yahoo-eng-team team mailing list archive

Thread
Date
[Bug 1705804] [NEW] sysconfig renderer should render DNSx= and GATEWAY= lines

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: rc556677 <rc556677@xxxxxxxxxxx>
Date: Sat, 22 Jul 2017 05:10:52 -0000
Reply-to: Bug 1705804 <1705804@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

cloud-init 0.7.9 on CentOS and Fedora are semi-broken because the sysconfig renderer does not render
DNS1=...
GATEWAY=...

into /etc/sysconfig/network-scripts/ifcfg-eth0. The VM has no default
gateway or nameservers.

This is using NoCloud ENI source -> network_config -> network_state ->
sysconfig renderer

>From this ENI source:
auto eth0
iface eth0 inet static
address 192.168.125.154
netmask 255.255.255.0
gateway 192.168.125.1
dns-nameservers 192.168.125.1 8.8.8.8 8.8.4.4 1.2.3.4
dns-search example.com foo.biz bar.info foobar.toomany


Actual result:
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=static
DEVICE=eth0
IPADDR=192.168.125.154
NETMASK=255.255.255.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no

Expected result:
# Created by cloud-init on instance boot automatically, do not edit.
#
BOOTPROTO=static
DEVICE=eth0
DNS1=192.168.125.1
DNS2=8.8.8.8
DNS3=8.8.4.4
GATEWAY=192.168.125.1
HELLO=world
IPADDR=192.168.125.154
NETMASK=255.255.255.0
ONBOOT=yes
SEARCH="example.com foo.biz info.bar"
TYPE=Ethernet
USERCTL=no


The network_config object:
{'version': 1, 'config': [{'type': 'physical', 'name': 'eth0', 'subnets': [{'_orig_eni_name': 'eth0', 'type': 'static', 'control': 'auto', 'address': '192.168.125.154', 'netmask': '255.255.255.0', 'gateway': '192.168.125.1', 'dns_nameservers': ['192.168.125.1', '8.8.8.8', '8.8.4.4', '1.2.3.4'], 'dns_search': ['example.com', 'foo.biz', 'bar.info', 'foobar.toomany']}]}]}

The network_state object:

!!python/object:cloudinit.net.network_state.NetworkState
_network_state:
    dns:
        nameservers: []
        search: []
    interfaces:
        eth0:
            address: null
            gateway: null
            inet: inet
            mac_address: null
            mode: manual
            mtu: null
            name: eth0
            subnets:
            -   _orig_eni_name: eth0
                address: 192.168.125.154
                control: auto
                dns_nameservers:
                - 192.168.125.1
                - 8.8.8.8
                - 8.8.4.4
                - 1.2.3.4
                dns_search:
                - example.com
                - foo.biz
                - bar.info
                - foobar.toomany
                gateway: 192.168.125.1
                netmask: 255.255.255.0
                type: static
            type: physical
    routes: []
_version: 1

** Affects: cloud-init
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/1705804

Title:
  sysconfig renderer should render DNSx= and GATEWAY= lines

Status in cloud-init:
  New

Bug description:
  cloud-init 0.7.9 on CentOS and Fedora are semi-broken because the sysconfig renderer does not render
  DNS1=...
  GATEWAY=...

  into /etc/sysconfig/network-scripts/ifcfg-eth0. The VM has no default
  gateway or nameservers.

  This is using NoCloud ENI source -> network_config -> network_state ->
  sysconfig renderer

  From this ENI source:
  auto eth0
  iface eth0 inet static
  address 192.168.125.154
  netmask 255.255.255.0
  gateway 192.168.125.1
  dns-nameservers 192.168.125.1 8.8.8.8 8.8.4.4 1.2.3.4
  dns-search example.com foo.biz bar.info foobar.toomany

  
  Actual result:
  # Created by cloud-init on instance boot automatically, do not edit.
  #
  BOOTPROTO=static
  DEVICE=eth0
  IPADDR=192.168.125.154
  NETMASK=255.255.255.0
  ONBOOT=yes
  TYPE=Ethernet
  USERCTL=no

  Expected result:
  # Created by cloud-init on instance boot automatically, do not edit.
  #
  BOOTPROTO=static
  DEVICE=eth0
  DNS1=192.168.125.1
  DNS2=8.8.8.8
  DNS3=8.8.4.4
  GATEWAY=192.168.125.1
  HELLO=world
  IPADDR=192.168.125.154
  NETMASK=255.255.255.0
  ONBOOT=yes
  SEARCH="example.com foo.biz info.bar"
  TYPE=Ethernet
  USERCTL=no

  
  The network_config object:
  {'version': 1, 'config': [{'type': 'physical', 'name': 'eth0', 'subnets': [{'_orig_eni_name': 'eth0', 'type': 'static', 'control': 'auto', 'address': '192.168.125.154', 'netmask': '255.255.255.0', 'gateway': '192.168.125.1', 'dns_nameservers': ['192.168.125.1', '8.8.8.8', '8.8.4.4', '1.2.3.4'], 'dns_search': ['example.com', 'foo.biz', 'bar.info', 'foobar.toomany']}]}]}

  The network_state object:

  !!python/object:cloudinit.net.network_state.NetworkState
  _network_state:
      dns:
          nameservers: []
          search: []
      interfaces:
          eth0:
              address: null
              gateway: null
              inet: inet
              mac_address: null
              mode: manual
              mtu: null
              name: eth0
              subnets:
              -   _orig_eni_name: eth0
                  address: 192.168.125.154
                  control: auto
                  dns_nameservers:
                  - 192.168.125.1
                  - 8.8.8.8
                  - 8.8.4.4
                  - 1.2.3.4
                  dns_search:
                  - example.com
                  - foo.biz
                  - bar.info
                  - foobar.toomany
                  gateway: 192.168.125.1
                  netmask: 255.255.255.0
                  type: static
              type: physical
      routes: []
  _version: 1

To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-init/+bug/1705804/+subscriptions
Follow ups

[Bug 1705804] Re: sysconfig renderer should render DNSx= and GATEWAY= lines
From: Scott Moser, 2017-12-14