Ubuntu Manpage: vtep-ctl - utility for querying and configuring a VTEP database

Provided by: openvswitch-vtep_2.5.9-0ubuntu0.16.04.3_amd64

NAME

       vtep-ctl - utility for querying and configuring a VTEP database

SYNOPSIS

       vtep-ctl [options] -- [options] command [args] [-- [options] command [args]]...

DESCRIPTION

       The   vtep-ctl  program  configures  a  VTEP  database.   See  vtep(5)  for  comprehensive
       documentation of the database schema.

       vtep-ctl connects to an ovsdb-server process that maintains a VTEP configuration database.
       Using  this connection, it queries and possibly applies changes to the database, depending
       on the supplied commands.

       vtep-ctl can perform any number of commands in a  single  run,  implemented  as  a  single
       atomic transaction against the database.

       The vtep-ctl command line begins with global options (see OPTIONS below for details).  The
       global options are followed by one or more commands.  Each command should begin with -- by
       itself  as  a  command-line argument, to separate it from the following commands.  (The --
       before the first command is optional.)  The command itself  starts  with  command-specific
       options,  if  any, followed by the command name and any arguments.  See EXAMPLES below for
       syntax examples.

OPTIONS

The following options affect the behavior vtep-ctl as a whole. Some individual commands
also accept their own options, which are given just before the command name. If the first
command on the command line has options, then those options must be separated from the
global options by --.

--db=server
Sets server as the database server that vtep-ctl contacts to query or modify
configuration. The default is unix:/var/run/openvswitch/db.sock. server must take
one of the following forms:

ssl:ip:port
The specified SSL port on the host at the given ip, which must be expressed
as an IP address (not a DNS name) in IPv4 or IPv6 address format. If ip is
an IPv6 address, then wrap ip with square brackets, e.g.: ssl:[::1]:6640.
The --private-key, --certificate, and --ca-cert options are mandatory when
this form is used.

tcp:ip:port
Connect to the given TCP port on ip, where ip can be IPv4 or IPv6 address.
If ip is an IPv6 address, then wrap ip 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.

pssl:port[:ip]
Listen on the given SSL port for a connection. By default, connections are
not bound to a particular local IP address and it listens only on IPv4 (but
not IPv6) addresses, but specifying ip limits connections to those from the
given ip, either IPv4 or IPv6 address. If ip is an IPv6 address, then wrap
ip with square brackets, e.g.: pssl:6640:[::1]. The --private-key,
--certificate, and --ca-cert options are mandatory when this form is used.

ptcp:port[:ip]
Listen on the given TCP port for a connection. By default, connections are
not bound to a particular local IP address and it listens only on IPv4 (but
not IPv6) addresses, but ip may be specified to listen only for connections
to the given ip, either IPv4 or IPv6 address. If ip is an IPv6 address,
then wrap ip with square brackets, e.g.: ptcp:6640:[::1].

punix:file
On POSIX, listen on the Unix domain server socket named file for a
connection.

On Windows, listen on a kernel chosen TCP port on the localhost. The kernel
chosen TCP port value is written in file.

--no-syslog
By default, vtep-ctl logs its arguments and the details of any changes that it
makes to the system log. This option disables this logging.

This option is equivalent to --verbose=vtep_ctl:syslog:warn.

--oneline
Modifies the output format so that the output for each command is printed on a
single line. New-line characters that would otherwise separate lines are printed
as \n, and any instances of \ that would otherwise appear in the output are
doubled. Prints a blank line for each command that has no output. This option
does not affect the formatting of output from the list or find commands; see Table
Formatting Options below.

--dry-run
Prevents vtep-ctl from actually modifying the database.

-t secs
--timeout=secs
By default, or with a secs of 0, vtep-ctl waits forever for a response from the
database. This option limits runtime to approximately secs seconds. If the
timeout expires, vtep-ctl will exit with a SIGALRM signal. (A timeout would
normally happen only if the database cannot be contacted, or if the system is
overloaded.)

Table Formatting Options
These options control the format of output from the list and find commands.

-f format
--format=format
Sets the type of table formatting. The following types of format are available:

table (default)
2-D text tables with aligned columns.

list A list with one column per line and rows separated by a blank line.

html HTML tables.

csv Comma-separated values as defined in RFC 4180.

json JSON format as defined in RFC 4627. The output is a sequence of JSON
objects, each of which corresponds to one table. Each JSON object has the
following members with the noted values:

caption
The table's caption. This member is omitted if the table has no
caption.

headings
An array with one element per table column. Each array element is a
string giving the corresponding column's heading.

data An array with one element per table row. Each element is also an
array with one element per table column. The elements of this
second-level array are the cells that constitute the table. Cells
that represent OVSDB data or data types are expressed in the format
described in the OVSDB specification; other cells are simply
expressed as text strings.

