Cron bash script virtnbdbackup | mail only if error?

[slu-010101]

Hi,

do anyone use virtnbdbackup with a cronjob?
I start virtnbdbackup in my bash script, but every start produce a long and "unreadable" cron mail:

[...]
54%|█████▎ | 7.40G/13.8G [00:12<00:09, 690MB/s] saving disk vda:
54%|█████▍ | 7.50G/13.8G [00:12<00:08, 698MB/s]
saving disk vda: 55%|█████▌ | 7.58G/13.8G [00:12<00:08, 695MB/s] saving disk vda:
56%|█████▌ | 7.67G/13.8G [00:12<00:09, 656MB/s] saving disk vda:
56%|█████▋ | 7.77G/13.8G [00:12<00:09, 660MB/s] saving disk vda:
57%|█████▋ | 7.87G/13.8G [00:13<00:08, 661MB/s] saving disk vda:
58%|█████▊ | 7.95G/13.8G [00:13<00:08, 687MB/s] saving disk vda:
58%|█████▊ | 8.03G/13.8G [00:13<00:08, 712MB/s] saving disk vda:
[...]

Version 2.4 with info log level, I need only a mail from cron if something is wrong/failed.
Or some short overview, backup type (full,inc,...) and amount of data in the backup...

[abbbi]

you can disable progressbar with --noprogress or use --quiet, it disables logging output but will exit with error code accordingly, as such you can script around to send logfile if backup fails.

[slu-010101]

Thanks for the hint, --noprogress make sense.

--quiet is much so quiet for me, I like to see some details* for example:

name of VM
backup type (full,inc,...)
amount of backup data
required backup time

*This is more an enhancement, I know.

[billystaggs]

I just getting started but I am running via crontab and have it setup to email on errors. Here are the relevant lines. Amateur work, but it's working fine:

errstate="false"

virtnbdbackup -d Gibson -l auto -o $bakdir &>> $templog

cat $templog >> $adminlog
if grep -qi 'error' $templog; then
errstate='true'
fi

if error say so

if $errstate = "true"; then
echo 'Status: ERROR! ' >> $adminlog
else
echo 'Status: Successful ' >> $adminlog
fi

mail error to sendto

if $errstate = "true"; then
cat $adminlog | mailx -s "VM Backup Error!" $sendto
else
cat $adminlog | mailx -s "VM Backup Report" $sendto
fi

--
bstaggs

[aroskamp]

You might want to take a look at Cronic

I worked with it for some other projects. Cronic only sends emails, when the internal script writes to stderr or when exitcode != 0.

[slu-010101]

Send a mail only if there is an error is not enough, I need the following information:
VM name
Total saved disk data
Finished successfully

At the moment I received a email every night from the cron job.
My idea is now to write the cron output into a logfile and grep than for this information.

Or do someone has an better idea?