From 9033d28435ecfbacc941045ab470e4de3869e4e6 Mon Sep 17 00:00:00 2001
From: Pierre Riteau <pierre@stackhpc.com>
Date: Thu, 29 Apr 2021 11:38:29 +0200
Subject: [PATCH] Replace custom serial loop with throttle

We can use throttle now that we require Ansible 2.9.

Change-Id: I567e83cac4d5e80bd097b30ddefa0cc188118ad2
---
 ansible/roles/ssh-known-host/tasks/main.yml | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/ansible/roles/ssh-known-host/tasks/main.yml b/ansible/roles/ssh-known-host/tasks/main.yml
index 6a16af52c..d752ee42d 100644
--- a/ansible/roles/ssh-known-host/tasks/main.yml
+++ b/ansible/roles/ssh-known-host/tasks/main.yml
@@ -29,7 +29,7 @@
     module: known_hosts
     host: "{{ item[0].item }}"
     key: "{{ item[1] }}"
-  # TODO(priteau): Replace the following with "throttle: 1" once we require
-  # Ansible >= 2.9
-  loop: "{{ query('subelements', ansible_play_batch | map('extract', hostvars, ['keyscan_result', 'results']) | map('first') | list, 'stdout_lines') }}"
-  run_once: True
+  with_subelements:
+    - "{{ keyscan_result.results }}"
+    - stdout_lines
+  throttle: 1