Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
MapReduce >> mail # user >> starting Daemons remotely, through ssh


Copy link to this message
-
Re: starting Daemons remotely, through ssh - SOLVED
Andy, I noticed you are splitting up your /etc/init.d startup -- we're
new-ish to Hadoop and found that the supplied init.d script doesn't
necessarily stop services properly, so I end up doing it manually.   If
you could share your info that would be great... I can see where they
can be time-delayed in the startup with chkconfig (RHEL).
Thanks.

On 11/6/12 3:07 PM, Kartashov, Andy wrote:
>
> Harsh/Ravi,
>
> I wrote my own scripts to [start|stop|restart]  [hdfs|mapred] daemons.
> The content of the script is
>
> $sudo service /etc/init.d/hadoop-[hdfs-*|mapred-*]
>
> I have no problem starting Daemons locally on each node. I have
> sudo-access granted. I run script and enter password.
>
> I have passwordless ssh enabled. But when I am trying to start slave
> Daemons from NN I get
>
> "<remothsot>:  sudo: sorry, you must have a tty to run sudo".
>
> I just solved this issue by:
>
> a.Modifying slaves.sh script to add --t after ssh "-t" <host-ip> <command>
>
> a1. Someone suggested to:
>
> $sudo sudeors and commenting out Defaults requiretty
>
> But a. worked just fine.
>
> Cheers,
>
> AK47
>
> *From:*Ravi Mutyala [mailto:[EMAIL PROTECTED]]
> *Sent:* Tuesday, November 06, 2012 2:31 PM
> *To:* [EMAIL PROTECTED]
> *Subject:* Re: starting Daemons remotely, through ssh
>
> Andy,
>
> Which specific scripts are these? As far as I know, all daemons on the
> hadoop side can be started with hadoop/hdfs or any non-sudo username.
> You will require passwordless ssh for that user if you are using
> slaves/regionservers configured to start the daemons remotely from the
> NameNode/HBase Master.
>
> On Tue, Nov 6, 2012 at 1:25 PM, Kartashov, Andy
> <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> wrote:
>
> Hadoopers,
>
> How does one start Daemons remotely when scripts normally require root
> user to start them? Do you modify scripts?
>
> Thanks,
>
> NOTICE: This e-mail message and any attachments are confidential,
> subject to copyright and may be privileged. Any unauthorized use,
> copying or disclosure is prohibited. If you are not the intended
> recipient, please delete and contact the sender immediately. Please
> consider the environment before printing this e-mail. AVIS : le
> pr�sent courriel et toute pi�ce jointe qui l'accompagne sont
> confidentiels, prot�g�s par le droit d'auteur et peuvent �tre couverts
> par le secret professionnel. Toute utilisation, copie ou divulgation
> non autoris�e est interdite. Si vous n'�tes pas le destinataire pr�vu
> de ce courriel, supprimez-le et contactez imm�diatement l'exp�diteur.
> Veuillez penser � l'environnement avant d'imprimer le pr�sent courriel
>
> NOTICE: This e-mail message and any attachments are confidential,
> subject to copyright and may be privileged. Any unauthorized use,
> copying or disclosure is prohibited. If you are not the intended
> recipient, please delete and contact the sender immediately. Please
> consider the environment before printing this e-mail. AVIS : le
> pr�sent courriel et toute pi�ce jointe qui l'accompagne sont
> confidentiels, prot�g�s par le droit d'auteur et peuvent �tre couverts
> par le secret professionnel. Toute utilisation, copie ou divulgation
> non autoris�e est interdite. Si vous n'�tes pas le destinataire pr�vu
> de ce courriel, supprimez-le et contactez imm�diatement l'exp�diteur.
> Veuillez penser � l'environnement avant d'imprimer le pr�sent courriel