Hadoop install：修订间差异
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| 第63行： | 第63行： | ||
</property> | </property> | ||
<property> | <property> | ||
<!-- 保存临时文件目录 --> | |||
<name>hadoop.tmp.dir</name> | <name>hadoop.tmp.dir</name> | ||
<value>/u01/hdfs/tmp</value> | <value>/u01/hdfs/tmp</value> | ||
| 第78行： | 第78行： | ||
</property> | </property> | ||
<property> | <property> | ||
<!-- 第二节点地址 --> | |||
<name>dfs.namenode.secondary.http-address</name> | <name>dfs.namenode.secondary.http-address</name> | ||
<value>'''g2-hdfs-02:9870'''</value> | <value>'''g2-hdfs-02:9870'''</value> | ||
| 第95行： | 第95行： | ||
</property> | </property> | ||
<property> | <property> | ||
<!-- 配置false后，无需权限即可生成dfs上的文件 --> | |||
<name>dfs.permissions</name> | <name>dfs.permissions</name> | ||
<value>false</value> | <value>false</value> | ||
</property> | </property> | ||
<property> | <property> | ||
<!-- 在文件中出现的主机会被下线 --> | |||
<name>dfs.hosts.exclude</name> | <name>dfs.hosts.exclude</name> | ||
<value>/opt/hadoop/etc/hadoop/workers.exclude</value> | <value>/opt/hadoop/etc/hadoop/workers.exclude</value> | ||
| 第108行： | 第108行： | ||
-- del | -- del | ||
<property> | <property> | ||
<!-- 备份数为默认值3 --> | |||
<name>dfs.replication</name> | <name>dfs.replication</name> | ||
<value>3</value> | <value>3</value> | ||
| 第191行： | 第191行： | ||
==== Node ==== | ==== Node ==== | ||
===== Status ===== | |||
hdfs dfsadmin -report | |||
yarn node -list | |||
===== Add ===== | ===== Add ===== | ||
2023年2月23日 (四) 22:28的版本
ENV
USER
groupadd hadoop -g 1001 useradd hdfs -g hadoop -u 1001
Java
ln -s /usr/java/jdk1.8.0_361/jre/bin/java /usr/bin/java
# Java Error
java 以前使用 --version 来查看版本的；java8 以后变更为 -version。
$ java --version Unrecognized option: --version Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.
$ java -version java version "1.8.0_361" Java(TM) SE Runtime Environment (build 1.8.0_361-b09) Java HotSpot(TM) 64-Bit Server VM (build 25.361-b09, mixed mode)
hadoop
ln -s /opt/hadoop-3.3.0 /opt/hadoop
profile
# Java, 20201010, Adam
export JAVA_HOME=/usr/java/jdk1.8.0_361
export PATH=$PATH:$JAVA_HOME/bin
# hadoop, 20201010, Adam
export HADOOP_HOME=/opt/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
export HADOOP_CONF_DIR=${HADOOP_HOME}/etc/hadoop
Hadoop 配置
配置 Hadoop 环境脚本文件中的 JAVA_HOME 参数
# hadoop是守护线程 读取不到 /etc/profile 里面配置的JAVA_HOME路径
# /opt/hadoop/etc/hadoop/ # hadoop-env.sh, mapred-env.sh, yarn-env.sh cp hadoop-env.sh hadoop-env.sh.20210409 cp mapred-env.sh mapred-env.sh.20210409 cp yarn-env.sh yarn-env.sh.20210409 echo ' # hdfs, 20210409, Adam export JAVA_HOME=/usr/java/jdk1.8.0_361' >>
Setup
core-site.xml (Common组件)
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://g2-hdfs-01:9000</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/u01/hdfs/tmp</value>
</property>
</configuration>
hdfs-site.xml (HDFS组件)
- 修改 dfs.replication 不影响历史文件的备份数。修改历史文件备份数：hadoop fs -setrep -R 3 <path>
<configuration>
<property>
<name>dfs.namenode.http-address</name>
<value>g2-hdfs-01:9870</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>g2-hdfs-02:9870</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/u01/hdfs/dfs/nn</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/u01/hdfs/dfs/dn</value>
</property>
<property>
<name>dfs.webhdfs.enabled</name>
<value>true</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
<property>
<name>dfs.hosts.exclude</name>
<value>/opt/hadoop/etc/hadoop/workers.exclude</value>
</property>
</configuration>
-- del
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.blocksize</name>
<value>268435456</value>
</property>
<property>
<name>dfs.namenode.handler.count</name>
<value>100</value>
</property>
mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
-- del
<property>
<name>mapreduce.jobhistory.address</name>
<value>g2-hdfs-01:10020</value>
</property>
<property>
<name>mapreduce.jobhistory.webapp.address</name>
<value>g2-hdfs-01:19888</value>
</property>
<property>
<name>mapreduce.application.classpath</name>
<value>$HADOOP_MAPRED_HOME/share/hadoop/mapreduce/*:$HADOOP_MAPRED_HOME/share/ hadoop/mapreduce/lib/*</value>
</property>
yarn-site.xml
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>g2-hdfs-01</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.webapp.address</name>
<value>g2-hdfs-01:8088</value>
</property>
<property>
<name>yarn.scheduler.maximum-allocation-mb</name>
<value>32768</value>
</property>
<property>
<name>yarn.nodemanager.vmem-check-enabled</name>
<value>false</value>
</property>
<property>
<name>yarn.nodemanager.env-whitelist</name>
<value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPE ND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
</property>
</configuration>
<property>
<name>yarn.resourcemanager.webapp.address</name>
<value>hadoop01/192.168.44.5:8088</value>
<description>配置外网只需要替换外网ip为真实ip，否则默认为 localhost:8088</description>
</property>
yarn.resourcemanager.hostname
指定yarn的ResourceManager管理界面的地址，不配的话，Active Node始终为0
yarn.scheduler.maximum-allocation-mb
每个节点可用内存,单位MB,默认8182MB
yarn.nodemanager.aux-services
reducer获取数据的方式
yarn.nodemanager.vmem-check-enabled
false = 忽略虚拟内存的检查
workers
g2-hdfs-01 g2-hdfs-02 ..
