NimbostratusAfter we upgraded BIG-IP to 12.1.0, Build 0.0.1434 last weekend, we started getting quite a lot of these errors in the apm log:
Jun 2 08:17:19 bigip-nnn err tmm[21193]: 01490514:3: (null):Common:00000000: Access encountered error: ERR_NOT_FOUND. File: ../modules/hudfilter/access/access_session.c, Function: access_session_delete, Line: 694
CirrostratusAre you in an HA pair?
EmployeeJun 2 08:17:19 bigip-nnn err tmm[21193]: 01490514:3: (null):Common:00000000: Access encountered error: ERR_NOT_FOUND. File: ../modules/hudfilter/access/access_session.c, Function: access_session_delete, Line: 694
One of the possibility of hitting this error message is, if a APM session is expired on the BIGIP and if a client tries to reconnect to the (now expired) session. In that case, it is bug id573611 (affected version: 12.1).
e.g. If client loses internet connection for whatever reasons and tries to reconnect back when that APM session on BIGIP is already expired, the above log will appear.
If your case is not matching with this symptom, then it may be due to other reasons.
To confirm that, can you post few more lines just before this error log?
CirrusI got alot of this issue on 12.1 hf1 (and some engineering hf) More logfiles:
2017-05-03 07:11:16 67bee28b /Common/citrix_xenapp_access_sync:Common:67bee28b: New session from client IP 11.11.11.41 (ST=Greater London/CC=GB/C=EU) at VIP 172.100.1.51 Listener /Common/ctxvip.fqdn.com (Reputation=Unknown) 2017-05-03 07:07:17 867c0cdf /Common/citrix_xenapp_access_sync::867c0cdf: Session statistics - bytes in: 3641, bytes out: 1269 2017-05-03 07:07:05 41da6973 /Common/citrix_xenapp_access_sync:Common:41da6973: Session statistics - bytes in: 8813, bytes out: 27070 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Received client info - Hostname: Type: IE Version: 11 Platform: Win7 CPU: WOW64 UI Mode: Full Javascript Support: 1 ActiveX Support: 1 Plugin Support: 0 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Webtop '/Common/citrix_xenapp_webtop' assigned 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Following rule 'Successful' from item 'AD Auth - xxx' to terminalout 'xxx' 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Access policy result: Full 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Username 'xxx\samaccountname' 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Connectivity resource '/Common/ctxcontroller.domain.local' assigned 2017-05-03 07:06:37 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Following rule 'fallback' from item 'Advanced Resource Assign - xxx' to ending 'Allow' 2017-05-03 07:06:35 867c0cdf /Common/citrix_xenapp_access_sync::867c0cdf: Session deleted due to user inactivity. 2017-05-03 07:06:26
(null):Common:00000000: Access encountered error: ERR_NOT_FOUND. File: ../modules/hudfilter/access/access_session.c, Function: access_session_delete, Line: 694 2017-05-03 07:06:26 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: Received User-Agent header: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko. 2017-05-03 07:06:26 f1b719ef /Common/citrix_xenapp_access_sync:Common:f1b719ef: New session from client IP 22.22.22.66 (ST=New South Wales/CC=AU/C=OC) at VIP 172.100.1.51 Listener /Common/ctxvip.fqdn.com (Reputation=Unknown) 2017-05-03 07:06:25 41da6973 /Common/citrix_xenapp_access_sync:Common:41da6973: Session deleted (internal_cause). 2017-05-03 07:06:17 19d7c2d4 /Common/citrix_xenapp_access_sync:Common:19d7c2d4: Received User-Agent header: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; AppInsights). 2017-05-03 07:06:17 19d7c2d4 /Common/citrix_xenapp_access_sync:Common:19d7c2d4: New session from client IP 11.11.11.41 (ST=Greater London/CC=GB/C=EU) at VIP 172.100.1.51 Listener /Common/ctxvip.fqdn.com (Reputation=Unknown) 2017-05-03 07:05:52 8ee8f1b2 /Common/citrix_xenapp_access_sync:Common:8ee8f1b2: Session statistics - bytes in: 1281500, bytes out: 3193782 2017-05-03 07:05:47 41da6973 /Common/citrix_xenapp_access_sync:Common:41da6973: Username 'xxx\samaccountname' 2017-05-03 07:05:17 8ee8f1b2 /Common/citrix_xenapp_access_sync:Common:8ee8f1b2: Session deleted (internal_cause). 2017-05-03 07:05:17 41da6973 /Common/citrix_xenapp_access_sync:Common:41da6973: Received User-Agent header: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko. 2017-05-03 07:05:17 41da6973 /Common/citrix_xenapp_access_sync:Common:41da6973: New session from client IP 22.22.22.66 (ST=New South Wales/CC=AU/C=OC) at VIP 172.100.1.51 Listener /Common/ctxvip.fqdn.com (Reputation=Unknown) 2017-05-03 07:02:08 20e57211 /Common/citrix_xenapp_access_sync::20e57211: Session statistics - bytes in: 34