miketheman

$ time RUBYOPT="-rprofile" rake knife
bundle exec knife cookbook test mycookbook -o cookbooks
  %   cumulative   self              self     total
 time   seconds   seconds    calls  ms/call  ms/call  name
  0.00     0.01      0.00        1     0.00    10.00  #toplevel
checking mycookbook
Running syntax check on mycookbook
Validating ruby files
Validating templates
  %   cumulative   self              self     total

miketheman

node.default['foo']['bar'] = nil

miketheman

---
driver_plugin: vagrant

platforms:
- name: ubuntu-12.04_chef_11.4.4
  driver_config:
    box: opscode_ubuntu-12.04_chef-11.4.4
    box_url: https://opscode-vm.s3.amazonaws.com/vagrant/opscode_ubuntu-12.04_chef-11.4.4.box
    require_chef_omnibus: 11.4.4
- name: ubuntu-12.04_chef_10.24.4

miketheman

# File dropped of by Chef, local modifications will be overwritten!

# 2013-05-08T00:00:02+00:00 10.87.125.117 haproxy[30746]: 10.44.133.138:39039 [07/May/2013:23:59:56.974] public dogdispatcher/i-5e4d843b:9000 4/0/5001/1002/6009 202 166 - - ---- 132/132/35/11/1 0/0 "POST /api/v1/series/?api_key=<redacted> HTTP/1.1"

# Field numbers, description, example
# Ref: https://code.google.com/p/haproxy-docs/wiki/HTTPLogFormat
# 1 (rsyslog) log time
# 2 (rsyslog) haproxy server
# 3   process_name '[' pid ']:'   haproxy[14389]:
# 4   client_ip ':' client_port   10.0.1.2:33317

miketheman

$ erubis outer-template.erb
bash -x -c '

echo $(date +%s) > /tmp/test-templates
echo "this is an outer template" >> /tmp/test-templates
'
bash -x -c '

echo "This is an inner template" >> /tmp/test-templates
echo "Some inner ruby: 25"

miketheman

#!/usr/bin/env ruby

#require 'bundler/setup'
require 'date'
require 'jiralicious'
require 'json'
require 'net/https'
require 'uri'

# Pass component name on command line as first argument

miketheman

import psutil

psutil.cpu_times()
# => cputimes(
#     user=4482262.9199999999,
#     nice=70491.440000000002,
#     system=717972.08999999997,
#     idle=25366818.309999999,
#     iowait=84943.889999999999,
#     irq=0.0,

miketheman

Adding 2 nodes to an existing 3-node ZooKeeper ensemble without losing the Quorum

Since many deployments may start out with 3 nodes and so little is known about how to grow a cluster from 3 memebrs to 5 members without losing the existing Quorum, here is an example of how this might be achieved.

In this example, all 5 nodes will be running on the same Vagrant host for the purpose of illustration, running on distinct configurations (ports and data directories) without the actual load of clients.

YMMV. Caveat usufructuarius.

Step 1: Have a healthy 3-node ensemble

miketheman

import datetime
import pprint

from dogapi import dog_http_api as api

api.api_key = 'somesecret'
api.application_key = 'yetanothersecret'

start_time = 1375940459
end_time   = 1375980459

miketheman

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
[default] Importing base box 'opscode_ubuntu-12.04_chef-11.4.4'...
[default] Matching MAC address for NAT networking...
[default] Setting the name of the VM...
[default] Clearing any previously set forwarded ports...
[default] Creating shared folders metadata...
[default] Clearing any previously set network interfaces...
[default] Preparing network interfaces based on configuration...
[default] Forwarding ports...