在本机上装的CentOS 5.5 虚拟机，

软件准备：jdk 1.6 U26

hadoop:hadoop-0.20.203.tar.gz

ssh检查配置

  1. [root@localhost ~]# ssh-keygen -t  rsa
  2. Generating public/private rsa key pair.
  3. Enter file in which to save the key (/root/.ssh/id_rsa):
  4. Created directory '/root/.ssh'.
  5. Enter passphrase (empty for no passphrase):
  6. Enter same passphrase again:
  7. Your identification has been saved in /root/.ssh/id_rsa.
  8. Your public key has been saved in /root/.ssh/id_rsa.pub.
  9. The key fingerprint is:
  10. a8:7a:3e:f6:92:85:b8:c7:be:d9:0e:45:9c:d1:36:3b root@localhost.localdomain
  11. [root@localhost ~]#
  12. [root@localhost ~]# cd ..
  13. [root@localhost /]# cd root
  14. [root@localhost ~]# ls
  15. anaconda-ks.cfg  Desktop  install.log  install.log.syslog
  16. [root@localhost ~]# cd .ssh
  17. [root@localhost .ssh]# cat id_rsa.pub > authorized_keys
  18. [root@localhost .ssh]#
  19. [root@localhost .ssh]# ssh localhost
  20. The authenticity of host 'localhost (127.0.0.1)' can't be established.
  21. RSA key fingerprint is 41:c8:d4:e4:60:71:6f:6a:33:6a:25:27:62:9b:e3:90.
  22. Are you sure you want to continue connecting (yes/no)? yes
  23. Warning: Permanently added 'localhost' (RSA) to the list of known hosts.
  24. Last login: Tue Jun 21 22:40:31 2011
  25. [root@localhost ~]#
[root@localhost ~]# ssh-keygen -t  rsa

Generating public/private rsa key pair.

Enter file in which to save the key (/root/.ssh/id_rsa):

Created directory '/root/.ssh'.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

Your identification has been saved in /root/.ssh/id_rsa.

Your public key has been saved in /root/.ssh/id_rsa.pub.

The key fingerprint is:

a8:7a:3e:f6:92:85:b8:c7:be:d9:0e:45:9c:d1:36:3b root@localhost.localdomain

[root@localhost ~]#

[root@localhost ~]# cd ..

[root@localhost /]# cd root

[root@localhost ~]# ls

anaconda-ks.cfg  Desktop  install.log  install.log.syslog

[root@localhost ~]# cd .ssh

[root@localhost .ssh]# cat id_rsa.pub > authorized_keys

[root@localhost .ssh]# 

[root@localhost .ssh]# ssh localhost

The authenticity of host 'localhost (127.0.0.1)' can't be established.

RSA key fingerprint is 41:c8:d4:e4:60:71:6f:6a:33:6a:25:27:62:9b:e3:90.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added 'localhost' (RSA) to the list of known hosts.

Last login: Tue Jun 21 22:40:31 2011

[root@localhost ~]#

安装jdk

  1. [root@localhost java]# chmod +x jdk-6u26-linux-i586.bin
  2. [root@localhost java]# ./jdk-6u26-linux-i586.bin
  3. ......
  4. ......
  5. ......
  6. For more information on what data Registration collects and
  7. how it is managed and used, see:
  8. http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html
  9. Press Enter to continue.....
  10. Done.
[root@localhost java]# chmod +x jdk-6u26-linux-i586.bin

[root@localhost java]# ./jdk-6u26-linux-i586.bin

......

......

......

For more information on what data Registration collects and

how it is managed and used, see:

http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html

Press Enter to continue.....

Done.

