HBASE安装和简单测试过程分享给新手，修改HDFSS设置，增加下面的设置,HBASE需要访问大量的文件，修改nofile和nproc设置。
HBASE安装和简单测试过程分享给新手
1. 修改HDFSS设置
vi conf/hdfs-site.xml
增加下面的设置,HBASE需要访问大量的文件
<property>
<name>dfs.datanode.max.xcievers</name>
<value>4096</value>
</property>
2. 设置NTP同步
rpm -qa |grep ntp
master用缺省配置
slaves:
vi /etc/ntp.conf
server 192.168.110.127
把缺省配置的server都去掉，改为master的地址
chkconfig ntpd on
service ntpd restart
另外：最好使用同一时区
ln -sf /usr/share/zoneinfo/posix/Asia/Shanghai /etc/localtime
3. 修改nofile和nproc设置
HBase需要使用很多文件，每次flush都是写一个新文件,缺省1024远远不够
vi /etc/security/limits.conf
hadoop - nofile 32768
hadoop - nproc 32768
重新登录hadoop,验证一下
ulimit -a
4.下载和安装
到http://hbase.apache.org去下载最新的稳定版本
tar zxf hbase-0.92.1.tar.gz
5. 设置环境变量
export HBASE_HOME=$HOME/hbase-0.92.1
export HBASE_CONF_DIR=$HOME/hbase-conf
同时设置添加到PATH和CLASSPATH
6. 配置
cp -r $HBASE_HOME/conf $HOME/hbase-conf
vi hbase-env.sh
export JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre
export HBASE_HEAPSIZE=300
export HBASE_OPTS="-XX:+UseConcMarkSweepGC"
export HBASE_LOG_DIR=${HBASE_HOME}/logs
export HBASE_MANAGES_ZK=true
vi hdfs-site.xml
添加下面的配置，开启durable sync特性,Hadoop 0.20.205以上的版本有的功能
开启这个功能十分重要，否则HBASE会丢失数据。（本人猜测，这是些Hlog的需要,需要随时appdend redo log,而HDFS一般只能建新文件）
<configuration>
<property>
<name>dfs.support.append</name>
<value>true</value>
</property>
</configuration>
在Hadoop -.20.205的elease notes上有这么一句：
* This release includes a merge of append/hsynch/hflush capabilities from 0.20-append branch, to support HBase in secure mode.
7. 设置Fully-distributed模式
vi hdfs-site.xml
设置hbase.rootdir和hbase.cluster.distributed=true
<property>
<name>hbase.rootdir</name>
<value>hdfs://master:9000/hbase</value>
</property>
<property>
<name>hbase.cluster.distributed</name>
<value>true</value>
</property>
8. 设置RegionServers
cat regionservers
slave1
slave2
9. 配置ZooKeepers
vi hbase-env.sh
export HBASE_MANAGES_ZK=true
vi hdfs-site.xml
<property>
<name>hbase.zookeeper.property.clientPort</name>
<value>2222</value>
</property>
<property>
<name>hbase.zookeeper.quorum</name>
<value>slave1,slave2</value>
</property>
<property>
<name>hbase.zookeeper.property.dataDir</name>
<value>/home/hadoop/zookeeper</value>
</property>
10. 复制安装配置到其他节点
scp -r conf slave1:
scp -r conf slave2:
scp -r hbase-conf slave1:
scp -r hbase-conf slave2:
scp -r hbase-0.92.1 slave1:
scp -r hbase-0.92.1 slave2:
scp -r .bash_profile slave1:
scp -r .bash_profile slave2:
11. 重新登录，重启hadoop
stop-all.sh
start-all.sh
jps
12. 启动HBASE
start-hbase.sh
验证，
用jps命令查看java进程
Master上有
11420 HMaster
ZoomKeeper上有
575 HQuorumPeer
RegionServer上有
686 HRegionServer
13 简单测试
hbase shell
hbase(main):006:0> create 'test','data'
0 row(s) in 1.1190 seconds
hbase(main):007:0> list
TABLE
test
1 row(s) in 0.0270 seconds
hbase(main):009:0> put 'test','1','data:1','xxxx'
0 row(s) in 0.1220 seconds
hbase(main):010:0> put 'test','1','data:1','xxxx'
0 row(s) in 0.0120 seconds
hbase(main):011:0> put 'test','1','data:1','xxxx'
0 row(s) in 0.0120 seconds
hbase(main):015:0* put 'test','2','data:2','yyy'
0 row(s) in 0.0080 seconds
hbase(main):016:0> put 'test','3','data:3','zzz'
0 row(s) in 0.0070 seconds
hbase(main):017:0>
hbase(main):018:0*
hbase(main):019:0* scan 'test'
ROW COLUMN+CELL
1 column=data:1, timestamp=1333160616029, value=xxxx
2 column=data:2, timestamp=1333160650780, value=yyy
3 column=data:3, timestamp=1333160664490, value=zzz
3 row(s) in 0.0260 seconds
hbase(main):020:0>
14. 查看了HDFS上建立的文件
./hadoop dfs -lsr /hbase
Warning: $HADOOP_HOME is deprecated.
