Aws spot ondemand fallback #915
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Hey mrdavidlaing! Thanks for submitting this pull request! I'm here to inform the recipients of the pull request that you've already signed the CLA. |
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Closing this PR, content merged in cloudfoundry-incubator/bosh-aws-cpi-release |
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This PR is a WIP, and should only be considered for merging after #888
Occasionally the AWS spot price will spike for a number of hours, causing the resurrection of BOSH deployed spot jobs to fail.
The PR implements a simple but effective way to favor uptime over cost savings - have BOSH "fallback" to creating a regular on-demand instance when spot creation failed AND the
spot_ondemand_fallbackmanifest property is set totrue.This enables resurrection to succeed during the spot price spike. At the end of the spot price spike, the operator can manually terminate the on-demand nodes, and the BOSH's will resurrect them as spot instances again.