On Tue, Nov 5, 2019 at 2:53 PM wrote:
>
> From: Numan Siddique
>
> This series adds load balancer health check feature. With this
> ovn-controllers will periodically check the status of the backend
> services. Only those services which are online/active will be considered
> for load balancing.
>
> Right now this feature is restricted to IPv4 Load balancers only.
> CMS needs to enable this feature and the load balancer vips and backends
> should have L4 port defined.
>
> For TCP backends, the local ovn-controller which binds that service's
> VIF, will periodically send a SYN packet and would expect SYN-ACK
> response to set the status of that service to online. If no response
> is received within the timeout, then the service status is set to
> offline.
>
> For UDP backends, the local ovn-controller which binds that service's
> VIF, will periodically send an UDP packet and expects no reply. If no
> reply is received within the timeout vallue, the service status is set
> to online. In case the service is down, then ovn-controller expects
> ICMP unreachable packet and upon receiving this ICMP packets, it sets
> the status to offline.
>
> ovn-northd adds only those backends whose status is 'online' or empty to
> the ct_lb action.
>
>
> v1 -> v2
> ---
> * Addressed review comment from Mark in p1.
> * Rebased to latest master and resolved conflicts.
Thanks for the reviews Mark. I applied this series to master.
Numan
>
> Numan Siddique (3):
> ovn-northd: Add support for Load Balancer health check
> Add a new action - handle_svc_check
> Send service monitor health checks
>
> controller/ovn-controller.c | 2 +
> controller/pinctrl.c | 775 --
> controller/pinctrl.h | 2 +
> include/ovn/actions.h | 17 +-
> lib/actions.c | 42 ++
> northd/ovn-northd.8.xml | 85 +++-
> northd/ovn-northd.c | 510 --
> ovn-nb.ovsschema | 25 +-
> ovn-nb.xml| 68 +++
> ovn-sb.ovsschema | 33 +-
> ovn-sb.xml| 102 +
> tests/ovn-northd.at | 215 ++
> tests/ovn.at | 132 ++
> tests/system-common-macros.at | 1 +
> tests/system-ovn.at | 180
> utilities/ovn-trace.c | 3 +
> 16 files changed, 2119 insertions(+), 73 deletions(-)
>
> --
> 2.23.0
>
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