Dave Cottlehuber dch

Application specific host grouping in Riemann-dash

It is generally desirable to group all the hosts for a specific service into a single dashboard view. For example, all the web servers are in single view while all the database servers are in another view.

This is usually not an issue when you are sending custom metrics using Riemann client. However, there are cases where you are using something that you do not control how the metrics are being sent. i.e., Riemann-tools.

Since Riemann-tools scripts are application agnostic, in order for the dashboard view to group hosts, we must inject some application specific information into the tags field. Tags is a collection of arbitrary strings. In the case of Riemann-tools scripts you can pass in arbitrary strings on the command line.

riemann-health --host 127.0.0.1 --tag "prod" --tag "webserver"

Building Riak on SmartOS, the hard way

Build Machine

Here is some information on the build machine I'm using for reference:

Dataset
```
$ dsadm list
```

UUID OS PUBLISHED URN

If you prefer VirtualBox or aren't running OS X, here are some instructions and a script to help you get started with SmartOS under VirtualBox. If you use VirtualBox, skip the first section and read the section on how to get the Node.js SmartMachine up and running.

Running SmartOS under vmware Fusion

Start by downloading the latest live image
When you run the new VM wizard, select "Continue without disk" on the first screen of the wizard.
Select Sun Solaris / Solaris 10 64-bit on the next screen.
You're going to get dumped to a config screen when the live image starts up, choose DHCP for the networking and defaults for everything else.
Pretty much the first thing you're going to want to do is figure out how to SSH into the box once it boots and creates its storage pools, because trying to do stuff in the virtual console is miserable. There's no cut and paste

	#!/bin/bash
	# A simple script to backup an organization's GitHub repositories.

	GHBU_BACKUP_DIR=${GHBU_BACKUP_DIR-"github-backups"} # where to place the backup files
	GHBU_ORG=${GHBU_ORG-"<CHANGE-ME>"} # the GitHub organization whose repos will be backed up
	# (if you're backing up a user's repos instead, this should be your GitHub username)
	GHBU_UNAME=${GHBU_UNAME-"<CHANGE-ME>"} # the username of a GitHub account (to use with the GitHub API)
	GHBU_PASSWD=${GHBU_PASSWD-"<CHANGE-ME>"} # the password for that account
	GHBU_GITHOST=${GHBU_GITHOST-"github.com"} # the GitHub hostname (see comments)
	GHBU_PRUNE_OLD=${GHBU_PRUNE_OLD-true} # when `true`, old backups will be deleted

	APPDIRS := $(wildcard apps/*)

	## Example hack to filter one out:
	## APPDIRS := $(filter-out apps/fooapp, $(APPDIRS))

	define PROXY_TARGET
	$(1):
	$(foreach appdir,$(APPDIRS),$(MAKE) -C $(appdir) $(1) ;)
	endef

	#!/usr/bin/env bash


	# Note: erlang depends on ncurses, openssl at a minimum

	usage ()
	{
	echo "usage: $0 <release> <type>"
	echo " release: R14B01\|R14B02\|R14B03\|R14B04\|R15B\|R15B01\|R15B02\|R15B03\|R16B\|R16B01\|R16B02"
	echo " type: normal, opt, gcov, gprof, debug, valgrind, or lcnt"

	{module, prealloc_bin}. %% version = 0

	{exports, [{module_info,0},{module_info,1},{new,1}]}.

	{attributes, []}.

	{labels, 7}.


	{function, new, 1, 2}.

	;;; File: emacs-indent-erlang
	;;; adapted from http://www.cslab.pepperdine.edu/warford/BatchIndentationEmacs.html

	;; this has to be set to the real path on your system
	(add-to-list 'load-path "~/.emacs.d/elpa/erlang-20131025.6")
	(load-library "erlang")

	;; comment out the call to untabify if you want the mixed tabs and spaces

	(defun emacs-indent-function ()

	export BOXNAME=smartos01
	export ISO=https://download.joyent.com/pub/iso/latest.iso

	# Download iso
	wget $ISO

	# Create VM
	VBoxManage createvm --name $BOXNAME --ostype OpenSolaris_64 --register
	VBoxManage modifyvm $BOXNAME --memory 1024 --hwvirtex on --hwvirtexexcl off --nestedpaging on --largepages on --vtxvpid on --accelerate3d off --boot1 dvd --boot2 disk --acpi on

	- name: Create two new GCE instances
	hosts: localhost
	gather_facts: no
	vars:
	names: tmp
	type: n1-standard-1
	image: debian-7
	zone: us-central1-a
	tasks:
	- name: Launch instances