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Jon Simons simonsj

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@damscott
damscott / ecs-service.tf
Created June 19, 2018 16:41
Using CI/CD for deployment of ECS task definitions and images causes drift between the tfstate and AWS. Using a bash script in a Terraform External Data Source to pull the current task definition revision and container image tag from AWS keeps the state in sync with changes from CI. This does not currently support multiple containers in a single…
resource "aws_ecs_service" "service" {
name = "${var.app}"
cluster = "${var.cluster}"
# Use task revision in AWS if it is greater than task revision in tfstate
# Prevents rolling back revision when it has been incremented by CI
task_definition = "${aws_ecs_task_definition.app.family}:${data.external.task_definition.result["task_definition_revision"] > aws_ecs_task_definition.app.revision ? data.external.task_definition.result["task_definition_revision"] : aws_ecs_task_definition.app.revision }"
desired_count = "${var.task_count}"
depends_on = [
"aws_ecs_task_definition.app"
@tqinli
tqinli / pthread_cond_repro.c
Last active February 24, 2023 22:52
A repro for pthread_cond_wait/signal's issue of losing signal
// To compile
// gcc -g -o pthread_cond_repro ./pthread_cond_repro.c -lpthread
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <assert.h>
@moyix
moyix / killbutmakeitlooklikeanaccident.sh
Created February 5, 2022 22:51
Script to inject an exit(0) syscall into a running process. NB: only x86_64 for now!
#!/bin/bash
gdb -p "$1" -batch -ex 'set {short}$rip = 0x050f' -ex 'set $rax=231' -ex 'set $rdi=0' -ex 'cont'