Zookeeper与HBase的安装

　　一、Zookeeper的安装

　　1.http://www-us.apache.org/dist/zookeeper/stable/下载Zookeeper安装包，并将zookeeper-3.4.12.tar.gz复制到/home/jun下并解压

[jun@master ~]$ cd zookeeper-3.4./
[jun@master zookeeper-3.4.]$ ls -l
total
drwxr-xr-x.   jun jun      Mar  : bin
-rw-rw-r--.   jun jun    Mar  : build.xml
drwxr-xr-x.   jun jun       Mar  : conf
drwxr-xr-x.  jun jun      Mar  : contrib
drwxr-xr-x.   jun jun     Mar  : dist-maven
drwxr-xr-x.   jun jun     Mar  : docs
-rw-rw-r--.   jun jun     Mar  : ivysettings.xml
-rw-rw-r--.   jun jun     Mar  : ivy.xml
drwxr-xr-x.   jun jun     Mar  : lib
-rw-rw-r--.   jun jun    Mar  : LICENSE.txt
-rw-rw-r--.   jun jun     Mar  : NOTICE.txt
-rw-rw-r--.   jun jun     Mar  : README.md
-rw-rw-r--.   jun jun     Mar  : README_packaging.txt
drwxr-xr-x.   jun jun       Mar  : recipes
drwxr-xr-x.   jun jun      Mar  : src
-rw-rw-r--.   jun jun  Mar  : zookeeper-3.4..jar
-rw-rw-r--.   jun jun      Mar  : zookeeper-3.4..jar.asc
-rw-rw-r--.   jun jun       Mar  : zookeeper-3.4..jar.md5
-rw-rw-r--.   jun jun       Mar  : zookeeper-3.4..jar.sha1

　　2.使用gedit编辑zoo.cfg配置文件

[jun@master zookeeper-3.4.]$ cp /home/jun/zookeeper-3.4./conf/zoo_sample.cfg  /home/jun/zookeeper-3.4./conf/zoo.cfg
[jun@master zookeeper-3.4.]$ gedit /home/jun/zookeeper-3.4./conf/zoo.cfg 

　　将下面的配置增加到最后面，配置的意思是“服务器编号、服务器地址、LF通信端口（Leader与Follower）、选举端口”

server.=master::
server.=slave0::
server.=slave1::

　　3.创建节点标志文件　　

　　由于在zoo.cfg当中配置了三台服务器，每一台服务器本地也需要一个myid文件，里面包含服务器的ID号，需要在三台机器上都创建myid文件。以master为例：

　　首先递归创建目录（-p）

[jun@master zookeeper-3.4.]$ mkdir -p /tmp/zookeeper
[jun@master zookeeper-3.4.]$ gedit /tmp/zookeeper/myid

　　然后新建myid文件并输入对应的id号，只输入一个1即可。

[jun@master zookeeper-3.4.]$ cat /tmp/zookeeper/myid

　　另外两台机器同理。

　　4.将Zookeeper安装文件从master复制到slave上（-r的意思是拷贝所有的文件和文件夹）

[jun@master zookeeper-3.4.]$ scp -r /home/jun/zookeeper-3.4./   slave0:~
[jun@master zookeeper-3.4.]$ scp -r /home/jun/zookeeper-3.4./   slave1:~

　　5.Zookeeper集群的启动

　　（1）需要在三个节点上分别执行启动操作

[jun@master zookeeper-3.4.]$ /home/jun/zookeeper-3.4./bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4./bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

[jun@slave0 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

[jun@slave1 ~]$ /home/jun/zookeeper-3.4.12/bin/zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4.12/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED

　　（2）至少启动两台服务器后，集群才会开始选举leader节点，可以在三台服务器上分别查看集群的状态，可以看到slave0节点是leader节点。

[jun@master ~]$ /home/jun/zookeeper-3.4./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4./bin/../conf/zoo.cfg
Mode: follower