安装完成后生成文件夹：jdk1.6.0_26

  配置环境变量

  1. [root@localhost java]# vi /etc/profile
  2. #添加如下信息
  3. # set java environment
  4. export JAVA_HOME=/usr/java/jdk1.6.0_26
  5. export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
  6. export PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin:$PATH:$HOME/bin
  7. export HADOOP_HOME=/usr/local/hadoop/hadoop-0.20.203
  8. export PATH=$PATH:$HADOOP_HOME/bin
  9. [root@localhost java]# chmod +x  /etc/profile
  10. [root@localhost java]# source  /etc/profile
  11. [root@localhost java]#
  12. [root@localhost java]# java -version
  13. java version "1.6.0_26"
  14. Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
  15. Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)
  16. [root@localhost java]#
[root@localhost java]# vi /etc/profile

#添加如下信息

# set java environment

export JAVA_HOME=/usr/java/jdk1.6.0_26

export CLASSPATH=$CLASSPATH:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

export PATH=$JAVA_HOME/lib:$JAVA_HOME/jre/bin:$PATH:$HOME/bin

export HADOOP_HOME=/usr/local/hadoop/hadoop-0.20.203

export PATH=$PATH:$HADOOP_HOME/bin

[root@localhost java]# chmod +x  /etc/profile

[root@localhost java]# source  /etc/profile

[root@localhost java]#

[root@localhost java]# java -version

java version "1.6.0_26"

Java(TM) SE Runtime Environment (build 1.6.0_26-b03)

Java HotSpot(TM) Client VM (build 20.1-b02, mixed mode, sharing)

[root@localhost java]#

修改hosts

  1. [root@localhost conf]# vi /etc/hosts
  2. # Do not remove the following line, or various programs
  3. # that require network functionality will fail.
  4. 127.0.0.1               localhost.localdomain localhost
  5. ::1             localhost6.localdomain6 localhost6
  6. 127.0.0.1       namenode datanode01
[root@localhost conf]# vi /etc/hosts

# Do not remove the following line, or various programs

# that require network functionality will fail.

127.0.0.1               localhost.localdomain localhost

::1             localhost6.localdomain6 localhost6

127.0.0.1       namenode datanode01

解压安装hadoop

  1. [root@localhost hadoop]# tar zxvf hadoop-0.20.203.tar.gz
  2. ......
  3. ......
  4. ......
  5. hadoop-0.20.203.0/src/contrib/ec2/bin/image/create-hadoop-image-remote
  6. hadoop-0.20.203.0/src/contrib/ec2/bin/image/ec2-run-user-data
  7. hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-cluster
  8. hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-master
  9. hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-slaves
  10. hadoop-0.20.203.0/src/contrib/ec2/bin/list-hadoop-clusters
  11. hadoop-0.20.203.0/src/contrib/ec2/bin/terminate-hadoop-cluster
  12. [root@localhost hadoop]#
[root@localhost hadoop]# tar zxvf hadoop-0.20.203.tar.gz

......

......

......

