CentOS 7.3 + Server JRE 1.8 + Hadoop-2.8.0
This article is an excerpt from the "Netkiller Linux Handbook". Due to my work, I haven't used hadoop in recent years. I checked the version today and it has reached 2.8, which is still very different from the version used a few years ago. So I wanted to update the document, by the way, review the past and learn the new.
137.1. Single machine installation (CentOS 7 + Server JRE 1.8 + Hadoop-2.8.0)
This chapter introduces the installation of the latest version of Hadoop 2.8.0 under CentOS 7.
Create a hadoop user, this user will be used to start and manage hadoop
[ root@localhost ~]# adduser hadoop
[ root@localhost ~]# passwd hadoop
Changing password for user hadoop.
New password:
Retype newpassword:
passwd: all authentication tokens updated successfully.
To create a HFDS storage directory, it is recommended to use the btrfs subvolume function, create a subvolume and then mount it to /opt/hadoop
[ root@localhost ~]# mkdir -p /opt/hadoop/volume/{namenode,datanode}[root@localhost ~]# chown -R hadoop:hadoop /opt/hadoop/
Create SSH key
[ root@localhost ~]# su - hadoop
Last login: Wed Jun 2820:53:16 EDT 2017 on pts/0
Last failed login: Wed Jun 2820:58:20 EDT 2017from 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 [email protected]
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 inwith the newkey(s), to filter out any that are already installed
/bin/ssh-copy-id: INFO:1key(s) remain to be installed --if you are prompted now it is to install the newkeys
hadoop@localhost's password:
Number ofkey(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.
137.1.1. Install Java environment###
Here you can choose to use OpenJDK or Oracle's Server JRE
[ root@localhost ~]# yum install -y java-1.8.0-openjdk
JAVA environment variable configuration
[ root@localhost ~]# cat >>/etc/profile.d/java.sh <<EOF
################################################
### Java environment by neo<[email protected]>
################################################
export JAVA_HOME=/usr/java/defaultexport PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/jre/lib:$JAVA_HOME/lib:$JAVA_HOME/lib/tools.jar
export JAVA_OPTS="-Xms2048m -Xmx4096m"
EOF
If you are using Oracle Java, please go to the Server JRE downloaded from the Oracle website and configure the java classpath
# wget --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/server-jre-8u131-linux-x64.tar.gz
If wget is not installed on your server, you can also use the curl command to download
# curl -LO -H "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u131-b11/d54c1d3a095b4ff2b6607d096fa80163/server-jre-8u131-linux-x64.tar.gz?AuthParam=1498632436_9d59c44e2a4f0ca5bd359423ac5b790b
If you don’t need to compile and only use it in a server environment, then you don’t need to download JDK, Server JRE will do.
137.1.2. Install Hadoop
[ root@localhost ~]# cd /usr/local/src
[ root@localhost src]# wget http://mirrors.tuna.tsinghua.edu.cn/apache/hadoop/common/hadoop-2.8.0/hadoop-2.8.0.tar.gz
[ root@localhost src]# tar zxf hadoop-2.8.0.tar.gz
[ root@localhost src]# mv hadoop-2.8.0/srv/[root@localhost src]# ln -s /srv/hadoop-2.8.0/srv/hadoop
[ root@localhost src]# chown -R hadoop:hadoop /srv/hadoop*[root@localhost src]# su - hadoop
[ hadoop@localhost hadoop]$ cd /srv/hadoop
By default, Hadoop uses JAVA_HOME setting, if you want to use JRE to run Hadoop, you can configure
[ hadoop@localhost hadoop]$ cp /srv/hadoop/etc/hadoop/hadoop-env.sh{,.original}[hadoop@localhost hadoop]$ sed -i "25s:\${JAVA_HOME}:/srv/java:" hadoop-env.sh
Edit the etc/hadoop/core-site.xml configuration file and configure the HDFS address
[ hadoop@localhost hadoop]$ cp /srv/hadoop/etc/hadoop/core-site.xml{,.original}[hadoop@localhost hadoop]$ cat >/srv/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
Edit the /srv/hadoop/etc/hadoop/hdfs-site.xml configuration file to configure the HDFS volume directory
[ hadoop@localhost hadoop]$ cp /srv/hadoop/etc/hadoop/hdfs-site.xml{,.original}[hadoop@localhost hadoop]$ cat >/srv/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
Edit /srv/hadoop/etc/hadoop/mapred-site.xml configuration file
[ hadoop@localhost hadoop]$ cp /srv/hadoop/etc/hadoop/mapred-site.xml{,.original}[hadoop@localhost hadoop]$ cat >/srv/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
Edit the /srv/hadoop/etc/hadoop/yarn-site.xml configuration file
[ hadoop@localhost hadoop]$ cp /srv/hadoop/etc/hadoop/yarn-site.xml{,.original}[hadoop@localhost hadoop]$ cat >/srv/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
Stand-alone configuration does not need to process slaves and keep the default
[ hadoop@localhost hadoop]$ cat /srv/hadoop/etc/hadoop/slaves
localhost
So far the Hadoop configuration has been completed
137.1.3. Start Hadoop
Initialize HDFS
[ hadoop@localhost hadoop]$ bin/hdfs namenode -format
17 /06/2806:16:58 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/hadoop-2.8.0/etc/hadoop:/srv/hadoop-2.8.0/share/hadoop/common/lib/activation-1.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/apacheds-i18n-2.0.0-M15.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/apacheds-kerberos-codec-2.0.0-M15.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/api-asn1-api-1.0.0-M20.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/api-util-1.0.0-M20.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/asm-3.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/avro-1.7.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-beanutils-1.7.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-beanutils-core-1.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-cli-1.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-codec-1.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-collections-3.2.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-compress-1.4.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-configuration-1.6.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-digester-1.8.