After drill down issue, i found i hit by following bug where lbaas set MTU from host interface 1500 but VxLAN use 1450 and it breaking communication :(
https://review.openstack.org/#/c/268321/2/neutron_lbaas/services/loadbalancer/drivers/haproxy/namespace_driver.py On Thu, Nov 10, 2016 at 3:12 PM, Nasir Mahmood <nasir.mahm...@gmail.com> wrote: > This is gonna hurt the os , but for this , you will need to change these > parms inside the neutron db. Which , for me at least, was asked to avoid at > maximum. > > > On Nov 11, 2016 12:07 AM, "Satish Patel" <satish....@gmail.com> wrote: >> >> In that doc it's not showing how to change MTU of existing created >> subnets. currently i am doing following on each veth pair but its not >> permanent, so how do i make it permanent across reboot >> >> ip netns exec qrouter-0363480e-01d7-4557-a3b9-e49244aa6a98 ifconfig >> qr-9284543e-58 mtu 1500 >> >> Is there any way or API so we can change this value in subnet >> >> [root@controller-5-1 neutron(keystone_admin)]# neutron net-show >> d9d691c2-ec91-48a1-9813-e472af249dae | grep mtu >> | mtu | 1450 | >> [root@ostack-controller-5-1 neutron(keystone_admin)]# >> >> On Thu, Nov 10, 2016 at 12:35 PM, Rick Jones <rick.jon...@hpe.com> wrote: >> > On 11/10/2016 09:23 AM, Satish Patel wrote: >> >> >> >> figure out.. just need to restart neutron-server and you have to >> >> delete existing network and re-create new network to get those change. >> >> >> >> How to change MTU on existing network-subnet ? >> > >> > >> > You would likely have to find all the virtual interfaces for it and >> > alter >> > them manually on the compute/network nodes. >> > >> > The HPE Helion docs on changing MTU, while describing some things >> > specific >> > to HPE Helion, does include the caveat about existing networks not being >> > altered: >> > >> > https://docs.hpcloud.com/hos-3.x/#helion/networking/configure_mtu.html >> > >> > rick jones >> > >> > >> > >> > _______________________________________________ >> > Mailing list: >> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> > Post to : openstack@lists.openstack.org >> > Unsubscribe : >> > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> >> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : openstack@lists.openstack.org >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