hadoop-0.20.203.0/src/contrib/ec2/bin/image/create-hadoop-image-remote

hadoop-0.20.203.0/src/contrib/ec2/bin/image/ec2-run-user-data

hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-cluster

hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-master

hadoop-0.20.203.0/src/contrib/ec2/bin/launch-hadoop-slaves

hadoop-0.20.203.0/src/contrib/ec2/bin/list-hadoop-clusters

hadoop-0.20.203.0/src/contrib/ec2/bin/terminate-hadoop-cluster

[root@localhost hadoop]#

  进入hadoop配置conf

  1. ####################################
  2. [root@localhost conf]# vi hadoop-env.sh
  3. # 添加代码
  4. # set java environment
  5. export JAVA_HOME=/usr/java/jdk1.6.0_26
  6. #####################################
  7. [root@localhost conf]# vi core-site.xml
  8. <?xml version="1.0"?>
  9. <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
  10. <!-- Put site-specific property overrides in this file. -->
  11. <configuration>
  12. <property>
  13. <name>fs.default.name</name>
  14. <value>hdfs://namenode:9000/</value>
  15. </property>
  16. <property>
  17. <name>hadoop.tmp.dir</name>
  18. <value>/usr/local/hadoop/hadooptmp</value>
  19. </property>
  20. </configuration>
  21. #######################################
  22. [root@localhost conf]# vi hdfs-site.xml
  23. <?xml version="1.0"?>
  24. <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
  25. <!-- Put site-specific property overrides in this file. -->
  26. <configuration>
  27. <property>
  28. <name>dfs.name.dir</name>
  29. <value>/usr/local/hadoop/hdfs/name</value>
  30. </property>
  31. <property>
  32. <name>dfs.data.dir</name>
  33. <value>/usr/local/hadoop/hdfs/data</value>
  34. </property>
  35. <property>
  36. <name>dfs.replication</name>
  37. <value>1</value>
  38. </property>
  39. </configuration>
  40. #########################################
  41. [root@localhost conf]# vi mapred-site.xml
  42. <?xml version="1.0"?>
  43. <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
  44. <!-- Put site-specific property overrides in this file. -->
  45. <configuration>
  46. <property>
  47. <name>mapred.job.tracker</name>
  48. <value>namenode:9001</value>
  49. </property>
  50. <property>
  51. <name>mapred.local.dir</name>
  52. <value>/usr/local/hadoop/mapred/local</value>
  53. </property>
  54. <property>
  55. <name>mapred.system.dir</name>
  56. <value>/tmp/hadoop/mapred/system</value>
  57. </property>
  58. </configuration>
  59. #########################################
  60. [root@localhost conf]# vi masters
  61. #localhost
  62. namenode
  63. #########################################
  64. [root@localhost conf]# vi slaves
  65. #localhost
  66. datanode01
####################################