-d format
--data=format
Sets the formatting for cells within output tables. The following types of format
are available:

string (default)
The simple format described in the Database Values section of ovs-vsctl(8).

bare The simple format with punctuation stripped off: [] and {} are omitted
around sets, maps, and empty columns, items within sets and maps are space-
separated, and strings are never quoted. This format may be easier for
scripts to parse.

json JSON.

The json output format always outputs cells in JSON format, ignoring this option.

--no-heading
This option suppresses the heading row that otherwise appears in the first row of
table output.

--pretty
By default, JSON in output is printed as compactly as possible. This option causes
JSON in output to be printed in a more readable fashion. Members of objects and
elements of arrays are printed one per line, with indentation.

This option does not affect JSON in tables, which is always printed compactly.

--bare Equivalent to --format=list --data=bare --no-headings.

Public Key Infrastructure Options
-p privkey.pem
--private-key=privkey.pem
Specifies a PEM file containing the private key used as vtep-ctl's identity for
outgoing SSL connections.

-c cert.pem
--certificate=cert.pem
Specifies a PEM file containing a certificate that certifies the private key
specified on -p or --private-key to be trustworthy. The certificate must be signed
by the certificate 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 that vtep-ctl should use to
verify certificates presented to it 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 vtep-ctl 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 immediately drop the connection and reconnect, and from then on
all SSL connections must be authenticated by a certificate 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
certificate.

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 vtep-ctl's
own certificate, that is, the certificate specified on -c or --certificate. If
vtep-ctl'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 vtep-ctl's identity.
However, this offers a way for a new installation to bootstrap the CA certificate
on its first SSL connection.

-v[spec]
--verbose=[spec]
Sets logging levels. Without any spec, sets the log level for every module and
destination to dbg. Otherwise, spec is a list of words separated by spaces or
commas or colons, up to one from each category below:

• A valid module name, as displayed by the vlog/list command on ovs-appctl(8),
limits the log level change to the specified module.

• syslog, console, or file, to limit the log level change to only to the
system log, to the console, or to a file, respectively. (If --detach is
specified, vtep-ctl closes its standard file descriptors, so logging to the
console will have no effect.)

On Windows platform, syslog is accepted as a word and is only useful along
with the --syslog-target option (the word has no effect otherwise).

• off, emer, err, warn, info, or dbg, to control the log level. Messages of
the given severity or higher will be logged, and messages of lower severity
will be filtered out. off filters out all messages. See ovs-appctl(8) for
a definition of each log level.

Case is not significant within spec.

Regardless of the log levels set for file, logging to a file will not take place
unless --log-file is also specified (see below).

For compatibility with older versions of OVS, any is accepted as a word but has no
effect.

-v
--verbose
Sets the maximum logging verbosity level, equivalent to --verbose=dbg.

-vPATTERN:destination:pattern
--verbose=PATTERN:destination:pattern
Sets the log pattern for destination to pattern. Refer to ovs-appctl(8) for a
description of the valid syntax for pattern.

-vFACILITY:facility
--verbose=FACILITY:facility
Sets the RFC5424 facility of the log message. facility can be one of kern, user,
mail, daemon, auth, syslog, lpr, news, uucp, clock, ftp, ntp, audit, alert, clock2,
local0, local1, local2, local3, local4, local5, local6 or local7. If this option is
not specified, daemon is used as the default for the local system syslog and local0
is used while sending a message to the target provided via the --syslog-target
option.

--log-file[=file]
Enables logging to a file. If file is specified, then it is used as the exact name
for the log file. The default log file name used if file is omitted is
/var/log/openvswitch/vtep-ctl.log.

--syslog-target=host:port
Send syslog messages to UDP port on host, in addition to the system syslog. The
host must be a numerical IP address, not a hostname.

--syslog-method=method
Specify method how syslog messages should be sent to syslog daemon. Following
forms are supported:

• libc, use libc syslog() function. This is the default behavior. Downside
of using this options is that libc adds fixed prefix to every message before
it is actually sent to the syslog daemon over /dev/log UNIX domain socket.

