Sumit Das RustyNails8

How to get a list of failed or unreachable hosts

This is in response to this stackoverflow question The solution was posted by Vladimir Botka.

YouTube walkthough here

When Ansible runs, it's great for setting up and configuring servers as per your playbooks and roles. But have you ever needed to collect a list of failed hosts where Ansible wasn't able to connect to them? In this demo I'm going to show you how to collect a list of failed and unreachable hosts.

My setup:

I'm simply using a list of servers that don't exist, along with one remote server that I can get to.

Pimping Up Your PowerShell & Cmder with Posh-Git, Oh-My-Posh, & Powerline Fonts

Backstory (TLDR)

I work as a full-stack developer at work. We are a Windows & Azure shop, so we are using Windows as our development platform, hence this customization.

For my console needs, I am using Cmder which is based on ConEmu with PowerShell as my shell of choice.

Yes, yes, I know nowadays you can use the Linux subsystem on Windows 10 which allow you to run Ubuntu on Windows. If you are looking for customization of the Ubuntu bash shell, check out this article by Scott Hanselman.

Mercurial Commands

Commands	Description
hg pull	get latest changes like git pull use flags like -u IDK why yet
hg add	only for new files
hg commit	add changes to commit with -m for message just like git
hg addremove	adds new files and removes file not in your file system
hg incoming	see changes commited by others
hg outgoing	see local commits

Branching

Quick Legend

Description, Instructions, Notes

Instance	Branch

	#!/usr/bin/env python3
	# Print world clock in terminal
	# (c) Copyright 2022 by Joseph Reagle
	# Licensed under the GPLv3, see <http://www.gnu.org/licenses/gpl-3.0.html>
	#
	# replacing: https://superuser.com/questions/164339/timezone-conversion-by-command-line

	import argparse # http://docs.python.org/dev/library/argparse.html
	import sys

	#!/usr/bin/env bash


	if [ "$AWS_PROFILE" = "" ]; then
	echo "No AWS_PROFILE set"
	exit 1
	fi


	for region in $(aws ec2 describe-regions --region eu-west-1 \| jq -r .Regions[].RegionName); do

	#GET A LIST OF INSTANCES
	#/usr/sap/hostctrl/exe/saphostctrl -function Listinstances -format Script

	#GET A LIST of databases
	saphostctrl -nr 99 -function Listdatabases

	# manage a db with the host agent
	# /usr/sap/hostctrl/exe/saphostctrl -nr 99 -function StopDatabase -dbname NPL -dbtype ada -user sapadm passwd

	#query a db with the host agent

	#!/usr/bin/env bash

	LOG_PATH="/home/$(whoami)/log/speedtest.log"

	if result=$(/usr/bin/speedtest --simple); then
	parsed_result=$(printf "${result}\"" \| sed ':a;N;$!ba;s/\n/" /g' \| sed 's/: /="/g')
	printf "[$(date)] ${parsed_result}\n" >> "${LOG_PATH}"
	else
	printf "[$(date)] error\n" >> "${LOG_PATH}"
	exit 1

	<#
	.SYNOPSIS
	The synopsis goes here. This can be one line, or many.
	This version of the template has inbuilt functions to capture credentials and store it securely for reuse
	Avoids the need to have plaintext passwords in the script

	.DESCRIPTION
	The description is usually a longer, more detailed explanation of what the script or function does.
	Take as many lines as you need.