Openstack Charmers Next Ovn Central

Open Virtual Network for Open vSwitch

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.