feat: run metadata through the OVN agent - #217
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Consume MicroOVN Northbound and Southbound connections through the ovn-env content plug. Configure neutron-ovn-agent with the metadata extension and fail closed when connection data is unavailable or invalid. Use the regular configure hook to reconcile the agent after charm-managed snap settings change. Keep local OVS schema readiness checks before launch. Assisted-By: Codex (gpt-5-6-sol) Signed-off-by: Guillaume Boutry <guillaume.boutry@canonical.com>
Cotyledon creates POSIX semaphores for its multiprocessing managers. Grant the Ceilometer compute and OVN agents private shared-memory access so the managers can start under strict confinement. Assisted-By: Codex (gpt-5-6-sol) Signed-off-by: Guillaume Boutry <guillaume.boutry@canonical.com>
gboutry
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ahmad-can and
hemanthnakkina
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ahmad-can
September 2, 2026 12:11
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@gboutry Is ovn-agent required by nodes running network role? |
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@hemanthnakkina It is not, ovn-agent, in our current use case, fills the exact same purpose as ovn-neutron-metadata-agent. (meaning, it's creating the network namespace for the VM to be able to talk to nova metadata api, giving access to cloud init and other info) |
hemanthnakkina
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Sep 4, 2026
hemanthnakkina
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LGTM
One minor note: if microovn does not come up, ovn-agent will fail to start and gets self-healed retrying to start the service.
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I believe it's fine to have ovn-agent trying to restart until microovn is back. Because the snap has no other mechanism to know if the other snap is back and healthy. |
ahmad-can
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Sep 4, 2026
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Consume MicroOVN Northbound and Southbound connections through the ovn-env content plug. Configure neutron-ovn-agent with the metadata extension and fail closed when connection data is unavailable or invalid.
Use the regular configure hook to reconcile the agent after charm-managed snap settings change. Keep local OVS schema readiness checks before launch.
QA steps
Deployed a full sunbeam gazpacho, and replaced the existing hypervisor with the charm and the snap changed.
The agent is responding correctly: