Managing Two Gateway in Linux Environment using routing rules

eth3
Ipaddr=192.168.1.45
Gateway 192.168.1.1

cat /etc/iproute2/rt_tables
echo "# dual nic-gateway below" >> /etc/iproute2/rt_tables
echo "10 routetable15" >> /etc/iproute2/rt_tables
cat /etc/iproute2/rt_tables

echo "
192.168.1.0 dev eth3 src 192.168.1.45 table routetable15
default via 192.168.1.1 dev eth3 table routetable15
" >> /etc/sysconfig/network-scripts/route-eth3
echo "
from 192.168.1.0/24 table routetable15
to 192.168.1.45 table routetable15
" >> /etc/sysconfig/network-scripts/rule-eth3

eth1
Ipaddr 192.168.2.45
gateway 192.168.2.1

cat /etc/iproute2/rt_tables
echo "# dual nic-gateway below" >> /etc/iproute2/rt_tables
echo "11 routetable17" >> /etc/iproute2/rt_tables
cat /etc/iproute2/rt_tables

echo "
192.168.2.0 dev eth1 src 192.168.2.45 table routetable17
default via 192.168.2.1 dev eth1 table routetable17
" >> /etc/sysconfig/network-scripts/route-eth1
echo "
from 192.168.2.0/24 table routetable17
to 192.168.2.45 table routetable17
" >> /etc/sysconfig/network-scripts/rule-eth1

Neutron + Pacemaker for HA Gives error

I was trying to configure HA for neutron server in icehouse implementation. I was able to set up ha for all other services except neutron. I was trying to use pacemaker for setting up HA  by following http://docs.openstack.org/high-availability-guide/content/_add_neutron_l3_agent_resource_to_pacemaker.html

but still i get following error. dhcp agent and metadata agent is showing no error but l3 agent is not working.

output of crm_mon -1

Last updated:FriJul1814:03:252014Last change:FriJul1813:54:042014 via cibadmin on network1 Stack: classic openais (with plugin)Current DC: network2 - partition with quorum Version:1.1.10-14.el6_5.3-368c7262Nodes configured,2 expected votes 4Resources configured

Online:[ network1 network2 ]

p_api-ip (ocf::heartbeat:IPaddr2):Started network2

p_neutron-dhcp-agent (ocf::openstack:neutron-dhcp-agent):Started network1

p_neutron-metadata-agent (ocf::openstack:neutron-metadata-agent):Started network1

Failed actions: p_neutron-l3-agent_start_0 on network2 'unknown error'(1): call=13, status=TimedOut,last-rc-change='Fri Jul 18 04:32:06 2014', queued=20091ms,exec=0ms p_neutron-l3-agent_start_0 on network1 'unknown error'(1): call=23, status=TimedOut,last-rc-change='Fri Jul 18 14:03:01 2014', queued=20010ms,exec=0ms[root@network1 openstack]#

Solution

The neutron-agent-l3 script to blame as it tries to communicate with neutron server
directly on port 9696, while communication is handled by AMQP service
(Qpid in my case). We need to modify the script to use Qpid port and not neutron server one.

Neutron Network Issue. Gateway not pinging for the external network.

In Network  node

ip netns

Above command will give the virtual router's as you can see my output below. From that select the qrouter ID and try command

ip netns exec <qrouter-id> ip addr

ip netns exec <qrouter-id> route -n

The above commands should show IP's in virtual router and routing table of qrouter.

make sure your routing table shown as has a gateway. Or else try setting it using

ip netns exec <qrouter-id> route add default gw *** *** *** ***

ip netns exec <qrouter-id> iptables save