准备
centos 7.5 1804
3台机器 VMware操作
NAT网络 192.168.25.x
仅主机网络 192.168.50.x
3台主机的主机名：
node1.fgq.com
node2.fgq.com
node3.fgq.com
3台主机 时间同步
[root@node1 ~]# crontab -e
*/5 * * * * ntpdate time3.aliyun.com && hwclock -w
3台主机 主机名称解析
[root@node1 ~]# cat /etc/hosts
192.168.25.11 node1.fgq.com node1
192.168.25.12 node2.fgq.com node2
192.168.25.13 node3.fgq.com node3
192.168.25.14 node4.fgq.com node4
192.168.25.15 node5.fgq.com node5
3台主机 安装基础包
[root@node1 ~]# yum -y install vim lrzsz ntpdate wget net-tools lsof
[root@node1 ~]# yum -y install epel-release-latest-7.noarch.rpm
3台主机 禁用防火墙
[root@node1 ~]# systemctl stop firewalld
[root@node1 ~]# systemctl disable firewalld
3台主机 禁用selinux
[root@node1 ~]# vi /etc/selinux/config
SELINUX=disabled
[root@node1 ~]# setenforce 0
[root@node1 ~]# getenforce
无密码登录
[root@node1 ~]# ssh-keygen -t rsa -P '' 3台主机都做
[root@node1 ~]# cat /root/.ssh/id_rsa.pub 3台主机都做
[root@node1 ~]# vim /root/.ssh/authorized_keys
把3个主机的id_rsa.pub公钥复制到这个文件里面
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDObdYkfz1qSG4i5gsVGT6I7wqdD8LH3Rax1/YFm9gmsQ+w/rQ0GlKJ4W1TSZc+5vgtCLGi53k9UZpNjX6dHBjFaw4sAwZa00/UBvpIRbIRNl9bhuDYdq2uQOeYKjUTFfrXbt0TrQAJuY+B+yedpI+iot67swumUNjH51m04UAz93hfKF+O3k1aeTGzIKkSgXQ7TASYB2pttS7sDdN8Eo2muWcN59ezT2FAk/Hn9Q1Dx5h1exKqxGNHrVb7OIbt/L0c5wgyoriIZldg3xsSiJ/DXlYFZ+7YHwM/lSAKWDojtqTg6ZzcBK82m9eNW0Wo4HU+SnhZtPpUAV9SbZFqpFz/ root@node1.fgq.com
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDdA79fJ5BxHlBcrKqvTxuiFgsENW7V0ueLAcilF6/JJfLmS0ltXsBx8vuq0PYFv9fvdcfoBna+VSI2dFfJ5PqeKn8IL7sV/D8pD8mPAESL8fzLjbSFgW8K1ur7AfjtNwOebr+EL45tpSAdc44QAy/2Tria0k6MC/xjiA+dc75bYganarBUXAqagCoNSZdlbUT3WYaxhV3UoIYmx2oayB/X+VyUCZiJnr7v9y/w4IQoLvXlzJxhW7muMmZ6Ty2BbeYiENYakV7Y1vbs2u45l7gcvWadYbuSeAWjiemHbEaAeLpGLidHEWyV2JHPQhJTXs+d+zAW9HMEva08Hh6Lrs2D root@node2.fgq.com
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQClxM2idmxLyh7dqg67grMzmpv2uix51gAkIsBSI5epi8h+2+NZyVtV9UOwNWC3eOtGhyRcodUFyL/z+tb4FWOmGFZAKkZ3hYPvMzKBCYCmlgF2vXx7kUVL2y39OZuWDgKk2sMqkjogowNAMg4zR/QR8hduPS/JWvBmTq3/JDIqWj4j7GT8DTVXJBz895K4cKlkmddV7NAMRDg0nlQ80mg+8YoU+4IwHTKTux6mA+h4rmcdhDs1zQRrhh8M/SYAjaAKf1HzdAkrUMJYDHVVzfJ+cQMvsKUYk+F5OBSTHw8MmANiU+dOyHch4+WbsLi5j2OH4GQWF2dsUJxbGyZZnr3t root@node3.fgq.com
把这个authorized_keys文件复制到其他两台机器
[root@node1 ~]# scp /root/.ssh/authorized_keys node2:/root/.ssh/
[root@node1 ~]# scp /root/.ssh/authorized_keys node3:/root/.ssh/
可以无密码登录
[root@node1 ~]# ssh node2
[root@node1 ~]# ssh node3
下载jdk包 jdk-8u152-linux-x64.tar.gz 1.8版本
下载Hadoop包 hadoop-3.2.0.tar.gz
jdk配置
3台主机都做 node1为例
[root@node1 ~]# tar zxf jdk-8u152-linux-x64.tar.gz
[root@node1 ~]# ln -s jdk1.8.0_152 jdk
[root@node1 ~]# vim /etc/profile
文件最下方加入下面的配置
export JAVA_HOME=/root/jdk
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
[root@node1 ~]# source /etc/profile
[root@node1 ~]# java -version
java version "1.8.0_152"
Java(TM) SE Runtime Environment (build 1.8.0_152-b16)
Java HotSpot(TM) 64-Bit Server VM (build 25.152-b16, mixed mode)
