how to stop logs

Hey F5Support!

The log message you are reffering to is most likely:

Feb 19 03:41:53 bigip01 warning tmm3[14520]: 01260009:4: Connection error: ssl_select_suite:8181: no shared ciphers (40)
Feb 19 03:41:53 bigip01 warning tmm3[14520]: 01260026:4: No shared ciphers between SSL peers x.x.x.x.40880:y.y.y.y.443.

Since version 12.x, SSL Debug Log information is automatically logged to /var/log/ltm.

K09322055: The BIG-IP system now logs debug SSL errors through standard logging

In order to turn this off, you need to modify the ssl log value from the default value "Warning" to "Error" which is the log level right above Warning. You do this by modifying the database value using the following tmsh command:

modify sys db log.ssl.level value Error

About the log levels

Remember that you do not need to save the configuration after modifying the database.

BIG-IP system database variables are automatically saved when modified

That will make the log messages disappear. However, it will now only log when it receives log entries classified under the "Error" level. But you can alter this in case you need to troubleshoot. 🙂

I hope this helps!