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第 141 章 Hadoop

目錄

141.1. 單機安裝(CentOS 7 + Server JRE 1.8 + Hadoop-2.8.0)
141.1.1. 安裝 Java 環境
141.1.2. 安裝 Hadoop
141.1.3. 啟動 Hadoop
141.1.4. 啟動與停止 hadoop
141.2. 分散式模式
141.3. 單機安裝 CentOS 5 + hadoop-0.20.0
141.4. 分散式安裝(CentOS 6 + hadoop-1.1.2)
141.4.1. 準備工作
141.4.2. NameNode 配置名稱節點
141.4.3. DataNode 配置數據節點
141.4.4. Hadoop UI (WEB界面)
141.4.5. 測試Hadoop
141.5. Hadoop - HDFS
141.5.1. 創建目錄
141.5.2. 檔案列表
141.5.3. 顯示檔案
141.5.4. 上傳檔案
141.5.5. 下載檔案
141.5.6. 用戶權限
141.5.7. 訪問權限
141.6. Web UI - Browse Hadoop Services
141.6.1. Cluster and Apps Information (ResourceManager)
141.6.2. NodeManager Information
141.6.3. Hadoop Overview of NameNode service
141.6.4. Hadoop file system browsing (Directory Browse)
141.7. FAQ
141.7.1. hadoop-1.1.2-1.x86_64.rpm 包含哪些檔案內容
141.7.2. 啟動 Hadoop 後 9000 連接埠不存在

http://hadoop.apache.org/

141.1. 單機安裝(CentOS 7 + Server JRE 1.8 + Hadoop-2.8.0)

本章節介紹 CentOS 7 下安裝Hadoop最新版本2.8.0。

創建一個 hadoop 用戶,這個用戶將用於hadoop的啟動與管理

[root@localhost ~]# adduser hadoop
[root@localhost ~]# passwd hadoop
Changing password for user hadoop.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
		

創建HFDS存儲目錄,建議使用 btrfs 子卷功能,創建子卷然後掛載到 /opt/hadoop

[root@localhost ~]# mkdir -p /opt/hadoop/volume/{namenode,datanode}
[root@localhost ~]# chown -R hadoop:hadoop /opt/hadoop/
		

創建SSH秘鑰

		
[root@localhost ~]# su - hadoop
Last login: Wed Jun 28 20:53:16 EDT 2017 on pts/0
Last failed login: Wed Jun 28 20:58:20 EDT 2017 from localhost on ssh:notty
There were 10 failed login attempts since the last successful login.

[hadoop@localhost ~]$ ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hadoop/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/hadoop/.ssh/id_rsa.
Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
The key fingerprint is:
87:d5:6f:4f:b5:ac:d0:35:76:77:6e:5e:98:ae:92:2a hadoop@localhost.localdomain
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|           .     |
|          . .  +=|
|         o  ..++B|
|        S .. .=o=|
|         .  .o.=.|
|           . .. o|
|      E   o  .   |
|       ... ..    |
+-----------------+

[hadoop@localhost ~]$ ssh-copy-id hadoop@localhost
/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
hadoop@localhost's password: 

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'hadoop@localhost'"
and check to make sure that only the key(s) you wanted were added.
		
		

141.1.1. 安裝 Java 環境

這裡你可以選擇使用 OpenJDK 或者 Oracle 的 Server JRE

[root@localhost ~]# yum install -y java-1.8.0-openjdk			
			

JAVA環境變數配置

			
[root@localhost ~]# cat >> /etc/profile.d/java.sh <<EOF
################################################
### Java environment by neo<netkiller@msn.com>
################################################
export JAVA_HOME=/usr/java/default
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar
export JAVA_OPTS="-Xms2048m -Xmx4096m"
EOF
			
			

如果你使用的是Oracle Java 請到Oracle網站下載的Server JRE 並配置 java classpath

			
# wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/server-jre-8u131-linux-x64.tar.gz
如果你的伺服器上沒有安裝 wget 還可以使用 curl 命令下載
# curl -LO -H "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/server-jre-8u131-linux-x64.tar.gz?AuthParam=1498632436_9d59c44e2a4f0ca5bd359423ac5b790b
			