[root@localhost conf]# vi hadoop-env.sh

# 添加代码

# set java environment

  export JAVA_HOME=/usr/java/jdk1.6.0_26

#####################################

[root@localhost conf]# vi core-site.xml

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>

   <property>

     <name>fs.default.name</name>

     <value>hdfs://namenode:9000/</value>

   </property>

   <property>

     <name>hadoop.tmp.dir</name>

     <value>/usr/local/hadoop/hadooptmp</value>

   </property>

</configuration>

#######################################

[root@localhost conf]# vi hdfs-site.xml

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>

<property>

     <name>dfs.name.dir</name>

     <value>/usr/local/hadoop/hdfs/name</value>

  </property>

  <property>

     <name>dfs.data.dir</name>

     <value>/usr/local/hadoop/hdfs/data</value>

  </property>

  <property>

     <name>dfs.replication</name>

     <value>1</value>

  </property>

</configuration>

#########################################

[root@localhost conf]# vi mapred-site.xml

<?xml version="1.0"?>

<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>

  <property>

     <name>mapred.job.tracker</name>

     <value>namenode:9001</value>

  </property>

  <property>

     <name>mapred.local.dir</name>

     <value>/usr/local/hadoop/mapred/local</value>

  </property>

  <property>

     <name>mapred.system.dir</name>

     <value>/tmp/hadoop/mapred/system</value>

  </property>

</configuration>

#########################################

[root@localhost conf]# vi masters

#localhost

namenode

#########################################

[root@localhost conf]# vi slaves

#localhost

datanode01

启动 hadoop

  1. #####################<span style="font-size: small;">格式化namenode##############</span>
  2. [root@localhost bin]# hadoop namenode -format
  3. 11/06/23 00:43:54 INFO namenode.NameNode: STARTUP_MSG:
  4. /************************************************************
  5. STARTUP_MSG: Starting NameNode
  6. STARTUP_MSG:   host = localhost.localdomain/127.0.0.1
  7. STARTUP_MSG:   args = [-format]
  8. STARTUP_MSG:   version = 0.20.203.0
  9. STARTUP_MSG:   build = http://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security-203 -r 1099333; compiled by 'oom' on Wed May  4 07:57:50 PDT 2011
  10. ************************************************************/
  11. 11/06/23 00:43:55 INFO util.GSet: VM type       = 32-bit
  12. 11/06/23 00:43:55 INFO util.GSet: 2% max memory = 19.33375 MB
  13. 11/06/23 00:43:55 INFO util.GSet: capacity      = 2^22 = 4194304 entries
  14. 11/06/23 00:43:55 INFO util.GSet: recommended=4194304, actual=4194304
  15. 11/06/23 00:43:56 INFO namenode.FSNamesystem: fsOwner=root
  16. 11/06/23 00:43:56 INFO namenode.FSNamesystem: supergroup=supergroup
  17. 11/06/23 00:43:56 INFO namenode.FSNamesystem: isPermissionEnabled=true
  18. 11/06/23 00:43:56 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=100
  19. 11/06/23 00:43:56 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)
  20. 11/06/23 00:43:56 INFO namenode.NameNode: Caching file names occuring more than 10 times
  21. 11/06/23 00:43:57 INFO common.Storage: Image file of size 110 saved in 0 seconds.
  22. 11/06/23 00:43:57 INFO common.Storage: Storage directory /usr/local/hadoop/hdfs/name has been successfully formatted.
  23. 11/06/23 00:43:57 INFO namenode.NameNode: SHUTDOWN_MSG:
  24. /************************************************************
  25. SHUTDOWN_MSG: Shutting down NameNode at localhost.localdomain/127.0.0.1
  26. ************************************************************/
  27. [root@localhost bin]#
  28. ###########################################
  29. [root@localhost bin]# ./start-all.sh
  30. starting namenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-namenode-localhost.localdomain.out
  31. datanode01: starting datanode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-datanode-localhost.localdomain.out
  32. namenode: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-secondarynamenode-localhost.localdomain.out
  33. starting jobtracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-jobtracker-localhost.localdomain.out
  34. datanode01: starting tasktracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-tasktracker-localhost.localdomain.out
  35. [root@localhost bin]# jps
  36. 11971 TaskTracker
  37. 11807 SecondaryNameNode
  38. 11599 NameNode
  39. 12022 Jps
  40. 11710 DataNode
  41. 11877 JobTracker
#####################格式化namenode##############

[root@localhost bin]# hadoop namenode -format

11/06/23 00:43:54 INFO namenode.NameNode: STARTUP_MSG:

/************************************************************

STARTUP_MSG: Starting NameNode

STARTUP_MSG:   host = localhost.localdomain/127.0.0.1

STARTUP_MSG:   args = [-format]

STARTUP_MSG:   version = 0.20.203.0

STARTUP_MSG:   build = http://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.20-security-203 -r 1099333; compiled by 'oom' on Wed May  4 07:57:50 PDT 2011

************************************************************/

11/06/23 00:43:55 INFO util.GSet: VM type       = 32-bit

11/06/23 00:43:55 INFO util.GSet: 2% max memory = 19.33375 MB

11/06/23 00:43:55 INFO util.GSet: capacity      = 2^22 = 4194304 entries

11/06/23 00:43:55 INFO util.GSet: recommended=4194304, actual=4194304

11/06/23 00:43:56 INFO namenode.FSNamesystem: fsOwner=root

11/06/23 00:43:56 INFO namenode.FSNamesystem: supergroup=supergroup

11/06/23 00:43:56 INFO namenode.FSNamesystem: isPermissionEnabled=true

11/06/23 00:43:56 INFO namenode.FSNamesystem: dfs.block.invalidate.limit=100

11/06/23 00:43:56 INFO namenode.FSNamesystem: isAccessTokenEnabled=false accessKeyUpdateInterval=0 min(s), accessTokenLifetime=0 min(s)

11/06/23 00:43:56 INFO namenode.NameNode: Caching file names occuring more than 10 times

11/06/23 00:43:57 INFO common.Storage: Image file of size 110 saved in 0 seconds.

11/06/23 00:43:57 INFO common.Storage: Storage directory /usr/local/hadoop/hdfs/name has been successfully formatted.

11/06/23 00:43:57 INFO namenode.NameNode: SHUTDOWN_MSG:

/************************************************************

SHUTDOWN_MSG: Shutting down NameNode at localhost.localdomain/127.0.0.1

************************************************************/

[root@localhost bin]# 

###########################################

[root@localhost bin]# ./start-all.sh

starting namenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-namenode-localhost.localdomain.out

datanode01: starting datanode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-datanode-localhost.localdomain.out

namenode: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-secondarynamenode-localhost.localdomain.out

starting jobtracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-jobtracker-localhost.localdomain.out

datanode01: starting tasktracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-tasktracker-localhost.localdomain.out