hadoop配置
[root@node1 ~]# mkdir -p /data/hadoop/{tmp,hdfs/{name,data}} 3台主机都做
[root@node1 ~]# vim /etc/profile 3台主机都做
文件最下方加入下面的配置
export HADOOP_HOME=/root/hadoop
export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH
export LD_LIBRARY_PATH=$HADOOP_HOME/lib/native
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop
[root@node1 ~]# source /etc/profile 3台主机都做
下面命令，仅主机node1做，然后把文件复制到node2和node3即可
[root@node1 ~]# tar xzf hadoop-3.2.0.tar.gz
[root@node1 ~]# cd hadoop/etc/hadoop/
[root@node1 hadoop]# vim hadoop-env.sh
在配置文件里面增加以下配置
export JAVA_HOME=/root/jdk
export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export YARN_RESOURCEMANAGER_USER=root
export YARN_NODEMANAGER_USER=root
[root@node1 hadoop]# vim core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://node1:8020</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/data/hadoop/tmp</value>
</property>
</configuration>
[root@node1 hadoop]# vim hdfs-site.xml
<configuration>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>node3:50090</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/data/hadoop/hdfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/data/hadoop/hdfs/data</value>
</property>
</configuration>
[root@node1 hadoop]# vim yarn-site.xml
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.nodemanager.localizer.address</name>
<value>0.0.0.0:8140</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>node2</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<property>
<name>yarn.log-aggregation.retain-seconds</name>
<value>106800</value>
</property>
<property>
<name>yarn.log.server.url</name>
<value>http://node3:19888/jobhistory/logs</value>
</property>
</configuration>
[root@node1 hadoop]# vim mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>mapreduce.jobhistory.address</name>
<value>node3:10020</value>
</property>
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>node3:19888</value>
</property>
</configuration>
[root@node1 hadoop]# vim workers
node1.fgq.com
node2.fgq.com
node3.fgq.com
在node2和node3上复制node1的hadoop文件到本机
[root@node2 ~]# scp -r root@node1:/root/hadoop .
[root@node3 ~]# scp -r root@node1:/root/hadoop .
启动
在NameNode机器上执行格式化
[root@node1 ~]# hdfs namenode -format
WARNING: /root/hadoop/logs does not exist. Creating.
2019-02-26 15:47:18,766 INFO namenode.NameNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting NameNode
STARTUP_MSG: host = node1.fgq.com/192.168.25.11
STARTUP_MSG: args = [-format]
STARTUP_MSG: version = 3.2.0
... ...
2019-02-26 15:47:20,080 INFO common.Storage: Storage directory /data/hadoop/hdfs/name has been successfully formatted.
2019-02-26 15:47:20,092 INFO namenode.FSImageFormatProtobuf: Saving image file /data/hadoop/hdfs/name/current/fsimage.ckpt_0000000000000000000 using no compression
2019-02-26 15:47:20,170 INFO namenode.FSImageFormatProtobuf: Image file /data/hadoop/hdfs/name/current/fsimage.ckpt_0000000000000000000 of size 399 bytes saved in 0 seconds .
