Urjit Singh Bhatia urjitbhatia

## nomadTerminator.sh
#!/bin/bash
CMD="curl --write-out %{http_code} --silent --output /dev/null http://169.254.169.254/latest/meta-data/spot/termination-time"
while true
do
   if [ "$(${CMD})" != "404" ];    then
      # 2 minute warning received. Do all your cleanup work.
      echo "2 minute termination warning. Draining nomad node..."
      nomad node-drain -yes -self -enable
      echo "Hasta la vista baby, I will be back"
      break

## dnsquerylogger.sh
#!/bin/bash

# replace any with a specific interface you want to monitor or just use any to capture all interfaces
tcpdump -i any 'dst port 53' >> /var/log/dnsqueries.log

#### If using supervisord, use this template for setting up the program entry:
# [program:dnsworker]
# command=bash dnsquerylogger.sh
# autostart=true
# autorestart=true

## getec2lifecycle.sh
#!/bin/bash

aws ec2 describe-spot-instance-requests \
  --filters Name=instance-id,Values="$(wget -q -O - http://169.254.169.254/latest/meta-data/instance-id)" \
  --region us-east-1 | \
  jq -r '.SpotInstanceRequests | if length > 0 then "spot" else "normal" end'

## ptonline.sh
# Command to run pt online schema change
pt-online-schema-change \
   D=<dbname>,t=<table_name>,h=<hostname>,u=<username> \
   --alter="<alter sql>" \
   --ask-pass \
   --execute \
   --max-load 100 \
   --critical-load 120

## mysql_delete_chunked.sql
--- Simple table to keep track of delete chunks
create table _delete_log
(
    log       varchar(200) null,
    createdAt timestamp    null
);

------------ Stored proc definition ---------------
DROP PROCEDURE IF EXISTS delete_chunks;
DELIMITER $$

## custom_download_strategy.rb
require "json"
require "rexml/document"
require "time"
require "unpack_strategy"
require "lazy_object"
require "cgi"

class AbstractDownloadStrategy
  extend Forwardable
  include FileUtils

## bash_debug.sh
#!/bin/bash

# exit when any command fails
set -e

current_command=$BASH_COMMAND
last_command=""

# keep track of the last executed command
trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG

## get-dind-sibling-ip
$(docker inspect my-sibling-dind-container --format '{{ .NetworkSettings.IPAddress }}')

-- Make sure both run on the same "network" (bridge by default in most cases)

## makefile
### example for setting up a make workflow that can tag images based on the git tag
### the trailing ; are important: runs the commands in the same "shell" and the $$tag variable flows through

docker-build:
	@echo "Latest 3 tags: "; \
	git ls-remote --sort='v:refname' --tags ./. | tail -n 3; \
	read -p "Enter New Tag:" tag; \
	echo "Releasing new tag: $$tag"; \
	git tag $$tag; \
	git push origin $$tag -f; \

## bash_trap_example.sh
#!/usr/bin/env bash

###### ERROR TRAP - DONT WRITE OTHER COMMANDS BEFORE THIS  ############
set -eEx
function HANDLE_ERROR() {
  echo "SCRIPT FAILED"
  echo "FAILED AT: $(caller)"
  # Do any other commands here
  exit 1
}
	#!/bin/bash
	CMD="curl --write-out %{http_code} --silent --output /dev/null http://169.254.169.254/latest/meta-data/spot/termination-time"
	while true
	do
	if [ "$(${CMD})" != "404" ]; then
	# 2 minute warning received. Do all your cleanup work.
	echo "2 minute termination warning. Draining nomad node..."
	nomad node-drain -yes -self -enable
	echo "Hasta la vista baby, I will be back"
	break
	#!/bin/bash

	# replace any with a specific interface you want to monitor or just use any to capture all interfaces
	tcpdump -i any 'dst port 53' >> /var/log/dnsqueries.log

	#### If using supervisord, use this template for setting up the program entry:
	# [program:dnsworker]
	# command=bash dnsquerylogger.sh
	# autostart=true
	# autorestart=true
	#!/bin/bash

	aws ec2 describe-spot-instance-requests \
	--filters Name=instance-id,Values="$(wget -q -O - http://169.254.169.254/latest/meta-data/instance-id)" \
	--region us-east-1 \| \
	jq -r '.SpotInstanceRequests \| if length > 0 then "spot" else "normal" end'
	# Command to run pt online schema change
	pt-online-schema-change \
	D=<dbname>,t=<table_name>,h=<hostname>,u=<username> \
	--alter="<alter sql>" \
	--ask-pass \
	--execute \
	--max-load 100 \
	--critical-load 120
	--- Simple table to keep track of delete chunks
	create table _delete_log
	(
	log varchar(200) null,
	createdAt timestamp null
	);

	------------ Stored proc definition ---------------
	DROP PROCEDURE IF EXISTS delete_chunks;
	DELIMITER $$
	require "json"
	require "rexml/document"
	require "time"
	require "unpack_strategy"
	require "lazy_object"
	require "cgi"

	class AbstractDownloadStrategy
	extend Forwardable
	include FileUtils
	#!/bin/bash

	# exit when any command fails
	set -e

	current_command=$BASH_COMMAND
	last_command=""

	# keep track of the last executed command
	trap 'last_command=$current_command; current_command=$BASH_COMMAND' DEBUG
	$(docker inspect my-sibling-dind-container --format '{{ .NetworkSettings.IPAddress }}')

	-- Make sure both run on the same "network" (bridge by default in most cases)
	### example for setting up a make workflow that can tag images based on the git tag
	### the trailing ; are important: runs the commands in the same "shell" and the $$tag variable flows through

	docker-build:
	@echo "Latest 3 tags: "; \
	git ls-remote --sort='v:refname' --tags ./. \| tail -n 3; \
	read -p "Enter New Tag:" tag; \
	echo "Releasing new tag: $$tag"; \
	git tag $$tag; \
	git push origin $$tag -f; \
	#!/usr/bin/env bash

	###### ERROR TRAP - DONT WRITE OTHER COMMANDS BEFORE THIS ############
	set -eEx
	function HANDLE_ERROR() {
	echo "SCRIPT FAILED"
	echo "FAILED AT: $(caller)"
	# Do any other commands here
	exit 1
	}