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https://issues.apache.org/jira/browse/FALCON-2025?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Venkat Ranganathan updated FALCON-2025:
---------------------------------------
Description:
For some users, Falcon server fails to perform any operations on workflow
engine after the kerberos credentials expire. Falcon server revalidates the
credentials from keytab on access saying ugi.checkTGTAndReloginFromKeytab(),
but this operation will not work when ugi belongs to proxy user. The relogin
should be done on UserGroupInformation.getLoginUser() for the falcon
credentials to be renewed.
Also, there is a periodic relogin thread which just needed to call the
checkTGTAndRelogin alone instead of trampling Subject.
The error looks as follows.
{code}
falcon instance -list -type process -name procName
log4j:WARN No appenders could be found for logger
(org.apache.hadoop.security.authentication.client.KerberosAuthenticator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
info.
ERROR: Bad
Request;default/org.apache.falcon.FalconWebException::org.apache.falcon.FalconException:
java.io.IOException: Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "machine.test.group/<IP Addr>";
destination host is: "machine.test.group":8020;
{code}
was:
For some users, Falcon server fails to perform any operations on workflow
engine after the kerberos credentials expire. Falcon server periodically
revalidates the credentials from keytab saying
ugi.checkTGTAndReloginFromKeytab(), but this operation will not work when ugi
belongs to proxy user. The relogin should be done on
UserGroupInformation.getLoginUser() for the falcon credentials to be renewed.
The error looks as follows.
{code}
falcon instance -list -type process -name procName
log4j:WARN No appenders could be found for logger
(org.apache.hadoop.security.authentication.client.KerberosAuthenticator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
info.
ERROR: Bad
Request;default/org.apache.falcon.FalconWebException::org.apache.falcon.FalconException:
java.io.IOException: Failed on local exception: java.io.IOException:
javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException:
No valid credentials provided (Mechanism level: Failed to find any Kerberos
tgt)]; Host Details : local host is: "machine.test.group/<IP Addr>";
destination host is: "machine.test.group":8020;
{code}
> Periodic revalidation of kerberos credentials should be done on loginUser
> -------------------------------------------------------------------------
>
> Key: FALCON-2025
> URL: https://issues.apache.org/jira/browse/FALCON-2025
> Project: Falcon
> Issue Type: Bug
> Reporter: Balu Vellanki
> Assignee: Balu Vellanki
> Fix For: trunk, 0.10
>
>
> For some users, Falcon server fails to perform any operations on workflow
> engine after the kerberos credentials expire. Falcon server revalidates the
> credentials from keytab on access saying ugi.checkTGTAndReloginFromKeytab(),
> but this operation will not work when ugi belongs to proxy user. The relogin
> should be done on UserGroupInformation.getLoginUser() for the falcon
> credentials to be renewed.
> Also, there is a periodic relogin thread which just needed to call the
> checkTGTAndRelogin alone instead of trampling Subject.
> The error looks as follows.
> {code}
> falcon instance -list -type process -name procName
> log4j:WARN No appenders could be found for logger
> (org.apache.hadoop.security.authentication.client.KerberosAuthenticator).
> log4j:WARN Please initialize the log4j system properly.
> log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more
> info.
> ERROR: Bad
> Request;default/org.apache.falcon.FalconWebException::org.apache.falcon.FalconException:
> java.io.IOException: Failed on local exception: java.io.IOException:
> javax.security.sasl.SaslException: GSS initiate failed [Caused by
> GSSException: No valid credentials provided (Mechanism level: Failed to find
> any Kerberos tgt)]; Host Details : local host is: "machine.test.group/<IP
> Addr>"; destination host is: "machine.test.group":8020;
> {code}
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