Apps cronjob runs multiple times even though it's not supposed to

[msbt]

I have a Managed WordPress app which I use for weekly disk usage stats. The cronjob looks like this:

0 14 * * SUN export root_space=$(df -h | grep '/$'); export root_usage=$(echo $root_space | awk '{ print int($5) }'); curl -H "Authorization: Bearer xyz" -H "Title: Weekly disk usage report" -H "Priority: low" -H "Tags: loudspeaker" -X POST --data "Servername disk usage: $root_usage%" https://ntfy.example.com/df-alert >/dev/null 2>&1

I'm using the same thing on a few more servers and on those it is only sent only once, but this specific server usually runs twice, today even three times in a row. Where do I check if there are duplicates somewhere? Is there a global crontab which collects the apps' jobs?

App logs look like this:

Aug 16 14:00:10 => Run cron job
Aug 16 14:00:11 Success: Executed a total of 0 cron events.
Aug 16 14:00:19 {"id":"xxx","time":1786881619,"expires":1786924819,"event":"message","topic":"df-alert","title":"..."
Aug 16 14:00:20 - - - [16/Aug/2026:12:00:20 +0000] "GET /wp-includes/version.php HTTP/1.1" 200 - "-" "Mozilla (CloudronHealth)"
Aug 16 14:00:30 - - - [16/Aug/2026:12:00:30 +0000] "GET /wp-includes/version.php HTTP/1.1" 200 - "-" "Mozilla (CloudronHealth)"
Aug 16 14:00:37 {"id":"yyy","time":1786881637,"expires":1786924837,"event":"message","topic":"df-alert","title":"..."
Aug 16 14:00:40 - - - [16/Aug/2026:12:00:40 +0000] "GET /wp-includes/version.php HTTP/1.1" 200 - "-" "Mozilla (CloudronHealth)"
Aug 16 14:00:43 {"id":"zzz","time":1786881643,"expires":1786924843,"event":"message","topic":"df-alert","title":"..."
Aug 16 14:00:50 - - - [16/Aug/2026:12:00:50 +0000] "GET /wp-includes/version.php HTTP/1.1" 200 - "-" "Mozilla (CloudronHealth)"

No idea why they run more than once and with that much delay in between. Any suggestions on where to check?

[james]

Hello @msbt
Just to make sure, you are using the cron settings from the Cloudron dashboard, correct?

[msbt]

@james exactly, app configuration -> cron. is there a place where all those cronjobs are collected to see if there are duplicate entries?

[james]

Hello @msbt
These are stored in the box database.
Example:

mysql -h 127.0.0.1 -uroot -ppassword box -e "
SELECT id, crontab from apps WHERE id='26514c2d-e91a-4dbb-bd5a-f862dcb4a6d2'\G"
mysql: [Warning] Using a password on the command line interface can be insecure.
*************************** 1. row ***************************
     id: 26514c2d-e91a-4dbb-bd5a-f862dcb4a6d2
crontab: # +------------------------ minute (0 - 59)
# |    +------------------- hour (0 - 23)
# |    |    +-------------- day of month (1 - 31)
# |    |    |    +--------- month (1 - 12)
# |    |    |    |    +---- day of week (0 - 6) (Sunday=0 or 7)
# |    |    |    |    |
# *    *    *    *    * command to be executed
*/5    *    *    *    * "/app/data/public/tcl/get_all_members"

[msbt]

@james thanks, looks okay in there. I'll do some more investigating, I just set a different time and it got only triggered once. Any idea why it might be doing it multiple times at 14:00?

[james]

Hello @msbt
No idea yet.