hadoop-Zookeeper安装
Ububtu18.04安装Zookeeper3.7.1
环境与版本
这里采用的ubuntu18.04环境的基本配置为:
hostname 为master
用户名为hadoop
静态IP为 192.168.100.3
网关为 192.168.100.2
防火墙已经关闭
/etc/hosts已经配置
全版本下载地址:
https://archive.apache.org/dist/zookeeper/
这里我选择3.7.1这个版本
https://archive.apache.org/dist/zookeeper/zookeeper-3.7.1/
下载到本地后,将apache-zookeeper-3.7.1-bin.tar.gz上传到ubuntu18.04的/home/hadoop/opt/app目录下,
该目录下的目录作用如下:
bin目录 框架启动停止,客户端和服务端的
conf 配置文件信息
docs文档
lib 配置文档的依赖
standlone模式安装
解压缩与配置软连接
hadoop@master:~$ cd /home/hadoop/opt/app/
# 解压缩
hadoop@master:~/opt/app$ tar -zxf apache-zookeeper-3.7.1-bin.tar.gz
查看当前目录结构:
hadoop@master:~/opt/app$ pwd# 查看当前目录
/home/hadoop/opt/app
hadoop@master:~/opt/app$ ll
总用量 9120
drwxrwxr-x 6 hadoop hadoop 409611月 1210:42 ./
drwxrwxr-x 3 hadoop hadoop 409611月 414:53 ../
drwxrwxr-x 6 hadoop hadoop 409611月 1210:41 apache-zookeeper-3.7.1-bin/
-rw-rw-r-- 1 hadoop hadoop 931174411月 1210:39 apache-zookeeper-3.7.1-bin.tar.gz
配置zookeeper的软连接
# 软连接
hadoop@master:~/opt/app$ ln -s apache-zookeeper-3.7.1-bin zookeeper
创建存储目录与修改zoo.cfg文件
切换到~/opt/app/zookeeper,配置zookeeper的数据存储-data0目录
hadoop@master:~/opt/app$ cd zookeeper # 切换到zookeeper中
hadoop@master:~/opt/app/zookeeper$ ls
bin conf docs lib LICENSE.txt NOTICE.txt README.md README_packaging.txt
hadoop@master:~/opt/app/zookeeper$ mkdir data0 # 创建data0
hadoop@master:~/opt/app/zookeeper$ ls
bin conf data0 docs lib LICENSE.txt NOTICE.txt README.md README_packaging.txt
进入~/opt/app/zookeeper/conf目录下,复制zoo_sample.cfg为zoo.cfg,
hadoop@master:~/opt/app/zookeeper$ cd conf/
hadoop@master:~/opt/app/zookeeper/conf$ ls
configuration.xsl log4j.properties zoo_sample.cfg
hadoop@master:~/opt/app/zookeeper/conf$ cp zoo_sample.cfg zoo.cfg #复制zoo.cfg
编辑zoo.cfg
hadoop@master:~/opt/app/zookeeper/conf$ vi zoo.cfg # 编辑zoo.cfg文件,编辑内容如下:# dataDir=/tmp/zookeeper 注释掉这句默认配置,然后添加下面的配置dataDir=/home/hadoop/opt/app/zookeeper/data0
# 在配置文件的最后面添加
server.1=master:2888:3888
# 如果是单节点的zookeeper集群部署可以配置多个server#server.2=master:2889:3889#server.3=master:2890:3890
配置zookeeper的环境变量
hadoop@master:~/opt/app/zookeeper/conf$ vi ~/.bashrc
#这一步会打开bashrc文件,编辑内容如下:exportZOOKEEPER_HOME=/home/hadoop/opt/app/zookeeper
exportPATH=$ZOOKEEPER_HOME/bin:$PATH
hadoop@master:~/opt/app/zookeeper/conf$ source ~/.bashrc # 生效环境变量
启动与查看zk服务端(单机版本)
启动zk服务端(单机版本)
查看zk启动状态
hadoop@master:~/opt/app/zookeeper/conf$ zkServer.sh status #查看zk启动状态
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Error contacting service. It is probably not running.
启动zkServer
hadoop@master:~/opt/app/zookeeper/conf$ zkServer.sh start #启动zkServer
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
查看zk启动状态
hadoop@master:~/opt/app/zookeeper/conf$ zkServer.sh status #查看zk启动状态,单机启动为standalone模式
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Mode: standalone
关闭zk服务端(单机版本)
zkServer.sh start # 启动zk服务端
zkServer.sh stop # 关闭zk服务端
zkServer.sh status # 查看zk服务端状态
启动zk客户端
hadoop@master:~/opt/app/zookeeper/conf$ zkCli.sh #启动zkCli,默认连接端口2181
Connecting to localhost:2181
...
