h3. S3 volume IAMRole configuration entry has been removed
The @Volumes.*.DriverParameters.IAMRole@ configuration entry for S3 volumes has been removed. You should remove it from your @/etc/arvados/config.yml@ file to avoid warnings when services start up. As before, if @AccessKeyID@ and @SecretAccessKey@ are blank, keepstore will retrieve IAM role credentials from instance metadata. Previously, documentation indicated that keepstore would refuse to use the IAM credentials if @IAMRole@ was specified and did not match the instance metadata, but that check has not been working for some time.
h3. S3 volume IAMRole configuration entry has been removed
The @Volumes.*.DriverParameters.IAMRole@ configuration entry for S3 volumes has been removed. You should remove it from your @/etc/arvados/config.yml@ file to avoid warnings when services start up. As before, if @AccessKeyID@ and @SecretAccessKey@ are blank, keepstore will retrieve IAM role credentials from instance metadata. Previously, documentation indicated that keepstore would refuse to use the IAM credentials if @IAMRole@ was specified and did not match the instance metadata, but that check has not been working for some time.