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You may experience 2 up to 10 seconds "glitch time" when we restart MySQL. We expect to make these adjustments around 1AM Eastern Daylight Saving Time (EDT) US.


Linux Kernel Config Scopes within VM or Hypervisor


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Linux Kernel Config Scopes within VM or Hypervisor

In production we're going to deploy a redis server and need to set the overcommit_memory and disable Transparent Huge Pages in Kernel.

The issue is currently we only have one giant server, and it is to be shared by many other apps. We only want those kernel configs in the redis server. I wonder if we can achieve it by spinning up a dedicated VM for redis. Doing so in docker certainly doesn't make sense. My questions are:
  • Will those Kernel configs take actual effect in the redis VM even if the host OS doesn't have the same configs? I doubt it since the hardware resource is allocated by the host machine in the end.
  • Will the kernel config in the redis VM affect other VMs that run other apps? I think it won't, just want to confirm.
  • To achieve the goal, what kind of VM or hypervisor should we use?

If there's no way to do it in VM, is having a separate server (hardware) for redis the only way to go?

Last edited by RavinderSingh13; 02-19-2019 at 06:47 AM..
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Config::Any::INI(3)					User Contributed Perl Documentation				       Config::Any::INI(3)

NAME
Config::Any::INI - Load INI config files
DESCRIPTION
Loads INI files. Example: name=TestApp [Controller::Foo] foo=bar [Model::Baz] qux=xyzzy
METHODS
extensions( ) return an array of valid extensions ("ini"). load( $file ) Attempts to load $file as an INI file. requires_all_of( ) Specifies that this module requires Config::Tiny in order to work.
PACKAGE VARIABLES
$MAP_SECTION_SPACE_TO_NESTED_KEY (boolean) This variable controls whether spaces in INI section headings will be expanded into nested hash keys. e.g. it controls whether [Full Power] maps to $config->{'Full Power'} or $config->{'Full'}->{'Power'} By default it is set to 1 (i.e. true). Set it to 0 to preserve literal spaces in section headings: use Config::Any; use Config::Any::INI; $Config::Any::INI::MAP_SECTION_SPACE_TO_NESTED_KEY = 0;
AUTHORS
Brian Cassidy <bricas@cpan.org> Joel Bernstein <rataxis@cpan.org>
COPYRIGHT AND LICENSE
Copyright 2006-2013 by Brian Cassidy, portions copyright 2006, 2007 by Joel Bernstein This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
o Catalyst o Config::Any o Config::Tiny perl v5.18.2 2013-09-10 Config::Any::INI(3)

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