Because ovsdb is a generic database tool, some one may have build other schemas. But for a native open vswitch install, this is the default state:
# ovsdb-client list-dbs
Open_vSwitch
_Server
It is possible to add a tcp connection to gain access to the database:
# ovs-appctl -t ovsdb-server ovsdb-server/add-remote ptcp:6640
# netstat -antp |grep ovs
tcp 0 0 0.0.0.0:6640 0.0.0.0:* LISTEN 746/ovsdb-server
tcp 0 0 127.0.0.1:57424 127.0.0.1:6633 ESTABLISHED 397/ovs-vswitchd
But on linux, there is an existing linux stream available:
# lsof|grep ovsdb|grep STREAM
ovsdb-ser 746 root 5u unix 0x000000001740f722 0t0 59425581 /var/run/openvswitch/db.sock type=STREAM
ovsdb-ser 746 root 16u unix 0x0000000021edd23e 0t0 12914 /var/run/openvswitch/db.sock type=STREAM
ovsdb-ser 746 root 19u unix 0x000000001b392a81 0t0 20287 /var/run/openvswitch/ovsdb-server.746.ctl type=STREAM
# ovs-vsctl list open_vswitch
_uuid : 8cfeb1c0-34ca-4f91-a162-7e9aef141344
bridges : [e65f5e97-36ec-45e3-b83e-64129dae61d3]
cur_cfg : 65
datapath_types : [netdev, system]
db_version : "7.16.1"
dpdk_initialized : false
dpdk_version : none
external_ids : {hostname="nuc8i7hvk01.burkholder.net", rundir="/var/run/openvswitch", system-id="02700cd5-96f5-4b4e-90b4-5e67fe06abf7"}
iface_types : [erspan, geneve, gre, internal, "ip6erspan", "ip6gre", lisp, patch, stt, system, tap, vxlan]
manager_options : []
next_cfg : 65
other_config : {}
ovs_version : "2.10.1"
ssl : []
statistics : {}
system_type : debian
system_version : []
# ovs-appctl dpif/show
system@ovs-system: hit:50661581 missed:207452
ovsbr0:
eno1 5/3: (system)
enp5s0 2/1: (system)
ovsbr0 65534/2: (internal)
veth-nvpn-v90 6/6: (system)
vlan110 4/5: (internal)
vlan90 3/4: (internal)
# ovs-appctl dpctl/show -s
system@ovs-system:
lookups: hit:50661616 missed:207458 lost:0
flows: 6
masks: hit:211426886 total:10 hit/pkt:4.16
port 0: ovs-system (internal)
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:1428 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:0 TX bytes:177489 (173.3 KiB)
port 1: enp5s0
RX packets:19439356 errors:0 dropped:0 overruns:0 frame:0
TX packets:30374161 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:10608677166 (9.9 GiB) TX bytes:29950322693 (27.9 GiB)
port 2: ovsbr0 (internal)
RX packets:333032 errors:0 dropped:29829 overruns:0 frame:0
TX packets:1428 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:23060625 (22.0 MiB) TX bytes:177489 (173.3 KiB)
port 3: eno1
RX packets:6037565 errors:0 dropped:0 overruns:0 frame:0
TX packets:5719808 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:4726094728 (4.4 GiB) TX bytes:3277870100 (3.1 GiB)
port 4: vlan90 (internal)
RX packets:0 errors:0 dropped:274558 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:0 TX bytes:0
port 5: vlan110 (internal)
RX packets:0 errors:0 dropped:274101 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:0 TX bytes:0
port 6: veth-nvpn-v90
RX packets:5000388 errors:0 dropped:0 overruns:0 frame:0
TX packets:5788139 errors:0 dropped:0 aborted:0 carrier:0
collisions:0
RX bytes:3055006377 (2.8 GiB) TX bytes:4647166781 (4.3 GiB)