Has anyone used AWS spot instances for their worker nodes?

[Saravanan Srinivasan]

 

[Daniel Lynch]

This is supported by the OSS BOSH AWS CPI, but it not a feature supported or enabled in VMWare Tanzu Operations Manager.

https://www.cloudfoundry.org/blog/using-aws-spot-instances-to-cut-the-cost-of-your-bosh-deployments/

 

if this is a feature you are interested in then i would recommend reaching out to your account service representative.

[Saravanan Srinivasan]

Hi Dan,

Thanks responding

yes we have asked our acct rep to create feature request but I was wondering if there is way to use bosh command to specify that in the runtime config.

 

Thanks

[Daniel Lynch]

yes you can manually edit the runtime-config using bosh cli. But opsman will wipe out any manual changes when apply changes is run.

 

https://bosh.io/docs/runtime-config/

[Saravanan Srinivasan]

Hi Dan,

I would like to try the manual option at least for POC, not sure where to start.

Would you be able to help with high level steps?

thank you

Srini

[Daniel Lynch]

looks like the blog post is suggesting you edit the cloud-config and not the runtime-config

https://bosh.io/docs/cloud-config/

 

I have never tested this but it is saying to simply add the "spot_bid_price" to the cloud properties of the instance type you want to enable this on.

 

here is an example for the CPI test case

https://github.com/cloudfoundry/bosh-aws-cpi-release/blob/68cc50959fc01ff7fef175abc9c2aa497466c797/ci/assets/e2e-test-release/cloud-config.yml#L29

 

you would just dump out the cpi, backup, edit, and update the cpi

[Saravanan Srinivasan]

Hi Dan,

I ran update cloud config with new file but nothing changed though I got succeeded.

bosh cloud-config doesn't show the change that It applied.

 

Any idea?

 

Thanks