gtm monitor tcp-half-open
gtm monitor tcp-half-open(1) BIG-IP TMSH Manual gtm monitor tcp-half-open(1)
NAME
tcp-half-open - Configures a Transmission Control Protocol (TCP) Half
Open monitor.
MODULE
gtm monitor
SYNTAX
Configure the tcp-half-open component within the gtm monitor module
using the syntax in the following sections.
CREATE/MODIFY
create tcp-half-open [name]
modify tcp-half-open [name]
options:
defaults-from [name]
description [string]
destination [ [ ipv4 address[:port] ] | [ ipv6 address[.port] ] ]
ignore-down-response [enabled | disabled]
interval [integer]
probe-attempts [integer])
probe-interval [integer])
probe-timeout [integer]
timeout [integer]
transparent [disabled | enabled]
edit tcp-half-open [ [ [name] | [glob] | [regex] ] ... ]
options:
all-properties
non-default-properties
DISPLAY
list tcp-half-open
list tcp-half-open [ [ [name] | [glob] | [regex] ] ... ]
show running-config tcp-half-open
show running-config tcp-half-open [ [ [name] | [glob] | [regex] ] ... ]
options:
all-properties
non-default-properties
one-line
partition
DELETE
delete tcp-half-open [name]
Note: You cannot delete default monitors.
DESCRIPTION
You can use the tcp-half-open component to configure a custom monitor,
or you can use the default TCP Half Open monitor that the Global
Traffic Manager provides.
For more information about configuring monitors, refer to the
Configuration Guide for BIG-IP(r) Global Traffic Management.
EXAMPLES
create tcp-half-open my_tcp-half-open defaults-from tcp_half_open
Creates a monitor named my_tcp-half-open that inherits properties from
the default TCP Half Open monitor.
list tcp-half-open
Displays the properties of all of the TCP Half Open monitors.
OPTIONS
defaults-from
Specifies the name of the monitor from which you want your custom
monitor to inherit settings. The default value is tcp_half_open.
description
User defined description.
destination
Specifies the IP address and service port of the resource that is
the destination of this monitor. The default value is *:*.
Possible values are:
*:* Specifies to perform a health check on the IP address and
port supplied by a pool member.
*:port
Specifies to perform a health check on the server with the IP
address supplied by the pool member and the port you specify.
IP address:port
Specifies to mark a pool member up or down based on the
response of the server at the IP address and port you
specify.
IP address:port (with the transparent option enabled)
Specifies to perform a health check on the server at the IP
address and port you specify, route the check through the IP
address and port supplied by the pool member, and mark the
pool member (the gateway) up or down accordingly.
glob Displays the items that match the glob expression. See help glob
for a description of glob expression syntax.
ignore-down-response
Specifies whether the monitor ignores a down response from the
system it is monitoring. The default value is disabled.
interval
Specifies the frequency at which the system issues the monitor
check. The default value is 30 seconds.
name Specifies a unique name for the component. This option is required
for the commands create, delete, and modify.
partition
Displays the administrative partition within which the component
resides.
probe-attempts
Specifies the number of times the BIG-IP system attempts to probe
the host server, after which the BIG-IP system considers the host
server down or unavailable. The default value is 3.
probe-interval
Specifies the frequency at which the BIG-IP system probes the host
server. The default value is 1.
probe-timeout
Specifies the number of seconds after which the BIG-IP system
times out the probe request to the BIG-IP system. The default
value is 5 seconds.
regex
Displays the items that match the regular expression. The regular
expression must be preceded by an at sign (@[regular expression])
to indicate that the identifier is a regular expression. See help
regex for a description of regular expression syntax.
timeout
Specifies the number of seconds the target has in which to respond
to the monitor request. The default value is 120 seconds.
If the target responds within the set time period, it is
considered up. If the target does not respond within the set time
period, it is considered down. Also, if the target responds with a
RESET packet, the system immediately flags the target as down
without waiting for the timeout interval to expire.
transparent
Specifies whether the monitor operates in transparent mode.
Monitors in transparent mode can monitor pool members through
firewalls. The default value is disabled.
SEE ALSO
create, delete, edit, glob, gtm pool, gtm server, list, modify, regex,
show, tmsh
COPYRIGHT
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recording, or information storage and retrieval systems, for any
purpose other than the purchaser's personal use, without the express
written permission of F5 Networks, Inc.
F5 Networks and BIG-IP (c) Copyright 2008-2010. All rights reserved.
BIG-IP 2017-08-15 gtm monitor tcp-half-open(1)