stefanlasiewski

#!/bin/sh
# Shell script scripts to get hostnames from IPs and VIPs listed in ifconfig
# -------------------------------------------------------------------------
# Copyright (c) 2005 nixCraft project <http://cyberciti.biz/fb/>
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
# Based off of http://bash.cyberciti.biz/misc-shell/read-local-ip-address/

stefanlasiewski

#!/bin/sh

# Update MacPorts base to latest released version using 'selfupdate'
# Then upgrade all outdated ports (upgrade outdated), and uninstall old version of each port (-u)

# http://guide.macports.org/#using.common-tasks.updating
# http://guide.macports.org/#using.port.upgrade

# Can be called from Cron

stefanlasiewski

Add the following chunk to your existing ISC dhcpd.conf file.

if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.smidsrod.lan/bootstrap.ipxe";
}
else {
    filename "undionly.kpxe";
}

(or see https://gist.github.com/4008017 for a more elaborate setup

stefanlasiewski

#!/bin/sh

# Search the module path for all key values used in a hiera_array lookup, and then perform the equivalent of a hiera_array() from puppet.

# Borrowed from https://ask.puppetlabs.com/question/10999/hiera-how-can-i-tell-which-class-triggered-expected-array-and-got-nilclass/?answer=11006#post-id-11006

# The original:
# ```
# for y in $(for x in $(puppet config print modulepath | sed -e "s/:/ /g"); do grep -PIRho "(?<=hiera_array\(['|\"|$])([^'|^\"|^,|^\)]+)" $x; done); do echo hiera  -d -a -c $(puppet config print confdir)/hiera.yaml $y <key=value pairs as needed for your hiera.yaml>; done
# ```

stefanlasiewski

find /etc/puppet/hieradata/ -name "*.yaml" | while read file; do echo "file=$file"; ruby -e "require 'yaml'; YAML.load_file('$file')"; done

### Use case
[root@puppet3 hieradata]# find /etc/puppet/hieradata/ -name "*.yaml" | while read file; do echo "file=$file"; ruby -e "require 'yaml'; YAML.load_file('$file')"; done
file=/etc/puppet/hieradata/common.yaml
file=/etc/puppet/hieradata/virtual/vmware.yaml
file=/etc/puppet/hieradata/osfamily/Debian.yaml
file=/etc/puppet/hieradata/osfamily/RedHat.yaml
/usr/lib/ruby/1.8/yaml.rb:133:in `load': syntax error on line 4, col 26: `	vmwaretools::working_dir: /opt/vmware' (ArgumentError)
	from /usr/lib/ruby/1.8/yaml.rb:133:in `load'

stefanlasiewski

Following the example at http://docs.puppetlabs.com/hiera/1/complete_example.html

• How to print all elements in a Hiera array, per https://ask.puppetlabs.com/question/11181/why-doesnt-hiera-append-the-vmware-classs-to-my-classes-array/

• Printing Hiera arrays within Puppet

[root@puppet3 puppet]# puppet apply -e '$message = hiera_array(classes) notify { $message: }'
Notice: Compiled catalog for puppet3.example.org in environment production in 0.03 seconds
Notice: vmwaretoolsnn

stefanlasiewski

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

stefanlasiewski

# Compiled source #
###################
*.com
*.class
*.dll
*.exe
*.o
*.so

# Packages #

stefanlasiewski

[root@buildhost ~]# yum install ruby-devel gcc --quiet -y
[root@buildhost ~]# gem install fpm
Building native extensions.  This could take a while...
Successfully installed json-1.8.3
Successfully installed cabin-0.7.1
Successfully installed backports-3.6.4
Successfully installed arr-pm-0.0.10
Successfully installed childprocess-0.5.6
Successfully installed fpm-1.3.3
6 gems installed

stefanlasiewski

#!/bin/sh

# This example script will check to make sure that an earlier instance isn't already running before executing again.
# Useful for cronjobs that run every 5 minutes, and you don't want a backlog of processes piling up because of a slowness issue
# Borrowed from http://stackoverflow.com/questions/1440967/how-do-i-make-sure-my-bash-script-isnt-already-running
# Modified to work on FreeBSD as well as Linux

# Example usage:
#$ ./checkIfRunning.sh 
#Sleeping for 600 seconds.