openstack/puppet-ironic
Code Issues Proposed changes

Add support to set option:mtu in inspector dnsmasq

Browse Source 
It should be possible to configure the DHCP server to
provide the mtu option for inspection subnets.

This uses the dhcp-option-force so that the option is
provided also when the client does not ask for it.
According to dnsmasq manual page this is sometimes
required when sending options to PXELINUX.

Closes-Bug: #1845487
Change-Id: Ic95dbf1867fb5397f1b6d8f23466910a97051cb6
This commit is contained in:
Harald Jensås 2019-09-26 13:40:08 +02:00
parent b70efb17de
commit 03550bc8c8
5 changed files with 33 additions and 3 deletions
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2
manifests/inspector.pp
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@ -147,7 +147,7 @@
# key. Assigning multiple tagged subnets allow dnsmasq to serve dhcp request
# that came in via dhcp relay/helper.
# Example:
# [{'ip_range' => '192.168.0.100,192.168.0.120'},
# [{'ip_range' => '192.168.0.100,192.168.0.120', 'mtu' => '1500'},
# {'tag' => 'subnet1',
# 'ip_range' => '192.168.1.100,192.168.1.200',
# 'netmask' => '255.255.255.0',

8
releasenotes/notes/allow-passing-mtu-option-inspector-dnsmasq-cee585c2ac49dbc8.yaml Normal file
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@ -0,0 +1,8 @@
---
fixes:
- |
It was not possible to configre Ironic Inspector DHCP (dnsmasq) service to
provide the MTU option. This caused inspection to fail when operating on
a network with <1500 bytes MTU. See bug: `1845487
<https://bugs.launchpad.net/puppet-ironic/+bug/1845487>`_.

12
spec/classes/ironic_inspector_spec.rb
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@ -46,11 +46,13 @@ describe 'ironic::inspector' do
:swift_tenant_name => 'services',
:swift_auth_url => 'http://127.0.0.1:5000/v3',
:dnsmasq_ip_subnets => [{ 'ip_range' =>
'192.168.0.100,192.168.0.120' },
'192.168.0.100,192.168.0.120',
'mtu' => '1350'},
{ 'tag' => 'subnet1',
'ip_range' => '192.168.1.100,192.168.1.200',
'netmask' => '255.255.255.0',
'gateway' => '192.168.1.254' },
'gateway' => '192.168.1.254',
'mtu' => '1350'},
{ 'tag' => 'subnet2',
'ip_range' => '192.168.2.100,192.168.2.200',
'netmask' => '255.255.255.0',
@ -153,12 +155,18 @@ describe 'ironic::inspector' do
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-range=192.168.0.100,192.168.0.120,10m/
)
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-option-force=option:mtu,1350/
)
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-range=set:subnet1,192.168.1.100,192.168.1.200,255.255.255.0,10m/
)
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-option=tag:subnet1,option:router,192.168.1.254/
)
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-option-force=tag:subnet1,option:mtu,1350/
)
is_expected.to contain_file('/etc/ironic-inspector/dnsmasq.conf').with_content(
/dhcp-range=set:subnet2,192.168.2.100,192.168.2.200,255.255.255.0,10m/
)

7
templates/inspector_dnsmasq_http.erb
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@ -19,6 +19,13 @@ dhcp-option=tag:<%= s['tag'] -%>,option:router,<%= s['gateway'] %>
dhcp-option=option:router,<%= s['gateway'] %>
<% end -%>
<% end -%>
<% if s['mtu'] -%>
<% if s['tag'] -%>
dhcp-option-force=tag:<%= s['tag'] -%>,option:mtu,<%= s['mtu'] %>
<% else -%>
dhcp-option-force=option:mtu,<%= s['mtu'] %>
<% end -%>
<% end -%>
<% if s['classless_static_routes'] -%>
<%- @_routes = [] -%>
<%- s['classless_static_routes'].each do |route| -%>

7
templates/inspector_dnsmasq_tftp.erb
View File

@ -19,6 +19,13 @@ dhcp-option=tag:<%= s['tag'] -%>,option:router,<%= s['gateway'] %>
dhcp-option=option:router,<%= s['gateway'] %>
<% end -%>
<% end -%>
<% if s['mtu'] -%>
<% if s['tag'] -%>
dhcp-option-force=tag:<%= s['tag'] -%>,option:mtu,<%= s['mtu'] %>
<% else -%>
dhcp-option-force=option:mtu,<%= s['mtu'] %>
<% end -%>
<% end -%>
<% if s['classless_static_routes'] -%>
<%- @_routes = [] -%>
<%- s['classless_static_routes'].each do |route| -%>