Hi,
I'm trying to configure my daily tarsnap backup with a systemd timer
unit, but running into an error that I can't really explain myself. I
have a shell script that runs the actual backups, which looks like this:
#!/bin/bash
current_date=$(/bin/date +%F)
/usr/bin/tarsnap --list-archives | /bin/grep -q ${current_date}
GREP_RETURN=$?
if [[ $GREP_RETURN == 0 ]]; then
echo "Archive for ${current_date} already exists. Not archiving again"
exit 1
fi
/usr/bin/tarsnap -c --quiet -f "etc-hostname-${current_date}" /etc
/usr/bin/tarsnap -c --quiet -f "root-hostname-${current_date}" /root
/usr/bin/tarsnap -c --quiet -f "simon-hostname-${current_date}" /home/simon
When running that script on the command line directly, all is well, and
it either creates the archives, or doesn't do so if they already
existed. Now, I've added a systemd service file that should run this
script, which looks like this:
[Unit]
Description=Run tarsnap backups
OnFailure=status-email-root@%n.service
[Service]
ExecStart=/root/tarsnap.sh
Type=oneshot
User=root
For testing services, I started this unit file once, but in the
--list-archives step, tarsnap produces the following error:
● tarsnap-backup.service - Run tarsnap backups
Loaded: loaded (/etc/systemd/system/tarsnap-backup.service; static; vendor
preset: disabled)
Active: failed (Result: exit-code) since Tue 2019-10-08 18:45:27 CEST; 6min
ago
Process: 17247 ExecStart=/root/tarsnap.sh (code=exited, status=1/FAILURE)
Main PID: 17247 (code=exited, status=1/FAILURE)
Okt 08 18:45:26 slevermann.de systemd[1]: Starting Run tarsnap backups...
Okt 08 18:45:27 slevermann.de tarsnap.sh[17247]: tarsnap: fprintf: Broken pipe
Okt 08 18:45:27 slevermann.de tarsnap.sh[17247]: tarsnap: Error listing archives
Okt 08 18:45:27 slevermann.de tarsnap.sh[17247]: tarsnap: Error exit delayed
from previous errors.
Okt 08 18:45:27 slevermann.de systemd[1]: tarsnap-backup.service: Main process
exited, code=exited, status=1/FAILURE
Okt 08 18:45:27 slevermann.de systemd[1]: tarsnap-backup.service: Failed with
result 'exit-code'.
Okt 08 18:45:27 slevermann.de systemd[1]: Failed to start Run tarsnap backups.
Okt 08 18:45:27 slevermann.de systemd[1]: tarsnap-backup.service: Triggering
OnFailure= dependencies.
Does anyone have an idea why the script would execute correctly, but
consistently fail inside the systemd service?
Regards, Simon
