeeper/bin/zkCli.sh
ls /
# 第一次部署Zookeeper集群，默认创建名为/zookeeper的节点
ls /zookeeper
# 读取znode数据
get /zookeeper/quota
cZxid = 0x0
ctime = Thu Jan 01 08:00:00 CST 1970
mZxid = 0x0
mtime = Thu Jan 01 08:00:00 CST 1970
pZxid = 0x0
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 0
numChildren = 0
# 创建znode
create /zk-book 123
Created /zk-book
ls /
get /zk-book
123
cZxid = 0x300000004
ctime = Tue Aug 11 14:46:48 CST 2015
mZxid = 0x300000004
mtime = Tue Aug 11 14:46:48 CST 2015
pZxid = 0x300000004
cversion = 0
dataVersion = 0 # version的版本为0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 3
numChildren = 0
# 更新znode的值
set /zk-book 456
cZxid = 0x300000004
ctime = Tue Aug 11 14:46:48 CST 2015
mZxid = 0x300000005
mtime = Tue Aug 11 14:47:45 CST 2015
pZxid = 0x300000004
cversion = 0
dataVersion = 1 # 更新后version的版本为1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 3
numChildren = 0
#在zookeeper-2上查看结果
# /usr/local/zookeeper/bin/zkCli.sh
get /zk-book
456
cZxid = 0x300000004
ctime = Tue Aug 11 14:46:48 CST 2015
mZxid = 0x300000005
mtime = Tue Aug 11 14:47:45 CST 2015
pZxid = 0x300000004
cversion = 0
dataVersion = 1
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 3
numChildren = 0
#在zookeeper-2上删除/zk-book
delete /zk-book
ls /
#在zookeeper-1上查看结果
ls /
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