[jun@slave0 ~]$ /home/jun/zookeeper-3.4./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4./bin/../conf/zoo.cfg
Mode: leader

[jun@slave1 ~]$ /home/jun/zookeeper-3.4./bin/zkServer.sh status
ZooKeeper JMX enabled by default
Using config: /home/jun/zookeeper-3.4./bin/../conf/zoo.cfg
Mode: follower

　　（3）Zookeeper客户端交互式操作

[jun@master ~]$ /home/jun/zookeeper-3.4./bin/zkCli.sh -server master:
Connecting to master:
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:zookeeper.version=3.4.-e5259e437540f349646870ea94dc2658c4e44b3b, built on // : GMT
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:host.name=master
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.version=1.8.0_171
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.vendor=Oracle Corporation
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.home=/usr/java/jdk1..0_171/jre
-- ::, [myid:] - INFO  [main:Environment@] - Client environment:java.class.path=/home/jun/zookeeper-3.4./bin/../build/classes:/home/jun/zookeeper-3.4./bin/../build/lib/*.jar:/home/jun/zookeeper-3.4.12/bin/../lib/slf4j-log4j12-1.7.25.jar:/home/jun/zookeeper-3.4.12/bin/../lib/slf4j-api-1.7.25.jar:/home/jun/zookeeper-3.4.12/bin/../lib/netty-3.10.6.Final.jar:/home/jun/zookeeper-3.4.12/bin/../lib/log4j-1.2.17.jar:/home/jun/zookeeper-3.4.12/bin/../lib/jline-0.9.94.jar:/home/jun/zookeeper-3.4.12/bin/../lib/audience-annotations-0.5.0.jar:/home/jun/zookeeper-3.4.12/bin/../zookeeper-3.4.12.jar:/home/jun/zookeeper-3.4.12/bin/../src/java/lib/*.jar:/home/jun/zookeeper-3.4.12/bin/../conf:
2018-07-23 14:06:51,051 [myid:] - INFO  [main:Environment@100] - Client environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
2018-07-23 14:06:51,051 [myid:] - INFO  [main:Environment@100] - Client environment:java.io.tmpdir=/tmp
2018-07-23 14:06:51,051 [myid:] - INFO  [main:Environment@100] - Client environment:java.compiler=<NA>
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:os.name=Linux
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:os.arch=amd64
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:os.version=3.10.0-862.el7.x86_64
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:user.name=jun
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:user.home=/home/jun
2018-07-23 14:06:51,052 [myid:] - INFO  [main:Environment@100] - Client environment:user.dir=/home/jun
2018-07-23 14:06:51,053 [myid:] - INFO  [main:ZooKeeper@441] - Initiating client connection, connectString=master:2181 sessionTimeout=30000 watcher=org.apache.zookeeper.ZooKeeperMain$MyWatcher@799f7e29
Welcome to ZooKeeper!
2018-07-23 14:06:51,111 [myid:] - INFO  [main-SendThread(master:2181):ClientCnxn$SendThread@1028] - Opening socket connection to server master/192.168.1.100:2181. Will not attempt to authenticate using SASL (unknown error)
JLine support is enabled
2018-07-23 14:06:51,191 [myid:] - INFO  [main-SendThread(master:2181):ClientCnxn$SendThread@878] - Socket connection established to master/192.168.1.100:2181, initiating session
[zk: master:2181(CONNECTING) 0] 2018-07-23 14:06:51,269 [myid:] - INFO  [main-SendThread(master:2181):ClientCnxn$SendThread@1302] - Session establishment complete on server master/192.168.1.100:2181, sessionid = 0x1000005d8900000, negotiated timeout = 30000

WATCHER::

WatchedEvent state:SyncConnected type:None path:null

[zk: master:2181(CONNECTED) 0] help
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
[zk: master:2181(CONNECTED) 1] quit
Quitting...
2018-07-23 14:07:36,575 [myid:] - INFO  [main:ZooKeeper@687] - Session: 0x1000005d8900000 closed
2018-07-23 14:07:36,577 [myid:] - INFO  [main-EventThread:ClientCnxn$EventThread@521] - EventThread shut down for session: 0x1000005d8900000

