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Before:
# ip monitor help
Usage: ip monitor [ all | LISTofOBJECTS ] [ FILE ] [ label ] [all-nsid] [dev DEVICE]
LISTofOBJECTS := link | address | route | mroute | prefix |
neigh | netconf | rule | nsid
FILE := file FILENAME
After:
# ip monitor help
Usage: ip monitor [ all | LISTofOBJECTS ] [ FILE ] [ label ] [all-nsid] [dev DEVICE]
LISTofOBJECTS := link | address | route | mroute | prefix |
neigh | netconf | rule | nsid | nexthop
FILE := file FILENAME
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
134 lines
2.9 KiB
Groff
134 lines
2.9 KiB
Groff
.TH IP\-MONITOR 8 "13 Dec 2012" "iproute2" "Linux"
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.SH "NAME"
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ip-monitor, rtmon \- state monitoring
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.SH "SYNOPSIS"
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.sp
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.ad l
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.in +8
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.ti -8
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.BR "ip monitor" " [ " all " |"
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.IR OBJECT-LIST " ] ["
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.BI file " FILENAME "
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] [
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.BI label
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] [
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.BI all-nsid
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] [
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.BI dev " DEVICE "
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]
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.sp
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.SH OPTIONS
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.TP
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.BR "\-t" , " \-timestamp"
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Prints timestamp before the event message on the separated line in format:
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Timestamp: <Day> <Month> <DD> <hh:mm:ss> <YYYY> <usecs> usec
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<EVENT>
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.TP
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.BR "\-ts" , " \-tshort"
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Prints short timestamp before the event message on the same line in format:
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[<YYYY>-<MM>-<DD>T<hh:mm:ss>.<ms>] <EVENT>
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.SH DESCRIPTION
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The
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.B ip
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utility can monitor the state of devices, addresses
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and routes continuously. This option has a slightly different format.
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Namely, the
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.B monitor
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command is the first in the command line and then the object list follows:
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.BR "ip monitor" " [ " all " |"
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.IR OBJECT-LIST " ] ["
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.BI file " FILENAME "
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] [
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.BI label
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] [
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.BI all-nsid
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] [
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.BI dev " DEVICE "
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]
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.I OBJECT-LIST
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is the list of object types that we want to monitor.
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It may contain
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.BR link ", " address ", " route ", " mroute ", " prefix ", "
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.BR neigh ", " netconf ", " rule ", " nsid " and " nexthop "."
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If no
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.B file
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argument is given,
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.B ip
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opens RTNETLINK, listens on it and dumps state changes in the format
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described in previous sections.
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.P
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If the
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.BI label
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option is set, a prefix is displayed before each message to
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show the family of the message. For example:
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.sp
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.in +2
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[NEIGH]10.16.0.112 dev eth0 lladdr 00:04:23:df:2f:d0 REACHABLE
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[LINK]3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN group default
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link/ether 52:54:00:12:34:57 brd ff:ff:ff:ff:ff:ff
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.in -2
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.sp
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.P
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If the
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.BI all-nsid
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option is set, the program listens to all network namespaces that have a
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nsid assigned into the network namespace were the program is running.
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A prefix is displayed to show the network namespace where the message
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originates. Example:
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.sp
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.in +2
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[nsid 0]10.16.0.112 dev eth0 lladdr 00:04:23:df:2f:d0 REACHABLE
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.in -2
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.sp
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.P
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If the
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.BI file
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option is given, the program does not listen on RTNETLINK,
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but opens the given file, and dumps its contents. The file
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should contain RTNETLINK messages saved in binary format.
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Such a file can be generated with the
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.B rtmon
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utility. This utility has a command line syntax similar to
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.BR "ip monitor" .
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Ideally,
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.B rtmon
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should be started before the first network configuration command
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is issued. F.e. if you insert:
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.sp
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.in +8
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rtmon file /var/log/rtmon.log
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.in -8
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.sp
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in a startup script, you will be able to view the full history
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later.
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.P
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Nevertheless, it is possible to start
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.B rtmon
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at any time.
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It prepends the history with the state snapshot dumped at the moment
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of starting.
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.P
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If the
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.BI dev
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option is given, the program prints only events related to this device.
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.SH SEE ALSO
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.br
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.BR ip (8)
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.SH AUTHOR
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Original Manpage by Michail Litvak <mci@owl.openwall.com>
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.br
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Manpage revised by Nicolas Dichtel <nicolas.dichtel@6wind.com>
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