			

如果你不需要編譯,僅僅用於伺服器環境,那麼無需下載JDK,Server JRE就可以了

141.1.2. 安裝 Hadoop

[root@localhost ~]# cd /usr/local/src
[root@localhost src]# wget http://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/hadoop-2.8.0/hadoop-2.8.0.tar.gz
[root@localhost src]# tar zxf hadoop-2.8.0.tar.gz
[root@localhost src]# mv hadoop-2.8.0 /srv/
[root@localhost src]# ln -s /srv/apache-hadoop-2.8.0 /srv/apache-hadoop
[root@localhost src]# chown -R hadoop:hadoop /srv/apache-hadoop*
[root@localhost src]# su - hadoop
[hadoop@localhost hadoop]$ cd /srv/apache-hadoop
			

預設 Hadoop 使用 JAVA_HOME 設置,如果你想使用的JRE來運行Hadoop可以配置

			
[hadoop@localhost hadoop]$ cp /srv/apache-hadoop/etc/hadoop/hadoop-env.sh{,.original}
[hadoop@localhost hadoop]$ sed -i "25s:\${JAVA_HOME}:/srv/java:" hadoop-env.sh
			
			

編輯 etc/hadoop/core-site.xml 配置檔案,配置HDFS地址

			
[hadoop@localhost hadoop]$ cp /srv/apache-hadoop/etc/hadoop/core-site.xml{,.original}
			
[hadoop@localhost hadoop]$ cat > /srv/apache-hadoop/etc/hadoop/core-site.xml <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
	<property>
		<name>fs.defaultFS</name>
		<value>hdfs://localhost:9000/</value>
	</property>	
</configuration>
EOF
			
			

編輯 /srv/apache-hadoop/etc/hadoop/hdfs-site.xml 配置檔案,配置HDFS卷目錄

			
[hadoop@localhost hadoop]$ cp /srv/apache-hadoop/etc/hadoop/hdfs-site.xml{,.original}

[hadoop@localhost hadoop]$ cat > /srv/apache-hadoop/etc/hadoop/hdfs-site.xml <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
	<property>
		<name>dfs.data.dir</name>
		<value>file:///opt/hadoop/volume/datanode</value>
	</property>
	<property>
		<name>dfs.name.dir</name>
		<value>file:///opt/hadoop/volume/namenode</value>
	</property>
</configuration>
EOF
			
			

編輯 /srv/apache-hadoop/etc/hadoop/mapred-site.xml 配置檔案

			
[hadoop@localhost hadoop]$ cp /srv/apache-hadoop/etc/hadoop/mapred-site.xml{,.original}

[hadoop@localhost hadoop]$ cat > /srv/apache-hadoop/etc/hadoop/mapred-site.xml <<"EOF"
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
	<property>
		<name>mapreduce.framework.name</name>
		<value>yarn</value>
	</property>
</configuration>
EOF
			
			

編輯 /srv/apache-hadoop/etc/hadoop/yarn-site.xml 配置檔案

			
[hadoop@localhost hadoop]$ cp /srv/apache-hadoop/etc/hadoop/yarn-site.xml{,.original}

[hadoop@localhost hadoop]$ cat > /srv/apache-hadoop/etc/hadoop/yarn-site.xml <<"EOF"
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
	<property>
		<name>yarn.nodemanager.aux-services</name>
		<value>mapreduce_shuffle</value>
	</property>
</configuration>
EOF
			
			

單機配置不需要不需要處理slaves保持預設即可

			
[hadoop@localhost hadoop]$ cat /srv/apache-hadoop/etc/hadoop/slaves 
localhost
			
			

