HBase學習之路 (二)HBase集群安裝
前提
1、HBase 依賴於 HDFS 做底層的數據存儲
2、HBase 依賴於 MapReduce 做數據計算
3、HBase 依賴於 ZooKeeper 做服務協調
4、HBase源碼是java編寫的,安裝需要依賴JDK
版本選擇
打開官方的版本說明http://hbase.apache.org/1.2/book.html
JDK的選擇
Hadoop的選擇
此處我們的hadoop版本用的的是2.7.5,HBase選擇的版本是1.2.6
安裝
1、zookeeper的安裝
參考http://www.cnblogs.com/qingyunzong/p/8619184.html
2、Hadoopd的安裝
參考http://www.cnblogs.com/qingyunzong/p/8634335.html
3、下載安裝包
找到官網下載 hbase 安裝包 hbase-1.2.6-bin.tar.gz,這裏給大家提供一個下載地址: http://mirrors.hust.edu.cn/apache/hbase/
4、上傳服務器並解壓縮到指定目錄
[hadoop@hadoop1 ~]$ ls apps data hbase-1.2.6-bin.tar.gz hello.txt log zookeeper.out [hadoop@hadoop1 ~]$ tar -zxvf hbase-1.2.6-bin.tar.gz -C apps/
5、修改配置文件
配置文件目錄在安裝包的conf文件夾中
(1)修改hbase-env.sh
[hadoop@hadoop1 conf]$ vi hbase-env.sh
export JAVA_HOME=/usr/local/jdk1.8.0_73
export HBASE_MANAGES_ZK=false
(2)修改hbase-site.xml
[hadoop@hadoop1 conf]$ vi hbase-site.xml
<configuration> <property> <!--指定 hbase 在 HDFS 上存儲的路徑 --> <name>hbase.rootdir</name> <value>hdfs://myha01/hbase126</value> </property> <property> <!-- 指定 hbase 是分布式的 --> <name>hbase.cluster.distributed</name> <value>true</value> </property> <property> <!-- 指定 zk 的地址,多個用“,”分割 --> <name>hbase.zookeeper.quorum</name> <value>hadoop1:2181,hadoop2:2181,hadoop3:2181,hadoop4:2181</value> </property> </configuration>
(3)修改regionservers
[hadoop@hadoop1 conf]$ vi regionservers
hadoop1
hadoop2
hadoop3
hadoop4
(4)修改backup-masters
該文件是不存在的,先自行創建
[hadoop@hadoop1 conf]$ vi backup-masters
hadoop4
(5)修改hdfs-site.xml 和 core-site.xml
最重要一步,要把 hadoop 的 hdfs-site.xml 和 core-site.xml 放到 hbase-1.2.6/conf 下
[hadoop@hadoop1 conf]$ cd ~/apps/hadoop-2.7.5/etc/hadoop/
[hadoop@hadoop1 hadoop]$ cp core-site.xml hdfs-site.xml ~/apps/hbase-1.2.6/conf/
6、將HBase安裝包分發到其他節點
分發之前先刪除HBase目錄下的docs文件夾,
[hadoop@hadoop1 hbase-1.2.6]$ rm -rf docs/
在進行分發
[hadoop@hadoop1 apps]$ scp -r hbase-1.2.6/ hadoop2:$PWD
[hadoop@hadoop1 apps]$ scp -r hbase-1.2.6/ hadoop3:$PWD
[hadoop@hadoop1 apps]$ scp -r hbase-1.2.6/ hadoop4:$PWD
7、 同步時間
HBase 集群對於時間的同步要求的比 HDFS 嚴格,所以,集群啟動之前千萬記住要進行 時間同步,要求相差不要超過 30s
8、配置環境變量
所有服務器都有進行配置
[hadoop@hadoop1 apps]$ vi ~/.bashrc
#HBase
export HBASE_HOME=/home/hadoop/apps/hbase-1.2.6
export PATH=$PATH:$HBASE_HOME/bin
使環境變量立即生效
[hadoop@hadoop1 apps]$ source ~/.bashrc
啟動HBase集群
嚴格按照啟動順序進行
1、啟動zookeeper集群
每個zookeeper節點都要執行以下命令
[hadoop@hadoop1 apps]$ zkServer.sh start
ZooKeeper JMX enabled by default
Using config: /home/hadoop/apps/zookeeper-3.4.10/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[hadoop@hadoop1 apps]$
2、啟動HDFS集群及YARN集群
如果需要運行MapReduce程序則啟動yarn集群,否則不需要啟動
[hadoop@hadoop1 apps]$ start-dfs.sh
Starting namenodes on [hadoop1 hadoop2]
hadoop2: starting namenode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-namenode-hadoop2.out
hadoop1: starting namenode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-namenode-hadoop1.out
hadoop3: starting datanode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-datanode-hadoop3.out
hadoop4: starting datanode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-datanode-hadoop4.out
hadoop2: starting datanode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-datanode-hadoop2.out
hadoop1: starting datanode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-datanode-hadoop1.out
Starting journal nodes [hadoop1 hadoop2 hadoop3]
