澶ф暟鎹箣hadoop

Posted 2021-01-03

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浜屻€丠adoop
hadoop鏄竴绉嶅垎鏋愬拰澶勭悊娴烽噺鏁版嵁鐨勮蒋浠跺钩鍙帮紝鏄竴娆惧紑婧愯蒋浠讹紝浣跨敤Java寮€鍙戯紝鍙互鎻愪緵涓€涓垎甯冨紡鍩虹鏋舵瀯

hadoop鐗圭偣锛氶珮鍙潬鎬с€侀珮鎵╁睍鎬с€侀珮鏁堟€с€侀珮瀹归敊鎬с€佷綆鎴愭湰

hadoop甯哥敤缁勪欢锛?br/>-HDFS(Hadoop鍒嗗竷寮忔枃浠剁郴缁?
-Mapreduce(鍒嗗竷寮忚绠楁鏋?
-Zookeeper(鍒嗗竷寮忓崗浣滄湇鍔?
-Hbase(鍒嗗竷寮忓垪瀛樻暟鎹簱)
-Hive(鍩轰簬Hadoop鐨勬暟鎹粨搴?
-Sqoop(鏁版嵁鍚屾宸ュ叿)
-Pig(鍩轰簬Hadoop鐨勬暟鎹祦绯荤粺)
-Mahout(鏁版嵁鎸栨帢绠楁硶搴?
-Flume(鏃ュ織鏀堕泦宸ュ叿)

hadoop鏍稿績缁勪欢锛?br/>-HDFS锛氬垎甯冨紡鏂囦欢绯荤粺
-Yarn:闆嗙兢璧勬簮绠＄悊绯荤粺
-MapReduce:鍒嗗竷寮忚绠楁鏋?/p>

HDFS瑙掕壊鍙婃蹇?br/>-NameNode锛歁aster鑺傜偣,绠＄悊HDFS鐨勫悕绉扮┖闂村拰鏁版嵁鍧楁槧灏勪俊鎭?閰嶇疆鍓湰绛栫暐,澶勭悊鎵€鏈夊鎴风璇锋眰銆?br/>-Secondary NameNode锛氬畾鏈熷悎骞?fsimage 鍜宖sedits,鎺ㄩ€佺粰NameNode锛岀揣鎬ユ儏鍐典笅,鍙緟鍔╂仮澶峃ameNode
-DataNode:鏁版嵁瀛樺偍鑺傜偣,瀛樺偍瀹為檯鐨勬暟鎹?姹囨姤瀛樺偍淇℃伅缁橬ameNode銆?br/>-Client:鍒囧垎鏂囦欢,璁块棶HDFS,涓嶯ameNode浜や簰,鑾峰彇鏂囦欢浣嶇疆淇℃伅锛屼笌DataNode浜や簰,璇诲彇鍜屽啓鍏ユ暟鎹€?/p>

Hadoop鐨勯儴缃叉ā寮忔湁涓夌锛?br/>-鍗曟満
-浼垎甯冨紡锛堟墍鏈夎鑹茶涓€鍙版満鍣ㄤ笂锛?br/>-瀹屽叏鍒嗗竷寮忥紙涓嶅悓瑙掕壊瑁呬笉鍚屾満鍣級

涓夈€佸崟鏈烘ā寮忥細
1.鑾峰彇杞欢
http://hadoop.apache.org
涓嬭浇锛歨adoop-2.7.6.tar.gz
瑙ｅ帇锛歵ar -xf hadoop-2.7.6.tar.gz
瀹夎锛歮v hadoop-2.7.6

2.瀹夎java鐜锛宩ps宸ュ叿
yum -y install java-1.8.0-openjdk
yum -y install java-1.8.0-openjdk-devel

3.璁剧疆鐜鍙橀噺
vim /usr/local/hadoop/etc/hadoop/hadoop-env.sh
export JAVA_HOME="/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64/jre"
export HADOOP_CONF_DIR="/usr/local/hadoop/etc/hadoop"

鍒嗘瀽鍗曡瘝鍑虹幇鐨勬鏁?br/>./bin/hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.6.jar wordcount oo xx

