Open Stack

Hi, all.

I have two nodes
installation.
Server1  runs  all the components of Nova, Glance,Keystone and Horizon
(OpenStack Dashboard). Server2 runs only nova-compute. 
I am using FlatDHCP
mode  with a single network interface per
node.

network config :
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
        address 10.2.70.106
        netmask 255.255.255.0
        network 10.2.70.0
        broadcast 10.2.70.255
        gateway 10.2.70.1
        dns-nameservers 10.3.10.151
auto br100
iface br100 inet static
        address 192.168.3.1
        netmask 255.255.255.0
        bridge_stp off   
        bridge_fd 0    

Alter I assigned
floating ip to instances , I can ping to instances which running on server 1
but  I do it with instances are running
on server 2.
 
 
My nova.conf :

root at cloudca3:/home/cloudca3#
clear
root at cloudca3:/home/cloudca3#
cat /etc/nova/nova.conf 
--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/usr/bin/nova-dhcpbridge
--logdir=/var/log/nova
--state_path=/var/lib/nova
--lock_path=/run/lock/nova
--allow_admin_api=true
--use_deprecated_auth=false
--auth_strategy=keystone
--scheduler_driver=nova.scheduler.simple.SimpleScheduler
--s3_host=10.2.70.106
--ec2_host=10.2.70.106
--rabbit_host=10.2.70.106
--cc_host=10.2.70.106
--nova_url=http://10.2.70.106:8774/v1.1/
--routing_source_ip=10.2.70.106
--glance_api_servers=10.2.70.106:9292
--image_service=nova.image.glance.GlanceImageService
--iscsi_ip_prefix=192.168.4
--sql_connection=mysql://novadbadmin:passwordcloud@127.0.0.1/nova
--ec2_url=http://10.2.70.106:8773/services/Cloud
--keystone_ec2_url=http://10.2.70.106:5000/v2.0/ec2tokens
--api_paste_config=/etc/nova/api-paste.ini
--libvirt_type=kvm
--libvirt_use_virtio_for_bridges=true
--start_guests_on_host_boot=true
--resume_guests_state_on_host_boot=true
# vnc specific
configuration
--novnc_enabled=true
--novncproxy_base_url=http://10.2.70.106:6080/vnc_auto.html
--vncserver_proxyclient_address=10.2.70.106
--vncserver_listen=10.2.70.106
# network specific
settings
--network_manager=nova.network.manager.FlatDHCPManager
--public_interface=br100
--flat_interface=eth0
--flat_network_bridge=br100
--fixed_range=192.168.4.1/27
#--floating_range=10.2.70.106/27
--network_size=32
--flat_network_dhcp_start=192.168.4.33
--flat_injected=False
--force_dhcp_release
--iscsi_helper=tgtadm
--connection_type=libvirt
--root_helper=sudo
nova-rootwrap
--verbose
 
Check with "ip addr " command :
 
3: virbr0:
<NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN 
    link/ether 4e:08:87:24:c5:78 brd
ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255
scope global virbr0
5: br100:
<BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP 
    link/ether 50:e5:49:14:d6:f9 brd
ff:ff:ff:ff:ff:ff
    inet 192.168.4.33/27 brd 192.168.4.63 scope
global br100
    inet 192.168.3.1/24 brd 192.168.3.255 scope
global br100
    inet 10.2.70.106/24 brd 10.2.70.255 scope
global br100
    inet 10.2.70.129/32 scope global br100
    inet 10.2.70.130/32 scope global br100
    inet 10.2.70.131/32 scope global br100
    inet6 fe80::4ca2:a8ff:fe57:a569/64 scope
link 
       valid_lft forever preferred_lft forever

 

Nat rule :
Chain
nova-network-PREROUTING (1 references)
 pkts bytes target     prot opt in     out     source               destination         
    0     0 DNAT       tcp  --  *      *       0.0.0.0/0            169.254.169.254      tcp dpt:80
to:10.2.70.106:8775
 3363  279K DNAT       all  --  *      *       0.0.0.0/0            10.2.70.129          to:192.168.4.34
    5   240 DNAT       all  --  *      *       0.0.0.0/0            10.2.70.130          to:192.168.4.41
    0     0 DNAT       all  --  *      *       0.0.0.0/0            10.2.70.131          to:192.168.4.40
 
 
Chain
nova-network-float-snat (1 references)
 pkts bytes target     prot opt in     out     source               destination         
   11   660 SNAT       all  --  *      *       192.168.4.34         0.0.0.0/0            to:10.2.70.129
    2   120 SNAT       all  --  *      *       192.168.4.41         0.0.0.0/0            to:10.2.70.130
    5   300 SNAT       all  --  *      *       192.168.4.40         0.0.0.0/0            to:10.2.70.131
Chain
nova-network-OUTPUT (1 references)
 pkts bytes target     prot opt in     out     source               destination         
   17  1020 DNAT       all  --  *      *       0.0.0.0/0            10.2.70.129          to:192.168.4.34
    0     0 DNAT       all  --  *      *       0.0.0.0/0            10.2.70.130          to:192.168.4.41
    0     0 DNAT       all  --  *      *       0.0.0.0/0            10.2.70.131          to:192.168.4.40
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