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-io-2.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-lang-2.6.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-logging-1.1.3.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-math3-3.1.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/commons-net-3.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/curator-client-2.7.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/curator-framework-2.7.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/curator-recipes-2.7.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/gson-2.2.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/guava-11.0.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/hadoop-annotations-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/hadoop-auth-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/hamcrest-core-1.3.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/htrace-core4-4.0.1-incubating.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/httpclient-4.5.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/httpcore-4.4.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jackson-core-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jackson-jaxrs-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jackson-mapper-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jackson-xc-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/java-xmlbuilder-0.4.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jaxb-api-2.2.2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jaxb-impl-2.2.3-1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jcip-annotations-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jersey-core-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jersey-json-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jersey-server-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jets3t-0.9.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jettison-1.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jetty-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jetty-sslengine-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jetty-util-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jsch-0.1.51.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/json-smart-1.1.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jsp-api-2.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/jsr305-3.0.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/junit-4.11.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/log4j-1.2.17.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/mockito-all-1.8.5.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/netty-3.6.2.Final.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/nimbus-jose-jwt-3.9.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/paranamer-2.3.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/protobuf-java-2.5.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/servlet-api-2.5.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/slf4j-api-1.7.10.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/snappy-java-1.0.4.1.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/stax-api-1.0-2.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/xmlenc-0.52.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/xz-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/lib/zookeeper-3.4.6.jar:/srv/hadoop-2.8.0/share/hadoop/common/hadoop-common-2.8.0-tests.jar:/srv/hadoop-2.8.0/share/hadoop/common/hadoop-common-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/common/hadoop-nfs-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/asm-3.2.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-cli-1.2.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-codec-1.4.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-daemon-1.0.13.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-io-2.4.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-lang-2.6.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/commons-logging-1.1.3.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/guava-11.0.2.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/hadoop-hdfs-client-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/htrace-core4-4.0.1-incubating.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jackson-core-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jackson-mapper-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jersey-core-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jersey-server-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jetty-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jetty-util-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/jsr305-3.0.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/leveldbjni-all-1.8.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/log4j-1.2.17.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/netty-3.6.2.Final.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/netty-all-4.0.23.Final.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/okhttp-2.4.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/okio-1.4.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/protobuf-java-2.5.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/servlet-api-2.5.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/xercesImpl-2.9.1.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/xml-apis-1.3.04.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/lib/xmlenc-0.52.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-2.8.0-tests.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-client-2.8.0-tests.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-client-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-native-client-2.8.0-tests.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-native-client-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/hdfs/hadoop-hdfs-nfs-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/activation-1.