ovn-controller-vtep(8) OVN Manual ovn-controller-vtep(8)
NAME
ovn-controller-vtep - Open Virtual Network local controller for vtep
enabled physical switches.
SYNOPSIS
ovn-controller-vtep [options] [--vtep-db=vtep-database] [--ovnsb-
db=ovnsb-database]
DESCRIPTION
ovn-controller-vtep is the local controller daemon in OVN, the Open
Virtual Network, for VTEP enabled physical switches. It connects up to
the OVN Southbound database (see ovn-sb(5)) over the OVSDB protocol,
and down to the VTEP database (see vtep(5)) over the OVSDB protocol.
PKI Options
PKI configuration is required in order to use SSL for the connections
to the VTEP and Southbound databases.
-p privkey.pem
--private-key=privkey.pem
Specifies a PEM file containing the private key used as
identity for outgoing SSL connections.
-c cert.pem
--certificate=cert.pem
Specifies a PEM file containing a certificate that certi‐
fies the private key specified on -p or --private-key to be
trustworthy. The certificate must be signed by the certifi‐
cate authority (CA) that the peer in SSL connections will
use to verify it.
-C cacert.pem
--ca-cert=cacert.pem
Specifies a PEM file containing the CA certificate for ver‐
ifying certificates presented to this program by SSL peers.
(This may be the same certificate that SSL peers use to
verify the certificate specified on -c or --certificate, or
it may be a different one, depending on the PKI design in
use.)
-C none
--ca-cert=none
Disables verification of certificates presented by SSL
peers. This introduces a security risk, because it means
that certificates cannot be verified to be those of known
trusted hosts.
--bootstrap-ca-cert=cacert.pem
When cacert.pem exists, this option has the same effect
as -C or --ca-cert. If it does not exist, then the exe‐
cutable will attempt to obtain the CA certificate from
the SSL peer on its first SSL connection and save it to
the named PEM file. If it is successful, it will immedi‐
ately drop the connection and reconnect, and from then on
all SSL connections must be authenticated by a certifi‐
cate signed by the CA certificate thus obtained.
This option exposes the SSL connection to a man-in-the-
middle attack obtaining the initial CA certificate, but
it may be useful for bootstrapping.
This option is only useful if the SSL peer sends its CA
certificate as part of the SSL certificate chain. The SSL
protocol does not require the server to send the CA cer‐
tificate.
This option is mutually exclusive with -C and --ca-cert.
--peer-ca-cert=peer-cacert.pem
Specifies a PEM file that contains one or more additional
certificates to send to SSL peers. peer-cacert.pem should
be the CA certificate used to sign the program’s own cer‐
tificate, that is, the certificate specified on -c or
--certificate. If the program’s certificate is self-
signed, then --certificate and --peer-ca-cert should
specify the same file.
This option is not useful in normal operation, because
the SSL peer must already have the CA certificate for the
peer to have any confidence in the program’s identity.
However, this offers a way for a new installation to
bootstrap the CA certificate on its first SSL connection.
CONFIGURATION
ovn-controller-vtep retrieves its configuration information from both
the ovnsb and the vtep database. If the database locations are not
given from command line, the default is the db.sock in local OVSDB’s
’run’ directory. The database location must take one of the following
forms:
• ssl:host:port
The specified SSL port on the give host, which can either
be a DNS name (if built with unbound library) or an IP
address (IPv4 or IPv6). If host is an IPv6 address, then
wrap host with square brackets, e.g.: ssl:[::1]:6640. The
--private-key, --certificate and either of --ca-cert or
--bootstrap-ca-cert options are mandatory when this form
is used.
• tcp:host:port
Connect to the given TCP port on host, where host can be
a DNS name (if built with unbound library) or IP address
(IPv4 or IPv6). If host is an IPv6 address, then wrap
host with square brackets, e.g.: tcp:[::1]:6640.
• unix:file
On POSIX, connect to the Unix domain server socket named
file.
On Windows, connect to a localhost TCP port whose value
is written in file.
ovn-controller-vtep assumes it gets configuration information from the
following keys in the Global table of the connected hardware_vtep data‐
base:
other_config:ovn-match-northd-version
The boolean flag indicates if ovn-controller-vtep needs
to check ovn-northd version. If this flag is set to true
and the ovn-northd’’s version (reported in the Southbound
database) doesn’t match with the ovn-controller-vtep’’s
internal version, then it will stop processing the south‐
bound and connected hardware_vtep database changes. The
default value is considered false if this option is not
defined.
OVN 22.12.3 ovn-controller-vtep ovn-controller-vtep(8)