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@bmhatfield
bmhatfield / check-recent-oom
Created April 16, 2016 15:10
A simple, time-based OOM check script for use with riemann-sumd
#!/bin/bash
# Run on a minutely basis by https://github.com/bmhatfield/riemann-sumd/
LAST_OOM_WINDOW=5;
LAST_OOM="$(grep 'Out of memory' /var/log/kern.log | tail -n 1)";
LAST_OOM_TIME=${LAST_OOM:0:15};
if [ -n "${LAST_OOM_TIME}" ]; then
if [ $(($((`date +%s` - `date --date="${LAST_OOM_TIME}" +%s`)) / 60 )) -le ${LAST_OOM_WINDOW} ]; then
echo "CRITICAL: OOM within last ${LAST_OOM_WINDOW} minutes!"
echo ${LAST_OOM}
@bmhatfield
bmhatfield / .profile
Last active August 9, 2025 20:28
Automatic Git commit signing with GPG on OSX
# In order for gpg to find gpg-agent, gpg-agent must be running, and there must be an env
# variable pointing GPG to the gpg-agent socket. This little script, which must be sourced
# in your shell's init script (ie, .bash_profile, .zshrc, whatever), will either start
# gpg-agent or set up the GPG_AGENT_INFO variable if it's already running.
# Add the following to your shell init to set up gpg-agent automatically for every shell
if [ -f ~/.gnupg/.gpg-agent-info ] && [ -n "$(pgrep gpg-agent)" ]; then
source ~/.gnupg/.gpg-agent-info
export GPG_AGENT_INFO
else
@moshest
moshest / appspec.yml
Last active October 13, 2021 18:09
Node.js Project on AWS CodeDeploy CentOS
version: 0.0
os: linux
files:
- source: /
destination: /home/ec2-user/node
permissions:
- object: /home/ec2-user
owner: ec2-user
group: ec2-user
type:
FROM codeship/ruby
MAINTAINER Dave Mox <dave.e.mox@gmail.com>
RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
git \
vim
COPY Makefile /src/

This is unmaintained, please visit Ben-PH/spacemacs-cheatsheet

Useful Spacemacs commands

  • SPC q q - quit
  • SPC w / - split window vertically
  • SPC w - - split window horizontally
  • SPC 1 - switch to window 1
  • SPC 2 - switch to window 2
  • SPC w c - delete current window
@pmp
pmp / envelope_encryption_kms_boto_pycrypto.md
Last active November 17, 2021 16:35
Envelope Encryption using AWS KMS, Python Boto, and PyCrypto.

If you use Amazon AWS for nearly anything, then you are probably familiar with KMS, the Amazon Key Management Service.

KMS is a service which allows API-level access to cryptographic primitives without the expense and complexity of a full-fledged HSM or CloudHSM implementation. There are trade-offs in that the key material does reside on servers rather than tamper-proof devices, but these risks should be acceptable to a wide range of customers based on the care Amazon has put into the product. You should perform your own diligence on whether KMS is appropriate for your environment. If the security profile is not adequate, you should consider a stronger product such as CloudHSM or managing your own HSM solutions.

The goal here is to provide some introductory code on how to perform envelope encrypt a message using the AWS KMS API.

KMS allows you to encrypt messages of up to 4kb in size directly using the encrypt()/decrypt() API. To exceed these limitations, you must use a technique called "envelope encryptio

@julz
julz / main.go
Created November 20, 2015 12:39
containersched minicontainer
package main
import (
"fmt"
"os"
"os/exec"
"syscall"
)
func main() {
@davoclavo
davoclavo / spacemacs-cheatsheet.md
Last active October 26, 2024 19:46 — forked from 526avijitgupta/spacemacs-cheatsheet.md
Spacemacs cheatsheet

emacs --daemon to run in the background. emacsclient.emacs24 <filename/dirname> to open in terminal

NOTE: "M-m and SPC can be used interchangeably".

  • Undo - C-/
  • Redo - C-?
  • Change case: 1. Camel Case : M-c 2. Upper Case : M-u
  1. Lower Case : M-l
@warmfusion
warmfusion / README.md
Created October 5, 2015 14:17
failshell.io/sensu/2013/05/08/high-availability-sensu

High availability monitoring with Sensu

sensu | May 8, 2013

Redundancy. Availability. Scalability. Should sound familiar to you if you work in the web. Every system I build has to fit those 3 main criterias. I would also throw in manageability. If I can’t use Chef with it, I’m probably trying to use the wrong tool for the job.

There’s always been one exception though: my monitoring tool. Nagios. Zabbix. Zenoss. Shinken. Used them all. Each of them have shortcomings when it comes to the four criterias listed above. Different ones for each.

So, that said, a few months back, I was searching for something fresh. Something I could easily manage with Chef. Because I tend to forget things, and I wanted to automate as much as possible our monitoring solution. Don’t get me wrong, there’s nothing as good as developers to monitor your stuff, but I tend to like to know there’s something wrong before they show up at my desk. Even if it’s only 1-2 minutes ;)

@chinshr
chinshr / Jenkinsfile
Last active May 20, 2025 13:10
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 {
}