[root@localhost bin]# jps

11971 TaskTracker

11807 SecondaryNameNode

11599 NameNode

12022 Jps

11710 DataNode

11877 JobTracker

  查看集群状态

  1. [root@localhost bin]# hadoop dfsadmin  -report
  2. Configured Capacity: 4055396352 (3.78 GB)
  3. Present Capacity: 464142351 (442.64 MB)
  4. DFS Remaining: 464089088 (442.59 MB)
  5. DFS Used: 53263 (52.01 KB)
  6. DFS Used%: 0.01%
  7. Under replicated blocks: 0
  8. Blocks with corrupt replicas: 0
  9. Missing blocks: 0
  10. -------------------------------------------------
  11. Datanodes available: 1 (1 total, 0 dead)
  12. Name: 127.0.0.1:50010
  13. Decommission Status : Normal
  14. Configured Capacity: 4055396352 (3.78 GB)
  15. DFS Used: 53263 (52.01 KB)
  16. Non DFS Used: 3591254001 (3.34 GB)
  17. DFS Remaining: 464089088(442.59 MB)
  18. DFS Used%: 0%
  19. DFS Remaining%: 11.44%
  20. Last contact: Thu Jun 23 01:11:15 PDT 2011
  21. [root@localhost bin]#
[root@localhost bin]# hadoop dfsadmin  -report

Configured Capacity: 4055396352 (3.78 GB)

Present Capacity: 464142351 (442.64 MB)

DFS Remaining: 464089088 (442.59 MB)

DFS Used: 53263 (52.01 KB)

DFS Used%: 0.01%

Under replicated blocks: 0

Blocks with corrupt replicas: 0

Missing blocks: 0

-------------------------------------------------

Datanodes available: 1 (1 total, 0 dead)

Name: 127.0.0.1:50010

Decommission Status : Normal

Configured Capacity: 4055396352 (3.78 GB)

DFS Used: 53263 (52.01 KB)

Non DFS Used: 3591254001 (3.34 GB)

DFS Remaining: 464089088(442.59 MB)

DFS Used%: 0%

DFS Remaining%: 11.44%

Last contact: Thu Jun 23 01:11:15 PDT 2011

[root@localhost bin]#

  其他问题： 1

  1. ####################启动报错##########
  2. [root@localhost bin]# ./start-all.sh
  3. starting namenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-namenode-localhost.localdomain.out
  4. The authenticity of host 'datanode01 (127.0.0.1)' can't be established.
  5. RSA key fingerprint is 41:c8:d4:e4:60:71:6f:6a:33:6a:25:27:62:9b:e3:90.
  6. Are you sure you want to continue connecting (yes/no)? y
  7. Please type 'yes' or 'no': yes
  8. datanode01: Warning: Permanently added 'datanode01' (RSA) to the list of known hosts.
  9. datanode01: starting datanode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-datanode-localhost.localdomain.out
  10. <strong><span style="color: rgb(255, 0, 0);">datanode01: Unrecognized option: -jvm
  11. datanode01: Could not create the Java virtual machine.</span>
  12. </strong>
  13. namenode: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-secondarynamenode-localhost.localdomain.out
  14. starting jobtracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-jobtracker-localhost.localdomain.out
  15. datanode01: starting tasktracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-tasktracker-localhost.localdomain.out
  16. [root@localhost bin]# jps
  17. 10442 JobTracker
  18. 10533 TaskTracker
  19. 10386 SecondaryNameNode
  20. 10201 NameNode
  21. 10658 Jps
  22. ################################################
  23. [root@localhost bin]# vi hadoop
  24. elif [ "$COMMAND" = "datanode" ] ; then
  25. CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'
  26. if [[ $EUID -eq 0 ]]; then
  27. HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"
  28. else
  29. HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"
  30. fi
  31. #http://javoft.net/2011/06/hadoop-unrecognized-option-jvm-could-not-create-the-java-virtual-machine/
  32. #改为
  33. elif [ "$COMMAND" = "datanode" ] ; then
  34. CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'
  35. #  if [[ $EUID -eq 0 ]]; then
  36. #    HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"
  37. #  else
  38. HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"
  39. #  fi
  40. #或者换非root用户启动
  41. #启动成功
####################启动报错##########

[root@localhost bin]# ./start-all.sh

starting namenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-namenode-localhost.localdomain.out

The authenticity of host 'datanode01 (127.0.0.1)' can't be established.

