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I'm a banana.

Brian Hatfield bmhatfield

I'm a banana.
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Keybase proof

I hereby claim:

  • I am bmhatfield on github.
  • I am brianhatfield ( on keybase.
  • I have a public key whose fingerprint is 2DF5 8084 BCAC BB25 AA51 9650 FFD6 0508 E5D9 0536

To claim this, I am signing this object:

View gist:e49022dbea8013c3cef4
module StubbedSearch
def stubbed_search(index, query, stub)
# When running in the 'local' environment, dynamically set the hostname
# value for the search_stub to the hostname of the running VM
if node.chef_environment == 'local'
node.normal[:search_stub][stub] = node[:search_stub][stub].map do |n|
hsh = n.to_hash
hsh[:hostname] = node[:hostname]
View gist:5260740
; Expire old events from the index every 15 seconds.
(periodically-expire 10 {:keep-keys [:host :service :tags]})
(def rollup-ttl 60)
(def throttle-ttl 120)
(defn event-log [prefix]
(fn [e] (info prefix (str e))))
(def email (mailer {:from "riemann@domain"}))
View gist:5454382
time: 1366828063
service: "myservice"
host: ""
ttl: 300.0
attributes {
key: "zoinks"
value: "4"
attributes {
key: "forks"
View gist:6003399
var fields map[string]interface{} = make(map[string]interface{})
func main() {
fields["device"] = json.RawMessage(`{"OMG": 13}`)
jsn, err := json.Marshal(fields)
if err == nil {
} else {
bmhatfield / gist:8600671
Created Jan 24, 2014
Working Ohai Plugin
View gist:8600671
require_plugin "#{os}::network"
provides 'ipaddress'
if virtualization['system'] == 'vbox'
network['interfaces']['eth1']['addresses'].each do |ip, params|
if params['family'] == 'inet'
ipaddress ip
bmhatfield / ec2-security-group-rules
Created Mar 9, 2016
Output a human-readable & colorized view of your EC2 security group rules
View ec2-security-group-rules
#!/usr/bin/env ruby
require 'aws-sdk'
require 'colorize'
ec2 =
ec2.security_groups.sort_by{|s| s.group_name }.each do |sg|
puts sg.group_name.underline unless sg.ip_permissions.empty?
sg.ip_permissions.each do |perm|
bmhatfield / local_databag.rb
Created Mar 29, 2016
Encrypt, Edit and key-rotate databags.
View local_databag.rb
require 'chef/knife'
module LocalDatabags
class Encrypt < Chef::Knife
deps do
require 'chef/encrypted_data_bag_item'
banner "knife encrypt BAGNAME ITEM KEYFILE"
bmhatfield / check-recent-oom
Created Apr 16, 2016
A simple, time-based OOM check script for use with riemann-sumd
View check-recent-oom
# Run on a minutely basis by
LAST_OOM="$(grep 'Out of memory' /var/log/kern.log | tail -n 1)";
if [ -n "${LAST_OOM_TIME}" ]; then
if [ $(($((`date +%s` - `date --date="${LAST_OOM_TIME}" +%s`)) / 60 )) -le ${LAST_OOM_WINDOW} ]; then
echo "CRITICAL: OOM within last ${LAST_OOM_WINDOW} minutes!"
echo ${LAST_OOM}

How to use GPG/PGP to share passwords

Sometimes we need to transmit passwords over unsecured channels, like Slack or email. There are lots of password managers, but their password sharing functionality is less robust than I like. For example, 1Password lets you share passwords, but to do so you must share your entire keychain - which is not useful.

To solve this, we can use public/private keys to transmit messages over any channel, that can only be decrypted by the end user. This is stuff of the future! It seems like it would be complicated, but common use cases are very easy to set up and use!


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