• unix:file, use UNIX domain socket directly. It is possible to specify
arbitrary message format with this option. However, rsyslogd 8.9 and older
versions use hard coded parser function anyway that limits UNIX domain
socket use. If you want to use arbitrary message format with older rsyslogd
versions, then use UDP socket to localhost IP address instead.

• udp:ip:port, use UDP socket. With this method it is possible to use
arbitrary message format also with older rsyslogd. When sending syslog
messages over UDP socket extra precaution needs to be taken into account,
for example, syslog daemon needs to be configured to listen on the specified
UDP port, accidental iptables rules could be interfering with local syslog
traffic and there are some security considerations that apply to UDP
sockets, but do not apply to UNIX domain sockets.

-h
--help Prints a brief help message to the console.

-V
--version
Prints version information to the console.

COMMANDS

The commands implemented by vtep-ctl are described in the sections below.

Physical Switch Commands
These commands examine and manipulate physical switches.

[--may-exist] add-ps pswitch
Creates a new physical switch named pswitch. Initially the switch will have no
ports.

Without --may-exist, attempting to create a switch that exists is an error. With
--may-exist, this command does nothing if pswitch already exists.

[--if-exists] del-ps pswitch
Deletes pswitch and all of its ports.

Without --if-exists, attempting to delete a switch that does not exist is an error.
With --if-exists, attempting to delete a switch that does not exist has no effect.

list-ps
Lists all existing physical switches on standard output, one per line.

ps-exists pswitch
Tests whether pswitch exists. If so, vtep-ctl exits successfully with exit code 0.
If not, vtep-ctl exits unsuccessfully with exit code 2.

Port Commands
These commands examine and manipulate VTEP physical ports.

list-ports pswitch
Lists all of the ports within pswitch on standard output, one per line.

[--may-exist] add-port pswitch port
Creates on pswitch a new port named port from the network device of the same name.

Without --may-exist, attempting to create a port that exists is an error. With
--may-exist, this command does nothing if port already exists on pswitch.

[--if-exists] del-port [pswitch] port
Deletes port. If pswitch is omitted, port is removed from whatever switch contains
it; if pswitch is specified, it must be the switch that contains port.

Without --if-exists, attempting to delete a port that does not exist is an error.
With --if-exists, attempting to delete a port that does not exist has no effect.

Logical Switch Commands
These commands examine and manipulate logical switches.

[--may-exist] add-ls lswitch
Creates a new logical switch named lswitch. Initially the switch will have no
locator bindings.

Without --may-exist, attempting to create a switch that exists is an error. With
--may-exist, this command does nothing if lswitch already exists.

[--if-exists] del-ls lswitch
Deletes lswitch.

Without --if-exists, attempting to delete a switch that does not exist is an error.
With --if-exists, attempting to delete a switch that does not exist has no effect.

list-ls
Lists all existing logical switches on standard output, one per line.

ls-exists lswitch
Tests whether lswitch exists. If so, vtep-ctl exits successfully with exit code 0.
If not, vtep-ctl exits unsuccessfully with exit code 2.

bind-ls pswitch port vlan lswitch
Bind logical switch lswitch to the port/vlan combination on the physical switch
pswitch.

unbind-ls pswitch port vlan
Remove the logical switch binding from the port/vlan combination on the physical
switch pswitch.

list-bindings pswitch port
List the logical switch bindings for port on the physical switch pswitch.

Local MAC Binding Commands
These commands examine and manipulate local MAC bindings for the logical switch. The
local maps are written by the VTEP to refer to MACs it has learned on its physical ports.

add-ucast-local lswitch mac [encap] ip
Map the unicast Ethernet address mac to the physical location ip using
encapsulation encap on lswitch. If encap is not specified, the default is
"vxlan_over_ipv4". The local mappings are used by the VTEP to refer to MACs
learned on its physical ports.

del-ucast-local lswitch mac
Remove the local unicast Ethernet address mac map from lswitch. The local mappings
are used by the VTEP to refer to MACs learned on its physical ports.

add-mcast-local lswitch mac [encap] ip
Add physical location ip using encapsulation encap to the local mac binding table
for multicast Ethernet address mac on lswitch. If encap is not specified, the
default is "vxlan_over_ipv4". The local mappings are used by the VTEP to refer to
MACs learned on its physical ports.

del-mcast-local lswitch mac [encap] ip
Remove physical location ip using encapsulation encap from the local mac binding
table for multicast Ethernet address mac on lswitch. If encap is not specified,
the default is "vxlan_over_ipv4". The local mappings are used by the VTEP to refer
to MACs learned on its physical ports.

clear-local-macs lswitch
Clear the local MAC bindings for lswitch.

list-local-macs lswitch
List the local MAC bindings for lswitch, one per line.