RSA key fingerprint is 41:c8:d4:e4:60:71:6f:6a:33:6a:25:27:62:9b:e3:90.

Are you sure you want to continue connecting (yes/no)? y

Please type 'yes' or 'no': yes

datanode01: Warning: Permanently added 'datanode01' (RSA) to the list of known hosts.

datanode01: starting datanode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-datanode-localhost.localdomain.out

datanode01: Unrecognized option: -jvm

datanode01: Could not create the Java virtual machine.



namenode: starting secondarynamenode, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-secondarynamenode-localhost.localdomain.out

starting jobtracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-jobtracker-localhost.localdomain.out

datanode01: starting tasktracker, logging to /usr/local/hadoop/hadoop-0.20.203/bin/../logs/hadoop-root-tasktracker-localhost.localdomain.out

[root@localhost bin]# jps

10442 JobTracker

10533 TaskTracker

10386 SecondaryNameNode

10201 NameNode

10658 Jps

################################################

[root@localhost bin]# vi hadoop

elif [ "$COMMAND" = "datanode" ] ; then

  CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'

  if [[ $EUID -eq 0 ]]; then

    HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"

  else

    HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"

  fi

#http://javoft.net/2011/06/hadoop-unrecognized-option-jvm-could-not-create-the-java-virtual-machine/

#改为

elif [ "$COMMAND" = "datanode" ] ; then

  CLASS='org.apache.hadoop.hdfs.server.datanode.DataNode'

#  if [[ $EUID -eq 0 ]]; then

#    HADOOP_OPTS="$HADOOP_OPTS -jvm server $HADOOP_DATANODE_OPTS"

#  else

    HADOOP_OPTS="$HADOOP_OPTS -server $HADOOP_DATANODE_OPTS"

#  fi

#或者换非root用户启动

#启动成功

2，启动时要关闭防火墙

查看运行情况：

http://localhost:50070

  1. NameNode 'localhost.localdomain:9000'
  2. Started:    Thu Jun 23 01:07:18 PDT 2011
  3. Version:    0.20.203.0, r1099333
  4. Compiled:   Wed May 4 07:57:50 PDT 2011 by oom
  5. Upgrades:   There are no upgrades in progress.
  6. Browse the filesystem
  7. Namenode Logs
  8. Cluster Summary
  9. 6 files and directories, 1 blocks = 7 total. Heap Size is 31.38 MB / 966.69 MB (3%)
  10. Configured Capacity :   3.78 GB
  11. DFS Used    :   52.01 KB
  12. Non DFS Used    :   3.34 GB
  13. DFS Remaining   :   442.38 MB
  14. DFS Used%   :   0 %
  15. DFS Remaining%  :   11.44 %
  16. Live Nodes  :   1
  17. Dead Nodes  :   0
  18. Decommissioning Nodes   :   0
  19. Number of Under-Replicated Blocks   :   0
  20. NameNode Storage:
  21. Storage Directory   Type    State
  22. /usr/local/hadoop/hdfs/name IMAGE_AND_EDITS Active
NameNode 'localhost.localdomain:9000'

Started: 	Thu Jun 23 01:07:18 PDT 2011

Version: 	0.20.203.0, r1099333

Compiled: 	Wed May 4 07:57:50 PDT 2011 by oom

Upgrades: 	There are no upgrades in progress.

