jonatanblue / error_masking_inside_if.sh

Last active August 23, 2022 07:49

	#!/usr/bin/env bash

	set -o pipefail -o errtrace -o errexit -o nounset
	shopt -s inherit_errexit

	[[ -n "${TRACE:-}" ]] && set -o xtrace

	trap 'stacktrace "Error trapped rc=${PIPESTATUS[@]}, see trace above"' ERR

	stacktrace() {

jonatanblue / neo4j_example.py

Created February 25, 2022 11:47

	#!/usr/bin/env python3

	from neo4j import GraphDatabase
	import logging
	import os
	import time
	import signal
	from neo4j.exceptions import ServiceUnavailable

	class App:

jonatanblue / ubuntu_troubleshooting_tools.sh

Last active July 2, 2021 12:56

Things I install on Ubuntu containers for troubleshooting

	# procps - for ps
	# net-tools - for netstat

	apt update && apt install -y procps telnet net-tools curl less vim

jonatanblue / disk_write_rate.sh

Last active June 28, 2017 09:37

	#!/bin/bash
	grep_this=xvda1; d1=0; d2=0; while true; do d1=$(df \| grep ${grep_this} \| awk '{ print $4 }'); sleep 1; d2=$(df \| grep ${grep_this} \| awk '{ print $4 }'); diff=$(( ${d1} - ${d2} )); echo $diff; done

jonatanblue / sed_or_grep_a_stream.sh

Created April 26, 2017 13:34

sed or grep a stream

	# grep
	tail -f file \| grep --line-buffered my_pattern

	# sed
	stdbuf -o0 tail -f /var/log/syslog \| sed 's/Dec/LOOL/'

	# credits:
	# Thanks to @amblina for collecting these.

jonatanblue / docker_py_to_docker.md

Last active July 18, 2019 12:15

Resolve docker-py older version naming conflict

Problem

When running docker-compose I get this error:

docker-compose --version
> ERROR: Dependency conflict: an older version of the 'docker-py' package is polluting the namespace. Run the following command to remedy the issue:
> pip uninstall docker docker-py; pip install docker

jonatanblue / export_secret_variable.sh

Last active March 8, 2017 11:00

Export secret variable on the command line without writing to history

	#!/bin/bash
	#
	# Set a secret environment variable on the command line without saving it in history:
	export MY_TOKEN="$(read token && echo ${token})"
	# type/paste secret value
	echo ${MY_TOKEN}
	# value is echoed

jonatanblue / move_folder_between_projects.sh

Created February 27, 2017 18:17

Move a folder from one Git project to another preserving history

	# Clone repo 1
	git clone repo1
	cd repo1

	# Use subtree on the folder you want to move
	git subtree split -P dir1 -b split-dir1-branch

	# Check out branch and move files
	git checkout split-dir1-branch
	mkdir dir1

jonatanblue / terraform_ecs_elb_error.log

Created July 24, 2016 10:30

terraform command output

	#### Output from `terraform plan`:

	$ terraform plan
	Refreshing Terraform state prior to plan...

	aws_ecs_cluster.example_cluster: Refreshing state... (ID: arn:aws:ecs:us-east-1:123456789012:cluster/example-cluster)
	aws_iam_role.ecs_instance: Refreshing state... (ID: ecs-instance)
	aws_iam_role.ecs_service_role: Refreshing state... (ID: ecs-service-role)
	aws_ecs_task_definition.sinatra_backend: Refreshing state... (ID: sinatra-backend)
	aws_security_group.ecs_instance: Refreshing state... (ID: sg-432b2038)

jonatanblue / weave-scope-on-gcloud

Created April 30, 2016 11:18

	#Pre-req: install gcloud (Google Cloud CLI)

	PROJECT_NAME=${1}
	CLUSTER_NAME=kubernetes-lab-1
	GOOGLE_REGION=europe-west1-d
	brew update
	brew install kubernetes-cli
	brew install gcloud
	gcloud config set project $PROJECT_NAME
	gcloud config set compute/zone $GOOGLE_REGION

Jonatan jonatanblue

Problem