　　

　　二、HBase的安装

　　1.从http://apache.fayea.com/hbase/stable/下载hbase-1.2.6.1-bin.tar.gz并赋值到/home/jun下并解压。、

[jun@master ~]$ cd hbase-1.2.6.1/
[jun@master hbase-1.2.6.1]$ ls -l
total
drwxr-xr-x.   jun jun    Jun   : bin
-rw-r--r--.   jun jun  Jun   : CHANGES.txt
drwxr-xr-x.   jun jun     Jun   : conf
drwxr-xr-x.  jun jun    Jun   : docs
drwxr-xr-x.   jun jun      Jun   : hbase-webapps
-rw-rw-r--.   jun jun     Jun   : LEGAL
drwxrwxr-x.   jun jun    Jul  : lib
-rw-rw-r--.   jun jun  Jun   : LICENSE.txt
-rw-rw-r--.   jun jun   Jun   : NOTICE.txt
-rw-r--r--.   jun jun    Jun   : README.txt

　　2.修改conf文件夹下的环境变量hbase-env.sh

# The java implementation to use.  Java 1.7+ required.
export JAVA_HOME=/usr/java/jdk1..0_171/

　　由于使用的jdk1.8，因此还需要将下面两行注释掉：

# Configure PermSize. Only needed in JDK7. You can safely remove it for JDK8+
#export HBASE_MASTER_OPTS="$HBASE_MASTER_OPTS -XX:PermSize=128m -XX:MaxPermSize=128m"
#export HBASE_REGIONSERVER_OPTS="$HBASE_REGIONSERVER_OPTS -XX:PermSize=128m -XX:MaxPermSize=128m"

　　3.修改conf文件夹下的配置文件hbase-site.xml

<configuration>

    <property>
        <name>hbase.cluster.distributed</name>
        <value>true</value>
    </property>

    <property>
        <name>hbase.rootdir</name>
        <value>hdfs://master:9000/hbase</value>
    </property>

    <property>
        <name>hbase.zookeeper.quorum</name>
        <value>master</value>
    </property>

    <property>
        <name>hbase.master.info.port</name>
        <value></value>
    </property>

</configuration>

　　4.设置conf文件夹下的regionservers

　　regionservers文件类似Hadoop的slaves文件，其中保存了rigionserver的列表，启动HBase的时候，系统将根据该文件建立HBase集群。需要先删除localhost并添加两条配置

slave0
slave1

　　5.设置linux环境变量并source生效

#hbase
export HBASE_HOME=/home/jun/hbase-1.2.6.1/
export PATH=$HBASE_HOME/bin:$PATH
export HADOOP_CLASSPATH=$HBASE_HOME/lib/*

　　6.将HBase安装文件复制到slave节点

[jun@master conf]$ scp -r /home/jun/hbase-1.2.6.1/  slave0:~/
[jun@master conf]$ scp -r /home/jun/hbase-1.2.6.1/  slave1:~/

　　7.启动并验证HBase

　　（1）执行start-hbase.sh启动HBase，可以看到，系统首先启动HBase自带的ZooKeeper，然后启动HBase的HMaster，接着分别启动slave节点上的regionservers。

[jun@master conf]$ start-hbase.sh
master: starting zookeeper, logging to /home/jun/hbase-1.2.6.1/bin/../logs/hbase-jun-zookeeper-master.out
starting master, logging to /home/jun/hbase-1.2.6.1//logs/hbase-jun-master-master.out
slave0: starting regionserver, logging to /home/jun/hbase-1.2.6.1/bin/../logs/hbase-jun-regionserver-slave0.out
slave1: starting regionserver, logging to /home/jun/hbase-1.2.6.1/bin/../logs/hbase-jun-regionserver-slave1.out