Remote MAC Binding Commands
These commands examine and manipulate local and remote MAC bindings for the logical
switch. The remote maps are written by the network virtualization controller to refer to
MACs that it has learned.

add-ucast-remote lswitch mac [encap] ip
Map the unicast Ethernet address mac to the physical location ip using
encapsulation encap on lswitch. If encap is not specified, the default is
"vxlan_over_ipv4". The remote mappings are used by the network virtualization
platform to refer to MACs that it has learned.

del-ucast-remote lswitch mac
Remove the remote unicast Ethernet address mac map from lswitch. The remote
mappings are used by the network virtualization platform to refer to MACs that it
has learned.

add-mcast-remote lswitch mac [encap] ip
Add physical location ip using encapsulation encap to the remote mac binding table
for multicast Ethernet address mac on lswitch. If encap is not specified, the
default is "vxlan_over_ipv4". The remote mappings are used by the network
virtualization platform to refer to MACs that it has learned.

del-mcast-remote lswitch mac [encap] ip
Remove physical location ip using encapsulation encap from the remote mac binding
table for multicast Ethernet address mac on lswitch. If encap is not specified,
the default is "vxlan_over_ipv4". The remote mappings are used by the network
virtualization platform to refer to MACs that it has learned.

clear-remote-macs lswitch
Clear the remote MAC bindings for lswitch.

list-remote-macs lswitch
List the remote MAC bindings for lswitch, one per line.

Manager Connectivity
These commands manipulate the managers column in the Global table and rows in the Managers
table. When ovsdb-server is configured to use the managers column for OVSDB connections
(as described in INSTALL.Linux and in the startup scripts provided with Open vSwitch),
this allows the administrator to use vtep-ctl to configure database connections.

get-manager
Prints the configured manager(s).

del-manager
Deletes the configured manager(s).

set-manager target...
Sets the configured manager target or targets. Each target may use any of the
following forms:

tcp:ip:port
Connect to the given TCP port on ip, where ip can be IPv4 or IPv6 address.
If ip is an IPv6 address, then wrap ip 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.

punix:file
On POSIX, listen on the Unix domain server socket named file for a
connection.

On Windows, listen on a kernel chosen TCP port on the localhost. The kernel
chosen TCP port value is written in file.

Database Commands
These commands query and modify the contents of ovsdb tables. They are a slight
abstraction of the ovsdb interface and as such they operate at a lower level than other
vtep-ctl commands.

Identifying Tables, Records, and Columns

Each of these commands has a table parameter to identify a table within the database.
Many of them also take a record parameter that identifies a particular record within a
table. The record parameter may be the UUID for a record, and many tables offer
additional ways to identify records. Some commands also take column parameters that
identify a particular field within the records in a table.

The following tables are currently defined:

Global Top-level configuration for a hardware VTEP. This table contains exactly one
record, identified by specifying . as the record name.

Manager
Configuration for an OVSDB connection. Records may be identified by target (e.g.
tcp:1.2.3.4).

Physical_Switch
A physical switch that implements a VTEP. Records may be identified by physical
switch name.

Physical_Port
A port within a physical switch.

Logical_Binding_Stats
Reports statistics for the logical switch with which a VLAN on a physical port is
associated.

Logical_Switch
A logical Ethernet switch. Records may be identified by logical switch name.

Ucast_Macs_Local
Mapping of locally discovered unicast MAC addresses to tunnels.

Ucast_Macs_Remote
Mapping of remotely programmed unicast MAC addresses to tunnels.

Mcast_Macs_Local
Mapping of locally discovered multicast MAC addresses to tunnels.

Mcast_Macs_Remote
Mapping of remotely programmed multicast MAC addresses to tunnels.

Physical_Locator_Set
A set of one or more physical locators.

Physical_Locator
Identifies an endpoint to which logical switch traffic may be encapsulated and
forwarded. Records may be identified by physical locator name.

Record names must be specified in full and with correct capitalization. Names of tables
and columns are not case-sensitive, and -- and _ are treated interchangeably. Unique
abbreviations are acceptable, e.g. man or m is sufficient to identify the Manager table.

Database Values

Each column in the database accepts a fixed type of data. The currently defined basic
types, and their representations, are:

integer
A decimal integer in the range -2**63 to 2**63-1, inclusive.

real A floating-point number.

