launcher: Change retry policy to hourly and add jitter to refresh time #266
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We want the retry to occur ~hourly (with jitter), as this will match the normal refreshed requests. This allows the launcher to provide a token even with long service outages.
jessieqliu
approved these changes
Nov 23, 2022
jkl73
approved these changes
Nov 23, 2022
This allows smearing of requests in the event many clients come online at similar times after an outage. Without this, load on the service side would be less balanced over time. Also, test next refresh time is always < expiration.
michael-pregman
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Nov 23, 2022
alexmwu
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Breaking Changes: New Features: Add IsHardened in launch spec: google#244 Add container logging redirect policy: google#249 Add SEV-SNP attestation support: google#240 Integrity-protect stateful partition on CS image: google#251 Retry launcher OIDC token refresh with backoff: google#261 Change restart policy behavior to reboot: google#260 Add ability to GetGCEInstanceInfo from a certificate: google#267 Bug Fixes: COS event log: require CEL events to use PCR13, add a launch separator, and don't skip unknown events: google#246 Measure LaunchSeparator event: google#247 Skip unallocated PCR selections when reading all PCRs: google#258 Remove gRPC client and use of insecure credentials: google#262 Fix server.VerifyAttestation proto merging(google#263) and defer of os.Exit(google#264): google#265 Other Changes: Add fake verifier client: google#234 Update CI Go Version to 1.19: google#241 Add launcher integration testing support: google#255 Test multi-writer PD creation disabled: google#256 Update go-sev-guest dependency to v0.2.6: google#259 Change OIDC retry policy to hourly and add jitter to refresh time: google#266 Add wrapper cloudbuild workflow to trigger image build and testing: google#269
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alexmwu
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Dec 16, 2022
Breaking Changes: New Features: Add IsHardened in launch spec: #244 Add container logging redirect policy: #249 Add SEV-SNP attestation support: #240 Integrity-protect stateful partition on CS image: #251 Retry launcher OIDC token refresh with backoff: #261 Change restart policy behavior to reboot: #260 Add ability to GetGCEInstanceInfo from a certificate: #267 Bug Fixes: COS event log: require CEL events to use PCR13, add a launch separator, and don't skip unknown events: #246 Measure LaunchSeparator event: #247 Skip unallocated PCR selections when reading all PCRs: #258 Remove gRPC client and use of insecure credentials: #262 Fix server.VerifyAttestation proto merging(#263) and defer of os.Exit(#264): #265 Other Changes: Add fake verifier client: #234 Update CI Go Version to 1.19: #241 Add launcher integration testing support: #255 Test multi-writer PD creation disabled: #256 Update go-sev-guest dependency to v0.2.6: #259 Change OIDC retry policy to hourly and add jitter to refresh time: #266 Add wrapper cloudbuild workflow to trigger image build and testing: #269
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We want the retry to occur ~hourly (with jitter), as this will match the normal refreshed requests. This allows the launcher to provide a token even with long service outages.
Also, jitter on the refresh duration allows smearing of requests in the event many clients come online at similar times after an outage. Without this, load on the service side would be less balanced over time.