/usr/share/openvswitch/scripts/ovs-ctl is in openvswitch-switch 1.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Copyright (C) 2009, 2010, 2011, 2012 Nicira Networks, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
case $0 in
*/*) dir0=`echo "$0" | sed 's,/[^/]*$,,'` ;;
*) dir0=./ ;;
esac
. "$dir0/ovs-lib" || exit 1
for dir in "$sbindir" "$bindir" /sbin /bin /usr/sbin /usr/bin; do
case :$PATH: in
*:$dir:*) ;;
*) PATH=$PATH:$dir ;;
esac
done
## ----- ##
## start ##
## ----- ##
insert_openvswitch_mod_if_required () {
# If openvswitch_mod is already loaded then we're done.
test -e /sys/module/openvswitch_mod && return 0
# Load openvswitch_mod. If that's successful then we're done.
action "Inserting openvswitch module" modprobe openvswitch_mod && return 0
# If the bridge module is loaded, then that might be blocking
# openvswitch_mod. Try to unload it, if there are no bridges.
test -e /sys/module/bridge || return 1
bridges=`echo /sys/class/net/*/bridge | sed 's,/sys/class/net/,,g;s,/bridge,,g'`
if test "$bridges" != "*"; then
log_warning_msg "not removing bridge module because bridges exist ($bridges)"
return 1
fi
action "removing bridge module" rmmod bridge || return 1
# Try loading openvswitch_mod again.
action "Inserting openvswitch module" modprobe openvswitch_mod
}
insert_brcompat_mod_if_required () {
test -e /sys/module/brcompat_mod && return 0
action "Inserting brcompat module" modprobe brcompat_mod
}
insert_mod_if_required () {
insert_openvswitch_mod_if_required || return 1
if test X"$BRCOMPAT" = Xyes; then
insert_brcompat_mod_if_required || return 1
fi
}
ovs_vsctl () {
ovs-vsctl --no-wait --timeout=5 "$@"
}
ovsdb_tool () {
ovsdb-tool -vANY:console:off "$@"
}
create_db () {
action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA"
}
upgrade_db () {
schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"`
if test ! -e "$DB_FILE"; then
log_warning_msg "$DB_FILE does not exist"
install -d -m 755 -o root -g root `dirname $DB_FILE`
create_db
elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" != Xno; then
# Back up the old version.
version=`ovsdb_tool db-version "$DB_FILE"`
cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'`
backup=$DB_FILE.backup$version-$cksum
action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1
# Compact database. This is important if the old schema did not enable
# garbage collection (i.e. if it did not have any tables with "isRoot":
# true) but the new schema does. In that situation the old database
# may contain a transaction that creates a record followed by a
# transaction that creates the first use of the record. Replaying that
# series of transactions against the new database schema (as "convert"
# does) would cause the record to be dropped by the first transaction,
# then the second transaction would cause a referential integrity
# failure (for a strong reference).
#
# Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't
# understand some feature of the schema used in the OVSDB version that
# we're downgrading from, so we don't give up on error.
action "Compacting database" ovsdb_tool compact "$DB_FILE"
# Upgrade or downgrade schema.
if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then
:
else
log_warning_msg "Schema conversion failed, using empty database instead"
rm -f "$DB_FILE"
create_db
fi
fi
}
set_system_ids () {
set ovs_vsctl set Open_vSwitch .
OVS_VERSION=`ovs-vswitchd --version | sed 's/.*) //;1q'`
set "$@" ovs-version="$OVS_VERSION"
case $SYSTEM_ID in
random)
