Kernel messages output log level not as expected

SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server 12

When viewing the current effective loglevel values, the value in the first column (which represents the current console_loglevel value) is not set to the default or the intended value:

     # sysctl kernel.printk
     kernel.printk = 1    4    1    7

     #  cat /proc/sys/kernel/printk
     1    4    1    7

Remove the $klogConsoleLogLevel parameter setting or set it to the desired level.

This can be due to the presence of the $klogConsoleLogLevel parameter setting in the /etc/rsyslog.conf file.

All of the rsyslog versions shipped with the following versions of SUSE Linux Enterprise Server added the $klogConsoleLogLevel setting (with a value of 1) to the /etc/rsyslog.conf file:

With SUSE Linux Enterprise Server 15 SP4, versions of rsyslog prior to rsyslog-8.2106.0-150400.5.11.1 also added the $klogConsoleLogLevel parameter to /etc/rsyslog.conf

With rsyslog-8.2106.0-150400.5.11.1 and later versions, the $klogConsoleLogLevel parameter is removed during the installation of rsyslog.

Be aware that different quarterly releases of SLES 15 SP4 can contain different versions of programs including rsyslog e.g. :

All of the versions of rsyslog available for SLES 15 SP5 and later, do not set the $klogConsoleLogLevel parameter.

Note that even if the $klogConsoleLogLevel is present in the /etc/resyslog.conf file, it will only be applied if the systemd rsyslog.service was started at some point during the current running environment.

Note that if server management software is being used, it could be overwriting configuration files with versions that contain old, redundant or unwanted parameters, especially if the files being copied originated from older SLES versions.

Other useful information on the topic of loglevel:
      Syslog man pages: # man 2 syslog
      Temporarily changing kernel loglevel using dmesg: # man dmesg      (look @ -n, --console-level)
      Temporarily changing all loglevel values using echo: e.g.  # echo '3 4 1 7' > /proc/sys/kernel/printk
      Optional kernel.printk entry in /etc/sysctl.conf, used to permanently change loglevel values
                e.g.  Add line:  kernel.printk = 7 4 1 3
                to enable without a reboot use: # sysctl -p