X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/504e09d413026fcac8ac94530134da2fce4dc0f2..3cc81d1201ec9abfe818207c450df62232f5bce9:/doc/admin/upgrading.html.textile.liquid

diff --git a/doc/admin/upgrading.html.textile.liquid b/doc/admin/upgrading.html.textile.liquid
index 23d7120438..edd92fa0ea 100644
--- a/doc/admin/upgrading.html.textile.liquid
+++ b/doc/admin/upgrading.html.textile.liquid
@@ -38,7 +38,15 @@ h2(#master). development master (as of 2020-02-07)
 
 "Upgrading from 2.0.0":#v2_0_0
 
-None in current development master.
+h3. Removing sso-provider
+
+The SSO (single sign-on) component is deprecated and will not be supported in future releases. Existing configurations will continue to work in this release, but you should switch to one of the built-in authentication mechanisms as soon as possible. See "setting up web based login":{{site.baseurl}}/install/setup-login.html for details.
+
+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)