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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-2809) [HOD] Syslog configuration, syslog-address, does not work in HOD 0.4
Date Fri, 22 Feb 2008 13:10:19 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vinod Kumar Vavilapalli updated HADOOP-2809:
--------------------------------------------

    Attachment: patch_2809.1

   * Removed the print statements that crept in.
   * Fixed in hodring, a bug related to syslog address. This seems not to have been found
earler due to a possible non-usage so far of logging to syslog on hodring.
   * Forcing syslog addresses to be validated, to catch invalid addresses(e.g 'host', 'host:'
etc) on the client side and avoiding failures on compute nodes.
   * Changes done to ringmaster w.r.t the bug had to done in ringmaster and hodcleanup too.
Done that now.
   *  Rest of the changes involve refactoring the code, with respect to the changes mentioned
in the point immediately above.

Tested with ringmaster and hodring pointed to syslogd and syslogng, by allocating nodes, running
hadoop wordcount and deallocating. hodcleanup uses the same log as hodring, so no special
tests here. Currently, logging to syslogd/syslog-ng can be only via udp ports, and not tcp
ports; this is because of the way python built-in sylog module is written.

> [HOD] Syslog configuration, syslog-address, does not work in HOD 0.4
> --------------------------------------------------------------------
>
>                 Key: HADOOP-2809
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2809
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/hod
>    Affects Versions: 0.16.0
>            Reporter: Hemanth Yamijala
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Critical
>             Fix For: 0.16.1
>
>         Attachments: patch_2809, patch_2809.1
>
>
> Specify the parameter syslog-address as host:port in the ringmaster or hodring sections
in a hod configuration file. Run a hod allocation. It fails with error code 5/6. The ringmaster
fails to start. No logs are created.
> The problem seems to be that we are passing in the syslog-address in a format different
from what is expected to the hodLogger object.

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