From b39cad5897ef80244e6496ccd5a6c5ec0cd577b6 Mon Sep 17 00:00:00 2001
From: Luke Meyer <lmeyer@redhat.com>
Date: Thu, 6 Jul 2017 18:01:12 -0400
Subject: ansible.cfg: improve ssh ControlPath

AWS hosts and user names frequently make the default Ansible ControlPath
too long. This prevents ssh persistent connections, significantly
impacting runtime. More detail: https://github.com/ansible/ansible/issues/11536

This config change shortens the ControlPath to make this less likely. It
would be better to change it to the %C hash, as extremely long hostnames
or usernames could still encounter this problem, but that is not yet
available with RHEL's openssh. This at least improves the situation.
---
 ansible.cfg | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'ansible.cfg')

diff --git a/ansible.cfg b/ansible.cfg
index 0c74d63da..14b77ba0f 100644
--- a/ansible.cfg
+++ b/ansible.cfg
@@ -29,3 +29,7 @@ nocows = True
 # Additional ssh options for OpenShift Ansible
 [ssh_connection]
 pipelining = True
+# shorten the ControlPath which is often too long; when it is,
+# ssh connection reuse silently fails, making everything slower.
+control_path = %(directory)s/%%h-%%r
+
-- 
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