Dear list,
I've set up a HBase server on a dedicated machine. Now, I would like to
be able to access it from a client machine in a typical client mode,
i.e. not running a Hadoop node on it, but only sending requests to the
server.

The server machine is called server1, up and running, and reachable from
the outside, passwordless SSH access _generally_ working. The problem is
that I'm using different user names on the client machine
(carsten@ThinkPad-T410) and on the server (schnober@server1).
Passwordless SSH does work, but how can I configure the username to use?
I have tried to use the User parameter in the ssh_config file so that it
maps to the username applicable on the server, but that leads to error
messages such as the following:

carsten@carsten-ThinkPad-T410:~/hbase-0.94.2$ bin/start-hbase.sh
server1: bash: line 0: cd: /home/carsten/hbase-0.94.2/bin/..: File or
directory not found
server1: bash: /home/carsten/hbase-0.94.2/bin/hbase-daemon.sh: File or
directory not found

When I don't configure SSH to map the username, I'm being prompted for
the password for carsten@server1 when I start hbase on the client.
However, the user 'carsten' doesn't exist on the server machine.

Of course, I could just change usernames on the client or on the server,
but that does not seem to be a solution because I would like to give
database access to different users in production mode. Is there any way
to do so?

Actually, I also wonder whether it is really necessary to run a master
on the local machine or whether there is a way to directly access the
master on the server machine through the HBase shell (or directly
through Java).

The configuration file hbase-site.xml is the following:

<configuration>
  <property>
    <name>hbase.rootdir</name>
    <value>hdfs://server1:9000/hbase</value>
  </property>
  <property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
  </property>
  <property>
    <name>hbase.zookeeper.quorum</name>
    <value>server1</value>
  </property>
</configuration>
Thank you very much!
Carsten

--
Institut fï¿œr Deutsche Sprache | http://www.ids-mannheim.de
Projekt KorAP                 | http://korap.ids-mannheim.de
Tel. +49-(0)621-43740789      | [EMAIL PROTECTED]
Korpusanalyseplattform der nï¿œchsten Generation
Next Generation Corpus Analysis Platform

Hello,

Not sure to understand well.

if zookeeper is running on server1 so

No need for ssh access : just run `hbase shell` on your desktop with the
minimum hbase-site.xml (must be available via $CLASSPATH which is default
as `hbase classpath`) as

<configuration>
  <property>
    <name>hbase.zookeeper.quorum</name>
    <value>server1</value>
  </property>
</configuration>

As you does not seams to use HDFS HA, no need for core-site.xml neither
hdfs-site.xml

http://archive.apache.org/dist/hbase/docs/client_dependencies.html

Regards,

--
Damien

2012/11/14 Carsten Schnober <[EMAIL PROTECTED]>

> Dear list,
> I've set up a HBase server on a dedicated machine. Now, I would like to
> be able to access it from a client machine in a typical client mode,
> i.e. not running a Hadoop node on it, but only sending requests to the
> server.
>
> The server machine is called server1, up and running, and reachable from
> the outside, passwordless SSH access _generally_ working. The problem is
> that I'm using different user names on the client machine
> (carsten@ThinkPad-T410) and on the server (schnober@server1).
> Passwordless SSH does work, but how can I configure the username to use?
> I have tried to use the User parameter in the ssh_config file so that it
> maps to the username applicable on the server, but that leads to error
> messages such as the following:
>
> carsten@carsten-ThinkPad-T410:~/hbase-0.94.2$ bin/start-hbase.sh
> server1: bash: line 0: cd: /home/carsten/hbase-0.94.2/bin/..: File or
> directory not found
> server1: bash: /home/carsten/hbase-0.94.2/bin/hbase-daemon.sh: File or
> directory not found
>
> When I don't configure SSH to map the username, I'm being prompted for
> the password for carsten@server1 when I start hbase on the client.
> However, the user 'carsten' doesn't exist on the server machine.
>
> Of course, I could just change usernames on the client or on the server,
> but that does not seem to be a solution because I would like to give
> database access to different users in production mode. Is there any way
> to do so?
>
> Actually, I also wonder whether it is really necessary to run a master
> on the local machine or whether there is a way to directly access the
> master on the server machine through the HBase shell (or directly
> through Java).
>
> The configuration file hbase-site.xml is the following:
>
> <configuration>
>   <property>
>     <name>hbase.rootdir</name>
>     <value>hdfs://server1:9000/hbase</value>
>   </property>
>   <property>
>     <name>hbase.cluster.distributed</name>
>     <value>true</value>
>   </property>
>   <property>
>     <name>hbase.zookeeper.quorum</name>
>     <value>server1</value>
>   </property>
> </configuration>
>
>
> Thank you very much!
> Carsten
>
> --
> Institut für Deutsche Sprache | http://www.ids-mannheim.de
> Projekt KorAP                 | http://korap.ids-mannheim.de
> Tel. +49-(0)621-43740789      | [EMAIL PROTECTED]
> Korpusanalyseplattform der nächsten Generation
> Next Generation Corpus Analysis Platform
>

--
Damien HARDY
IT Infrastructure Architect

Viadeo - 30 rue de la Victoire - 75009 Paris - France
T : +33 1 80 48 39 73 – F : +33 1 42 93 22 56

Am 14.11.2012 17:04, schrieb Damien Hardy:

Hi Damien,

> if zookeeper is running on server1 so
>
> No need for ssh access : just run `hbase shell` on your desktop with the
> minimum hbase-site.xml (must be available via $CLASSPATH which is default
> as `hbase classpath`) as
>
> [...]
>
> As you does not seams to use HDFS HA, no need for core-site.xml neither
> hdfs-site.xml

This is what I tried at first, with no luck. Turns out, however, that
this was due to mis-configured DNS, so it's working now. Thank you very
much!

Best,
Carsten

--
Institut f�r Deutsche Sprache | http://www.ids-mannheim.de
Projekt KorAP                 | http://korap.ids-mannheim.de
Tel. +49-(0)621-43740789      | [EMAIL PROTECTED]
Korpusanalyseplattform der n�chsten Generation
Next Generation Corpus Analysis Platform

To be correct my remark about HDFS HA is not even relevant for HBase client
just need zk quorum

2012/11/14 Carsten Schnober <[EMAIL PROTECTED]>

> Am 14.11.2012 17:04, schrieb Damien Hardy:
>
> Hi Damien,
>
> > if zookeeper is running on server1 so
> >
> > No need for ssh access : just run `hbase shell` on your desktop with the
> > minimum hbase-site.xml (must be available via $CLASSPATH which is default
> > as `hbase classpath`) as
> >
> > [...]
> >
> > As you does not seams to use HDFS HA, no need for core-site.xml neither
> > hdfs-site.xml
>
> This is what I tried at first, with no luck. Turns out, however, that
> this was due to mis-configured DNS, so it's working now. Thank you very
> much!
>
> Best,
> Carsten
>
> --
> Institut für Deutsche Sprache | http://www.ids-mannheim.de
> Projekt KorAP                 | http://korap.ids-mannheim.de
> Tel. +49-(0)621-43740789      | [EMAIL PROTECTED]
> Korpusanalyseplattform der nächsten Generation
> Next Generation Corpus Analysis Platform
>

--
Damien HARDY
IT Infrastructure Architect

Viadeo - 30 rue de la Victoire - 75009 Paris - France
T : +33 1 80 48 39 73 – F : +33 1 42 93 22 56