至此 Hadoop 配置已經完成

141.1.3. 啟動 Hadoop

初始化 HDFS

			
[hadoop@localhost hadoop]$ bin/hdfs namenode -format
17/06/28 06:16:58 INFO namenode.NameNode: STARTUP_MSG: 
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG:   user = hadoop
STARTUP_MSG:   host = localhost/127.0.0.1
STARTUP_MSG:   args = [-format]
STARTUP_MSG:   version = 2.8.0
STARTUP_MSG:   classpath = /srv/apache-hadoop-2.8.0/etc/hadoop:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/activation-1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/apacheds-i18n-2.0.0-M15.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/api-asn1-api-1.0.0-M20.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/api-util-1.0.0-M20.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/asm-3.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/avro-1.7.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-cli-1.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-codec-1.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-collections-3.2.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-compress-1.4.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-configuration-1.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-digester-1.8.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-io-2.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-lang-2.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-logging-1.1.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-math3-3.1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/commons-net-3.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/curator-client-2.7.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/curator-framework-2.7.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/curator-recipes-2.7.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/gson-2.2.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/guava-11.0.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/hadoop-annotations-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/hadoop-auth-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/hamcrest-core-1.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/htrace-core4-4.0.1-incubating.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/httpclient-4.5.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/httpcore-4.4.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/java-xmlbuilder-0.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jcip-annotations-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jersey-core-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jersey-json-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jersey-server-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jets3t-0.9.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jettison-1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jetty-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jetty-sslengine-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jetty-util-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jsch-0.1.51.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/json-smart-1.1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jsp-api-2.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/jsr305-3.0.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/junit-4.11.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/log4j-1.2.17.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/mockito-all-1.8.5.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/netty-3.6.2.Final.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/nimbus-jose-jwt-3.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/paranamer-2.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/servlet-api-2.5.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/slf4j-api-1.7.10.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/stax-api-1.0-2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/xmlenc-0.52.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/xz-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/lib/zookeeper-3.4.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/hadoop-common-2.8.0-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/hadoop-common-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/common/hadoop-nfs-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/asm-3.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-io-2.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-lang-2.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/guava-11.0.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/hadoop-hdfs-client-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/htrace-core4-4.0.1-incubating.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/netty-all-4.0.23.Final.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/okhttp-2.4.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/okio-1.4.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/xercesImpl-2.9.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/xml-apis-1.3.04.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-2.8.0-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-client-2.8.0-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-client-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-native-client-2.8.0-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-native-client-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-nfs-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/activation-1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/aopalliance-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/asm-3.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-cli-1.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-codec-1.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-collections-3.2.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-io-2.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-lang-2.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-logging-1.1.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/commons-math-2.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/curator-client-2.7.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/curator-test-2.7.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/fst-2.24.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/guava-11.0.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/guice-3.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jackson-jaxrs-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jackson-mapper-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jackson-xc-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/javassist-3.18.1-GA.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/javax.inject-1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jaxb-api-2.2.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jaxb-impl-2.2.3-1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jersey-client-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jersey-core-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jersey-json-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jersey-server-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jettison-1.