...
...
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
[zk: localhost:2181(CONNECTED)0]ls /
[zookeeper][zk: localhost:2181(CONNECTED)1]help
ZooKeeper -server host:port cmd args
addauth scheme auth
close
config [-c][-w][-s]
connect host:port
create [-s][-e][-c][-t ttl] path [data][acl]
delete [-v version] path
deleteall path
delquota [-n|-b] path
get [-s][-w] path
getAcl [-s] path
history
listquota path
ls[-s][-w][-R] path
ls2 path [watch]
printwatches on|off
quit
reconfig [-s][-v version][[-file path]|[-members serverID=host:port1:port2;port3[,...]*]]|[-add serverId=host:port1:port2;port3[,...]]* [-remove serverId[,...]*]
redo cmdno
removewatches path [-c|-d|-a][-l]
rmr path
set[-s][-v version] path data
setAcl [-s][-v version][-R] path acl
setquota -n|-b val path
stat[-w] path
sync path
Command not found: Command not found help[zk: localhost:2181(CONNECTED)2] quit
WATCHER::
WatchedEvent state:Closed type:None path:null
2021-11-12 11:05:29,497 [myid:] - INFO [main:ZooKeeper@1422] - Session: 0x1000029eae60000 closed
2021-11-12 11:05:29,497 [myid:] - INFO [main-EventThread:ClientCnxn$EventThread@524] - EventThread shut down for session: 0x1000029eae60000
hadoop@master:~/opt/app/zookeeper/conf$
配置伪分布式的Zookeeper
本小节的伪分布式集群部署是指在一台机器(master)上配置多个配置文件(zoo1.cfg,zoo2.cfg,zoo3.cfg),三个配置文件中设置不一样clientPort和dataDir,然后根据不同的配置文件来启动Zookeeper服务。
备注:本部分是在standlone已经完成安装的基础上进行的。
创建并生成各自的配置文件:
配置各个zk节点的配置文件,具体如下:
hadoop@master:~/opt/app/zookeeper/conf$ pwd
/home/hadoop/opt/app/zookeeper/conf
hadoop@master:~/opt/app/zookeeper/conf$ cp zoo.cfg zoo1.cfg
hadoop@master:~/opt/app/zookeeper/conf$ cp zoo.cfg zoo2.cfg
hadoop@master:~/opt/app/zookeeper/conf$ cp zoo.cfg zoo3.cfg
分布修改这三个配置文件:
zoo1.cfg 配置文件
# dataDir=/tmp/zookeeper 注释掉这句默认配置,然后修改下面的配置dataDir=/home/hadoop/opt/app/zookeeper/data1
# clientPort=2181 注释掉15行这句话,把这句内容放在文件尾部clientPort=2181# server.1=master:2888(数据同步端口):3888(Leader选举端口)
server.1=master:2888:3888
server.2=master:2889:3889
server.3=master:2890:3890
zoo2.cfg 配置文件
# dataDir=/tmp/zookeeper 注释掉这句默认配置,然后修改下面的配置dataDir=/home/hadoop/opt/app/zookeeper/data2
# clientPort=2181 注释掉15行这句话,把这句内容放在文件尾部clientPort=2182# server.1=master:2888(数据同步端口):3888(Leader选举端口)
server.1=master:2888:3888
server.2=master:2889:3889
server.3=master:2890:3890
zoo3.cfg 配置文件
# dataDir=/tmp/zookeeper 注释掉这句默认配置,然后修改下面的配置dataDir=/home/hadoop/opt/app/zookeeper/data3
# clientPort=2183 注释掉15行这句话,把这句内容放在文件尾部clientPort=2183# server.1=master:2888(数据同步端口):3888(Leader选举端口)
server.1=master:2888:3888
server.2=master:2889:3889
server.3=master:2890:3890
server.A=B:C:D中A是一个数字,表示这个是第几号服务器,B是这个服务器的IP地址,C表示这个服务器与集群中的Leader服务器交换信息的端口,D表示集群中的Leader服务器挂了,需要一个端口来重新进行选举,选出一个新的Leader,而这个端口就是用来执行选举时服务器相互通信的端口。对于伪分布集群的配置方式,由于B都是一样,需要为不同的Zookeeper服务通信端口分配不同的端口号。
在各个data目录下创建myid文件,并存入当前服务器的编号,如下:
hadoop@master:~/opt/app/zookeeper$ pwd
/home/hadoop/opt/app/zookeeper
hadoop@master:~/opt/app/zookeeper$ touch data1/myid
hadoop@master:~/opt/app/zookeeper$ touch data2/myid
hadoop@master:~/opt/app/zookeeper$ touch data3/myid
hadoop@master:~/opt/app/zookeeper$ echo1> data1/myid
hadoop@master:~/opt/app/zookeeper$ echo2> data2/myid
hadoop@master:~/opt/app/zookeeper$ echo3> data3/myid
启动并测试Zookeeper伪分布式集群
依次启动Zookeeper服务,在启动的时候,选举算法依次投票,那么Leader
服务就是2号配置文件启动的服务。其他的节点服务都是Fllower,当启动第一台服务器的时候查看状态status是不可用的,因为集群中节点未在半数以上。集群中奇数和偶数对故障的容忍度是一致的,所以建议配置奇数个Zookeeper节点。
启动zkServer.sh并指定配置文件为zoo1.cfg
hadoop@master:~/opt/app/zookeeper$ zkServer.sh start /home/hadoop/opt/app/zookeeper/conf/zoo1.cfg # 通过zoo1.cfg启动zkServer
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo1.cfg
Starting zookeeper ... STARTED
hadoop@master:~/opt/app/zookeeper$ zkServer.sh status /home/hadoop/opt/app/zookeeper/conf/zoo1.cfg # 查看通过zoo1.cfg启动的zkServer状态
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo1.cfg
Client port found: 2181. Client address: localhost.