鍥涖€佸畬鍏ㄥ垎甯冨紡锛?br/>-鍒嗗竷寮忔枃浠剁郴缁燂細鏄寚鏂囦欢绯荤粺绠＄悊鐨勭墿鐞嗗瓨鍌ㄨ祫婧愪笉涓€瀹氱洿鎺ヨ繛鎺ュ湪鏈湴鑺傜偣涓?鑰屾槸閫氳繃璁＄畻鏈虹綉缁滆妭鐐圭浉杩烇紝鍒嗗竷寮忔枃浠剁郴缁熺殑璁捐鍩轰簬瀹㈡埛鏈?鏈嶅姟鍣ㄦā寮忥紱鍒嗗竷寮忔枃浠剁郴缁熷彲浠ユ湁鏁堣В鍐虫暟鎹殑瀛樺偍鍜岀鐞嗛毦棰橈紝灏嗗浐瀹氫簬鏌愪釜鍦扮偣鐨勬煇涓枃浠剁郴缁燂紝鎵╁睍鍒颁换鎰忓涓湴鐐?澶氫釜鏂囦欢绯荤粺锛屼紬澶氱殑鑺傜偣缁勬垚涓€涓枃浠剁郴缁熺綉缁滐紝姣忎釜鑺傜偣鍙互鍒嗗竷鍦ㄤ笉鍚岀殑鍦扮偣锛岄€氳繃缃戠粶杩涜鑺傜偣闂寸殑閫氫俊鍜屾暟鎹紶杈撱€?/p>

闆嗙兢缁勫缓鏉′欢:

• ALL: 鑳界浉浜?ping 閫?(閰嶇疆 /etc/hosts)
• ALL: 瀹夎 java-1.8.0-openjdk-devel
• NN1: 鑳?ssh 鍏嶅瘑鐧诲綍鎵€鏈夐泦缇や富鏈猴紝鍖呮嫭鑷繁(涓嶈兘鎻愮ず杈撳叆 yes)
  ssh 鍏嶅瘑鐧诲綍锛氶儴缃?sshkey
  涓嶈緭鍏?yes锛氫慨鏀?/etc/ssh/ssh_config
  60琛屾坊鍔? StrictHostKeyChecking no

閰嶇疆鏂囦欢鏍煎紡
<property>
<name></name>
<value></value>
<description></description>
</property>

閰嶇疆鏂囦欢鍙傝€冪綉鍧€http://hadoop.apache.org
cd /usr/local/hadoop/etc/hadoop

1.閰嶇疆鐜鍙橀噺鏂囦欢hadoop-env.sh锛堝弬瑙佷笁銆?锛?br/>2.鏍稿績閰嶇疆鏂囦欢core-site.xml
vim core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs:///nn01:9000</value>
<description></description>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/var/hadoop</value>
<description></description>
</property>
</configuration>
鍦ㄦ墍鏈変富鏈轰笂鍒涘缓/var/hadoop

2.瀹屽叏鍒嗗竷寮忛厤缃甴dfs-site.xml
vim hdfs-site.xml
<configuration>
<property>
<name>dfs.datanode.http-address</name>
<value>nn01:50070</value>
<description></description>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>nn01:50090</value>
<description></description>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
<description></description>
</property>
</configuration>

3.閰嶇疆slaves
vim slaves
node01
node02
node03

4.鍚屾閰嶇疆鍒版墍鏈変富鏈?

5.鏍煎紡鍖?namenode (nn01涓婃搷浣?
./bin/hdfs namenode -format

6.鍚姩闆嗙兢 锛坣n01涓婃搷浣滐級
./sbin/start-dfs.sh
鍋滄闆嗙兢鍙互浣跨敤 ./sbin/stop-dfs.sh

7.楠岃瘉瑙掕壊 jps 锛堟墍鏈変富鏈烘搷浣滐級

8.楠岃瘉闆嗙兢鏄惁缁勫缓鎴愬姛 锛坣n01涓婃搷浣滐級
./bin/hdfs dfsadmin -report

鏈嶅姟鍚姩鏃ュ織璺緞 /usr/local/hadoop/logs