Boolean
True or false, written true or false, respectively.

string An arbitrary Unicode string, except that null bytes are not allowed. Quotes are
optional for most strings that begin with an English letter or underscore and
consist only of letters, underscores, hyphens, and periods. However, true and
false and strings that match the syntax of UUIDs (see below) must be enclosed in
double quotes to distinguish them from other basic types. When double quotes are
used, the syntax is that of strings in JSON, e.g. backslashes may be used to escape
special characters. The empty string must be represented as a pair of double
quotes ("").

UUID Either a universally unique identifier in the style of RFC 4122, e.g.
f81d4fae-7dec-11d0-a765-00a0c91e6bf6, or an @name defined by a get or create
command within the same vtep-ctl invocation.

Multiple values in a single column may be separated by spaces or a single comma. When
multiple values are present, duplicates are not allowed, and order is not important.
Conversely, some database columns can have an empty set of values, represented as [], and
square brackets may optionally enclose other non-empty sets or single values as well.

A few database columns are ``maps'' of key-value pairs, where the key and the value are
each some fixed database type. These are specified in the form key=value, where key and
value follow the syntax for the column's key type and value type, respectively. When
multiple pairs are present (separated by spaces or a comma), duplicate keys are not
allowed, and again the order is not important. Duplicate values are allowed. An empty
map is represented as {}. Curly braces may optionally enclose non-empty maps as well (but
use quotes to prevent the shell from expanding other-config={0=x,1=y} into other-
config=0=x other-config=1=y, which may not have the desired effect).

Database Command Syntax

[--if-exists] [--columns=column[,column]...] list table [record]...
Lists the data in each specified record. If no records are specified, lists all
the records in table.

If --columns is specified, only the requested columns are listed, in the specified
order. Otherwise, all columns are listed, in alphabetical order by column name.

Without --if-exists, it is an error if any specified record does not exist. With
--if-exists, the command ignores any record that does not exist, without producing
any output.

[--columns=column[,column]...] find table [column[:key]=value]...
Lists the data in each record in table whose column equals value or, if key is
specified, whose column contains a key with the specified value. The following
operators may be used where = is written in the syntax summary:

= != < > <= >=
Selects records in which column[:key] equals, does not equal, is less than,
is greater than, is less than or equal to, or is greater than or equal to
value, respectively.

Consider column[:key] and value as sets of elements. Identical sets are
considered equal. Otherwise, if the sets have different numbers of
elements, then the set with more elements is considered to be larger.
Otherwise, consider a element from each set pairwise, in increasing order
within each set. The first pair that differs determines the result. (For a
column that contains key-value pairs, first all the keys are compared, and
values are considered only if the two sets contain identical keys.)

{=} {!=}
Test for set equality or inequality, respectively.

{<=} Selects records in which column[:key] is a subset of value. For example,
flood-vlans{<=}1,2 selects records in which the flood-vlans column is the
empty set or contains 1 or 2 or both.

{<} Selects records in which column[:key] is a proper subset of value. For
example, flood-vlans{<}1,2 selects records in which the flood-vlans column
is the empty set or contains 1 or 2 but not both.

{>=} {>}
Same as {<=} and {<}, respectively, except that the relationship is
reversed. For example, flood-vlans{>=}1,2 selects records in which the
flood-vlans column contains both 1 and 2.

For arithmetic operators (= != < > <= >=), when key is specified but a particular
record's column does not contain key, the record is always omitted from the
results. Thus, the condition other-config:mtu!=1500 matches records that have a
mtu key whose value is not 1500, but not those that lack an mtu key.

For the set operators, when key is specified but a particular record's column does
not contain key, the comparison is done against an empty set. Thus, the condition
other-config:mtu{!=}1500 matches records that have a mtu key whose value is not
1500 and those that lack an mtu key.

Don't forget to escape < or > from interpretation by the shell.

If --columns is specified, only the requested columns are listed, in the specified
order. Otherwise all columns are listed, in alphabetical order by column name.

The UUIDs shown for rows created in the same vtep-ctl invocation will be wrong.

[--if-exists] [--id=@name] get table record [column[:key]]...
Prints the value of each specified column in the given record in table. For map
columns, a key may optionally be specified, in which case the value associated with
key in the column is printed, instead of the entire map.

Without --if-exists, it is an error if record does not exist or key is specified,
if key does not exist in record. With --if-exists, a missing record yields no
output and a missing key prints a blank line.

If @name is specified, then the UUID for record may be referred to by that name
later in the same vtep-ctl invocation in contexts where a UUID is expected.