id_file=$etcdir/system-id.conf
uuid_file=$etcdir/install_uuid.conf
if test -e "$id_file"; then
SYSTEM_ID=`cat "$id_file"`
elif test -e "$uuid_file"; then
# Migrate from old file name.
. "$uuid_file"
SYSTEM_ID=$INSTALLATION_UUID
echo "$SYSTEM_ID" > "$id_file"
elif SYSTEM_ID=`uuidgen`; then
echo "$SYSTEM_ID" > "$id_file"
else
log_failure_msg "missing uuidgen, could not generate system ID"
fi
;;
'')
log_failure_msg "system ID not configured, please use --system-id"
;;
*)
;;
esac
set "$@" external-ids:system-id="\"$SYSTEM_ID\""
if test X"$SYSTEM_TYPE" != X; then
set "$@" system-type="\"$SYSTEM_TYPE\""
else
log_failure_msg "no default system type, please use --system-type"
fi
if test X"$SYSTEM_VERSION" != X; then
set "$@" system-version="\"$SYSTEM_VERSION\""
else
log_failure_msg "no default system version, please use --system-version"
fi
action "Configuring Open vSwitch system IDs" "$@" $extra_ids
}
start () {
if test X"$FORCE_COREFILES" = Xyes; then
ulimit -Sc 67108864
fi
insert_mod_if_required || return 1
if daemon_is_running ovsdb-server; then
log_success_msg "ovsdb-server is already running"
else
# Create initial database or upgrade database schema.
upgrade_db || return 1
# Start ovsdb-server.
set ovsdb-server "$DB_FILE"
set "$@" -vANY:CONSOLE:EMER -vANY:SYSLOG:ERR -vANY:FILE:INFO
set "$@" --remote=punix:"$DB_SOCK"
set "$@" --remote=db:Open_vSwitch,manager_options
set "$@" --private-key=db:SSL,private_key
set "$@" --certificate=db:SSL,certificate
set "$@" --bootstrap-ca-cert=db:SSL,ca_cert
start_daemon "$OVSDB_SERVER_PRIORITY" "$@" || return 1
# Initialize database settings.
ovs_vsctl -- init -- set Open_vSwitch . db-version="$schemaver" \
|| return 1
set_system_ids || return 1
if test X"$DELETE_BRIDGES" = Xyes; then
for bridge in `ovs_vsctl list-br`; do
ovs_vsctl del-br $bridge
done
fi
fi
if daemon_is_running ovs-vswitchd; then
log_success_msg "ovs-vswitchd is already running"
else
# Increase the limit on the number of open file descriptors.
# ovs-vswitchd needs 16 per datapath, plus a few extra, so this
# should allow for 256 (or more) bridges.
ulimit -n 5000
# Start ovs-vswitchd.
set ovs-vswitchd unix:"$DB_SOCK"
set "$@" -vANY:CONSOLE:EMER -vANY:SYSLOG:ERR -vANY:FILE:INFO
if test X"$MLOCKALL" != Xno; then
set "$@" --mlockall
fi
start_daemon "$OVS_VSWITCHD_PRIORITY" "$@"
fi
if daemon_is_running ovs-brcompatd; then
log_success_msg "ovs-brcompatd is already running"
elif test X"$BRCOMPAT" = Xyes; then
set ovs-brcompatd
set "$@" -vANY:CONSOLE:EMER -vANY:SYSLOG:ERR -vANY:FILE:INFO
start_daemon "$OVS_BRCOMPATD_PRIORITY" "$@"
fi
}
## ---- ##
## stop ##
## ---- ##
stop () {
stop_daemon ovs-brcompatd
stop_daemon ovs-vswitchd
stop_daemon ovsdb-server
}
## ----------------- ##
## force-reload-kmod ##
## ----------------- ##
internal_interfaces () {
# Outputs a list of internal interfaces:
#
# - There is an internal interface for every bridge, whether it
# has an Interface record or not and whether the Interface
# record's 'type' is properly set or not.
#
# - There is an internal interface for each Interface record whose
# 'type' is 'internal'.
#
# But ignore interfaces that don't really exist.
for d in `(ovs_vsctl --bare \
-- --columns=name find Interface type=internal \
-- list-br) | sort -u`
do
if test -e "/sys/class/net/$d"; then
printf "%s " "$d"
fi
done
}
save_interfaces () {
"$datadir/scripts/ovs-save" $ifaces > "$script"
}
force_reload_kmod () {
ifaces=`internal_interfaces`
action "Detected internal interfaces: $ifaces" true
stop
script=`mktemp`
trap 'rm -f "$script"' 0 1 2 13 15
if action "Saving interface configuration" save_interfaces; then
:
else
log_warning_msg "Failed to save configuration, not replacing kernel module"
start
exit 1
fi
chmod +x "$script"
for dp in `ovs-dpctl dump-dps`; do
action "Removing datapath: $dp" ovs-dpctl del-dp "$dp"
done
if test -e /sys/module/brcompat_mod; then
action "Removing brcompat module" rmmod brcompat_mod
fi
if test -e /sys/module/openvswitch_mod; then
action "Removing openvswitch module" rmmod openvswitch_mod
fi
start
action "Restoring interface configuration" "$script"
rc=$?
