Open Stack

Hi,

I see that in your ifcfg-br_tun file, the BOOTPROTO is static. You need to
give the IP address, gateway, netmask details in that file.

Regards,
Akash



From:	Uwe Sauter <uwe.sauter.de at gmail.com>
To:	"openstack at lists.openstack.org Openstack"
            <openstack at lists.openstack.org>
Date:	03/05/2015 04:08 PM
Subject:	[Openstack] OpenVSwitch ports won't come up / Neutron
            configuration	problems



Hi all,


I'm trying to setup Neutron (Juno) on CentOS 7 from RDO but keep failing.
So here are some items I'd like to get your opinion on:

(A graphical overview created with plotnetcfg (
https://github.com/jbenc/plotnetcfg) and gimp'ed together is attached.)

* Hostnames
  All my nodes have a native hostname that describes the location in my
rack. E.g. os484001 means this is an
  OpenStack member in rack 48, height unit 40, first node in this height
unit. They then get additional hostnames
  describing their function like "neutron-controller", "cinder01", etc.,
but only on the DNS server.

  Is this a problem? Do nodes need to be able to resolve all their
hostnames from /etc/hosts? Or should services
  get configured that native hostname (output from "hostname -s" or even
socket.getfqdn() in Python)?

* Static network interface configuration
  I have configured all network interfaces
using /etc/sysconfig/network-scripts/ifcfg-<name>. Those that should be
  part of OVS are configured like:

  /etc/sysconfig/network-scripts/ifcfg-enp6s0
    NAME=enp6s0
    HWADDR=00:21:5E:75:70:FA
    TYPE=OVSPort
    DEVICETYPE=ovs
    ONBOOT=yes
    BOOTPROTO=none
    OVS_BRIDGE=br_tun
    IPV4_FAILURE_FATAL=no
    IPV6INIT=no
    IPV6_AUTOCONF=no
    IPV6_DEFROUTE=no
    IPV6_FAILURE_FATAL=no
    IPV6_PEERDNS=no
    IPV6_PEERROUTES=no
    NM_CONTROLLED=no
    NOZEROCONF=yes

  Additionally I have configured all needed OVS bridges on compute and
network nodes like:
  (bridge names contain underscores instead of dashes as the management
scripts don't allow
  dashes in names)

  /etc/sysconfig/network-scripts/ifcfg-br_tun
    DEVICE=br_tun
    ONBOOT=yes
    BOOTPROTO=static
    DEVICETYPE=ovs
    TYPE=OVSBridge
    NOZEROCONF=yes

  Is this a correct way to configure OVS or do I have to rely on
OpenStack / OVS database to restore the configuration after
  reboot?

* With above configuration I got the problem that both hardware interfaces
and some OVS bridges are not brought up after reboot.

  What am I doing wrong?

* I want to setup Neutron so that tenant networks are separated by VLANs.
Unfortunately the documentation is sparse to none about
  this so I get the feeling that GRE tunneling is the most supported way to
separate networks.

  In this VLAN scenario, which OVS bridge needs to be connected to the
physical interface (and therefore 802.1q enabled switch)?
  br-int or br-tun (which in my case would be br_enp6s0 on the compute
nodes and br_tun on the network node)?

  What else do I need to configure besides:

  /etc/neutron/plugin.ini
    [ml2]
    mechanism_drivers = openvswitch
    tenant_network_types = local,vlan
    type_drivers = local,vlan
    [ml2_type_flat]
    [ml2_type_vlan]
    network_vlan_ranges = phys-tenant:1501:1510
    [ml2_type_gre]
    [ml2_type_vxlan]
    [securitygroup]
    enable_ipset = True
    enable_security_group = True
    firewall_driver =
neutron.agent.linux.iptables_firewall.OVSHybridIptablesFirewallDriver
    [ovs]
    bridge_mappings = phys-external:br_ext,phys-tenant:br_tun



I'd appreciate every hint.

Regards,

		 Uwe
[attachment "Neutron_setup.png" deleted by Akash Gunjal/India/IBM]
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