Clouds, Networking and Technology

I have written a blog on Juniper's solution for FWaaS plugin which integrates SRX/vSRX with OpenStack Firewall flow. It has got published on Juniper's website. You can read it here

Assumptions : You are using ML2 plugin configured to use Vlans If you try to create a network for a tenant and it fails with the following error: Error: Failed to create network "Test": 503-{u'NeutronError': {u'message': u'Unable to create the network. No tenant network is available for allocation.', u'type': u'NoNetworkAvailable', u'detail': u''}} The problem can be due to missing configuration in the below files: In /etc/neutron/plugins/ml2/ml2_conf.ini network_vlan_ranges =physnet1:1000:2999 (1000:2999 is the Vlan range allocation) In /etc/neutron/plugins/openvswitch/ovs_neutron_plugin.ini bridge_mappings = physnet1:br-eth1 (in OVS we map the physical network to the OVS bridge) Note You should have created a bridge br-eth1 manually and mapped it to a port ovs-vsctl add-br br-eth1 ovs-vsctl add-port br-eth1 eth1 Once configuration is done, restart the neutron ovs agent on the compute node(s): ...

Once in a while, on a new setup, when you try to spawn a VM on Openstack and it may fail with the error :  No Suitable Host Found, it points to the fact the the Nova Scheduler failed to filter out a host to spawn the VM on. [The following trouble shooting is related to my setup. There are a lot of other factors that may lead to this error. So google a bit and check them in addition. This article can help you in figuring out the way to do troubleshooting.] A quick look at /var/log/nova/scheduler.log and compute.log shows an error: NovaException: Unexpected vif_type=binding_failed Filter RetryFilter returned 0 hosts This points to the fact that something is wrong with the Neutron setup. So a quick look into the neutron logs show the following: