name: ovn-central-k8s
summary: Open Virtual Network for Open vSwitch
maintainer: OpenStack Charmers <openstack-charmers@lists.ubuntu.com>
description: |
  Principal charm that deploys ovn-northd, the OVN central control daemon,
  and ovsdb-server, the Open vSwitch Database (OVSDB).

  The ovn-northd daemon is responsible for translating the high-level OVN
  configuration into logical configuration consumable by daemons such as
  ovn-controller.

  The ovn-northd process talks to OVN Northbound- and Southbound- databases.

  The ovsdb-server exposes endpoints over relations implemented by the ovsdb
  interface.

  The charm supports clustering of the OVSDB, you must have a odd number of
  units for this to work. Note that write performance decreases as you
  increase the number of units.

  Running multiple ovn-northd daemons is supported and they will operate in
  active/passive mode. The daemon uses a locking feature in the OVSDB to
  automatically choose a single active instance.
tags:
- networking

containers:
  ovn-sb-db-server:
    resource: ovn-sb-db-server-image
  ovn-nb-db-server:
    resource: ovn-nb-db-server-image
  ovn-northd:
    resource: ovn-northd-image

resources:
  ovn-sb-db-server-image:
    type: oci-image
    description: OCI image
  ovn-nb-db-server-image:
    type: oci-image
    description: OCI image
  ovn-northd-image:
    type: oci-image
    description: OCI image

requires:
  certificates:
    interface: tls-certificates

provides:
  ovsdb:
    interface: ovsdb
  ovsdb-cms:
    interface: ovsdb-cms
  ovsdb-server:
    interface: ovsdb-cluster

peers:
  peers:
    interface: ovn-central-peer