[logback-dev] [JIRA] Resolved: (LBCLASSIC-57) SyslogAppender fails sporadically

Ceki Gulcu (JIRA) noreply-jira at qos.ch
Mon Nov 17 19:01:35 CET 2008

     [ http://jira.qos.ch/browse/LBCLASSIC-57?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ceki Gulcu resolved LBCLASSIC-57.

    Fix Version/s: 0.9.12
       Resolution: Fixed

> SyslogAppender fails sporadically
> ---------------------------------
>                 Key: LBCLASSIC-57
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-57
>             Project: logback-classic
>          Issue Type: Bug
>         Environment: $ uname -a
> Linux ... 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:56:44 EST 2007 x86_64 x86_64 x86_64 GNU/Linux
> $ java -version
> java version "1.6.0_03"
> Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
> Java HotSpot(TM) Server VM (build 1.6.0_03-b05, mixed mode)
> multiprocessor PC box
>            Reporter: Anton Tagunov
>            Assignee: Logback dev list
>             Fix For: 0.9.12
> * several JVM-s per Linux box
> * 5 SyslogAppender-s logging to syslog-ng on
> Once in a while one of the SyslogAppender-s (the busiest one with longest messages) stops logging completely
> Other SyslogAppender-ss continue working fine.
> /usr/sbin/tcpdump has confirmed upd packets reach
> syslog-ng port via 'lo' network interface for remaining appends
> /usr/sbin/tcpdump has confirmed NO udp packets reach
> syslog-ng port via 'lo' network interface for the failing appender
> We have JMX enabled. JConsole does show StatusManager messages.
> There are no error messages there.
> Just the messages emitted during initial logback configuration
> from logback.xml on the classpath.
> We had invoked 'reload()' method via JMX.
> StatusMananger messages observed via JMX show that reload had happened.
> Full re-configuration had happened.
> All 5 SyslogAppenders had been apparently re-created.
> Yet NO udp messages had come from the SyslogAppender
> replacing those which had previously failed.
> Reloading did not help at all.

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