Re: Kernel - default log levels

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On 16/10/2020 18:57, Sven Kieske wrote:
> On Fr, 2020-10-16 at 15:27 +0200, David S. wrote:
>> My testing is currently on a standard Fedora 32 x86_64 running in
>> Digital Ocean (from their Fedora image pool).  It should be fairly
>> up-to-date (I see now there is a 5.8.15-201 kernel available).
>>
>> [root@davids-devtest-f32 ~]# uptime
>>  13:16:19 up 1 min,  1 user,  load average: 0.14, 0.04, 0.01
>> [root@davids-devtest-f32 ~]# uname -r
>> 5.8.14-200.fc32.x86_64
>> [root@davids-devtest-f32 ~]# cat /proc/sys/kernel/printk
>> 7	4	1	7
>> [root@davids-devtest-f32 ~]# grep LOGLEVEL_DEFAULT /boot/config-5.8.14-200.fc32.x86_64
>> CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
>> CONFIG_CONSOLE_LOGLEVEL_QUIET=3
>> CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4
>>
>> I see the same printk values and config settings in the 5.8.15-201.
>>
>> I also don't see any tweaks to the kernel cmdline, so I'm also wondering what
>> else can be setting these values.
> 
> For what it's worth, here is the output from my unaltered F32 installation
> as an additional data point (the kernel is slighty older):
> 
> uname -r
> 
> 5.8.13-200.fc32.x86_64
> 
> cat /proc/sys/kernel/printk
> 
> 3       4       1       7
> 
> 
> grep LOGLEVEL_DEFAULT /boot/config-$(uname -r)
> 
> CONFIG_CONSOLE_LOGLEVEL_DEFAULT=7
> 
> CONFIG_MESSAGE_LOGLEVEL_DEFAULT=4


Thanks for the input!  This is valuable.  I begin to wonder if Digital
Ocean has applied additional config tweaks now.  And I was a bit unclear
with "standard Fedora 32", as it is the Cloud edition.

But would be helpful to get some input on how these values can be
configured outside of the kernel config and kernel command line - if
alternative approaches exists.


-- 
kind regards,

David Sommerseth
OpenVPN Inc
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