Re: [Astlinux-users] Stopping logging of Crontab

[Michael K. <mic...@ip...>]

Thanks Lonnie

Very much appreciated.

Regards
Michael Knill


From: Lonnie Abelbeck <li...@lo...>
Date: Friday, 29 September 2023 at 4:43 am
To: AstLinux Users Mailing List <ast...@li...>
Subject: Re: [Astlinux-users] Stopping logging of Crontab
Hi Michael,

Looking at the /etc/init.d/crond init script, here [1]

If the line "crond" was changed to "crond -L /var/log/crond.log" it would disable syslog and use that file ... but may need rotating if it gets large.

If the line "crond" was changed to "crond -L /dev/null" it would disable syslog and disable logging (ie. to /dev/null).

BTW, I manually tested both cases to be certain.

Lonnie

[1] https://github.com/astlinux-project/astlinux/blob/09e87eff8bca82bf4afab8dbe09560737dd80d5c/project/astlinux/target_skeleton/etc/init.d/crond#L38



> On Sep 27, 2023, at 8:01 PM, Michael Knill <mic...@ip...> wrote:
>
> Hi group
>
> Replying to this email again. I do understand below but just wondering if there is any way to turn off Cron logging totally or send to a separate log file?
>
> Regards
> Michael Knill
>
>
> From: Lonnie Abelbeck <li...@lo...>
> Date: Friday, 31 March 2023 at 1:01 am
> To: AstLinux Users Mailing List <ast...@li...>
> Subject: Re: [Astlinux-users] Stopping logging of Crontab
>
> Hi Michael,
>
> The (busybox) crond daemon has a syslog level setting which defaults to 8, the least verbose log level.  So no help there.
>
> Using the filter for the Status Tab, is a reasonable idea.
>
>
> Personally, when executing shell commands on a regular interval of seconds/minutes, I prefer to use a bash shell script and the sleep builtin. (Using the sleep builtin keeps from spawning a new process whenever 'sleep' is called).
>
> The simplest example of this is the 'msmtpqueue' bash script [1]
>
> Basic code setup and loop:
> --
> #!/bin/bash
>
> LOCKFILE="/var/lock/foobar.lock"
>
> # Robust 'bash' method of creating/testing for a lockfile
> if ! ( set -o noclobber; echo "$$" > "$LOCKFILE" ) 2>/dev/null; then
>   echo "foobar: already running, lockfile \"$LOCKFILE\" exists, process id: $(cat "$LOCKFILE")."
>   return 9
> fi
>
> # Load 'sleep' builtin if it exists
> if [ -f /usr/lib/bash/sleep ]; then
>   enable -f /usr/lib/bash/sleep sleep
> fi
>
> #seconds to wait
> wait=300
>
> trap 'rm -f "$LOCKFILE"; exit $?' INT TERM EXIT
>
> while true; do
>   # do stuff
>
>   sleep $wait
> done
>
> rm -f "$LOCKFILE"
> trap - INT TERM EXIT
> --
>
> Look at the actual code [1] for finer details.  Another fairly simple example, asterisk-sip-monitor [2] which adds a PID file that can be removed to exit the script.
>
> Lonnie
>
> [1] https://github.com/astlinux-project/astlinux/blob/master/package/msmtp/msmtpqueue.sh
>
> [2] https://github.com/astlinux-project/astlinux/blob/master/package/asterisk/asterisk-sip-monitor
>
>
>
>
>
> > On Mar 29, 2023, at 11:39 PM, Michael Knill <mic...@ip...> wrote:
> >
> > Short of putting in a filter for the Status Tab, is there any way to stop Crontab logging to Syslog.
> > I now have a process that is run every 10 minutes and its annoying that it logs to Syslog each time.
> >
> > Regards
> >
> > Michael Knill
> > Managing Director
> >
> > D: +61 2 6189 1360
> > P: +61 2 6140 4656
> > E: mic...@ip...
> > W: ipcsolutions.com.au
> >
>
>
>
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