Matthew Skelton matthewskelton

Founder at @ConfluxHQ | Co-author of @TeamTopologies

matthewskelton / flows_sanitised.json

Created October 24, 2017 18:47

Sample flow configuration for a Node-RED IoT application

	[{
	"id": "6ffd9e9e.4b3ea",
	"type": "tab",
	"label": "Flow 1"
	}, {
	"id": "d14dd126.35451",
	"type": "ttn app",
	"z": "",
	"appId": "matthewskelton-wutheringbytes-2017",
	"region": "eu",

matthewskelton / gist:5950922

Created July 8, 2013 17:50

Example of how ohai uses WMI under the hood to determine node data on Windows

	# From https://github.com/opscode/ohai/blob/master/lib/ohai/plugins/windows/uptime.rb e803a3f

	require 'ruby-wmi'

	provides "uptime", "uptime_seconds"

	uptime_seconds ::WMI::Win32_PerfFormattedData_PerfOS_System.find(:first).SystemUpTime.to_i
	uptime self._seconds_to_human(uptime_seconds)

matthewskelton / gist:5950649

Created July 8, 2013 17:12

Restore a WMI repository

	C:\>sc config winmgmt start= demand
	[SC] ChangeServiceConfig SUCCESS

	C:\>sc stop winmgmt
	SERVICE_NAME: winmgmt
	STATE : 3 STOP_PENDING
	...

	C:\>winmgmt /salvagerepository %windir%\System32\wbem
	WMI repository has been salvaged

matthewskelton / gist:5949341

Created July 8, 2013 14:33

chef-client output when WMI is not working on a Windows machine - 80041002 in SWbemLocator indicates that the WMI class is not found.

	[2013-07-04T11:29:12+01:00] DEBUG: Loading plugin windows::uptime
	[2013-07-04T11:29:12+01:00] DEBUG: Plugin windows::uptime threw exception #<WIN32OLERuntimeError: (in OLE method `ConnectServer': )
	OLE error code:80041002 in SWbemLocator
	Not found
	HRESULT error code:0x80020009
	Exception occurred.> C:/opscode/chef/embedded/lib/ruby/gems/1.9.1/gems/rdp-ruby-wmi-0.3.1/lib/ruby-wmi/base.rb:131
	:in `method_missing'
	C:/opscode/chef/embedded/lib/ruby/gems/1.9.1/gems/rdp-ruby-wmi-0.3.1/lib/ruby-wmi/base.rb:131:in `connection'
	C:/opscode/chef/embedded/lib/ruby/gems/1.9.1/gems/rdp-ruby-wmi-0.3.1/lib/ruby-wmi/base.rb:47:in `find_by_wql'

matthewskelton / gist:5046121

Created February 27, 2013 08:04

Outline of drawing an xmas tree with Graphite (see https://github.com/matthewskelton/GraphiteGreetings)

	require 'Graphite'
	require 'Logger'

	# Change these as needed for your environment
	server = "my.graphite.server.url"
	log = Logger.new(STDOUT)
	prefix = "Test.Me.XmasTree."

	# Create the logger to send stats to Graphite with specific timings
	logger = Graphite::Logger.new(server,log)