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,
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