Error contacting service. It is probably not running.
启动zkServer.sh并指定配置文件为zoo2.cfg
hadoop@master:~/opt/app/zookeeper$ zkServer.sh start /home/hadoop/opt/app/zookeeper/conf/zoo2.cfg # 通过zoo2.cfg启动zkServer
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo2.cfg
Starting zookeeper ... STARTED
hadoop@master:~/opt/app/zookeeper$ zkServer.sh status /home/hadoop/opt/app/zookeeper/conf/zoo2.cfg # 查看通过zoo2.cfg启动的zkServer状态,为leader
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo2.cfg
Client port found: 2182. Client address: localhost.
Mode: leader
启动zkServer.sh并指定配置文件为zoo3.cfg
hadoop@master:~/opt/app/zookeeper$ zkServer.sh start /home/hadoop/opt/app/zookeeper/conf/zoo3.cfg # 通过zoo3.cfg启动zkServer
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo3.cfg
Starting zookeeper ... STARTED
hadoop@master:~/opt/app/zookeeper$ zkServer.sh status /home/hadoop/opt/app/zookeeper/conf/zoo3.cfg # 查看通过zoo3.cfg启动的zkServer状态
ZooKeeper JMX enabled by default
Using config: /home/hadoop/opt/app/zookeeper/conf/zoo3.cfg
Client port found: 2183. Client address: localhost.
Mode: follower
目前看到zoo2.cfg的进程为leader节点。
如下图:
此时使用命令jps查看所有进程:
hadoop@master:~/opt/app/zookeeper$ jps
4833 QuorumPeerMain
5060 Jps
4726 QuorumPeerMain
4607 QuorumPeerMain
客户端连接Zookeeper服务节点,则使用如下命令:
hadoop@master:~/opt/app/zookeeper$ zkCli.sh -server localhost:2181
Connecting to localhost:2181
#退出使用quit
centos安装Zookeeper3.7.1
这里采用的centos7.6环境的基本配置为:
hostname 为node1
用户名为root
静态IP为 192.168.100.3
网关为 192.168.100.2
防火墙已经关闭
/etc/hosts已经配置
全版本下载地址:
https://archive.apache.org/dist/zookeeper/
这里我选择3.7.1这个版本
https://archive.apache.org/dist/zookeeper/zookeeper-3.7.1/
下载到本地后,将apache-zookeeper-3.7.1-bin.tar.gz上传到ubuntu18.04的/home/hadoop/opt/app目录下,
该目录下的目录作用如下:
bin目录 框架启动停止,客户端和服务端的
conf 配置文件信息
docs文档
lib 配置文档的依赖
基于centos7.6伪分布模式安装
centos7.6安装zookeeper的过程与ubuntu安装zookeeper的过程完全一致。下面提供具体过程。
上传解压修改文件名
上传apache-zookeeper-3.7.1-bin.tar.gz 到/opt/software目录下,并对压缩包进行解压
[root@node1 ~]# cd /opt/software/
# 解压缩
[root@node1 ~]# tar -zxvf apache-zookeeper-3.7.1-bin.tar.gz
# 修改文件名
[root@node1 ~]# mv apache-zookeeper-3.7.1-bin zookeeper
# 创建zkdata目录
[root@node1 ~]# cd /opt/software/zookeeper
[root@node1 ~]# mkdir zkdata
复制zookeeper安装目录
复制zookeeper目录到/opt/module目录下,并复制3份,命名为001-003
cd /opt/software
cp -r zookeeper /opt/module/zookeeper001
cp -r zookeeper /opt/module/zookeeper002
cp -r zookeepe /opt/module/zookeeper003
创建并配置zoo.cfg配置文件
修改zookeeper001配置文件
首先把zookeeper001/conf下的的zoo_sample.cfg文件复制为zoo.cfg
cd /opt/module/zookeeper001/conf
cp zoo_sample.cfg zoo.cfg
修改zoo.cfg配置文件
vim zoo.cfg
修改配置如下
# 第1步:设置数据持久化目录dataDir=/opt/module/zookeeper001/zkdata
# 设置客户端连接当前ZooKeeper服务使用的端口号clientPort=2181# 设置ZooKeeper集群中每个ZooKeeper服务的地址及端口号
server.1=node1:2888:3888
server.2=node1:2889:3889
server.3=node1:2890:3890