hadoop3: starting journalnode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-journalnode-hadoop3.out
hadoop2: starting journalnode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-journalnode-hadoop2.out
hadoop1: starting journalnode, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-journalnode-hadoop1.out
Starting ZK Failover Controllers on NN hosts [hadoop1 hadoop2]
hadoop2: starting zkfc, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-zkfc-hadoop2.out
hadoop1: starting zkfc, logging to /home/hadoop/apps/hadoop-2.7.5/logs/hadoop-hadoop-zkfc-hadoop1.out
[hadoop@hadoop1 apps]$
啟動完成之後檢查以下namenode的狀態
[hadoop@hadoop1 apps]$ hdfs haadmin -getServiceState nn1
standby
[hadoop@hadoop1 apps]$ hdfs haadmin -getServiceState nn2
active
[hadoop@hadoop1 apps]$
3、啟動HBase
保證 ZooKeeper 集群和 HDFS 集群啟動正常的情況下啟動 HBase 集群 啟動命令:start-hbase.sh,在哪臺節點上執行此命令,哪個節點就是主節點
[hadoop@hadoop1 conf]$ start-hbase.sh
starting master, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-master-hadoop1.out
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
hadoop3: starting regionserver, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-regionserver-hadoop3.out
hadoop4: starting regionserver, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-regionserver-hadoop4.out
hadoop2: starting regionserver, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-regionserver-hadoop2.out
hadoop3: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
hadoop3: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
hadoop4: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
hadoop4: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
hadoop2: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
hadoop2: Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
hadoop1: starting regionserver, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-regionserver-hadoop1.out
hadoop4: starting master, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-master-hadoop4.out
[hadoop@hadoop1 conf]$
觀看啟動日誌可以看到:
(1)首先在命令執行節點啟動 master
(2)然後分別在 hadoop02,hadoop03,hadoop04,hadoop05 啟動 regionserver
(3)然後在 backup-masters 文件中配置的備節點上再啟動一個 master 主進程
驗證啟動是否正常
1、檢查各進程是否啟動正常
主節點和備用節點都啟動 hmaster 進程
各從節點都啟動 hregionserver 進程
按照對應的配置信息各個節點應該要啟動的進程如上圖所示
2、通過訪問瀏覽器頁面
hadoop1
hadop4
從圖中可以看出hadoop4是備用節點
3、驗證高可用
幹掉hadoop1上的hbase進程,觀察備用節點是否啟用
[hadoop@hadoop1 conf]$ jps
4960 HMaster
2960 QuorumPeerMain
3169 NameNode
3699 DFSZKFailoverController
3285 DataNode
5098 HRegionServer
5471 Jps
3487 JournalNode
[hadoop@hadoop1 conf]$ kill -9 4960
hadoop1界面訪問不了
hadoop4變成主節點
4、如果有節點相應的進程沒有啟動,那麽可以手動啟動
啟動HMaster進程
[hadoop@hadoop3 conf]$ jps
3360 Jps
2833 JournalNode
2633 QuorumPeerMain
3179 HRegionServer
2732 DataNode
[hadoop@hadoop3 conf]$ hbase-daemon.sh start master
starting master, logging to /home/hadoop/apps/hbase-1.2.6/logs/hbase-hadoop-master-hadoop3.out
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option PermSize=128m; support was removed in 8.0
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=128m; support was removed in 8.0
[hadoop@hadoop3 conf]$ jps
2833 JournalNode
3510 Jps
3432 HMaster
2633 QuorumPeerMain
3179 HRegionServer
2732 DataNode
[hadoop@hadoop3 conf]$
啟動HRegionServer進程
[hadoop@hadoop3 conf]$ hbase-daemon.sh start regionserver
HBase學習之路 (二)HBase集群安裝