Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Windows File Share Monitor SMB CIFS

Problem this snippet solves: This external monitor performs a health check of a Windows file share using CIFS/Samba. There is an inbuilt SMB monitor for LTM. However, GTM does not (yet?) have this. ...
Published Mar 12, 2015
Version 1.0
bash
steve2's avatar
steve2
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Jan 25, 2017

I am trying to use this script on a GTM running 11.6, without much luck. The config of the monitor is below, I have made sure the external monitor file is on all prober pool members (which are 2 GTMs that are in this cluster). It is marked down and I get no debugs in the ltm log file. Any clues?

 

the GTM log file reports:

 

Monitor instance /Common/MON-EXTERNAL-CSMACSRV-30 1.2.3.4:445 UNKNOWN_MONITOR_STATE --> DOWN from 1.2.3.4 (state returned down)

 

SNMP_TRAP: VS VIP-CSMACSRV01-445 (ip:port=1.2.3.4:445) (Server /Common/server1) state change blue --> red ( Monitor /Common/MON-EXTERNAL-CSMACSRV-30 from 10.16.4.5 : state returned down)

 

gtm monitor external /Common/MON-EXTERNAL-CSMACSRV-30 { defaults-from /Common/external description "External Monitor to check NAS File Share" destination : interval 30 probe-timeout 5 run /Common/smb_monitor.bash timeout 121 user-defined DEBUG 1 user-defined FILE /CS_Storage/F5GTMTST.txt user-defined PASSWORD password user-defined SEARCH_STRING up user-defined USERNAME domain\admin >>>I have tried including and excluding the domain<<<