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

#!/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

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

bodsch

An Ansible summary

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

Configuration file

intro_configuration.html

First one found from of

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- name: schedule downtime
  uri:
    url: "https://{{ icinga_host }}:{{ icinga_port | default(5665) }}/v1/actions/schedule-downtime"
    user: "{{ icinga_user }}"
    password: "{{ icinga_password }}"
    force_basic_auth: True
    validate_certs: False
    method: POST
    headers:
      Accept: "application/json"

bodsch

Transparent proxy for Docker containers

If the Docker host is placed inside a proxy server, it needs to add the proxy configuration to each Dockerfile such as ENV http_proxy.

Following allows transparent access from the container to outside without any proxy configuration.

1. Set up the transparent proxy
2. Apply iptables rule for the transparent proxy

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global
	log /dev/log	local0
	log /dev/log	local1 notice
	chroot /var/lib/haproxy
	stats socket /run/haproxy/admin.sock mode 660 level admin
	stats timeout 30s
	user haproxy
	group haproxy
	daemon
	maxconn 2048

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---
### ref: https://stackoverflow.com/questions/48825583/in-ansible-how-do-you-change-a-existing-dictionary-hash-values-using-a-variable
- name: replace the value of dictionary variable
  hosts: localhost
  gather_facts: no
  vars:
    fact_process:
      cmd_check: ok
      cmd_name: node1
      cmd_status: error

bodsch

#!/usr/bin/python

#
# LICENSE: MIT
#
# Copyright (C) 2014 Samuel Stauffer
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to
# deal in the Software without restriction, including without limitation

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# Code licensed LGPLv3 by Jérémie Lumbroso <lumbroso@cs.princeton.edu>

import difflib
import itertools
import textwrap
import typing


def side_by_side(
    left: typing.List[str],