hadoop如何安装部署
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一:准备工作 1:准备号JDK环境 2:关闭防火墙 3:selinux disabled 4: ssh安装 5:修改host文件 6:修改hostname
二:下载CDH http://archive.cloudera.com/cdh5/cdh/4/
三:环境变量配置 export JAVA_HOME=/home/bigdata/jdk1.7.0_45
export HADOOP_HOME=/home/hadoop/cdh5.4.0/hadoop-2.0.0-cdh5.4.0
export HADOOP_COMMOM_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_YARN_HOME=$HADOOP_HOME
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export HDFS_CONF_DIR=$HADOOP_HOME/etc/hadoop
export YARN_CONF_DIR=$HADOOP_HOME/etc/hadoop
export HADOOP_LIB=$HADOOP_HOME/lib
export JAVA_LIBRARY_PATH=$HADOOP_HOME/lib/native
export PATH=$PATH:/etc/haproxy/sbin/:$JAVA_HOME/bin:$JAVA_HOME/jre/bin export CLASSPATH=.:$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:$HADOOP_LIB/native/libhadoop.so
四:配置文件 core-site.xml
fs.default.name hdfs://hadoop-001:8020 hadoop.tmp.dir /hadoop/tmp fs.trash.interval 10080 fs.trash.checkpoint.interval 10080 hadoop.proxyuser.hadoop.hosts hadoop-001 hadoop.proxyuser.hadoop.groups hadoop
hdfs-site.xml
dfs.replication 2 dfs.namenode.name.dir file:/hadoop/name ture dfs.datanode.data.dir file:/hadoop/data ture dfs.permissions false dfs.namenode.http-address hadoop-001:50070 dfs.secondary.http.address hadoop-001:50090 dfs.webhdfs.enabled true
yarn-site.xml
yarn.resourcemanager.resource-tracker.address hadoop-001:18025 yarn.resourcemanager.address hadoop-001:18040 yarn.resourcemanager.scheduler.address hadoop-001:18030 yarn.resourcemanager.admin.address hadoop-001:18141 yarn.resourcemanager.webapp.address hadoop-001:8088 yarn.nodemanager.aux-services mapreduce.shuffle yarn.nodemanager.aux-services.mapreduce.shuffle.class org.apache.hadoop.mapred.ShuffleHandler yarn.application.classpath $HADOOP_CONF_DIR,$HADOOP_COMMON_HOME/share/hadoop/common/,$HADOOP_COMMON_HOME/share/hadoop/common/lib/,$HADOOP_HDFS_HOME/share/hadoop/hdfs/,$HADOOP_HDFS_HOME/share/hadoop/hdfs/lib/,$HADOOP_YARN_HOME/share/hadoop/yarn/,$HADOOP_YARN_HOME/share/hadoop/yarn/lib/
mapred-site.xml
mapreduce.framework.name yarn mapreduce.jobhistory.address hadoop-001:10020 mapreduce.jobhistory.webapp.address hadoop-001:19888 mapreduce.job.tracker hadoop-001:8021 ture mapred.system.dir file:/hadoop/mapred/system ture mapred.local.dir file:/hadoop/mapred/local ture mapred.child.env LD_LIBRARY_PATH=/usr/local/lib
五:创建号hdfs配置文件中的目录
六:格式化namenode hadoop namenode -format
七: 启动各自服务
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