if test $rc = 0; then
level=debug
else
level=err
fi
log="logger -p daemon.$level -t ovs-save"
$log "force-reload-kmod interface restore script exited with status $rc:"
$log -f "$script"
}
## --------------- ##
## enable-protocol ##
## --------------- ##
enable_protocol () {
# Translate the protocol name to a number, because "iptables -n -L" prints
# some protocols by name (despite the -n) and therefore we need to look for
# both forms.
#
# (iptables -S output is more uniform but old iptables doesn't have it.)
protonum=`grep "^$PROTOCOL[ ]" /etc/protocols | awk '{print $2}'`
if expr X"$protonum" : X'[0-9]\{1,\}$' > /dev/null; then :; else
log_failure_msg "unknown protocol $PROTOCOL"
return 1
fi
name=$PROTOCOL
match="(\$2 == \"$PROTOCOL\" || \$2 == $protonum)"
insert="iptables -I INPUT -p $PROTOCOL"
if test X"$DPORT" != X; then
name="$name to port $DPORT"
match="$match && /dpt:$DPORT/"
insert="$insert --dport $DPORT"
fi
if test X"$SPORT" != X; then
name="$name from port $SPORT"
match="$match && /spt:$SPORT/"
insert="$insert --sport $SPORT"
fi
insert="$insert -j ACCEPT"
if (iptables -n -L INPUT) >/dev/null 2>&1; then
if iptables -n -L INPUT | awk "$match { n++ } END { exit n == 0 }"
then
# There's already a rule for this protocol. Don't override it.
log_success_msg "iptables already has a rule for $name, not explicitly enabling"
else
action "Enabling $name with iptables" $insert
fi
elif (iptables --version) >/dev/null 2>&1; then
action "cannot list iptables rules, not adding a rule for $name"
else
action "iptables binary not installed, not adding a rule for $name"
fi
}
## ---- ##
## main ##
## ---- ##
set_defaults () {
SYSTEM_ID=
DELETE_BRIDGES=no
BRCOMPAT=no
DAEMON_CWD=/
FORCE_COREFILES=yes
MLOCKALL=yes
OVSDB_SERVER_PRIORITY=-10
OVS_VSWITCHD_PRIORITY=-10
OVS_BRCOMPATD_PRIORITY=-10
DB_FILE=$etcdir/conf.db
DB_SOCK=$rundir/db.sock
DB_SCHEMA=$datadir/vswitch.ovsschema
PROTOCOL=gre
DPORT=
SPORT=
if (lsb_release --id) >/dev/null 2>&1; then
SYSTEM_TYPE=`lsb_release --id -s`
system_release=`lsb_release --release -s`
system_codename=`lsb_release --codename -s`
SYSTEM_VERSION="${system_release}-${system_codename}"
else
SYSTEM_TYPE=unknown
SYSTEM_VERSION=unknown
fi
}
usage () {
set_defaults
cat <<EOF
$0: controls Open vSwitch daemons
usage: $0 [OPTIONS] COMMAND
This program is intended to be invoked internally by Open vSwitch startup
scripts. System administrators should not normally invoke it directly.