Browse the filesystem

Namenode Logs

Cluster Summary

6 files and directories, 1 blocks = 7 total. Heap Size is 31.38 MB / 966.69 MB (3%)

Configured Capacity	:	3.78 GB

DFS Used	:	52.01 KB

Non DFS Used	:	3.34 GB

DFS Remaining	:	442.38 MB

DFS Used%	:	0 %

DFS Remaining%	:	11.44 %

Live Nodes 	:	1

Dead Nodes 	:	0

Decommissioning Nodes 	:	0

Number of Under-Replicated Blocks	:	0

NameNode Storage:

Storage Directory	Type	State

/usr/local/hadoop/hdfs/name	IMAGE_AND_EDITS	Active

http://localhost:50030

  1. namenode Hadoop Map/Reduce Administration
  2. Quick Links
  3. * Scheduling Info
  4. * Running Jobs
  5. * Retired Jobs
  6. * Local Logs
  7. State: RUNNING
  8. Started: Thu Jun 23 01:07:30 PDT 2011
  9. Version: 0.20.203.0, r1099333
  10. Compiled: Wed May 4 07:57:50 PDT 2011 by oom
  11. Identifier: 201106230107
  12. Cluster Summary (Heap Size is 15.31 MB/966.69 MB)
  13. Running Map Tasks   Running Reduce Tasks    Total Submissions   Nodes   Occupied Map Slots  Occupied Reduce Slots   Reserved Map Slots  Reserved Reduce Slots   Map Task Capacity   Reduce Task Capacity    Avg. Tasks/Node Blacklisted Nodes   Graylisted Nodes    Excluded Nodes
  14. 0   0   0   1   0   0   0   0   2   2   4.00    0   0   0
  15. Scheduling Information
  16. Queue Name  State   Scheduling Information
  17. default     running     N/A
  18. Filter (Jobid, Priority, User, Name)
  19. Example: 'user:smith 3200' will filter by 'smith' only in the user field and '3200' in all fields
  20. Running Jobs
  21. none
  22. Retired Jobs
  23. none
  24. Local Logs
  25. Log directory, Job Tracker History This is Apache Hadoop release 0.20.203.0
namenode Hadoop Map/Reduce Administration

Quick Links

    * Scheduling Info

    * Running Jobs

    * Retired Jobs

    * Local Logs

State: RUNNING

Started: Thu Jun 23 01:07:30 PDT 2011

Version: 0.20.203.0, r1099333

Compiled: Wed May 4 07:57:50 PDT 2011 by oom

Identifier: 201106230107

Cluster Summary (Heap Size is 15.31 MB/966.69 MB)

Running Map Tasks	Running Reduce Tasks	Total Submissions	Nodes	Occupied Map Slots	Occupied Reduce Slots	Reserved Map Slots	Reserved Reduce Slots	Map Task Capacity	Reduce Task Capacity	Avg. Tasks/Node	Blacklisted Nodes	Graylisted Nodes	Excluded Nodes

0	0	0	1	0	0	0	0	2	2	4.00	0	0	0

Scheduling Information

Queue Name 	State 	Scheduling Information

default 	running 	N/A

Filter (Jobid, Priority, User, Name)

Example: 'user:smith 3200' will filter by 'smith' only in the user field and '3200' in all fields

Running Jobs

none

Retired Jobs

none

Local Logs

Log directory, Job Tracker History This is Apache Hadoop release 0.20.203.0

测试：

  1. ##########建立目录名称##########
  2. [root@localhost bin]# hadoop fs -mkdir  testFolder
  3. ###############拷贝文件到文件夹中
  4. [root@localhost local]# ls
  5. bin  etc  games  hadoop  include  lib  libexec  sbin  share  src  SSH_key_file
  6. [root@localhost local]# hadoop fs -copyFromLocal SSH_key_file testFolder
  7. 进入web页面即可查看
##########建立目录名称##########

[root@localhost bin]# hadoop fs -mkdir  testFolder

###############拷贝文件到文件夹中

[root@localhost local]# ls

bin  etc  games  hadoop  include  lib  libexec  sbin  share  src  SSH_key_file

[root@localhost local]# hadoop fs -copyFromLocal SSH_key_file testFolder

进入web页面即可查看

参考：http://bxyzzy.blog.51cto.com/854497/352692

附：  准备FTP :yum install vsftpd (方便文件传输  和hadoop无关)

关闭防火墙：service iptables start

启动FTP：service vsftpd start

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