QA:Testcase OpenStack floating IPs
Set up Floating IPs with OpenStack
Make sure that nova is configured with the correct public network interface. The default is eth0, but you can change it like:
$> ifconfig etho eth0: error fetching interface information: Device not found $> ifconfig em1 em1: flags=... $> echo '--public_interface=em1' | sudo tee -a /etc/nova/nova.conf $> sudo service openstack-nova-network restart
Ensure that ICMP (ping) and SSH are allowed to your instances.
$> euca-authorize -P icmp -t -1:-1 default $> euca-authorize -P tcp -p 22 default
How to test
If you've followed all of the test cases, the private network used for OpenStack instances is 10.0.0.0/24. The purpose of this functionality is to be able to assign a pool of floating public IP addresses to instances, as well.
The details of this test case are a bit specific to the environment you are using to test. For this documentation, we're going to assume that the the OpenStack server's public interface is on the 192.168.122.0/24 subnet. We are going to take an unused address from this subnet, 192.168.122.150, and define it as a floating IP address to be used by OpenStack.
$> sudo nova-manage floating create 192.168.122.150/31
Allocate an address to use for an instance:
$> euca-allocate-address ADDRESS 192.168.122.150
Associate the allocated address with a running instance:
$> euca-associate-address -i i-00000001 192.168.122.150 ADDRESS 192.168.122.150 i-00000001
Verify that the public IP address got assigned to your public network interface on the OpenStack server.
$> ip addr ... 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 52:54:00:db:c8:51 brd ff:ff:ff:ff:ff:ff inet 192.168.122.58/24 brd 192.168.122.255 scope global eth0 inet 192.168.122.150/32 scope global eth0
Verify that you can now ssh into the instance using the newly assigned address:
$> cd ~/novacreds $> ssh -i nova_key.priv -o UserKnownHostsFile=/dev/null firstname.lastname@example.org
Check for new errors in the logs:
$> grep -i error /var/log/nova/*.log
If you would like, you can now disassociate and release the address assigned for testing.
$> euca-disassociate-address 192.168.122.150 ADDRESS 192.168.122.150 $> euca-release-address 192.168.122.150 ADDRESS 192.168.122.150