在zookeeper001/zkdata下创建myid文件,内容为1
echo1> /opt/module/zookeeper001/zkdata/myid
修改zookeeper002配置文件
首先把zookeeper002/conf下的的zoo_sample.cfg文件复制为zoo.cfg
cd /opt/module/zookeeper001/conf
cp zoo_sample.cfg zoo.cfg
修改zoo.cfg配置文件
vim zoo.cfg
修改配置如下
# 第1步:设置数据持久化目录dataDir=/opt/module/zookeeper002/zkdata
# 设置客户端连接当前ZooKeeper服务使用的端口号clientPort=2182# 设置ZooKeeper集群中每个ZooKeeper服务的地址及端口号
server.1=node1:2888:3888
server.2=node1:2889:3889
server.3=node1:2890:3890
在zookeeper002/zkdata下创建myid文件,内容为2
echo2> /opt/module/zookeeper002/zkdata/myid
修改zookeeper003配置文件
首先把zookeeper003/conf下的的zoo_sample.cfg文件复制为zoo.cfg
cd /opt/module/zookeeper003/conf
cp zoo_sample.cfg zoo.cfg
修改zoo.cfg配置文件
vim zoo.cfg
修改配置如下
# 第1步:设置数据持久化目录dataDir=/opt/module/zookeeper003/zkdata
# 设置客户端连接当前ZooKeeper服务使用的端口号clientPort=2183# 设置ZooKeeper集群中每个ZooKeeper服务的地址及端口号
server.1=node1:2888:3888
server.2=node1:2889:3889
server.3=node1:2890:3890
在zookeeper003/zkdata下创建myid文件,内容为1
echo3> /opt/module/zookeeper001/zkdata/myid
启动并测试Zookeeper伪分布式集群
依次启动Zookeeper服务,在启动的时候,选举算法依次投票,那么Leader
服务就是2号配置文件启动的服务。其他的节点服务都是Fllower,当启动第一台服务器的时候查看状态status是不可用的,因为集群中节点未在半数以上。集群中奇数和偶数对故障的容忍度是一致的,所以建议配置奇数个Zookeeper节点。
启动zookeeper001下的zkServer.sh
[root@node1 module]# cd /opt/module/[root@node1 module]# ./zookeeper001/bin/zkServer.sh start # 启动zkServer
输出为:
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper001/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
查看zkServer状态
[root@node1 module]# ./zookeeper001/bin/zkServer.sh status # 查看zkServer状态
输出为:
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper001/bin/../conf/zoo.cfg
Client port found: 2181. Client address: localhost.
Error contacting service. It is probably not running.
启动zookeeper002下的zkServer.sh
[root@node1 module]# cd /opt/module/[root@node1 module]# ./zookeeper002/bin/zkServer.sh start # 启动zkServer
输出为:
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper002/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
查看zkServer状态
[root@node1 module]# ./zookeeper002/bin/zkServer.sh status # 查看zkServer状态
输出为:
Using config: /opt/module/zookeeper002/bin/../conf/zoo.cfg
Client port found: 2182. Client address: localhost. Client SSL: false.
Mode: leader
启动zookeeper003下的zkServer.sh
[root@node1 module]# cd /opt/module/[root@node1 module]# ./zookeeper003/bin/zkServer.sh start # 启动zkServer
输出为:
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper003/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
查看zkServer状态
[root@node1 module]# ./zookeeper003/bin/zkServer.sh status # 查看zkServer状态
输出为:
ZooKeeper JMX enabled by default
Using config: /opt/module/zookeeper003/bin/../conf/zoo.cfg
Client port found: 2183. Client address: localhost. Client SSL: false.
Mode: follower
启动后,myid值为2的zookeeper002下的称为了leader。
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