Julian C. Dunn juliandunn
juliandunn
/ output.txt
Created
August 15, 2014 03:40
How do you set a node attribute to the value of stdout from a shell command?
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| % chef-apply -l info recipe.rb | |
| [2014-08-14T23:38:46-04:00] INFO: Run List is [] | |
| [2014-08-14T23:38:46-04:00] INFO: Run List expands to [] | |
| Recipe: (chef-apply cookbook)::(chef-apply recipe) | |
| * ruby_block[demo] action run[2014-08-14T23:38:46-04:00] INFO: Processing ruby_block[demo] action run ((chef-apply cookbook)::(chef-apply recipe) line 2) | |
| [2014-08-14T23:38:46-04:00] INFO: ruby_block[demo] called | |
| - execute the ruby block demo | |
| * log[demo] action write[2014-08-14T23:38:46-04:00] INFO: Processing log[demo] action write ((chef-apply cookbook)::(chef-apply recipe) line 9) | |
| [2014-08-14T23:38:46-04:00] INFO: Hello world |
juliandunn
/ makeomnibus.sh
Created
August 5, 2014 01:45
Initial revision of shell script to get thee an Omnibus on AIX
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| #!/bin/sh | |
| # Nuke and pave all the freeware RPMs | |
| rpm -qa | sed -e 's/\-[AIX Servers^\-]*\-[AIX Servers^\-]*$//' | egrep -v '(AIX-rpm|zlib|gettext)' | xargs rpm -e | |
| # Get all deps for wget | |
| perl -e 'use LWP::Simple; getprint($ARGV[0]);' ftp://www.oss4aix.org/rpmdb/deplists/aix61/wget-1.15-1.aix5.1.ppc.deps > /tmp/wget-1.15-1.aix5.1.ppc.deps | |
| while read i; do | |
| perl -e 'use LWP::Simple; getprint($ARGV[0]);' ftp://www.oss4aix.org/everything/RPMS/${i} > /tmp/${i} |
juliandunn
/ get-ruby-compile-options.sh
Created
July 24, 2014 12:35
how to get compile type options and compiler, etc. from Ruby
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| ruby -r rbconfig -r pp -e 'pp RbConfig::CONFIG' |
juliandunn
/ mtr-fios.txt
Last active
August 29, 2015 14:04
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| Start: Mon Jul 21 20:22:01 2014 | |
| HOST: borkbork.nyc.urbandecoder.n Loss% Snt Last Avg Best Wrst StDev | |
| 1.|-- nectar.nyc.urbandecoder.n 0.0% 25 0.9 2.1 0.8 12.7 2.9 | |
| 2.|-- l100.nycmny-vfttp-59.veri 0.0% 25 5.3 8.5 4.8 32.2 7.2 | |
| 3.|-- g0-1-3-3.nycmny-lcr-21.ve 4.0% 25 16.6 11.9 8.5 16.6 2.2 | |
| 4.|-- ae3-0.ny325-bb-rtr2.veriz 0.0% 25 19.9 17.7 7.2 59.9 14.9 | |
| 5.|-- ??? 100.0 25 0.0 0.0 0.0 0.0 0.0 | |
| 6.|-- 0.ae2.br3.nyc4.alter.net 0.0% 25 7.9 9.3 7.4 16.4 2.0 | |
| 7.|-- 204.255.168.66 0.0% 25 9.9 10.7 7.8 26.5 4.0 | |
| 8.|-- ??? 100.0 25 0.0 0.0 0.0 0.0 0.0 |
juliandunn
/ default.rb
Created
July 12, 2014 03:20
example of using Chefspec to make assertions about guards
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| # Recipe code | |
| service 'true_guard' do | |
| action :start | |
| only_if { File.exist?('/tmp/trueguard') } | |
| end | |
| service 'false_guard' do | |
| action :start | |
| not_if { File.exist?('/tmp/falseguard') } |
juliandunn
/ exploring-rubys-object-model.rb
Last active
August 29, 2015 14:03
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| irb(main):001:0> Class.class | |
| => Class | |
| irb(main):002:0> Class.superclass | |
| => Module | |
| irb(main):003:0> Module.superclass | |
| => Object | |
| irb(main):004:0> Object.superclass | |
| => BasicObject | |
| irb(main):005:0> BasicObject.superclass | |
| => nil |
juliandunn
/ cli-uis-need-ux-too.txt
Created
June 12, 2014 14:01
C'mon man, command-line UIs are UIs too
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| borkbork ~$ s3cmd mb jdunn-getchef-foo | |
| ERROR: Parameter problem: Expecting S3 URI with just the bucket name set instead of 'jdunn-getchef-foo' | |
| borkbork ~$ s3cmd mb s3://jdunn-getchef-foo | |
| Bucket 's3://jdunn-getchef-foo/' created |
juliandunn
/ monkeypatch-nil.rb
Created
June 11, 2014 19:44
Monkeypatching NilClass to clarify what the heck is meant by "NoMethodError: undefined method `[]' for nil:NilClass"
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| class NilClass | |
| def [] | |
| raise "What the hell, dawg, you can't access an element of nil" | |
| end | |
| def [](a) | |
| raise "What the hell, dawg, you can't access element #{a} of nil" | |
| end | |
| end |
juliandunn
/ attributes-reused-as-guards.rb
Created
May 31, 2014 19:44
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| node.default['demo'] = true | |
| node.default['demoagain'] = false | |
| ruby_block 'whee' do | |
| block do | |
| puts 'Ohai, world' | |
| end | |
| not_if { node['demo'] } | |
| end |
juliandunn
/ devopsdays-pgh-bad-wifi.txt
Created
May 29, 2014 15:07
Much sadness - pinging default gateway on pitt wifi
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| fq-guest-wireless-pittnet-150-212-95-96 ~$ ping 150.212.94.1 | |
| PING 150.212.94.1 (150.212.94.1): 56 data bytes | |
| Request timeout for icmp_seq 0 | |
| Request timeout for icmp_seq 1 | |
| 64 bytes from 150.212.94.1: icmp_seq=0 ttl=255 time=2079.387 ms | |
| Request timeout for icmp_seq 3 | |
| 64 bytes from 150.212.94.1: icmp_seq=1 ttl=255 time=3054.474 ms | |
| 64 bytes from 150.212.94.1: icmp_seq=2 ttl=255 time=2520.698 ms | |
| 64 bytes from 150.212.94.1: icmp_seq=3 ttl=255 time=1846.184 ms | |
| 64 bytes from 150.212.94.1: icmp_seq=4 ttl=255 time=949.714 ms |