Interruptions in timer triggered Azure functions

Question

Mykyta Bakirov 21

Hello, I'm facing with the unpredicted interruptions in my Azure function runs...

I'm using Consumption Plan
I deployed using zipdeploy
I'm using function runtime 3
I'm not setting WEBSITE_TIME_ZONE
My CRON setting is */5 * * * *
I expect function to fire every 5th minute
Here are two invocation ids 2a503d8f-4461-4257-8997-62e51ef257ca (fired at 2021-02-08 09:10:00.011) and 01a2131c-cd3b-4604-8764-081ebc92a708 (fired at 2021-02-08 13:25:30.651)

Why is there a 4 hours delay between two mentioned runs?

Please mention that once I open Azure portal my function wakes up and starts working....

Andriy Bilous 12,076 Reputation points MVP Volunteer Moderator

2021-02-08T14:56:50.22+00:00

I would recommend to check runOnStartup and make sure that is set to false

https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-timer?tabs=python#configuration

Your time trigger should have 6 digits - * */5 * * * *
https://arminreiter.com/2017/02/azure-functions-time-trigger-cron-cheat-sheet/
Mykyta Bakirov 21 Reputation points

2021-02-08T15:01:23.57+00:00

Hi Andriy,

thank you for the reply. runOnStartup is set to false, please see screenshot attached
Andriy Bilous 12,076 Reputation points MVP Volunteer Moderator

2021-02-08T15:03:49.99+00:00

Could you please update your time trigger?

Your time trigger should have 6 digits - * */5 * * * *
https://arminreiter.com/2017/02/azure-functions-time-trigger-cron-cheat-sheet/
Mykyta Bakirov 21 Reputation points

2021-02-08T15:09:19.037+00:00

Done, thanks, I'm going to wait for 1 another hour without accessing portal and check.
I will write you back with the results
Mykyta Bakirov 21 Reputation points

2021-02-08T19:13:35.53+00:00

updated CRON seems to fix the problem, thanks a lot!

Answer accepted by question author

0 additional answers

Andriy Bilous 12,076 Reputation points MVP Volunteer Moderator

2021-02-08T14:56:50.22+00:00

I would recommend to check runOnStartup and make sure that is set to false

https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-timer?tabs=python#configuration

Your time trigger should have 6 digits - * */5 * * * *
https://arminreiter.com/2017/02/azure-functions-time-trigger-cron-cheat-sheet/
Mykyta Bakirov 21 Reputation points

2021-02-08T15:01:23.57+00:00

Hi Andriy,

thank you for the reply. runOnStartup is set to false, please see screenshot attached
Andriy Bilous 12,076 Reputation points MVP Volunteer Moderator

2021-02-08T15:03:49.99+00:00

Could you please update your time trigger?

Your time trigger should have 6 digits - * */5 * * * *
https://arminreiter.com/2017/02/azure-functions-time-trigger-cron-cheat-sheet/
Mykyta Bakirov 21 Reputation points

2021-02-08T15:09:19.037+00:00

Done, thanks, I'm going to wait for 1 another hour without accessing portal and check.
I will write you back with the results
Mykyta Bakirov 21 Reputation points

2021-02-08T19:13:35.53+00:00

updated CRON seems to fix the problem, thanks a lot!

Answer 1

Andriy Bilous 12,076 MVP Volunteer Moderator

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