Is cron.yaml supported with custom runtimes?

[Ben Rometsch]

Hi,

I'm running a custom Docker runtime on flexible VMs. I have an cron.yaml file in my root dir that looks like:

cron:

- description: daily summary job

  url: /tasks/test

  schedule: every 1 minutes

It's not being run. Is cron.yaml supported in custom Docker runtimes? The documentation doesn't make any reference. 

Thanks

[Nickolas Daskalou]

Have you updated your crons with something like this?

> appcfg.py update_cron dir_with_cron_file?

See here for more info:

https://cloud.google.com/appengine/docs/standard/python/tools/appcfg-arguments#update_cron

You'll also need to ensure the /tasks/test URL is routed to your Flex environment service, either as the "default" service or via routing rules in dispatch.yaml (which you can upload with appcfg.py also).

Nick

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[Ben Rometsch]

Its a Java/Docker/FlexVM app not a standard Python appengine app...?

On Saturday, 4 March 2017 14:46:41 UTC, Nickolas Daskalou wrote:

Have you updated your crons with something like this?

> appcfg.py update_cron dir_with_cron_file?

See here for more info:

https://cloud.google.com/appengine/docs/standard/python/tools/appcfg-arguments#update_cron

You'll also need to ensure the /tasks/test URL is routed to your Flex environment service, either as the "default" service or via routing rules in dispatch.yaml (which you can upload with appcfg.py also).

Nick

On 05/03/2017 1:19 AM, "Ben Rometsch" <b...@solidstategroup.com> wrote:

Hi,

I'm running a custom Docker runtime on flexible VMs. I have an cron.yaml file in my root dir that looks like:

cron:

- description: daily summary job

  url: /tasks/test

  schedule: every 1 minutes

It's not being run. Is cron.yaml supported in custom Docker runtimes? The documentation doesn't make any reference. 

Thanks

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[Adam (Cloud Platform Support)]

Are you using a base image in your Dockerfile that is an App Engine runtime? If you use a non-App Engine base image, the App Engine Cron Service will not be available.

[Ben Rometsch]

Hmm I tried extending FROM gcr.io/google_appengine/openjdk but it's still not working. Any ideas? How does the cron.yaml get processed included into the Appengine backend?

[Adam (Cloud Platform Support)]

The docs do suggest that cron.yaml should work on the OpenJDK runtime. I'll investigate this more and update the thread once I've finished testing. 

[Adam (Cloud Platform Support)]

I've tested this on an openjdk test app and it works fine, using a cron.yaml similar to yours (hitting an endpoint on the default version/service every 1 minute).

Make sure that you're actually deploying your cron configuration with 'gcloud app deploy /path/to/cron.yaml'. Also make sure that you're targeting the correct version / service. If your endpoint exists on a different version / service that the default you'll need to specify the 'target: ' definition in your cron.yaml.

[Ben Rometsch]

Ah thats what I needed - that works now. Thanks. Feels like the custom/flex VM documentation could do with being fleshed out a bit? 

[Adam (Cloud Platform Support)]

There's another doc which goes into more detail about these steps for the flexible runtime, Scheduling Jobs with cron.yaml.