Thursday, June 23, 2016

Replace a file in Puppet only if the file exists

Replace file in Puppet only if the file exists. So i have this question from my colleague. It sounds simple right? but it is not.

Some says that use exec with onlyif but it produces warning/errors logs if the file doesn't exist. In which functionality, it will suffice your needs, but you will have this warning logs.

This is the workaround that i've done:

file { '/tmp/file01.txt':    source => "puppet:///modules/common/custommodule/file01.txt",    owner => 'root',    group => 'root',    mode => '0640',  }

  exec {"copy_file01":    command => "/usr/bin/diff /tmp/file01.txt /var/tmp/file01.txt; if [ $? -ne 0 ]; then /bin/cp /tmp/file01.txt /var/tmp/file01.txt; fi",     require=> File['/tmp/file01.txt'],    onlyif => "/usr/bin/test -e /var/tmp/file01.txt",

two things that this will accomplish:

1. It will not replace or copy the file if the file doesn't exists. Where as if I use "file" type in puppet, it will create the file regardless if it exists or not.
2. If the file changes in puppet it will replace the existing file in the client. Test will be done by the diff command.

The only disadvantage of this, is that it will create a file under a directory. 

Thursday, May 26, 2016

My local vagrant config

Just leaving my local lab vagrant config here

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure(2) do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at

  # Every Vagrant development environment requires a box. You can search for
  # boxes at = "centos66"

  # Disable automatic box update checking. If you disable this, then
  # boxes will only be checked for updates when the user runs
  # `vagrant box outdated`. This is not recommended.
  # config.vm.box_check_update = false

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine. In the example below,
  # accessing "localhost:8080" will access port 80 on the guest machine.
  # "forwarded_port", guest: 80, host: 8080

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  # "private_network", ip: ""

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  # "public_network" :public_network, :public_network => "wlan0"

  # Share an additional folder to the guest VM. The first argument is
  # the path on the host to the actual folder. The second argument is
  # the path on the guest to mount the folder. And the optional third
  # argument is a set of non-required options.
  # config.vm.synced_folder "../data", "/vagrant_data"

  # Provider-specific configuration so you can fine-tune various
  # backing providers for Vagrant. These expose provider-specific options.
  # Example for VirtualBox:
  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  # View the documentation for the provider you are using for more
  # information on available options.

  # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
  # such as FTP and Heroku are also available. See the documentation at
  # for more information.
  # config.push.define "atlas" do |push|
  # end

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
  # config.vm.provision "shell", inline: <<-SHELL
  #   sudo apt-get update
  #   sudo apt-get install -y apache2

config.vm.define "centos01" do |centos01|
centos01.vm.hostname = "centos01.lab.local" :private_network, ip: ""
config.vm.define "centos02" do |centos02|
centos02.vm.hostname = "centos02.lab.local" :private_network, ip: ""

Wednesday, May 25, 2016

Restore OSX Timemachine backup files in Linux

copy the script from

chmod +x

 ~/Documents/ /media/popoy/Seagate/Backups.backupdb/Popoy’s\ MacBook\ Pro/Latest/Macintosh\ HD/Users/popoy/Downloads ~/Documents/Downloads