локальный контроллер Open Virtual Network (Open Virtual Network local controller)
OVN SOUTHBOUND DATABASE USAGE
ovn-controller reads from much of the OVN_Southbound database to
guide its operation. ovn-controller also writes to the following
tables:
Chassis
Upon startup, ovn-controller creates a row in this
table to represent its own chassis. Upon graceful
termination, e.g. with ovs-appctl -t ovn-controller
exit (but not SIGTERM), ovn-controller removes its
row.
Encap Upon startup, ovn-controller creates a row or rows
in this table that represent the tunnel
encapsulations by which its chassis can be reached,
and points its Chassis row to them. Upon graceful
termination, ovn-controller removes these rows.
Port_Binding
At runtime, ovn-controller sets the chassis columns
of ports that are resident on its chassis to point
to its Chassis row, and, conversely, clears the
chassis column of ports that point to its Chassis
row but are no longer resident on its chassis. The
chassis column has a weak reference type, so when
ovn-controller gracefully exits and removes its
Chassis row, the database server automatically
clears any remaining references to that row.
MAC_Binding
At runtime, ovn-controller updates the MAC_Binding
table as instructed by put_arp and put_nd logical
actions. These changes persist beyond the lifetime
of ovn-controller.
