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Full Discussion: Need help with warn messages in sys logs
Operating Systems AIX Need help with warn messages in sys logs Post 302938061 by agent.kgb on Wednesday 11th of March 2015 03:01:06 PM
Old 03-11-2015
there are two types of cores in conjunction with Java:

- "normal" AIX cores
- Java cores and heapdumps

fullcore and ulimit regulates "normal" AIX cores, not Java cores. If a java process dumps, it can produce just java dump and no AIX core file. In this case it doesn't matter if fullcore=yes and ulimit -с = unlimited. But it can also be the other case - the process (because it is AIX process) dumps a core and Java has no idea about this dump and doesn't write its own dump. In this case it is better to have fullcore=yes and ulimit -c = unlimited.

But before setting ulimit (or better - chuser core=-1 username ;-) ask your AIX administrator. In many environments it is forbidden to produce full core dumps because of security and because the filesystem can be overflowed with dumps, if you forget to remove them.
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LEARN ABOUT SUNOS

warn.conf

warn.conf(4)							   File Formats 						      warn.conf(4)

NAME

       warn.conf - Kerberos warning configuration file

SYNOPSIS

       /etc/krb5/warn.conf

DESCRIPTION

       The  warn.conf file contains configuration information specifying how users will be warned by the ktkt_warnd daemon about ticket expiration
       on a Kerberos client. Credential expiration warnings are sent, by means of syslog, to auth.notice. All other warning messages are  sent	to
       daemon.notice.

       Each  Kerberos  client host must have a warn.conf file in order for users on that host to get Kerberos warnings from the client. Entries in
       the warn.conf file must have the following format:

       principal syslog | terminal | mail time [email_address]

       principal       Specifies the principal name to be warned. The asterisk (*) wildcard can be used to specify groups of principals.

       syslog	       Sends the warnings to the system's syslog. Depending on the /etc/syslog.conf  file,  syslog  entries  are  written  to  the
		       /var/adm/messages file and/or displayed on the terminal.

       terminal        Sends the warnings to display on the terminal.

       mail	       Sends the warnings as email to the address specified by email_address.

       time	       Specifies  how  much  time before the TGT expires when a warning should be sent. The default time value is seconds, but you
		       can specify h (hours) and m (minutes) after the number to specify other time values.

       email_address   Specifies the email address at which to send the warnings. This field must be specified only with the mail field.

EXAMPLES

       Example 1: Specifying warnings

       The following warn.conf entry

       * syslog 5m

       specifies that warnings will be sent to the syslog five minutes before the expiration of the TGT for all principals. The form of  the  mes-
       sage is:

       jdb@ACME.COM: your kerberos credentials expire in 5 minutes

FILES

       /usr/lib/krb5/ktkt_warnd        Kerberos warning daemon

SEE ALSO

       ktkt_warnd(1M), syslog.conf(4), SEAM(5)

SunOS 5.10							    22 Apr 2003 						      warn.conf(4)
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