Alby Hernández achetronic

💭

From bad practises always to the best ones

Site Reliability Engineer and Developer. Content creator at Youtube.

achetronic / get-docker-image-tag-by-sha.sh

Created July 2, 2022 19:19

Find the tag of a Docker image having only the SHA256

	#!/bin/bash

	SHA256_HASH="5bb4faffc8b35e2702b2ffa78e982b979d7b66db29bd55b0c58de8fa745df661"

	for i in {1..1000}
	do
	echo "Looking into page: $i"

	curl "https://registry.hub.docker.com/v2/repositories/apache/superset/tags/?page=$i" \
	\| jq '.results[] \| select(.["images"][]["digest"] == "sha256:'${SHA256_HASH}'")'

achetronic / add-ssh-key-to-all-ec2-machines.sh

Created July 2, 2022 19:23

Add an SSH key to all EC2 machines on AWS

	#!/usr/bin/env bash

	AWS_ENVIRONMENT="production"
	SSH_PUBLIC_KEY="ssh-ed25519 XXXYYYZZZexampleXXXYYYZZZ/XYZXYZ [email protected]"

	# Copy the key to a temporary location
	touch /tmp/id_ed25519.pub
	echo "${SSH_PUBLIC_KEY}" > /tmp/id_ed25519.pub

	# See all machines in all regions

achetronic / update-s3-objects-acls-huge-buckets.sh

Created October 14, 2022 13:23

Update ACLs, object by object, for buckets with millions of objects inside

	#!/usr/bin/env bash



	## VARIABLES
	BUCKET_NAME="YOUR-BUCKET-TO-PROCESS"
	BUCKET_PREFIX="THE-PREFIX-TO-START-PROCESSING/"

	NEXT_FILE_TO_PROCESS=""
	BASE_LIST_COMMAND="aws s3api list-objects-v2 --bucket ${BUCKET_NAME} --prefix ${BUCKET_PREFIX} --output text --query 'Contents[].Key' --max-items 100 --page-size 100"

achetronic / get-gcloud-gke-contexts.sh

Last active October 17, 2024 23:35

Get all the GKE contexts available for you authenticted account

	#!/bin/bash

	LOCAL_EXIT_CODE=0

	# Get a list of projects from Gcloud
	PROJECTS=($(gcloud projects list --format="value(projectId)"))

	# Create a directory to split clusters kubeconfig files later
	mkdir -p "${HOME}/.kube/clusters"

achetronic / adopt-helm-resources.sh

Last active July 31, 2024 14:03

Put Helm annotations and labels on already deployed Kubernetes resources to adopt them inside a Helm Release automatically

	#!/bin/bash

	LOCAL_EXIT_CODE=0

	RELEASE_NAME="istiod"
	RELEASE_NAMESPACE="istio-system"
	HELM_CHART_PATH="./istio/istiod"
	HELM_EXTRA_VALUES_PATH="./istio/common/istio.yaml"

achetronic / prepare-commit-msg

Created August 1, 2024 22:12

Co-Authored-By in your commits, but easier. Put it in '$HOME/.git/hooks/prepare-commit-msg'. Thank me later

	#!/bin/bash

	function prompt_for_multiselect {

	# little helpers for terminal print control and key input
	GREEN='\033[00;32m'
	YELLOW='\033[00;33m'
	RESTORE='\033[0m'
	ESC=$( printf "\033")
	cursor_blink_on() { printf "$ESC[?25h"; }