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jetty-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jetty-util-6.1.26.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/jsr305-3.0.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/leveldbjni-all-1.8.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/log4j-1.2.17.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/objenesis-2.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/servlet-api-2.5.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/stax-api-1.0-2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/xz-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/zookeeper-3.4.6-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/lib/zookeeper-3.4.6.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-api-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-client-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-common-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-registry-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-common-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-tests-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-timeline-pluginstorage-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/asm-3.2.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/commons-io-2.4.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/guice-3.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/hadoop-annotations-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.9.13.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/javax.inject-1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/junit-4.11.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/leveldbjni-all-1.8.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/lib/xz-1.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.8.0-tests.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.8.0.jar:/srv/apache-hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.8.0.jar:/contrib/capacity-scheduler/*.jar
STARTUP_MSG:   build = https://git-wip-us.apache.org/repos/asf/hadoop.git -r 91f2b7a13d1e97be65db92ddabc627cc29ac0009; compiled by 'jdu' on 2017-03-17T04:12Z
STARTUP_MSG:   java = 1.8.0_131
************************************************************/
17/06/28 06:16:58 INFO namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
17/06/28 06:16:58 INFO namenode.NameNode: createNameNode [-format]
Formatting using clusterid: CID-1c208cbf-7b56-41d5-9736-4e9a1f02aadb
17/06/28 06:16:58 INFO namenode.FSEditLog: Edit logging is async:false
17/06/28 06:16:58 INFO namenode.FSNamesystem: KeyProvider: null
17/06/28 06:16:58 INFO namenode.FSNamesystem: fsLock is fair: true
17/06/28 06:16:58 INFO namenode.FSNamesystem: Detailed lock hold time metrics enabled: false
17/06/28 06:16:58 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000
17/06/28 06:16:58 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true
17/06/28 06:16:58 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000
17/06/28 06:16:58 INFO blockmanagement.BlockManager: The block deletion will start around 2017 Jun 28 06:16:58
17/06/28 06:16:58 INFO util.GSet: Computing capacity for map BlocksMap
17/06/28 06:16:58 INFO util.GSet: VM type       = 64-bit
17/06/28 06:16:58 INFO util.GSet: 2.0% max memory 889 MB = 17.8 MB
17/06/28 06:16:58 INFO util.GSet: capacity      = 2^21 = 2097152 entries
17/06/28 06:16:58 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false
17/06/28 06:16:58 INFO blockmanagement.BlockManager: defaultReplication         = 3
17/06/28 06:16:58 INFO blockmanagement.BlockManager: maxReplication             = 512
17/06/28 06:16:58 INFO blockmanagement.BlockManager: minReplication             = 1
17/06/28 06:16:58 INFO blockmanagement.BlockManager: maxReplicationStreams      = 2
17/06/28 06:16:58 INFO blockmanagement.BlockManager: replicationRecheckInterval = 3000
17/06/28 06:16:58 INFO blockmanagement.BlockManager: encryptDataTransfer        = false
17/06/28 06:16:58 INFO blockmanagement.BlockManager: maxNumBlocksToLog          = 1000
17/06/28 06:16:58 INFO namenode.FSNamesystem: fsOwner             = hadoop (auth:SIMPLE)
17/06/28 06:16:58 INFO namenode.FSNamesystem: supergroup          = supergroup
17/06/28 06:16:58 INFO namenode.FSNamesystem: isPermissionEnabled = true
17/06/28 06:16:58 INFO namenode.FSNamesystem: HA Enabled: false
17/06/28 06:16:58 INFO namenode.FSNamesystem: Append Enabled: true
17/06/28 06:16:59 INFO util.GSet: Computing capacity for map INodeMap
17/06/28 06:16:59 INFO util.GSet: VM type       = 64-bit
17/06/28 06:16:59 INFO util.GSet: 1.0% max memory 889 MB = 8.9 MB
17/06/28 06:16:59 INFO util.GSet: capacity      = 2^20 = 1048576 entries
17/06/28 06:16:59 INFO namenode.FSDirectory: ACLs enabled? false
17/06/28 06:16:59 INFO namenode.FSDirectory: XAttrs enabled? true
17/06/28 06:16:59 INFO namenode.NameNode: Caching file names occurring more than 10 times
17/06/28 06:16:59 INFO util.GSet: Computing capacity for map cachedBlocks
17/06/28 06:16:59 INFO util.GSet: VM type       = 64-bit
17/06/28 06:16:59 INFO util.GSet: 0.25% max memory 889 MB = 2.2 MB
17/06/28 06:16:59 INFO util.GSet: capacity      = 2^18 = 262144 entries
17/06/28 06:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
17/06/28 06:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
17/06/28 06:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension     = 30000
17/06/28 06:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10
17/06/28 06:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10
17/06/28 06:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25
17/06/28 06:16:59 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
17/06/28 06:16:59 INFO namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
17/06/28 06:16:59 INFO util.GSet: Computing capacity for map NameNodeRetryCache
17/06/28 06:16:59 INFO util.GSet: VM type       = 64-bit
17/06/28 06:16:59 INFO util.GSet: 0.029999999329447746% max memory 889 MB = 273.1 KB
17/06/28 06:16:59 INFO util.GSet: capacity      = 2^15 = 32768 entries
17/06/28 06:16:59 INFO namenode.FSImage: Allocated new BlockPoolId: BP-577822066-127.0.0.1-1498645019088
17/06/28 06:16:59 INFO common.Storage: Storage directory /opt/hadoop/volume/namenode has been successfully formatted.
17/06/28 06:16:59 INFO namenode.FSImageFormatProtobuf: Saving image file /opt/hadoop/volume/namenode/current/fsimage.ckpt_0000000000000000000 using no compression
17/06/28 06:16:59 INFO namenode.FSImageFormatProtobuf: Image file /opt/hadoop/volume/namenode/current/fsimage.ckpt_0000000000000000000 of size 323 bytes saved in 0 seconds.
17/06/28 06:16:59 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
17/06/28 06:16:59 INFO util.ExitUtil: Exiting with status 0
17/06/28 06:16:59 INFO namenode.NameNode: SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1
************************************************************/
			
