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@arnobroekhof
arnobroekhof / example_local_file.tf
Last active September 30, 2020 14:11
Terraform 0.11.x loop through a map and create files with content based on a maps --> key, value
variable "object_list" {
type = "map"
default = {
content1 = "this is example content 1",
content2 = "this is example content 2"
}
}
resource "local_file" "local_files" {
count = "${length(var.object_list)}" # perform this action based on the amount of items in the map
@kwoods
kwoods / get-stack-name.sh
Last active October 15, 2019 10:49
Get EC2 Instance's Stack Name
#!/bin/bash
REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document|grep region|awk -F\" '{print $4}')
INSTANCE_ID=$(curl -s http://169.254.169.254/latest/meta-data/instance-id)
aws ec2 describe-instances \
--instance-id $INSTANCE_ID \
--query 'Reservations[*].Instances[*].Tags[?Key==`aws:cloudformation:stack-name`].Value' \
--region $REGION \
--output text
@mgoodness
mgoodness / k8s-svc-annotations.md
Last active March 11, 2024 16:24
AWS ELB-related annotations for Kubernetes Services (as of v1.12.0)

AWS Service annotations

  • service.beta.kubernetes.io/aws-load-balancer-access-log-emit-interval (in minutes)
  • service.beta.kubernetes.io/aws-load-balancer-access-log-enabled (true|false)
  • service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-name
  • service.beta.kubernetes.io/aws-load-balancer-access-log-s3-bucket-prefix
  • service.beta.kubernetes.io/aws-load-balancer-additional-resource-tags (comma-separated list of key=value)
  • service.beta.kubernetes.io/aws-load-balancer-backend-protocol (http|https|ssl|tcp)
  • service.beta.kubernetes.io/aws-load-balancer-connection-draining-enabled (true|false)
@graste
graste / strace.md
Last active November 14, 2023 12:09
strace process for network and memory and other syscalls

File activity

strace -e trace=file -fp PID (file) or strace -e trace=desc -fp PID (file descriptors)

Common calls:

  • access
  • close – close file handle
  • fchmod – change file permissions
  • fchown – change file ownership
@jirutka
jirutka / pg_change_db_owner.sh
Last active February 6, 2024 20:01
Some convenient scripts to manage ownerships and privileges in PostgreSQL.
#!/bin/sh
#
# The MIT License
#
# Copyright 2014-2017 Jakub Jirutka <jakub@jirutka.cz>.
#
# 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 the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active May 9, 2024 06:43
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@ykxpb
ykxpb / contextlib.py
Created November 22, 2011 09:56
python contextlib source
"""Utilities for with-statement contexts. See PEP 343."""
import sys
from functools import wraps
__all__ = ["contextmanager", "nested", "closing"]
class GeneratorContextManager(object):
"""Helper for @contextmanager decorator."""
@tomoconnor
tomoconnor / dhquery.py
Created November 17, 2011 15:14
Working fork of dhquery.py
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fileencoding=utf-8
# vim:tabstop=2
from random import Random
from optparse import OptionParser
from pydhcplib.dhcp_packet import DhcpPacket
from pydhcplib.dhcp_network import DhcpClient
from pydhcplib.type_hw_addr import hwmac