　　（2）查看各结点的jps，其中HMaster是HBase的主控节点进程，HQuorumPeer是HBase的ZooKeeper进程（即HBase内置的ZooKeeper）。

[jun@master ~]$ jps
 Jps
 SecondaryNameNode
 ResourceManager
 HMaster
 HQuorumPeer
 NameNode

[jun@slave0 ~]$ jps
 NodeManager
 HRegionServer
 QuorumPeerMain
 DataNode
 Jps

[jun@slave1 ~]$ jps
 DataNode
 Jps
 QuorumPeerMain
 HRegionServer
 NodeManager

　　（3）使用Web方式查看HBase系统的运行状态，访问http://master:60010

　　三、HBase的Shell命令

　　执行hbase shell即可进入HBase Shell

　　1.创建表，其中第一个参数是表名，f1和f12是列名

hbase(main)::> create "test1", {NAME => 'f1', VERSION => }
Unknown argument ignored for column family f1: 1.8.
 row(s) in 2.6300 seconds

=> Hbase::Table - test1
hbase(main)::> create 'test2', 'f12'
 row(s) in 2.2360 seconds

=> Hbase::Table - test2

　　2.查看列表

hbase(main)::> list
TABLE
test1
test2
 row(s) in 0.0270 seconds

=> ["test1", "test2"]

　　3.插入数据，其中test1是表名，id001是行键（row key），f1是列族名，uid是属性名，001是属性值

hbase(main)::> put 'test1', 'id001', 'f1:uid', ''
 row(s) in 0.2300 seconds

　　4.扫描查询数据

hbase(main)::> scan 'test1'
ROW                                   COLUMN+CELL
 id001                                column=f1:uid, timestamp=, value=
 row(s) in 0.0750 seconds

　　5.查看表结构

hbase(main)::> describe 'test1'
Table test1 is ENABLED
test1
COLUMN FAMILIES DESCRIPTION
{NAME => 'f1', BLOOMFILTER => 'ROW', VERSIONS => '', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL => '
FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '', BLOCKCACHE => 'true', BLOCKSIZE => '', REPLICATION_SCOPE => ''}
 row(s) in 0.0310 seconds

hbase(main)::> describe 'test2'
Table test2 is ENABLED
test2
COLUMN FAMILIES DESCRIPTION
{NAME => 'f12', BLOOMFILTER => 'ROW', VERSIONS => '', IN_MEMORY => 'false', KEEP_DELETED_CELLS => 'FALSE', DATA_BLOCK_ENCODING => 'NONE', TTL =>
'FOREVER', COMPRESSION => 'NONE', MIN_VERSIONS => '', BLOCKCACHE => 'true', BLOCKSIZE => '', REPLICATION_SCOPE => ''}
 row(s) in 0.0140 seconds

　　6.删除表

hbase(main)::> list
TABLE
test1
test2
 row(s) in 0.0100 seconds

=> ["test1", "test2"]
hbase(main)::> disable 'test2'
 row(s) in 2.2890 seconds

hbase(main)::> drop 'test2'
 row(s) in 1.2660 seconds

hbase(main)::> list
TABLE
test1
 row(s) in 0.0110 seconds

=> ["test1"]

　　7.退出HBase Shell

hbase(main)::> exit

　　四、HBase和ZooKeeper的关系

　　如果用户在使用HBase自带的ZooKeeper的时候出现异常，导致HBase不能正常工作，这时可以停止使用自带的Zookeeper，转而启动独立安装的ZooKeeper，并重启HBase，可以快速解决上述问题。

　　要想让HBase使用独立安装的Zookeeper，需要对HBase进行一些配置上的修改。

　　1.修改conf/hbase-env.sh文件，添加如下代码（true表示使用自带的ZooKeeper）

export HBASE_MANAGES_ZK=false

　　2.将Zookeeper配置文件复制到HBase的CLASSPATH

cp /home/jun/zookeeper-3.4./conf/zoo.cfg  /home/jun/hbase-1.2.6.1/conf

　　3.重启HBase即可