Hi, I started with "ssh localhost" command. Does anything else is needed to check SSH?
Then I stopped all the services which were running by "stop-all.sh" and start them again with "start-all.sh". I have copied the way it executed on the terminal for some commands. I don't know, why after start-all.sh it says starting namenode and does not show any failure but when I check through jps it does not list namenode. I tried opening namenode in browser. It is also not getting open. ---------------------------------------------------------------------------------------------------------------------------------------- These is the way it executed on terminal: hduser@ubuntu:~$ ssh localhost hduser@localhost's password: Welcome to Ubuntu 12.04.2 LTS * Documentation: https://help.ubuntu.com/ 459 packages can be updated. 209 updates are security updates. Last login: Sun Feb 2 00:28:46 2014 from localhost hduser@ubuntu:~$ /usr/local/hadoop/bin/hadoop namenode -format 14/04/07 01:44:20 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = ubuntu/127.0.0.1 STARTUP_MSG: args = [-format] STARTUP_MSG: version = 1.0.3 STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r 1335192; compiled by 'hortonfo' on Tue May 8 20:31:25 UTC 2012 ************************************************************/ Re-format filesystem in /app/hadoop/tmp/dfs/name ? (Y or N) y Format aborted in /app/hadoop/tmp/dfs/name 14/04/07 01:44:27 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at ubuntu/127.0.0.1 ************************************************************/ hduser@ubuntu:~$ /usr/local/hadoop/bin/start-all.sh starting namenode, logging to /usr/local/hadoop/libexec/../ logs/hadoop-hduser-namenode-ubuntu.out ehduser@localhost's password: hduser@localhost's password: localhost: Permission denied, please try again. localhost: starting datanode, logging to /usr/local/hadoop/libexec/../ logs/hadoop-hduser-datanode-ubuntu.out hduser@ On Sun, Apr 13, 2014 at 9:14 PM, Mahesh Khandewal <mahesh.k....@gmail.com>wrote: > Ekta it may be ssh problem. first check for ssh > > > On Sun, Apr 13, 2014 at 8:46 PM, Ekta Agrawal <ektacloudst...@gmail.com>wrote: > >> I already used the same guide to install hadoop. >> >> If HDFS does not require anything except Hadoop single node >> installation then the installation part is complete. >> >> I tried running bin/hadoop dfs -mkdir /foodir >> bin/hadoop dfsadmin -safemode enter >> >> these commands are giving following exception: >> >> 14/04/07 00:23:09 INFO ipc.Client: Retrying connect to server:localhost/ >> 127.0.0.1:54310. Already tried 9 time(s). >> Bad connection to FS. command aborted. exception: Call to localhost/ >> 127.0.0.1:54310 failed on connection exception: >> java.net.ConnectException: Connection refused >> >> Can somebody help me to understand that why it is happening? >> >> >> >> >> >> On Sun, Apr 13, 2014 at 10:33 AM, Mahesh Khandewal < >> mahesh.k....@gmail.com> wrote: >> >>> I think in hadoop installation only hdfs comes. >>> Like you need to insert script like >>> bin/hadoop start-dfs.sh in $hadoop_home path >>> >>> >>> On Sun, Apr 13, 2014 at 10:27 AM, Ekta Agrawal <ektacloudst...@gmail.com >>> > wrote: >>> >>>> Can anybody suggest any good tutorial to install hdfs and work with >>>> hdfs? >>>> >>>> I installed hadoop on Ubuntu as single node. I can see those service >>>> running. >>>> >>>> But how to install and work with hdfs? Please give some guidance. >>>> >>> >>> >> >
