Add ephemeral package with environment variable registration #2857
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Closing in favor of #2874 which generalizes the |
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Change Overview
This PR introduces the
ephemeralpackage meant to handle registering and applying ephemeral pod specific fields.The first use-case was to introduce FIPS related environment variables that need to be set on all ephemeral pods to ensure the crypto backend (OpenSSL in this case) is started with the FIPS provider enabled and fails otherwise.
The registration mechanism leaves it open to register conditional or static environment variables with the appropriate helper functions to help apply them. The only conditional environment variable helper at this point is the
OSEnvVarwhich looks to see if the environment variable is set on the OS and applies it to the ephemeral pod if so. This usage is the main need for setting the FIPS environment variables since they're already present on the parent pod launching the ephemeral pods.All places that used the
kube.PodOptionstype had theephemeral.GlobalEnvVars()function added which adds all registered environment variables to the pod.Two convenience functions
RegisterOSEnvVarandRegisterStaticEnvVarwere added to help facilitate the registering of environment variables from packages which import this.Pull request type
Please check the type of change your PR introduces:
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Test Plan