linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ cat mapred-site.xml
<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="https://www.linuxidc.com/configuration.xsl"?>
<!-- Put site-specific property overrides in this file. -->
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>localhost:9001</value>
</property>
</configuration>
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$
配置masters文件和slaves文件，这里因为我们是伪分布式，命名节点和数据节点其实都是一样。
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ cat masters
localhost
192.168.2.100
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ cat slaves
localhost
192.168.2.100
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$
编辑/etc/hosts文件，配置主机名和IP地址的映射关系
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ cat /etc/hosts
127.0.0.1 localhost
127.0.1.1 ubuntu
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
192.168.2.100 master
192.168.2.100 slave
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$
创建好core-default.xml，hdfs-site.xml，mapred-site.xml 三个配置文件里面写到的目录
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ mkdir -p /hadoop/hadooptmp
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ mkdir -p /hadoop/hdfs/name
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/conf$ mkdir -p /hadoop/hdfs/data
格式化HDFS
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/bin$ ./hadoop namenode -format
启动所有Hadoop服务，包括JobTracker，TaskTracker，Namenode
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/bin$ ./start-all.sh
starting namenode, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-namenode-ubuntu.out
192.168.68.130: starting datanode, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-datanode-ubuntu.out
localhost: starting datanode, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-datanode-ubuntu.out
localhost: ulimit -a for user linuxidc
localhost: core file size (blocks, -c) 0
localhost: data seg size (kbytes, -d) unlimited
localhost: scheduling priority (-e) 0
localhost: file size (blocks, -f) unlimited
localhost: pending signals (-i) 7855
localhost: max locked memory (kbytes, -l) 64
localhost: max memory size (kbytes, -m) unlimited
localhost: open files (-n) 1024
localhost: pipe size (512 bytes, -p) 8
localhost: starting secondarynamenode, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-secondarynamenode-ubuntu.out
192.168.68.130: secondarynamenode running as process 10689. Stop it first.
starting jobtracker, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-jobtracker-ubuntu.out
192.168.68.130: starting tasktracker, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-tasktracker-ubuntu.out
localhost: starting tasktracker, logging to /home/linuxidc/hadoop_1.2.1/hadoop-1.2.1/libexec/../logs/hadoop-linuxidc-tasktracker-ubuntu.out
localhost: ulimit -a for user linuxidc
localhost: core file size (blocks, -c) 0
localhost: data seg size (kbytes, -d) unlimited
localhost: scheduling priority (-e) 0
localhost: file size (blocks, -f) unlimited
localhost: pending signals (-i) 7855
localhost: max locked memory (kbytes, -l) 64
localhost: max memory size (kbytes, -m) unlimited
localhost: open files (-n) 1024
localhost: pipe size (512 bytes, -p) 8
linuxidc@ubuntu:~/hadoop_1.2.1/hadoop-1.2.1/bin$
查看Hadoop服务是否启动成功