Add systemd support (thanks, Sven Joachim; closes: #676830).

1 files changed, 20 insertions, 0 deletions

diff --git a/debian/README.Debian b/debian/README.Debian
index 00dfea13d..b9efeb9f5 100644
--- a/debian/README.Debian
+++ b/debian/README.Debian
@@ -201,6 +201,26 @@ If you do this, note that you will need to stop sshd being started in the
 normal way ('rm -f /etc/rc[2345].d/S16ssh') and that you will need to
 restart this sshd manually on upgrades.
 
+systemd socket activation
+-------------------------
+
+If you want to reconfigure systemd to launch sshd using socket activation,
+then you can run:
+
+  systemctl stop ssh.service
+  systemctl start ssh.socket
+
+To make this permanent:
+
+  systemctl disable ssh.service
+  systemctl enable ssh.socket
+
+This may be appropriate in environments where minimal footprint is critical
+(e.g. cloud guests).  Be aware that this bypasses MaxStartups, and systemd's
+MaxConnections cannot quite replace this as it cannot distinguish between
+authenticated and unauthenticated connections; see
+https://bugzilla.redhat.com/show_bug.cgi?id=963268 for more discussion.
+
 -- 
 Matthew Vernon <matthew@debian.org>
 Colin Watson <cjwatson@debian.org>