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mcelog (22) Versions 2.1.1

Installs/Configures mcelog to catch and decode hardware errors from the Linux kernel

cookbook 'mcelog', '= 2.1.1', :supermarket
cookbook 'mcelog', '= 2.1.1'
knife supermarket install mcelog
knife supermarket download mcelog
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mcelog Cookbook

Cookbook Version
CI State

Installs and configures mcelog for decoding kernel hardware error messages on Linux.


This cookbook is maintained by the Sous Chefs. The Sous Chefs are a community of Chef cookbook maintainers working together to maintain important cookbooks. If you’d like to know more please visit or come chat with us on the Chef Community Slack in #sous-chefs.



  • Debian 9 (10+ does not include mcelog)
  • RHEL based distros 7+


  • Chef 12.15+


default - installs and configures mcelog


config options

  • default['mcelog']['cpu'] = nil
  • default['mcelog']['cpumhz'] = nil
  • default['mcelog']['filter'] = 'yes'
  • default['mcelog']['dmi'] = 'no'

logging options

  • default['mcelog']['syslog'] = 'yes'
  • default['mcelog']['syslog-error'] = 'yes'
  • default['mcelog']['logfile'] = '/var/log/mcelog' # this can only be used if syslog is not active
  • default['mcelog']['filter-memory-errors'] = 'no'
  • default['mcelog']['raw'] = 'no'

user/group settings

  • default['mcelog']['run-credentials-user'] = 'root'
  • default['mcelog']['run-credentials-group'] = 'root'
  • default['mcelog']['server']['client-user'] = 'root'
  • default['mcelog']['server']['client-group'] = 'root'

dimm monitoring settings

  • default['mcelog']['dimm']['dimm-tracking-enabled'] = 'yes'
  • default['mcelog']['dimm']['dmi-prepopulate'] = 'yes'
  • default['mcelog']['dimm']['uc-error-threshold'] = '1 / 24h'
  • default['mcelog']['dimm']['ce-error-threshold'] = '10 / 24h'

cpu monitoring settings

  • default['mcelog']['socket']['socket-tracking-enabled'] = 'yes'
  • default['mcelog']['socket']['mem-uc-error-threshold'] = '100 / 24h'
  • default['mcelog']['socket']['mem-ce-error-trigger'] = 'socket-memory-error-trigger'
  • default['mcelog']['socket']['mem-ce-error-threshold'] = '100 / 24h'
  • default['mcelog']['socket']['mem-ce-error-log'] = 'yes'

cpu cache settings

  • default['mcelog']['cache']['cache-threshold-trigger'] = 'cache-error-trigger'
  • default['mcelog']['cache']['cache-threshold-log'] = 'yes'

memory page settings

  • default['mcelog']['page']['memory-ce-threshold'] = '10 / 24h'
  • default['mcelog']['page']['memory-ce-log'] = 'yes'
  • default['mcelog']['page']['memory-ce-action'] = 'soft'

trigger settings

  • default['mcelog']['trigger']['children-max'] = 2
  • default['mcelog']['trigger']['directory'] = '/etc/mcelog'


Apply the default recipe to the node.


This project exists thanks to all the people who contribute.


Thank you to all our backers!


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Dependent cookbooks

This cookbook has no specified dependencies.

Contingent cookbooks

There are no cookbooks that are contingent upon this one.

mcelog Cookbook CHANGELOG

This file is used to list changes made in each version of the mcelog cookbook.

2.1.1 - 2021-06-01

2.1.0 - 2021-03-22

  • Cookstyle fixes
  • Sous Chefs Adoption

2.0.1 (2020-01-02)

  • Correct path of mcelog.conf for rhel fedora - @ashangit
  • Update specs to 16.04 - @tas50
  • Updates for cookstyle - @tas50

2.0.0 (2017-03-01)

  • Use ChefDK for test deps and not the Gemfile
  • Add Github issue and PR templates
  • Test using Local Delivery and not Rake
  • Move ownership over to Chef from tas50
  • Require Chef 12.1+

v1.0.0 (2016-01-31)

  • Add integration testing with Test Kitchen and kitchen-docker in Travis CI
  • Add support for RHEL 7
  • Bump the minimum RHEL release to 6 as 5 was actually broken before
  • Add inspec tests to ensure the service is started
  • Remove the attributes for service name and config dir and instead use helper methods


  • Use standard Chef .gitignore file
  • Add travis.yml file for testing
  • Remove use of hash rockets in the rubocop.yml file
  • Add a Berksfile
  • Add a Contributing doc
  • Update and breakout deps in the Gemfile
  • Add badges and requirements information to the readme
  • Add chefignore to limit what files are uploaded to the server
  • Add basic chefspec converge test
  • Add source_url and issues_url to metadata.rb
  • Add a changelog file

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