localhost permission denied
Hello, Please any assistance?? I am using Hadoop for a school project and managed to install it on two computers testing with the wordcount example. However, after stopping Hadoop and restarting the computers (Ubuntu Server 10.10) I am getting the following error: root@localhost's password: localhost: Permission denied, please try again. If I enter the administrative password the same message comes again preventing me from starting Hadoop. What am I getting wrong? Has anyone encountered such error before? I'm using Hadoop 0.20.203. thanks in advance. Kobina.
Re: localhost permission denied
On Tue, 19 Jul 2011 20:47:31 +0100, Kobina Kwarko kobina.kwa...@gmail.com wrote: Hello, Please any assistance?? I am using Hadoop for a school project and managed to install it on two computers testing with the wordcount example. However, after stopping Hadoop and restarting the computers (Ubuntu Server 10.10) I am getting the following error: root@localhost's password: localhost: Permission denied, please try again. Did you set up passwordless ssh for the accounts using hadoop? And why are you running hadoop as root?
RE: localhost permission denied
Your SSH isn't setup properly Setup passphraseless ssh Now check that you can ssh to the localhost without a passphrase: $ ssh localhost If you cannot ssh to localhost without a passphrase, execute the following commands: $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa $ cat ~/.ssh/id_dsa.pub ~/.ssh/authorized_keys Execution Format a new distributed-filesystem: $ bin/hadoop namenode -format Start The hadoop daemons: $ bin/start-all.sh http://hadoop.apache.org/common/docs/r0.17.0/quickstart.html#Setup+passp hraseless cheers - JGS -Original Message- From: Kobina Kwarko [mailto:kobina.kwa...@gmail.com] Sent: Tuesday, July 19, 2011 2:48 PM To: common-user@hadoop.apache.org Subject: localhost permission denied Hello, Please any assistance?? I am using Hadoop for a school project and managed to install it on two computers testing with the wordcount example. However, after stopping Hadoop and restarting the computers (Ubuntu Server 10.10) I am getting the following error: root@localhost's password: localhost: Permission denied, please try again. If I enter the administrative password the same message comes again preventing me from starting Hadoop. What am I getting wrong? Has anyone encountered such error before? I'm using Hadoop 0.20.203. thanks in advance. Kobina.
Re: localhost permission denied
That is the strangest part, I never set it up as as root, this root just came with the error. I have a dedicated hadoop user that I'm using, it worked fine the first time and I tested it with the word count example which produced the expected result but when I restarted the computers this error came. And yes, I used empty password for the ssh as shown on Michael Noll's single hadoop setup page. On 19 July 2011 20:52, John Armstrong john.armstr...@ccri.com wrote: On Tue, 19 Jul 2011 20:47:31 +0100, Kobina Kwarko kobina.kwa...@gmail.com wrote: Hello, Please any assistance?? I am using Hadoop for a school project and managed to install it on two computers testing with the wordcount example. However, after stopping Hadoop and restarting the computers (Ubuntu Server 10.10) I am getting the following error: root@localhost's password: localhost: Permission denied, please try again. Did you set up passwordless ssh for the accounts using hadoop? And why are you running hadoop as root?
Re: localhost permission denied
I can ssh into locahost, even the hadoop user can ssh into localhost without any error when I try starting hadoop it then that error comes. On 19 July 2011 20:54, jeff.schm...@shell.com wrote: Your SSH isn't setup properly Setup passphraseless ssh Now check that you can ssh to the localhost without a passphrase: $ ssh localhost If you cannot ssh to localhost without a passphrase, execute the following commands: $ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa $ cat ~/.ssh/id_dsa.pub ~/.ssh/authorized_keys Execution Format a new distributed-filesystem: $ bin/hadoop namenode -format Start The hadoop daemons: $ bin/start-all.sh http://hadoop.apache.org/common/docs/r0.17.0/quickstart.html#Setup+passp hraseless cheers - JGS -Original Message- From: Kobina Kwarko [mailto:kobina.kwa...@gmail.com] Sent: Tuesday, July 19, 2011 2:48 PM To: common-user@hadoop.apache.org Subject: localhost permission denied Hello, Please any assistance?? I am using Hadoop for a school project and managed to install it on two computers testing with the wordcount example. However, after stopping Hadoop and restarting the computers (Ubuntu Server 10.10) I am getting the following error: root@localhost's password: localhost: Permission denied, please try again. If I enter the administrative password the same message comes again preventing me from starting Hadoop. What am I getting wrong? Has anyone encountered such error before? I'm using Hadoop 0.20.203. thanks in advance. Kobina.
