Forum Discussion
immu
Altostratus
AltostratusHow to Check logs on F5 for troubleshooting purpose.
Please let me know how do we check logs on F5 for troubleshooting purpose
editors note: Updating the link (Removing a redirect) to the new MyF5 home for same. -lz
---
I'd suggest to check the MyF5 article - K16197: Reviewing BIG-IP log files
https://my.f5.com/manage/s/article/K16197It covers the log reviewing basis of various interfaces and includes tmsh examples/videos for time filtering. Thanks.
immuAltostratus
AltostratusReally appreciate the answers give by all...but if I need to filter the logs for one particular day and time then how can do it..
Thanks in advance
JRahm
Admin
AdminIf you want particular days, say March 9th-10th, from the command line:
tmsh show /sys log ltm range 2021-03-09--2021-03-10
If you want the last couple of days:
tmsh show /sys log ltm range now-2d
Or if you want specific times on a particular day, say March 10th between 6-8am, you might just hit the log file directly with grep:
[root@ltm3:Active:Standalone] log # grep ^Mar.10.0[68].* /var/log/ltm
Mar 10 06:51:29 ltm3 warning tmm1[45470]: 01010040:4: Clock has unexpectedly adjusted by 3624277 ms
Mar 10 06:51:30 ltm3 notice tmm[45470]: 01010029:5: Clock advanced by 1204 ticks
Mar 10 06:51:31 ltm3 warning tmm[45470]: 01010040:4: Clock has unexpectedly adjusted by 3624277 ms
Mar 10 08:04:55 ltm3 warning tmm[45470]: 01010040:4: Clock has unexpectedly adjusted by 26551016 ms
Mar 10 08:04:57 ltm3 warning tmm1[45470]: 01010040:4: Clock has unexpectedly adjusted by 26551016 ms