Posts by grudolf

grudolf · General matters

Same situation here, we have a VMware ESXi 6.7 server where the cron jobs are executed twice:

2020-10-02T00:05:01Z crond[2099813]: crond: USER root pid 2471658 cmd /bin/hostd-probe.sh ++group=host/vim/vmvisor/hostd-probe/stats/sh
2020-10-02T00:05:01Z crond[2099813]: crond: USER root pid 2471659 cmd /etc/cim/lenovo/refresh.sh
2020-10-02T00:05:01Z crond[2099813]: crond: USER root pid 2471660 cmd /scratch/XSI/XSIBackup-Free/jobs/001 > /dev/null 2>&1
2020-10-02T00:05:01Z crond[2099698]: crond: USER root pid 2471664 cmd /bin/hostd-probe.sh ++group=host/vim/vmvisor/hostd-probe/stats/sh
2020-10-02T00:05:01Z crond[2099698]: crond: USER root pid 2471665 cmd /etc/cim/lenovo/refresh.sh
2020-10-02T00:05:01Z crond[2099698]: crond: USER root pid 2471666 cmd /scratch/XSI/XSIBackup-Free/jobs/001 > /dev/null 2>&1

It's a Lenovo server and another instance of cron is executed as /bin/crond from /etc/init.d/179.lenovo-cronjob or /etc/cim/lenovo/register_ipp_schema:

# ps -c | grep cron
2099698  2099698  crond                                         /bin/crond
2629914  2629914  busybox                                       /usr/lib/vmware/busybox/bin/busybox crond
#  ls -l /bin/crond
lrwxrwxrwx    1 root     root            35 Oct  3  2018 /bin/crond -> /usr/lib/vmware/busybox/bin/busybox

On server restart, the call to cron-init in /etc.rc.local.d/local.sh is needed to set up the contents of cron, but is also starts the busybox crond instance. Even if you kill the busybox crond process, xsibackup --update-cron will restart it.

Lenovo's mechanism to start/restart cron is

     CRONID=$(sed  '1q'    /var/run/crond.pid)
     kill -9  "${CRONID}"
     /bin/crond

but server seems to be reacting also to echo root >/var/spool/cron/crontabs/cron.update as a signal for crontab changes. Perhaps one of those could be used instead?

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#1 Re: General matters » Appear to have two running jobs at once » 2020-10-04 10:35:32

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