From e727bd52f1962556fe40ba673abebef312e0e2f3 Mon Sep 17 00:00:00 2001
From: Matthew Mosesohn <mmosesohn@mirantis.com>
Date: Mon, 8 Aug 2016 13:59:20 +0300
Subject: [PATCH] Add option to disable ipv6 dns lookup
New variable disable_ipv6_dns in kubernetes/preinstall.
---
roles/kubernetes/preinstall/defaults/main.yml | 4 ++++
roles/kubernetes/preinstall/tasks/main.yml | 8 ++++++++
2 files changed, 12 insertions(+)
diff --git a/roles/kubernetes/preinstall/defaults/main.yml b/roles/kubernetes/preinstall/defaults/main.yml
index 1fb537b89..f419a091c 100644
--- a/roles/kubernetes/preinstall/defaults/main.yml
+++ b/roles/kubernetes/preinstall/defaults/main.yml
@@ -29,6 +29,10 @@ common_required_pkgs:
- rsync
- bash-completion
+# Set to true if your network does not support IPv6
+# This maybe necessary for pulling Docker images from
+# GCE docker repository
+disable_ipv6_dns: false
# For the openstack integration kubelet will need credentials to access
diff --git a/roles/kubernetes/preinstall/tasks/main.yml b/roles/kubernetes/preinstall/tasks/main.yml
index 442fadfd7..dcc925627 100644
--- a/roles/kubernetes/preinstall/tasks/main.yml
+++ b/roles/kubernetes/preinstall/tasks/main.yml
@@ -97,6 +97,14 @@
with_items: "{{required_pkgs | default([]) | union(common_required_pkgs|default([]))}}"
when: ansible_os_family != "CoreOS"
+- name: Disable IPv6 DNS lookup
+ lineinfile:
+ dest: /etc/gai.conf
+ line: "precedence ::ffff:0:0/96 100"
+ state: present
+ backup: yes
+ when: disable_ipv6_dns and ansible_os_family != "CoreOS"
+
# Todo : selinux configuration
- name: Set selinux policy to permissive
selinux: policy=targeted state=permissive
--
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