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authorEmilien Macchi <emilien@redhat.com>2016-02-29 20:04:34 -0500
committerEmilien Macchi <emilien@redhat.com>2016-04-19 14:36:38 +0000
commitf9c33aeb81a9c89228ced75add1282e35824d49d (patch)
treeafddc968ffc70c841cf961c6bd8c06a27853b2b1 /lib/puppet/parser
parent33c6afe89ade18f3017158bddf60c1e51937583e (diff)
IPv6 dual-stack support
TL;DR: If keystone_public_api_vip and/or public_virtual_ip is an array of IPs, HAproxy will be configured to listen on all IPs that are given in the arrays. It allows to specify an array for keystone_public_api_vip and/or public_virtual_ip where one IP is v4 and another one is v6. HAproxy will configured to listen on both and redirect the traffic to the IPv6 network (Dual-Stack). Implementation & background: HAproxy requires binding options as an hash where each IP contains an array of binding options. TripleO does not support Puppet Parser [1] (yet) so we can't manipulate data iterations inside the manifests. This patch creates a custom function, called list_to_hash. Example: keystone_vips = ['192.168.0.1:5000', '192.168.0.2:5000'] $keystone_bind_opts = ['transparent'] Using this function: $keystone_vips_hash = list_to_hash($keystone_vips, $keystone_bind_opts) Would return: $keystone_vips_hash = { '192.168.0.1:5000' => ['transparent'], '192.168.0.2:5000' => ['transparent'], } This function will help us in loadbalancer.pp to construct binding options in dynamic way. It's backward compatible, so you don't have to give an array. But if you do, multiple binding will be configured in HAproxy and you'll also be able to deploy IPv6 Dual-Stack. [1] https://docs.puppetlabs.com/puppet/latest/reference/lang_iteration.html Change-Id: I003b6d7d171652654745861d4231882f9e0d373e
Diffstat (limited to 'lib/puppet/parser')
-rw-r--r--lib/puppet/parser/functions/list_to_hash.rb31
1 files changed, 31 insertions, 0 deletions
diff --git a/lib/puppet/parser/functions/list_to_hash.rb b/lib/puppet/parser/functions/list_to_hash.rb
new file mode 100644
index 0000000..c6449a9
--- /dev/null
+++ b/lib/puppet/parser/functions/list_to_hash.rb
@@ -0,0 +1,31 @@
+# This function is an hack because we are not enabling Puppet parser
+# that would allow us to manipulate data iterations directly in manifests.
+#
+# Example:
+# keystone_vips = ['192.168.0.1:5000', '192.168.0.2:5000']
+# $keystone_bind_opts = ['transparent']
+#
+# Using this function:
+# $keystone_vips_hash = list_to_hash($keystone_vips, $keystone_bind_opts)
+#
+# Would return:
+# $keystone_vips_hash = {
+# '192.168.0.1:5000' => ['transparent'],
+# '192.168.0.2:5000' => ['transparent'],
+# }
+#
+# Disclaimer: this function is an hack and will disappear once TripleO enable
+# Puppet parser.
+#
+
+module Puppet::Parser::Functions
+ newfunction(:list_to_hash, :type => :rvalue, :doc => <<-EOS
+ This function returns an hash from a specified array
+ EOS
+ ) do |argv|
+ arr1 = argv[0]
+ arr2 = argv[1]
+ h = arr1.each_with_object({}) { |v,h| h[v] = arr2 }
+ return h
+ end
+end