2019-02-26 15:47:20,179 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0
2019-02-26 15:47:20,190 INFO namenode.NameNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at node1.fgq.com/192.168.25.11
************************************************************/
执行成功，倒数第8行有successfully字样
在node1上启动HDFS
[root@node1 ~]# start-dfs.sh
Starting namenodes on [node1]
Last login: Tue Feb 26 14:36:34 CST 2019 from 192.168.25.1 on pts/1
Starting datanodes
Last login: Tue Feb 26 15:48:32 CST 2019 on pts/0
node3.fgq.com: Warning: Permanently added 'node3.fgq.com' (ECDSA) to the list of known hosts.
node1.fgq.com: Warning: Permanently added 'node1.fgq.com' (ECDSA) to the list of known hosts.
node2.fgq.com: Warning: Permanently added 'node2.fgq.com' (ECDSA) to the list of known hosts.
node3.fgq.com: WARNING: /root/hadoop/logs does not exist. Creating.
node2.fgq.com: WARNING: /root/hadoop/logs does not exist. Creating.
Starting secondary namenodes [node3]
Last login: Tue Feb 26 15:48:35 CST 2019 on pts/0
在node1上启动YARN
[root@node1 ~]# start-yarn.sh
WARNING: YARN_CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.
Starting resourcemanager
Last login: Tue Feb 26 15:48:39 CST 2019 on pts/0
WARNING: YARN_CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.
Starting nodemanagers
Last login: Tue Feb 26 15:48:57 CST 2019 on pts/0
WARNING: YARN_CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.
在node2上启动ResourceManager
[root@node2 ~]# yarn --daemon start resourcemanager
WARNING: YARN_CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.
[root@node2 ~]# echo $?
0
在node3上启动日志服务
规划是在node3服务器上运行MapReduce日志服务
[root@node3 ~]# mapred --daemon start historyserver
[root@node3 ~]# echo $?
0
执行jps命令，测试是否可以成功
[root@node1 ~]# jps
2034 DataNode
2579 NodeManager
1894 NameNode
2743 Jps
[root@node2 ~]# jps
1930 ResourceManager
2171 Jps
1679 DataNode
1791 NodeManager
[root@node3 ~]# jps
1986 JobHistoryServer
2071 Jps
1736 SecondaryNameNode
1818 NodeManager
1629 DataNode
在node1上查看name和data下面的VERSION的clusterID是否一致
[root@node1 ~]# cat /data/hadoop/hdfs/name/current/VERSION
#Tue Feb 26 15:47:20 CST 2019
namespaceID=1992157079
clusterID=CID-2cae4f5e-21cb-4710-beb5-571fb5f6c602
cTime=1551167240059
storageType=NAME_NODE
blockpoolID=BP-1252608076-192.168.25.11-1551167240059
layoutVersion=-65
[root@node1 ~]# cat /data/hadoop/hdfs/data/current/VERSION
#Tue Feb 26 15:48:39 CST 2019
storageID=DS-ca07dc35-8601-453e-9ee1-70df29905e58
clusterID=CID-2cae4f5e-21cb-4710-beb5-571fb5f6c602
cTime=0
datanodeUuid=95f82aab-92c8-4c1c-b72d-23fbcce352d8
storageType=DATA_NODE
layoutVersion=-57
Hadoop命令操作
[root@node1 ~]# hdfs dfs -ls -R /
drwxrwx--- - root supergroup 0 2019-02-26 15:50 /tmp
drwxrwx--- - root supergroup 0 2019-02-26 15:50 /tmp/hadoop-yarn
drwxrwx--- - root supergroup 0 2019-02-26 15:50 /tmp/hadoop-yarn/staging
drwxrwx--- - root supergroup 0 2019-02-26 15:50 /tmp/hadoop-yarn/staging/history
drwxrwx--- - root supergroup 0 2019-02-26 15:50 /tmp/hadoop-yarn/staging/history/done
drwxrwxrwt - root supergroup 0 2019-02-26 15:50 /tmp/hadoop-yarn/staging/history/done_intermediate
... ...
浏览器操作
http://192.168.25.11:9870
http://192.168.25.12:8088
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