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-rw-r--r--doc/administration/operations/fast_ssh_key_lookup.md6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/administration/operations/fast_ssh_key_lookup.md b/doc/administration/operations/fast_ssh_key_lookup.md
index b86168f935a..0c32afe9046 100644
--- a/doc/administration/operations/fast_ssh_key_lookup.md
+++ b/doc/administration/operations/fast_ssh_key_lookup.md
@@ -1,5 +1,11 @@
# Fast lookup of authorized SSH keys in the database
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/1631) in
+> [GitLab Enterprise Edition Standard](https://about.gitlab.com/gitlab-ee) 9.3.
+>
+> [Available in](https://gitlab.com/gitlab-org/gitlab-ee/issues/3953) GitLab
+> Community Edition 10.4.
+
Regular SSH operations become slow as the number of users grows because OpenSSH
searches for a key to authorize a user via a linear search. In the worst case,
such as when the user is not authorized to access GitLab, OpenSSH will scan the