yahoo-eng-team team mailing list archive

[Alberto Murillo <powerbsd@xxxxxxxxx>]

Public bug reported:

When using nova network in multi_host configuration, it adds an
additional host file to dnsmasq options.

https://github.com/openstack/nova/blob/master/nova/network/linux_net.py#L1152
    if network_ref['multi_host']:
        cmd.append('--addn-hosts=%s' % _dhcp_file(dev, 'hosts'))


This file is not being created in advance causing a warning in journalctl/syslog        
        
Aug  7 22:00:06 devstack dnsmasq[604]: failed to load names from /opt/stack/data/nova/networks/nova-br100.hosts: No such file or directory
Aug  7 22:00:06 devstack dnsmasq-dhcp[604]: read /opt/stack/data/nova/networks/nova-br100.conf
Aug  7 22:00:06 devstack dnsmasq-dhcp[604]: read /opt/stack/data/nova/networks/nova-br100.opts

Steps to reproduce:
1. Install devstack on a fresh ubuntu 14.04 box
2. set multi_host = True in /etc/nova/nova.conf
3. Create a multihost network
	nova-manage network delete 10.0.0.0/24
	nova-manage network create --multi_host=T --fixed_range_v4=192.168.0.0/24 --bridge=br100 --label=demo-net
4. Restart nova services
5. Restart dnsmasq
6. Create instances

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1482793

Title:
  Failing to read nova-br100.hosts file when using nova network with
  multi_host configuration.

Status in OpenStack Compute (nova):
  New

Bug description:
  When using nova network in multi_host configuration, it adds an
  additional host file to dnsmasq options.

  https://github.com/openstack/nova/blob/master/nova/network/linux_net.py#L1152
      if network_ref['multi_host']:
          cmd.append('--addn-hosts=%s' % _dhcp_file(dev, 'hosts'))

  
  This file is not being created in advance causing a warning in journalctl/syslog        
          
  Aug  7 22:00:06 devstack dnsmasq[604]: failed to load names from /opt/stack/data/nova/networks/nova-br100.hosts: No such file or directory
  Aug  7 22:00:06 devstack dnsmasq-dhcp[604]: read /opt/stack/data/nova/networks/nova-br100.conf
  Aug  7 22:00:06 devstack dnsmasq-dhcp[604]: read /opt/stack/data/nova/networks/nova-br100.opts

  Steps to reproduce:
  1. Install devstack on a fresh ubuntu 14.04 box
  2. set multi_host = True in /etc/nova/nova.conf
  3. Create a multihost network
  	nova-manage network delete 10.0.0.0/24
  	nova-manage network create --multi_host=T --fixed_range_v4=192.168.0.0/24 --bridge=br100 --label=demo-net
  4. Restart nova services
  5. Restart dnsmasq
  6. Create instances

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