Merge branch '16312-s3-signature-v4'

[arvados.git] / doc / admin / upgrading.html.textile.liquid

diff --git a/doc/admin/upgrading.html.textile.liquid b/doc/admin/upgrading.html.textile.liquid
index 070e58983a50fc01c8943d6d29aa46b3d0453361..edd92fa0ea1a117a91d60f3453dc6c3bd146ca3d 100644 (file)
--- a/doc/admin/upgrading.html.textile.liquid
+++ b/doc/admin/upgrading.html.textile.liquid
@@ -44,6 +44,10 @@ The SSO (single sign-on) component is deprecated and will not be supported in fu
 
 After migrating your configuration, uninstall the @arvados-sso-provider@ package.
 
+h3. S3 signatures
+
+Keepstore now uses "V4 signatures":https://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html by default for S3 requests. If you are using Amazon S3, no action is needed; all regions support V4 signatures. If you are using a different S3-compatible service that does not support V4 signatures, add @V2Signature: true@ to your volume driver parameters to preserve the old behavior. See "configuring S3 object storage":{{site.baseurl}}/install/configure-s3-object-storage.html.
+
 h2(#v2_0_0). v2.0.0 (2020-02-07)
 
 "Upgrading from 1.4":#v1_4_1