DESCRIPTION

Manage sysctl via a sysctl LWRP.

Attributes

Name	Value	Description
default[:sysctl][:values]	{}	Hash Of Key Value pairs the attribute_driver recipe uses.
default[:sysctl][:config_file]	rhel: "/etc/sysctl.conf" debian: "/etc/sysctl.d/99-chef.conf"	The file to write values to.

Recipes

Name	Description
attribute_driver.rb	Reads attributes set in node[:sysctl][:values], and sets sysctl resources with the values
default.rb	Simply sets up the resources needed to use the lwrp
library.rb	Empty recipe if you want to avoid default, but still want to explicitly include (for whatever reason)

Sysctl LWRP

Attributes

Name	Type	Default	Description
name	String	:name_attribute	The key name. Defaults to the resource name i.e. sysctl "some.key"
value	String, Fixnum, Integer	The Value for this key
save	boolean	true	save the setting back to the node data (default: false)

Actions

action	default	Description
:set	yes	Make sure the running state is set (default)
:write	yes	Write the config file (default)

Known Bugs

• RHEL/CentOS 6 now have sysctl.d Directory, we should generate a config in this dir instead
• only intended to be used on Linux

Example Usage

LWRP

Ensure running state, and write this key to sysctl.conf

sysctl "kernel.sysrq" do
   value 1
end

Check out [example/recipes/example.rb] 2 For more recipe examples.

ChefSpec Matchers

There are chefspec matchers in this cookbook to test your usage of the lwrp

set_sysctl

matcher for the set action

write_sysctl

matcher for the write action

Attributes

In a role attribute or override:

{
  "sysctl": {
    "values": {
     "net.ipv4.tcp_window_scaling": 0
    }
  }
}

Check out [example/attributes/example.rb] 1 For more attribute examples.

Author and License

Author Jesse Nelson spheromak@gmail.com

Copyright 2011-2013, Jesse Nelson

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.