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adambaack_13393's avatar
adambaack_13393
Icon for Nimbostratus rankNimbostratus
Jun 16, 2016

Just upgraded to 12.1 and getting many 'cron' emails?

I just recently upgraded from 11.3 to 12.1 and am for some reason now getting my email appliance spammed with cron job emails. Any idea how to stop this? Since yesterday I have over 2,000 emails queued because the mail server doesn't recognize the domain name. Seems to happen every minute from the two F5 appliances.

Example of one email:

Sender: root@f5name.fqdn.com
Recipient: postmaster@f5name.fqdn.com
Subject: Cron  /sbin/lsusb -v -d 0451:3410 >/dev/null
cron
email
LTM
security
smtp

2 Replies

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  • IanB's avatar
    IanB
    Icon for Employee rankEmployee
    Jun 19, 2016

    This is bug ID578036. The command acts as a keepalive for the lcd panel, but the lsusb binary was moved, and the cron entry update was missed.

    You can work around it by doing this:

    etc/cron.usbflush

    */1 * * * * /sbin/lsusb -v -d 0451:3410 >/dev/null

    Change this to:

    */1 * * * * /usr/sbin/lsusb -v -d 0451:3410 >/dev/null

    The bug has already been fixed in 12.1.1, but I can not provide an indication on when that version will be released.

  • Martin_Robbins's avatar
    Martin_Robbins
    Icon for Nimbostratus rankNimbostratus
    Nov 28, 2016

    New issue with 12.1.1-HF2, mail err sSMTP messages and cron.hourly on standby unit:

    Subject: Cron  run-parts /etc/cron.hourly
To: 
Cc: 

/etc/cron.hourly/avr_run_scheduled_reports:

Reports scheduling should not run on a machine with a failover state of
inactive or standby at /usr/share/avr/bin/run_scheduled_reports.pl line 23.

    I haven't opened a case but quick fix add a " 2>&1" on to the end of the script:

    cat /etc/cron.hourly/avr_run_scheduled_reports
!/bin/sh
/usr/share/avr/bin/run_scheduled_reports.pl > /dev/null 2>&1