Both --id and the column arguments are optional, but usually at least one or the
other should be specified. If both are omitted, then get has no effect except to
verify that record exists in table.

--id and --if-exists cannot be used together.

[--if-exists] set table record column[:key]=value...
Sets the value of each specified column in the given record in table to value. For
map columns, a key may optionally be specified, in which case the value associated
with key in that column is changed (or added, if none exists), instead of the
entire map.

Without --if-exists, it is an error if record does not exist. With --if-exists,
this command does nothing if record does not exist.

[--if-exists] add table record column [key=]value...
Adds the specified value or key-value pair to column in record in table. If column
is a map, then key is required, otherwise it is prohibited. If key already exists
in a map column, then the current value is not replaced (use the set command to
replace an existing value).

Without --if-exists, it is an error if record does not exist. With --if-exists,
this command does nothing if record does not exist.

[--if-exists] remove table record column value...
[--if-exists] remove table record column key...
[--if-exists] remove table record column key=value...
Removes the specified values or key-value pairs from column in record in table.
The first form applies to columns that are not maps: each specified value is
removed from the column. The second and third forms apply to map columns: if only
a key is specified, then any key-value pair with the given key is removed,
regardless of its value; if a value is given then a pair is removed only if both
key and value match.

It is not an error if the column does not contain the specified key or value or
pair.

Without --if-exists, it is an error if record does not exist. With --if-exists,
this command does nothing if record does not exist.

[--if-exists] clear table record column...
Sets each column in record in table to the empty set or empty map, as appropriate.
This command applies only to columns that are allowed to be empty.

Without --if-exists, it is an error if record does not exist. With --if-exists,
this command does nothing if record does not exist.

[--id=@name] create table column[:key]=value...
Creates a new record in table and sets the initial values of each column. Columns
not explicitly set will receive their default values. Outputs the UUID of the new
row.

If @name is specified, then the UUID for the new row may be referred to by that
name elsewhere in the same vtep-ctl invocation in contexts where a UUID is
expected. Such references may precede or follow the create command.

Caution (ovs-vsctl as exmaple)
Records in the Open vSwitch database are significant only when they can be
reached directly or indirectly from the Open_vSwitch table. Except for
records in the QoS or Queue tables, records that are not reachable from the
Open_vSwitch table are automatically deleted from the database. This
deletion happens immediately, without waiting for additional ovs-vsctl
commands or other database activity. Thus, a create command must generally
be accompanied by additional commands within the same ovs-vsctl invocation
to add a chain of references to the newly created record from the top-level
Open_vSwitch record. The EXAMPLES section gives some examples that show how
to do this.

[--if-exists] destroy table record...
Deletes each specified record from table. Unless --if-exists is specified, each
records must exist.

--all destroy table
Deletes all records from the table.

Caution (ovs-vsctl as exmaple)
The destroy command is only useful for records in the QoS or Queue tables.
Records in other tables are automatically deleted from the database when
they become unreachable from the Open_vSwitch table. This means that
deleting the last reference to a record is sufficient for deleting the
record itself. For records in these tables, destroy is silently ignored.
See the EXAMPLES section below for more information.

wait-until table record [column[:key]=value]...
Waits until table contains a record named record whose column equals value or, if
key is specified, whose column contains a key with the specified value. Any of the
operators !=, <, >, <=, or >= may be substituted for = to test for inequality, less
than, greater than, less than or equal to, or greater than or equal to,
respectively. (Don't forget to escape < or > from interpretation by the shell.)

If no column[:key]=value arguments are given, this command waits only until record
exists. If more than one such argument is given, the command waits until all of
them are satisfied.

Caution (ovs-vsctl as exmaple)
Usually wait-until should be placed at the beginning of a set of ovs-vsctl
commands. For example, wait-until bridge br0 -- get bridge br0 datapath_id
waits until a bridge named br0 is created, then prints its datapath_id
column, whereas get bridge br0 datapath_id -- wait-until bridge br0 will
abort if no bridge named br0 exists when ovs-vsctl initially connects to the
database.

Consider specifying --timeout=0 along with --wait-until, to prevent vtep-ctl from
terminating after waiting only at most 5 seconds.

comment [arg]...
This command has no effect on behavior, but any database log record created by the
command will include the command and its arguments.

EXIT STATUS

       0      Successful program execution.

       1      Usage, syntax, or configuration file error.

       2      The switch argument to ps-exists specified the name of a physical switch that  does
              not exist.

NAME

SYNOPSIS

DESCRIPTION

OPTIONS

COMMANDS

EXIT STATUS

SEE ALSO