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/aopalliance-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/asm-3.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-cli-1.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-codec-1.4.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-collections-3.2.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-compress-1.4.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-io-2.4.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-lang-2.6.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-logging-1.1.3.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/commons-math-2.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/curator-client-2.7.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/curator-test-2.7.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/fst-2.24.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/guava-11.0.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/guice-3.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/guice-servlet-3.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jackson-core-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jackson-jaxrs-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jackson-mapper-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jackson-xc-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/javassist-3.18.1-GA.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/javax.inject-1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jaxb-api-2.2.2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jaxb-impl-2.2.3-1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jersey-client-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jersey-core-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jersey-guice-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jersey-json-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jersey-server-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jettison-1.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jetty-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jetty-util-6.1.26.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/jsr305-3.0.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/leveldbjni-all-1.8.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/log4j-1.2.17.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/netty-3.6.2.Final.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/objenesis-2.1.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/protobuf-java-2.5.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/servlet-api-2.5.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/stax-api-1.0-2.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/xz-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/zookeeper-3.4.6-tests.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/lib/zookeeper-3.4.6.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-api-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-applications-distributedshell-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-applications-unmanaged-am-launcher-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-client-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-common-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-registry-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-applicationhistoryservice-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-common-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-nodemanager-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-resourcemanager-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-sharedcachemanager-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-tests-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-timeline-pluginstorage-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/yarn/hadoop-yarn-server-web-proxy-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/aopalliance-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/asm-3.2.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/avro-1.7.4.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/commons-compress-1.4.1.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/commons-io-2.4.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/guice-3.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/guice-servlet-3.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/hadoop-annotations-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/hamcrest-core-1.3.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/jackson-core-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/jackson-mapper-asl-1.9.13.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/javax.inject-1.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-core-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-guice-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/jersey-server-1.9.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/junit-4.11.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/leveldbjni-all-1.8.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/log4j-1.2.17.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/netty-3.6.2.Final.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/paranamer-2.3.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/protobuf-java-2.5.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/snappy-java-1.0.4.1.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/lib/xz-1.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-app-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-common-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-hs-plugins-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.8.0-tests.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-jobclient-2.8.0.jar:/srv/hadoop-2.8.0/share/hadoop/mapreduce/hadoop-mapreduce-client-shuffle-2.8.0.jar:/srv/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