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/-ROOT-
-rw-r--r-- 2 hadoop supergroup 551 2012-03-31 10:07 /hbase/-ROOT-/.tableinfo.0000000001
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/-ROOT-/.tmp
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/-ROOT-/70236052
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/-ROOT-/70236052/.oldlogs
-rw-r--r-- 2 hadoop supergroup 411 2012-03-31 10:07 /hbase/-ROOT-/70236052/.oldlogs/hlog.1333159627476
-rw-r--r-- 2 hadoop supergroup 109 2012-03-31 10:07 /hbase/-ROOT-/70236052/.regioninfo
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/-ROOT-/70236052/info
-rw-r--r-- 2 hadoop supergroup 714 2012-03-31 10:07 /hbase/-ROOT-/70236052/info/bd225e173164476f88111f622f5a7839
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.META.
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.META./1028785192
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.META./1028785192/.oldlogs
-rw-r--r-- 2 hadoop supergroup 124 2012-03-31 10:07 /hbase/.META./1028785192/.oldlogs/hlog.1333159627741
-rw-r--r-- 2 hadoop supergroup 111 2012-03-31 10:07 /hbase/.META./1028785192/.regioninfo
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.META./1028785192/info
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.logs
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.logs/slave1,60020,1333159627316
-rw-r--r-- 3 hadoop supergroup 293 2012-03-31 10:07 /hbase/.logs/slave1,60020,1333159627316/slave1%2C60020%2C1333159627316.1333159637444
-rw-r--r-- 3 hadoop supergroup 0 2012-03-31 10:07 /hbase/.logs/slave1,60020,1333159627316/slave1%2C60020%2C1333159627316.1333159637904
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:07 /hbase/.logs/slave2,60020,1333159627438
-rw-r--r-- 3 hadoop supergroup 0 2012-03-31 10:07 /hbase/.logs/slave2,60020,1333159627438/slave2%2C60020%2C1333159627438.1333159638583
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:18 /hbase/.oldlogs
-rw-r--r-- 2 hadoop supergroup 38 2012-03-31 10:07 /hbase/hbase.id
-rw-r--r-- 2 hadoop supergroup 3 2012-03-31 10:07 /hbase/hbase.version
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:22 /hbase/test
-rw-r--r-- 2 hadoop supergroup 513 2012-03-31 10:22 /hbase/test/.tableinfo.0000000001
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:22 /hbase/test/.tmp
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:22 /hbase/test/929f7e1caca5825974e0e991543fe2c5
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:22 /hbase/test/929f7e1caca5825974e0e991543fe2c5/.oldlogs
-rw-r--r-- 2 hadoop supergroup 124 2012-03-31 10:22 /hbase/test/929f7e1caca5825974e0e991543fe2c5/.oldlogs/hlog.1333160541983
-rw-r--r-- 2 hadoop supergroup 219 2012-03-31 10:22 /hbase/test/929f7e1caca5825974e0e991543fe2c5/.regioninfo
drwxr-xr-x - hadoop supergroup 0 2012-03-31 10:22 /hbase/test/929f7e1caca5825974e0e991543fe2c5/data
Error
==========================================
slave1: java.io.IOException: Could not find my address: db1 in list of ZooKeeper quorum servers
slave1: at org.apache.hadoop.hbase.zookeeper.HQuorumPeer.writeMyID(HQuorumPeer.java:133)
slave1: at org.apache.hadoop.hbase.zookeeper.HQuorumPeer.main(HQuorumPeer.java:60)
Reason:hostname是db1,但是我配置的名字是slave1,但是是同一个IP.HBase会用hostname取得的主机名来方向方向解析DNS
Solution:
修改hostname为slave1重新启动server
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