Node
Status
hdfs dfsadmin -report yarn node -list
Add
新增节点上启动 dfs & yarn 服务后，namenode 节点：
- 可看到新增节点
- workers 需增加新增节点主机名称，否则下次 start-dfs.sh 会漏掉该节点
Exclude
若在 hdfs-site.xml 中配置了 dfs.hosts.exclude，则可以动态下线主机。
hdfs dfsadmin -refreshNodes
注意：hdfs-site.xml 内容修改，需重启 dfs 生效。但配置了 dfs.hosts.exclude，修改相应文件后 refresh node 即可生效。
INIT
# Path mkdir -p /u01/hdfs/dfs/nn mkdir -p /u01/hdfs/dfs/dn mkdir -p /u01/hdfs/tmp # chown chown -R hdfs:hadoop /opt/hadoop* chown -R hdfs:hadoop /u01/hdfs # format nn /opt/hadoop/bin/hdfs namenode -format
Start
## Start : hdfs(发现需要用 hdfs 停服务，root不可停） /opt/hadoop/sbin/start-dfs.sh /opt/hadoop/sbin/start-yarn.sh /opt/hadoop/sbin/stop-dfs.sh /opt/hadoop/sbin/stop-yarn.sh http://mc0:9870 # hdfs http://mc0:8088 # yarn ## 单节点启停 # /opt/hadoop/bin hdfs --daemon start datanode hdfs --daemon start namenode yarn --daemon start resourcemanager yarn --daemon start nodemanager
SYNC
# HN=$1
HN=g2-hdfs-02
# hosts
ssh ${HN} "hostnamectl set-hostname ${HN}"
scp /etc/hosts ${HN}:/etc/hosts
# Java
scp /u01/soft/jdk_180361.tar.gz ${HN}:/tmp/
ssh ${HN} "cd /tmp;tar -xzvf jdk_180361.tar.gz;mkdir /usr/java/;mv jdk1.8.0_361 /usr/java/;"
ssh ${HN} "ln -s /usr/java/jdk1.8.0_361/jre/bin/java /usr/bin/java"
# Hadoop
ssh ${HN} "groupadd hadoop -g 1001;useradd hdfs -m -s /bin/bash -g hadoop -u 1001"
scp /home/hdfs/.ssh/authorized_keys ${HN}:/tmp/
ssh ${HN} "mkdir /home/hdfs/.ssh;mv /tmp/authorized_keys /home/hdfs/.ssh/;chown -R hdfs:hadoop /home/hdfs/.ssh"
scp /u01/soft/hadoop_334.tar.gz ${HN}:/tmp/
ssh ${HN} "cd /tmp;tar -xzvf hadoop_334.tar.gz;mv hadoop-3.3.4 /opt/;ln -s /opt/hadoop-3.3.4 /opt/hadoop;chown -R hdfs:hadoop /opt/hadoop*"
ssh ${HN} "mkdir -p /u01/hdfs/dfs/nn /u01/hdfs/dfs/dn /u01/hdfs/tmp;chown -R hdfs:hadoop /u01/hdfs"
ssh hdfs@${HN} "/opt/hadoop/bin/hdfs namenode -format"
Error
- ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.java.lang.IllegalArgumentException: Does not contain a valid host:port authority: esxi_mc0:9000
主机名称不合法，不允许包含‘.’ ‘/’ '_'等非法字符
- WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Unable to get NameNode addresses
检查 core-site.xml 中 fs.defaultFS 配置