Friday, 2021-01-08

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ChiToHi everyone, happy new year, I want to ask if someone has experienced this issue: I have deployed an OpenStack with 6 compute nodes with OVS and DVR on the 6 nodes, so deploying neutron components as part of the compute nodes as well, I have enabled l3_ha as well as dvr and dvr_snat for the agent for those VMs that do not need floating IPs. My issue is that when I spin up x qty of instances and I allocate floating IPs on them everything works00:45
ChiTowithout any setbacks, but if on the same network I spin up another "10-20-x" qty of instances then I noticed that the connectivity with the floating IPs enter in an outage state and I noticed that after exactly 300 sec they come back, I did some tcpdumps on the fip net namespaces as well as the qrouter and it looks like the MAC addresses are not immediately updated to the virtual routers, not sure if it has to do with OVS or linux kernel in terms00:45
ChiToof the MAC learning functionality, by chance can you guide me on how to troubleshoot this issue and fix it? I would not expect that the communication with the external provider network is lost and restored after 300 sec, not sure if it has to do with some aging on the mac values from OVS. thanks!00:45
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