bodsch

An Ansible summary

Jon Warbrick, July 2014, V3.2 (for Ansible 1.7)

Configuration file

intro_configuration.html

First one found from of

bodsch

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

bodsch

#!/usr/bin/env bash

group_name="$1"
var_name="$2"
var_value="$3"

./create_dynamic_vars_db.py

sqlite3 dynamic_vars.db "INSERT OR REPLACE INTO group_vars ( group_name, var_name, var_value ) VALUES ( '${group_name}', '${var_name}', '${var_value}' );"

bodsch

#!/bin/sh
#
# About
# -----
# This script sends simple system-metrics to a remote graphite server.
#
#
# Metrics
# -------
# The metrics currently include the obvious things such as:

bodsch

Ansible vault example

New in Ansible 1.5, “Vault” is a feature of ansible that allows keeping sensitive data such as passwords or keys in encrypted files, rather than as plaintext in your playbooks or roles. These vault files can then be distributed or placed in source control. To enable this feature, a command line tool, ansible-vault is used to edit files, and a command line flag –ask-vault-pass or –vault-password-file is used. Alternately, you may specify the location of a password file or command Ansible to always prompt for the password in your ansible.cfg file. These options require no command line flag usage.

Requirements

• ansible > 1.5
• openssl
• inventory file
• host_vars or group_vars
• ansible directory best practices structure

bodsch

get_latest_release() {
  curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
    grep '"tag_name":' |                                            # Get tag line
    sed -E 's/.*"([^"]+)".*/\1/'                                    # Pluck JSON value
}

# Usage
# $ get_latest_release "creationix/nvm"
# v0.31.4

bodsch

find -type f -size +3M -print0 | while IFS= read -r -d '' i; do
  #echo $i
  echo -n '.'
  if grep -q "$i" md5-partial.txt; then
    echo -n ':'; #-e "\n$i  ---- Already counted, skipping.";
    continue;
  fi
  #md5sum "$i" >> md5.txt
  MD5=`dd bs=1M count=1 if="$i" status=none | md5sum`
  MD5=`echo $MD5 | cut -d' ' -f1`

bodsch

#!/usr/bin/env bash

# consider if the server is passing a file like

while true; do nc -l 10000 <<<"hi"; done 

# on our client side, we can consume this using nc

nc 10.0.0.1 10000

bodsch

#!/usr/bin/env python
# -*- coding: utf-8 -*-


def archive_to_bytes(archive):
    def to_seconds(s):
        SECONDS_IN_A = {
            's': 1,
            'm': 1 * 60,
            'h': 1 * 60 * 60,

bodsch

# delete local tag '12345'
git tag -d 12345
# delete remote tag '12345' (eg, GitHub version too)
git push origin :refs/tags/12345
# alternative approach
git push --delete origin tagName
git tag -d tagName