I've published a website through my LTM v11.3 using a slightly modified version of the f5.http_clientssl iApp. Shortly after, I noticed one of the static pages had an incorrect CSS file reference and amended it on the backend server. The change has not been reflected when accessing the site via the virtual server. I've tried reconfiguring the iApp, but that doesn't seem to have flushed the cache. I can't see any other obvious method for clearing the cache via the LTM GUI. The iApp has generated a 10MB 'caching profile' with the 'optimized-caching' parent profile. For the record, I've verified it's not caching the page in my browser by trying it on several machines with several browsers. The page is responding with the amendments when I access it directly via the backend server. We don't have any other applicable modules enabled that I can see, in particular Web Accelerator is unavailable. I tried the following from the terminal and got a response that it's not provisioned... wa_clear_cache WAM needs to be provisioned to clear the cache. Oddly, if I access the site via the virtual server IP address in my browser, the amendments come through.

It's been awhile since I've done this, but I think this is what you're looking for: SOL13255: Displaying and deleting Cache Setting entries from the command line (11.x) tmsh delete ltm profile ramcache [cache profile name]

Here you are (only a portion of the output, as it was too long): can you also post the delete command (and error) session log?

How does the LTM cache my site and how do I flush it?

12 Replies

Kevin_Stewart
Employee
Aug 23, 2013
It's been awhile since I've done this, but I think this is what you're looking for:

SOL13255: Displaying and deleting Cache Setting entries from the command line (11.x)

tmsh delete ltm profile ramcache [cache profile name]
JG
Cumulonimbus
Aug 31, 2013
I have got an error running this command on v11.3:

01070283:3: The profile (/APPLICATION/xxx_Web_Acceleration) is currently associated with one or more virtual servers.

nitass

Employee

Sep 01, 2013

01070283:3: The profile (/APPLICATION/xxx_Web_Acceleration) is currently associated with one or more virtual servers.

can you post the session log?

e.g.

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) list ltm profile web-acceleration mywebacc
ltm profile web-acceleration mywebacc {
    app-service none
    defaults-from webacceleration
}

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) show ltm profile ramcache mywebacc
Ltm::Ramcaches /Common/mywebacc

Host: 172.28.20.111
URI : /f5.gif
--------------------------------------
  Source Slot/TMM  1/1
  Owner Slot/TMM   1/1
  Rank             1

  Size (bytes)     4246
  Hits             50
  Received         2013-09-01 07:52:52
  Last Sent        2013-09-01 07:53:05
  Expires          2013-09-01 08:48:50
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

Host: 172.28.20.111
URI : /f5.gif
--------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             1

  Size (bytes)     4246
  Hits             50
  Received         2013-09-01 07:52:52
  Last Sent        2013-09-01 07:53:05
  Expires          2013-09-01 08:48:50
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none
Total records returned: 2

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) delete ltm profile ramcache mywebacc

root@(ve11a)(cfg-sync Changes Pending)(Active)(/Common)(tmos) show ltm profile ramcache mywebacc
Ltm::Ramcaches /Common/mywebacc
Total records returned: 0

Cumulonimbus

Sep 02, 2013

Here you are (only a portion of the output, as it was too long):

 list ltm profile web-acceleration xxx_Web_Acceleration
ltm profile web-acceleration xxx_Web_Acceleration {
    app-service none
    cache-aging-rate 9
    cache-client-cache-control-mode all
    cache-insert-age-header enabled
    cache-max-age 86400
    cache-max-entries 10000
    cache-object-max-size 2000000
    cache-object-min-size 0
    cache-size 100mb
    cache-uri-exclude { /owa/ev.owa uglobal.js oab.xml }
    cache-uri-include { .* }
    cache-uri-include-override none
    cache-uri-pinned none
    defaults-from /Common/optimized-caching
}

(tmos) show ltm profile ramcache xxx_Web_Acceleration Ltm::Ramcaches xxx_Web_Acceleration
Ltm::Ramcaches /APPLICATION/xxx_Web_Acceleration

Host: server_xxx
URI : /owa/14.3.146.0/scripts/premium/blank.htm
-----------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             1

  Size (bytes)     476
  Hits             5956
  Received         2013-09-01 14:13:56
  Last Sent        2013-09-02 01:53:18
  Expires          2013-09-02 14:13:55
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

Host: server_xxx
URI : /owa/14.2.342.3/scripts/premium/blank.htm
-----------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             2

  Size (bytes)     503
  Hits             2083
  Received         2013-08-30 08:34:17
  Last Sent        2013-08-30 13:59:01
  Expires          2013-08-31 08:34:16
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

Host: server_xxx
URI : /owa/14.2.342.3/themes/resources/owafont.css
--------------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             3

  Size (bytes)     5128
  Hits             1642
  Received         2013-08-30 08:34:06
  Last Sent        2013-08-30 14:02:11
  Expires          2013-08-31 08:34:06
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

Host: server_xxx
URI : /owa/14.3.146.0/themes/resources/owafont.css
--------------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             4

  Size (bytes)     5101
  Hits             1416
  Received         2013-09-01 14:15:02
  Last Sent        2013-09-02 01:53:09
  Expires          2013-09-02 14:15:02
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none


Host: server_xxx
URI : /owa/14.3.146.0/themes/resources/logon.css
------------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             5


  Size (bytes)     3227
  Hits             1333
  Received         2013-09-01 14:15:02
  Last Sent        2013-09-02 01:53:14
  Expires          2013-09-02 14:15:02
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

Host: server_xxx
URI : /owa/14.2.342.3/scripts/premium/flogon.js
-----------------------------------------------
  Source Slot/TMM  1/0
  Owner Slot/TMM   1/1
  Rank             6
  Size (bytes)     4519
  Hits             1329
  Received         2013-08-30 11:24:53
  Last Sent        2013-08-30 13:59:01
  Expires          2013-08-31 11:24:52
  Vary Type        none
  Vary Count       1
  Vary User Agent  none
  Vary Encoding    none

nitass
Employee
Sep 02, 2013
Here you are (only a portion of the output, as it was too long):

can you also post the delete command (and error) session log?

Cumulonimbus

Sep 02, 2013

(cfg-sync Changes Pending)(/S1-green-P:Active)(/APPLICATION)(tmos) delete ltm profile web-acceleration xxx_443_Web_Acceleration
01070283:3: The profile (/APPLICATION/xxx_443_Web_Acceleration) is currently associated with one or more virtual servers.

nitass
Employee
Sep 02, 2013
(cfg-sync Changes Pending)(/S1-green-P:Active)(/APPLICATION)(tmos) delete ltm profile web-acceleration xxx_443_Web_Acceleration

shouldn't it be "ramcache" keyword rather than "web-acceleration" one?
JG
Cumulonimbus
Sep 02, 2013
Ah I I ran a wrong comand. It should have been instead:

"delete ltm profile ramcache xxx_443_Web_Acceleration"
Drew_Northup
Nimbostratus
Sep 18, 2013
Well, has anybody thought that perhaps somebody would want to flush the cache without deleting the cache profile itself? Why should I pay for cache that cannot be flushed? None of the above is an answer to the original question, just more work for an admin.
Kevin_Stewart
Employee
Sep 18, 2013
Well, the tmsh delete ltm profile ramcache command doesn't delete the cache profile, just the records within.

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How does the LTM cache my site and how do I flush it?

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