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@tuannvm
tuannvm / 0.12.tf
Last active December 3, 2022 18:50
#terraform #hashicorp #cheatsheet #0.12
#### first class expresssion
variable "ami" {}
resource "aws_instance" "example" {
ami = var.ami
}
#### list & map
resource "aws_instance" "example" {
vpc_security_group_ids = var.security_group_id != "" ? [var.security_group_id] : []
}
url - https://aws.amazon.com/blogs/security/a-safer-way-to-distribute-aws-credentials-to-ec2/
Finding hard-coded credentials in your code
Hopefully you’re excited about deploying credentials to EC2 that are automatically rotated. Now that you’re using Roles, a good security practice would be to go through your code and remove any references to AKID/Secret. We suggest running the following regular expressions against your code base:
Search for access key IDs: (?<![A-Z0-9])[A-Z0-9]{20}(?![A-Z0-9]). In English, this regular expression says: Find me 20-character, uppercase, alphanumeric strings that don’t have any uppercase, alphanumeric characters immediately before or after.
Search for secret access keys: (?<![A-Za-z0-9/+=])[A-Za-z0-9/+=]{40}(?![A-Za-z0-9/+=]). In English, this regular expression says: Find me 40-character, base-64 strings that don’t have any base 64 characters immediately before or after.
If grep is your preferred tool, run a recursive, Perl-compatible search using the following commands
@yossorion
yossorion / what-i-wish-id-known-about-equity-before-joining-a-unicorn.md
Last active August 9, 2024 20:18
What I Wish I'd Known About Equity Before Joining A Unicorn

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

@samrocketman
samrocketman / libimobiledevice_ifuse_Ubuntu.md
Last active July 3, 2024 07:05
On Ubuntu 16.04, since iOS 10 update, libimobiledevice can't connect to my iPhone. This is my attempt to document a fix.

Why this document?

I upgraded my iPhone 5s to iOS 10 and could no longer retrieve photos from it. This was unacceptable for me so I worked at achieving retrieving my photos. This document is my story (on Ubuntu 16.04).

The solution is to compile libimobiledevice and ifuse from source.

Audience

Who is this guide intended for?

@brandond
brandond / vpc-flowlog
Last active September 18, 2023 03:41
logstash-grok-pattern-vpc-flow-log
# VPC Flow Log fields
# version account-id interface-id srcaddr dstaddr srcport dstport protocol packets bytes start end action log-status
# http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/flow-logs.html#flow-log-records
VPCFLOWLOG %{NUMBER:version:int} %{NUMBER:account-id} %{NOTSPACE:interface-id} %{NOTSPACE:srcaddr} %{NOTSPACE:dstaddr} %{NOTSPACE:srcport:int} %{NOTSPACE:dstport:int} %{NOTSPACE:protocol:int} %{NOTSPACE:packets:int} %{NOTSPACE:bytes:int} %{NUMBER:start:int} %{NUMBER:end:int} %{NOTSPACE:action} %{NOTSPACE:log-status}
@Faheetah
Faheetah / Jenkinsfile.groovy
Last active September 19, 2024 03:12
Jenkinsfile idiosynchrasies with escaping and quotes
node {
echo 'Results included as an inline comment exactly how they are returned as of Jenkins 2.121, with $BUILD_NUMBER = 1'
echo 'No quotes, pipeline command in single quotes'
sh 'echo $BUILD_NUMBER' // 1
echo 'Double quotes are silently dropped'
sh 'echo "$BUILD_NUMBER"' // 1
echo 'Even escaped with a single backslash they are dropped'
sh 'echo \"$BUILD_NUMBER\"' // 1
echo 'Using two backslashes, the quotes are preserved'
sh 'echo \\"$BUILD_NUMBER\\"' // "1"
@justinledwards
justinledwards / camerasettings.sh
Created September 17, 2015 23:12
Camera settings on v4l2
#!/bin/bash
v4l2-ctl -c brightness=0
v4l2-ctl -c contrast=120
v4l2-ctl -c white_balance_temperature_auto=0
v4l2-ctl -c gamma=120
v4l2-ctl -c white_balance_temperature=4700
v4l2-ctl -c sharpness=100
v4l2-ctl -c backlight_compensation=0
v4l2-ctl -c focus_absolute=10
v4l2-ctl --list-ctrls-menus
@chinshr
chinshr / Jenkinsfile
Last active October 16, 2023 09:25
Best of Jenkinsfile, a collection of useful workflow scripts ready to be copied into your Jenkinsfile on a per use basis.
#!groovy
# Best of Jenkinsfile
# `Jenkinsfile` is a groovy script DSL for defining CI/CD workflows for Jenkins
node {
}
@RyanGWU82
RyanGWU82 / capture-boto3.py
Created July 15, 2015 18:54
Do you use boto3 or botocore? Want to capture and inspect your AWS API traffic? This script will send all AWS API traffic to a Runscope bucket for analysis and debugging.
# Do you use boto3 or botocore? Want to capture and inspect your AWS API
# traffic? This script will send all AWS API traffic to a Runscope bucket for
# analysis and debugging.
#
# Instructions:
# 1. Sign up for an account at https://www.runscope.com if you don't already
# have one.
# 2. Your account will have a single bucket. Get the Bucket Key from Runscope's
# Traffic Inspector tab; paste that into the RUNSCOPE_BUCKET_KEY constant.
# 3. Go to https://www.runscope.com/applications and create a new application.