Commands:
start start Open vSwitch daemons
stop stop Open vSwitch daemons
status check whether Open vSwitch daemons are running
version print versions of Open vSwitch daemons
load-kmod insert modules if not already present
force-reload-kmod save OVS network device state, stop OVS, unload kernel
module, reload kernel module, start OVS, restore state
enable-protocol enable protocol specified in options with iptables
help display this help message
One of the following options is required for "start" and "force-reload-kmod":
--system-id=UUID set specific ID to uniquely identify this system
--system-id=random use a random but persistent UUID to identify this system
Other important options for "start" and "force-reload-kmod":
--system-type=TYPE set system type (e.g. "XenServer")
--system-version=VERSION set system version (e.g. "5.6.100-39265p")
--external-id="key=value"
add given key-value pair to Open_vSwitch external-ids
--delete-bridges delete all bridges just before starting ovs-vswitchd
Less important options for "start" and "force-reload-kmod":
--daemon-cwd=DIR set working dir for OVS daemons (default: $DAEMON_CWD)
--no-force-corefiles do not force on core dumps for OVS daemons
--no-mlockall do not lock all of ovs-vswitchd into memory
--ovsdb-server-priority=NICE set ovsdb-server's niceness (default: $OVSDB_SERVER_PRIORITY)
--ovs-vswitchd-priority=NICE set ovs-vswitchd's niceness (default: $OVS_VSWITCHD_PRIORITY)
--ovs-brcompatd-priority=NICE set ovs-brcompatd's niceness (default: $OVS_BRCOMPATD_PRIORITY)
Options for "start", "force-reload-kmod", "load-kmod", "status", and "version":
--brcompat enable Linux bridge compatibility module and daemon
File location options:
--db-file=FILE database file name (default: $DB_FILE)
--db-sock=SOCKET JSON-RPC socket name (default: $DB_SOCK)
--db-schema=FILE database schema file name (default: $DB_SCHEMA)
Options for "enable-protocol":
--protocol=PROTOCOL protocol to enable with iptables (default: gre)
--sport=PORT source port to match (for tcp or udp protocol)
--dport=PORT ddestination port to match (for tcp or udp protocol)
Other options:
-h, --help display this help message
-V, --version display version information
Default directories with "configure" option and environment variable override:
logs: /var/log/openvswitch (--log-dir, OVS_LOGDIR)
pidfiles and sockets: /var/run/openvswitch (--run-dir, OVS_RUNDIR)
system configuration: /etc (--sysconfdir, OVS_SYSCONFDIR)
data files: /usr/share/openvswitch (--pkgdatadir, OVS_PKGDATADIR)
user binaries: /usr/bin (--bindir, OVS_BINDIR)
system binaries: /usr/sbin (--sbindir, OVS_SBINDIR)
Please report bugs to bugs@openvswitch.org (see REPORTING-BUGS for details).
EOF
exit 0
}
set_option () {
var=`echo "$option" | tr abcdefghijklmnopqrstuvwxyz- ABCDEFGHIJKLMNOPQRSTUVWXYZ_`
eval set=\${$var+yes}
eval old_value=\$$var
if test X$set = X || \
(test $type = bool && \
test X"$old_value" != Xno && test X"$old_value" != Xyes); then
echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
return
fi
eval $var=\$value
}
daemons () {
echo ovsdb-server ovs-vswitchd
if test X"$BRCOMPAT" = Xyes; then
echo ovs-brcompatd
fi
}
set_defaults
extra_ids=
command=
for arg
do
case $arg in
-h | --help)
usage
;;
-V | --version)
echo "$0 (Open vSwitch) $VERSION$BUILDNR"
exit 0
;;
--external-id=*)
value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
case $value in
*=*)
extra_ids="$extra_ids external-ids:$value"
;;
*)
echo >&2 "$0: --external-id argument not in the form \"key=value\""
exit 1
;;
esac
;;
--[a-z]*=*)
option=`expr X"$arg" : 'X--\([^=]*\)'`
value=`expr X"$arg" : 'X[^=]*=\(.*\)'`
type=string
set_option
;;
--no-[a-z]*)
option=`expr X"$arg" : 'X--no-\(.*\)'`
value=no
type=bool
set_option
;;
--[a-z]*)
option=`expr X"$arg" : 'X--\(.*\)'`
value=yes
type=bool
set_option
;;
-*)
echo >&2 "$0: unknown option \"$arg\" (use --help for help)"
exit 1
;;
*)
if test X"$command" = X; then
command=$arg
else
echo >&2 "$0: exactly one non-option argument required (use --help for help)"
exit 1
fi
;;
esac
done
case $command in
start)
start
;;
stop)
stop
;;
status)
rc=0
for daemon in `daemons`; do
daemon_status $daemon || rc=$?
done
exit $rc
;;
version)
for daemon in `daemons`; do
$daemon --version
done
;;
force-reload-kmod)
force_reload_kmod
;;
load-kmod)
insert_mod_if_required
;;
enable-protocol)
enable_protocol
;;
help)
usage
;;
'')
echo >&2 "$0: missing command name (use --help for help)"
exit 1
;;
*)
echo >&2 "$0: unknown command \"$command\" (use --help for help)"
exit 1
;;
esac
|