Remote Error: IpAddressGenerationFailure No More IP Addresses Available on Network

Problem

• The pf9-neutron-l3-agent service fails to start. The following error is logged in /var/log/pf9/pf9-neutron-l3-agent.log.

None

ERROR neutron.agent.l3.router_info RemoteError: Remote error: IpAddressGenerationFailure No more IP addresses available on network [UUID].

• The list network namespace output is empty.

None

$ ip netns list

Environment

• Platform9 Managed OpenStack - v3.6.0 and Higher
• Neutron

Cause

• The IP addresses in the subnet allocation pool for the external network are exhausted.
• Either they all may be in use or may have stale IPs that need to be cleaned up.

Resolution

1. Identify the floating IP addresses not associated with any port.

None

$ openstack floating ip list --network [network uuid] | grep None

1. Delete the floating IPs with no port association.

None

$ openstack floating ip delete [UUID]

1. Start the Neutron L3 Agent service as root.

None

# systemctl start pf9-neutron-l3-agent.service