一、安装并配置Linux
8. 使用当前root用户创建文件夹,并给/opt/下的所有文件夹及文件赋予775权限,修改用户组为当前用户
mkdir -p /opt/modules mkdir -p /opt/software mkdir -p /opt/datas mkdir -p /opt/tools chmod 775 /opt/* chown beifeng:beifeng /opt/*
最终效果如下:
[[email protected]02 opt]$ pwd /opt [[email protected]-hadoop-02 opt]$ ll total 20 drwxrwxr-x. 5 beifeng beifeng 4096 Jul 30 00:13 clusterapps drwxr-xr-x. 11 beifeng beifeng 4096 Jul 21 23:30 datas drwxr-xr-x. 6 beifeng beifeng 4096 Jul 31 22:03 modules drwxr-xr-x. 2 beifeng beifeng 4096 Jul 30 18:17 software drwxr-xr-x. 2 beifeng beifeng 4096 Jul 10 20:26 tools
二、安装并配置JDK
1. 安装文件
jdk-7u67-linux-x64.tar.gz
2. 解压
tar -zxvf jdk-7u67-linux-x64.tar.gz -C /opt/modules
3. 配置jdk
1)使用sudo配置/etc/profile,在文件尾加上以下配置
#JAVA_HOME export JAVA_HOME=/opt/modules/jdk1.7.0_67 export PATH=$PATH:$JAVA_HOME/bin
2)配置完成后,使用su - root 切换到root用户,使用source命令生效配置。
source /etc/profile
3)验证jdk是否安装成功
[[email protected]02 ~]# java -version java version "1.7.0_67" Java(TM) SE Runtime Environment (build 1.7.0_67-b01) Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode) [[email protected]-hadoop-02 ~]# javac -version javac 1.7.0_67
三、安装并配置hadoop
1. 安装文件
下载地址:http://archive.cloudera.com/cdh5/cdh/5/
下载: hadoop-2.5.0-cdh5.3.6.tar.gz
2. 解压
tar -zxvf hadoop-2.5.0-cdh5.3.6.tar.gz -C /opt/modules/cdh/
3. 配置伪分布式环境
参考文档: http://hadoop.apache.org/docs/r2.5.2/hadoop-project-dist/hadoop-common/ClusterSetup.html
cd /opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/etc/hadoop
修改/etc/profile,在文件尾增加以下配置:
#HADOOP_HOME export HADOOP_HOME=/opt/modules/cdh/hadoop-2.5.0-cdh5.3.6 export PATH=$PATH:$HADOOP_HOME/bin export PATH=$PATH:$HADOOP_HOME/sbin export HADOOP_MAPRED_HOME=$HADOOP_HOME export HADOOP_COMMON_HOME=$HADOOP_HOME export HADOOP_HDFS_HOME=$HADOOP_HOME export YARN_HOME=$HADOOP_HOME export HADOOP_COMMON_LIB_NATIE_DIR=$HADOOP_HOME/lib/native export HADOOP_OPTS="-Djava.library.path=$HADOOP_HOME/lib
建议使用远程sftp编辑工具,windows上可以使用notepad++,mac上推荐使用skEdit。
1)修改hadoop-evn.sh
export JAVA_HOME=/opt/modules/jdk1.7.0_67
2)修改yarn-env.sh
export JAVA_HOME=/opt/modules/jdk1.7.0_67
3)修改mapred-env.sh
export JAVA_HOME=/opt/modules/jdk1.7.0_67
4)修改core-site.xml
<configuration> <property> <name>fs.defaultFS</name> <value>hdfs://beifeng-hadoop-02:9000</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/opt/modules/cdh/hadoop-2.5.0-cdh5.3.6/data/tmp</value> </property> <property> <name>hadoop.http.staticuser.user</name> <value>beifeng</value> </property> </configuration>
5)修改hdfs-site.xml
<configuration> <!-- 数据副本数,副本数等于所有datanode的总和 --> <property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.namenode.secondary.http-address</name> <value>beifeng-hadoop-02:50090</value> </property> <property> <name>dfs.permissions.enabled</name> <value>false</value> </property> </configuration>
6)修改slaves
beifeng-hadoop-02
7)修改yarn-site.xml
<configuration> <!-- Site specific YARN configuration properties --> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <property> <name>yarn.resourcemanager.hostname</name> <value>beifeng-hadoop-02</value> </property> <!-- 是否启用日志聚集功能 --> <property> <name>yarn.log-aggregation-enable</name> <value>true</value> </property> <!-- 日志保留时间(单位为秒) --> <property> <name>yarn.log-aggregation.retain-seconds</name> <value>106800</value> </property> </configuration>
8) 修改mapred-site.xml
<configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>
9)启动服务
(1)格式化hdfs
bin/hdfs namenode -format
(2)启动namenode和datanode
sbin/hadoop-daemon.sh start namenode sbin/hadoop-daemon.sh start datanode
使用jps命令,或者web UI界面查看namenode是否已启动成功。
[[email protected]02 hadoop-2.5.0-cdh5.3.6]$ jps 82334 DataNode 82383 Jps 82248 NameNode
hdfs可视化界面: http://beifeng-hadoop-02:50070/dfshealth.html#tab-overview
(2)启动resourcemanager和nodemanager
sbin/yarn-daemon.sh start resourcemanager sbin/yarn-daemon.sh start nodemanager
使用jps命令,或者web UI界面查看resourcemanager和nodemanager是否已成功启动
[[email protected]02 hadoop-2.5.0-cdh5.3.6]$ jps 82334 DataNode 82757 NodeManager 82874 Jps 82248 NameNode 82507 ResourceManager
yarn可视化界面: http://beifeng-hadoop-02:8088/cluster
(3)启动job历史服务器
sbin/mr-jobhistory-daemon.sh start historyserver
查看是否已成功启动:
历史服务器可视化界面:http://beifeng-hadoop-02:19888/
(4)启动secondarynamenode
sbin/hadoop-daemon.sh start secondarynamenode
查看是否已成功启动:
secondarynamenode可视化界面 http://beifeng-hadoop-02:50090/status.html
(5)所有相关服务停止命令
sbin/hadoop-daemon.sh stop namenode sbin/hadoop-daemon.sh stop datanode sbin/yarn-daemon.sh stop resourcemanager sbin/yarn-daemon.sh stop nodemanager sbin/mr-jobhistory-daemon.sh stop historyserver sbin/hadoop-daemon.sh stop secondarynamenode
10)跑一个wordcount 验证环境搭建结果
文件系统shell:http://archive.cloudera.com/cdh5/cdh/5/hadoop-2.5.0-cdh5.3.6/hadoop-project-dist/hadoop-common/FileSystemShell.html
hdfs dfs -mkdir -p /user/beifeng/input hadoop jar share/hadoop/mapreduce/hadoop-mapreduce-examples-2.5.0-cdh5.3.6.jar wordcount /user/beifeng/input /user/beifeng/output hdfs dfs -cat /user/beifeng/output/part-r-00000