************************************************************/17/06/2806:16:58 INFO namenode.NameNode: registered UNIX signal handlers for[TERM, HUP, INT]17/06/2806:16:58 INFO namenode.NameNode: createNameNode [-format]
Formatting using clusterid: CID-1c208cbf-7b56-41d5-9736-4e9a1f02aadb
17 /06/2806:16:58 INFO namenode.FSEditLog: Edit logging is async:false17/06/2806:16:58 INFO namenode.FSNamesystem: KeyProvider:null17/06/2806:16:58 INFO namenode.FSNamesystem: fsLock is fair:true17/06/2806:16:58 INFO namenode.FSNamesystem: Detailed lock hold time metrics enabled:false17/06/2806:16:58 INFO blockmanagement.DatanodeManager: dfs.block.invalidate.limit=100017/06/2806:16:58 INFO blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true17/06/2806:16:58 INFO blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.00017/06/2806:16:58 INFO blockmanagement.BlockManager: The block deletion will start around 2017 Jun 2806:16:5817/06/2806:16:58 INFO util.GSet: Computing capacity for map BlocksMap
17 /06/2806:16:58 INFO util.GSet: VM type =64-bit
17 /06/2806:16:58 INFO util.GSet:2.0% max memory 889 MB =17.8 MB
17 /06/2806:16:58 INFO util.GSet: capacity =2^21=2097152 entries
17 /06/2806:16:58 INFO blockmanagement.BlockManager: dfs.block.access.token.enable=false17/06/2806:16:58 INFO blockmanagement.BlockManager: defaultReplication =317/06/2806:16:58 INFO blockmanagement.BlockManager: maxReplication =51217/06/2806:16:58 INFO blockmanagement.BlockManager: minReplication =117/06/2806:16:58 INFO blockmanagement.BlockManager: maxReplicationStreams =217/06/2806:16:58 INFO blockmanagement.BlockManager: replicationRecheckInterval =300017/06/2806:16:58 INFO blockmanagement.BlockManager: encryptDataTransfer =false17/06/2806:16:58 INFO blockmanagement.BlockManager: maxNumBlocksToLog =100017/06/2806:16:58 INFO namenode.FSNamesystem: fsOwner =hadoop(auth:SIMPLE)17/06/2806:16:58 INFO namenode.FSNamesystem: supergroup = supergroup
17 /06/2806:16:58 INFO namenode.FSNamesystem: isPermissionEnabled =true17/06/2806:16:58 INFO namenode.FSNamesystem: HA Enabled:false17/06/2806:16:58 INFO namenode.FSNamesystem: Append Enabled:true17/06/2806:16:59 INFO util.GSet: Computing capacity for map INodeMap
17 /06/2806:16:59 INFO util.GSet: VM type =64-bit
17 /06/2806:16:59 INFO util.GSet:1.0% max memory 889 MB =8.9 MB
17 /06/2806:16:59 INFO util.GSet: capacity =2^20=1048576 entries
17 /06/2806:16:59 INFO namenode.FSDirectory: ACLs enabled?false17/06/2806:16:59 INFO namenode.FSDirectory: XAttrs enabled?true17/06/2806:16:59 INFO namenode.NameNode: Caching file names occurring more than 10 times
17 /06/2806:16:59 INFO util.GSet: Computing capacity for map cachedBlocks
17 /06/2806:16:59 INFO util.GSet: VM type =64-bit
17 /06/2806:16:59 INFO util.GSet:0.25% max memory 889 MB =2.2 MB
17 /06/2806:16:59 INFO util.GSet: capacity =2^18=262144 entries
17 /06/2806:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct =0.999000012874603317/06/2806:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes =017/06/2806:16:59 INFO namenode.FSNamesystem: dfs.namenode.safemode.extension =3000017/06/2806:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets =1017/06/2806:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users =1017/06/2806:16:59 INFO metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes =1,5,2517/06/2806:16:59 INFO namenode.FSNamesystem: Retry cache on namenode is enabled
17 /06/2806:16:59 INFO namenode.FSNamesystem: Retry cache will use 0.03of total heap and retry cache entry expiry time is 600000 millis
17 /06/2806:16:59 INFO util.GSet: Computing capacity for map NameNodeRetryCache
17 /06/2806:16:59 INFO util.GSet: VM type =64-bit
17 /06/2806:16:59 INFO util.GSet:0.029999999329447746% max memory 889 MB =273.1 KB
17 /06/2806:16:59 INFO util.GSet: capacity =2^15=32768 entries
17 /06/2806:16:59 INFO namenode.FSImage: Allocated newBlockPoolId: BP-577822066-127.0.0.1-149864501908817/06/2806:16:59 INFO common.Storage: Storage directory /opt/hadoop/volume/namenode has been successfully formatted.17/06/2806:16:59 INFO namenode.FSImageFormatProtobuf: Saving image file /opt/hadoop/volume/namenode/current/fsimage.ckpt_0000000000000000000 using no compression
17 /06/2806:16:59 INFO namenode.FSImageFormatProtobuf: Image file /opt/hadoop/volume/namenode/current/fsimage.ckpt_0000000000000000000 of size 323 bytes saved in0 seconds.17/06/2806:16:59 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >=017/06/2806:16:59 INFO util.ExitUtil: Exiting with status 017/06/2806:16:59 INFO namenode.NameNode: SHUTDOWN_MSG:/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at localhost/127.0.0.1
************************************************************/
If everything is normal, you can see the initial created directory after running
[ 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
137.1.4. Start and stop hadoop
Start and stop hadoop
Start/stop all services start-all.sh/stop-all.sh
You can also start it manually according to your needs
Start/stop HDFS: start-dfs.sh/stop-dfs.sh
[ hadoop@localhost ~]$ /srv/hadoop/sbin/start-dfs.sh
Starting namenodes on [localhost]
localhost: starting namenode, logging to /srv/hadoop-2.8.0/logs/hadoop-hadoop-namenode-localhost.localdomain.out
localhost: starting datanode, logging to /srv/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 continueconnecting(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/hadoop-2.8.0/logs/hadoop-hadoop-secondarynamenode-localhost.localdomain.out
Start/stop yarn: start-yarn.sh/stop-yarn.sh
[ hadoop@localhost ~]$ /srv/hadoop/sbin/start-yarn.sh
starting yarn daemons
starting resourcemanager, logging to /srv/hadoop-2.8.0/logs/yarn-hadoop-resourcemanager-localhost.localdomain.out
localhost: starting nodemanager, logging to /srv/hadoop-2.8.0/logs/yarn-hadoop-nodemanager-localhost.localdomain.out
Check Hadoop threads
[ hadoop@localhost ~]$ jps
25294 NodeManager
25189 ResourceManager
24770 DataNode
25665 Jps
24942 SecondaryNameNode
24634 NameNode
Check port
[ 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 :::*
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