[root@localhost ~]# ovs-appctl --version
ovs-appctl (Open vSwitch) 2.12.1
[root@localhost ~]# ovsdb-tool create /etc/openvswitch/conf.db /usr/share/openvswitch/vswitch.ovsschema
[root@localhost ~]# ls /etc/openvswitch/
conf.db
[root@localhost ~]# ovsdb-server --remote=punix:/usr/local/var/run/openvswitch/db.sock \
>                      --remote=db:Open_vSwitch,Open_vSwitch,manager_options \
>                      --private-key=db:Open_vSwitch,SSL,private_key \
>                      --certificate=db:Open_vSwitch,SSL,certificate \
>                      --bootstrap-ca-cert=db:Open_vSwitch,SSL,ca_cert \
>                      --pidfile --detach
[root@localhost ~]# ovs-vsctl --no-wait init
[root@localhost ~]# ovs-vsctl --no-wait set Open_vSwitch . other_config:dpdk-init=true
[root@localhost ~]# ovs-vswitchd unix:/var/run/openvswitch/db.sock \
> -vconsole:emer -vsyslog:err -vfile:info --mlockall --no-chdir \
> --log-file=/var/log/openvswitch/ovs-vswitchd.log \
> --pidfile=/var/run/openvswitch/ovs-vswitchd.pid \
> --detach --monitor