Forum Discussion
zzhang39
Altostratus
AltostratusError in REST https call to get the Auth token v15.1.8
Hi All, We upgraded F5 on May 18,2024 from v12.1.3 to v15.1.8 we trying to get auth token from /mgmt/shared/authn/login But getting 401 error, please find the detailed error message. Can any one...
Lucas_Thompson
Employee
EmployeeThe REST subsystem in BIG-IP can sometimes suffer from low user space RAM, especially with large configurations. Also there is an upgrade process that occurs immediately after booting into a new version.
It may help to change Management Provisioning to Large:
Restjavad can sometimes get into a "stuck" state where the worker processes suffer continuous timeout errors. The log files (/var/log/restjavad*) offer evidence of this behavior: search for the term "timeout" in those files.
zzhang39Altostratus
AltostratusLucas_Thompson
We already set to Large.
for " The log files (/var/log/restjavad*) offer evidence of this behavior: search for the term "timeout" in those files"
Can you please advise how do we access that log? looks like no-one clear on our team.
- Lucas_Thompson
Sure. The REST log files can be reviewed using bash like in this video:
You can change the log level to increase or decrease the amount of logging:
https://my.f5.com/manage/s/article/K15436
This article talks about the exact names of those log files and gives some example commands:
https://my.f5.com/manage/s/article/K64371928
Finally, it may help to become familiar with Linux logging generally, as Linux is the host operating system used on BIG-IP and there are many log files that contain useful information. Here's Ubuntu's comprehensive article that should help:
https://help.ubuntu.com/community/LinuxLogFiles