			

如果一切正常,運行完畢後可以看到初始化創建的目錄

			
[hadoop@localhost hadoop]$ find /opt/hadoop/volume/
/opt/hadoop/volume/
/opt/hadoop/volume/namenode
/opt/hadoop/volume/namenode/current
/opt/hadoop/volume/namenode/current/VERSION
/opt/hadoop/volume/namenode/current/seen_txid
/opt/hadoop/volume/namenode/current/fsimage_0000000000000000000.md5
/opt/hadoop/volume/namenode/current/fsimage_0000000000000000000
/opt/hadoop/volume/datanode
			
			

141.1.4. 啟動與停止 hadoop

啟動與停止 hadoop


啟動/關閉所有服務 start-all.sh/stop-all.sh

你也可以根據自己的需要手工啟動

啟動/關閉HDFS: start-dfs.sh/stop-dfs.sh

			
[hadoop@localhost ~]$ /srv/apache-hadoop/sbin/start-dfs.sh 
Starting namenodes on [localhost]
localhost: starting namenode, logging to /srv/apache-hadoop-2.8.0/logs/hadoop-hadoop-namenode-localhost.localdomain.out
localhost: starting datanode, logging to /srv/apache-hadoop-2.8.0/logs/hadoop-hadoop-datanode-localhost.localdomain.out
Starting secondary namenodes [0.0.0.0]
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
ECDSA key fingerprint is f4:b8:65:48:55:4f:a5:a7:0f:16:ad:66:ef:98:f3:1f.
Are you sure you want to continue connecting (yes/no)? yes
0.0.0.0: Warning: Permanently added '0.0.0.0' (ECDSA) to the list of known hosts.
0.0.0.0: starting secondarynamenode, logging to /srv/apache-hadoop-2.8.0/logs/hadoop-hadoop-secondarynamenode-localhost.localdomain.out
			
			

啟動/關閉 yarn: start-yarn.sh/stop-yarn.sh

			
[hadoop@localhost ~]$ /srv/apache-hadoop/sbin/start-yarn.sh 
starting yarn daemons
starting resourcemanager, logging to /srv/apache-hadoop-2.8.0/logs/yarn-hadoop-resourcemanager-localhost.localdomain.out
localhost: starting nodemanager, logging to /srv/apache-hadoop-2.8.0/logs/yarn-hadoop-nodemanager-localhost.localdomain.out
			
			

檢查 Hadoop 綫程

			
[hadoop@localhost ~]$ jps
25294 NodeManager
25189 ResourceManager
24770 DataNode
25665 Jps
24942 SecondaryNameNode
24634 NameNode
			
			

檢查連接埠


[hadoop@localhost ~]$ ss -lnt | egrep "(9000|50070|8088|8042)"
LISTEN     0      128    127.0.0.1:9000                     *:*                  
LISTEN     0      128          *:50070                    *:*                  
LISTEN     0      128         :::8042                    :::*                  
LISTEN     0      128         :::8088                    :::*