Bug#379898: exim4-base: Could create cronjob to check paniclog

[Andrew Ferrier]

On 2006-07-28 at 14:03 +0200, Marc Haber wrote:

> On Wed, Jul 26, 2006 at 11:12:42AM +0200, Marc Haber wrote:
> > I would be willing to accept a patch to the daily cron job which would
> > yell into syslog, try to send an e-mail (by directly calling
> > /usr/lib/sendmail and reporting a non-zero exit code to syslog and
> > probably somewhere else). A hook would be nice at this place as well,
> > allowing the local admin to have his local reporting method (like a
> > nagios passive service check or writing a warning to /etc/motd) hooked
> > in.
> 
> What do you think about this code:
> 
> log_this() {
>   TEXT="$@"
>   if ! logger -t exim4 -p mail.alert $TEXT; then
>     RET="$?"
>     echo >&2 "ALERT: could not syslog $TEXT, logger return value $RET"
>   fi
> }
> 
> if [ "$WATCH_PANICLOG" = "yes" ]; then
>   if [ -s "/var/log/exim4/paniclog" ]; then
>     if [ -x "/usr/local/lib/exim4/nonzero_paniclog_hook" ]; then
>       /usr/local/lib/exim4/nonzero_paniclog_hook
>     fi
>     log_this "ALERT: exim paniclog /var/log/exim4/paniclog has non-zero size, mail system possibly broken"
>     if ! echo -e "Subject: exim paniclog on $(hostname) has non-zero size\nTo: root\n\nexim paniclog /var/log/exim4/paniclog on $(hostname) has non-zero size, mail system might be broken" | exim4 root; then
>       log_this "PANIC: sending out e-mail warning has failed, exim has non-zero return code"
>     fi
>   fi
> fi
> 
> with WATCH_PANICLOG being preset to "yes"?
> 
> Greetings
> Marc

Looks good to me.

-- 
Andrew Ferrier

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