From bd5a1fcbbc9712d0feeb76a0e2afe2aaa5c01bee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Reis?= <reis@janeasystems.com>
Date: Wed, 3 Oct 2018 03:55:27 +0100
Subject: [PATCH] ansible: increase MaxStartups for jenkins-workspace

This is necessary when many workers running tests try to access the
temp repo to download binaries simultaneously.

PR-URL: https://github.com/nodejs/build/pull/1515
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
---
 ansible/roles/jenkins-workspace/handlers/main.yml |  8 ++++++++
 ansible/roles/jenkins-workspace/tasks/main.yml    |  7 +++++++
 ansible/roles/jenkins-workspace/vars/main.yml     | 13 +++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 ansible/roles/jenkins-workspace/handlers/main.yml
 create mode 100644 ansible/roles/jenkins-workspace/vars/main.yml

diff --git a/ansible/roles/jenkins-workspace/handlers/main.yml b/ansible/roles/jenkins-workspace/handlers/main.yml
new file mode 100644
index 000000000..537ceb6dd
--- /dev/null
+++ b/ansible/roles/jenkins-workspace/handlers/main.yml
@@ -0,0 +1,8 @@
+---
+
+#
+# generic handlers for jenkins-workspace stuff
+#
+
+- name: restart sshd
+  service: name="{{ sshd_service_name }}" state=restarted
diff --git a/ansible/roles/jenkins-workspace/tasks/main.yml b/ansible/roles/jenkins-workspace/tasks/main.yml
index fa4921157..4c034d0c9 100644
--- a/ansible/roles/jenkins-workspace/tasks/main.yml
+++ b/ansible/roles/jenkins-workspace/tasks/main.yml
@@ -80,3 +80,10 @@
     owner: "binary_tmp"
     group: "binary_tmp"
     mode: 0755
+
+- name: Increase the maximum number of connections trying to authenticate
+  notify: restart sshd
+  lineinfile:
+    line: "MaxStartups 100:30:150"
+    dest: "{{ ssh_config }}"
+    regexp: "MaxStartups"
diff --git a/ansible/roles/jenkins-workspace/vars/main.yml b/ansible/roles/jenkins-workspace/vars/main.yml
new file mode 100644
index 000000000..2392b769e
--- /dev/null
+++ b/ansible/roles/jenkins-workspace/vars/main.yml
@@ -0,0 +1,13 @@
+---
+
+#
+# variables for jenkins-workspace
+#
+
+ssh_config: /etc/ssh/sshd_config
+
+sshd_service_map: {
+  'ubuntu1604': 'ssh',
+}
+
+sshd_service_name: "{{ sshd_service_map[os]|default(sshd_service_map[os|stripversion])|default('sshd') }}"