justenwalker

Unsafe Node Assassinate

On Cassandra 1.1.x, nodetool removetoken on a dead node hangs. The only way to reliably remove the node from the cluster is to use an undocumented JMX command to force the remove of the node from gossip.

Upgrading to 1.2.x and above should obviate these steps in favor of nodetool removenode - See 1.2 Docs

It's probably also a good idea to run a nodetool repair after this operation - See wiki

Prerequisites

justenwalker

# -*- mode: ruby -*-
# vi: set ft=ruby :

$script = <<eos
#! /bin/bash

REQUIREMENTS="Django<1.7"

# Prerequisites
apt-get update

justenwalker

###*
 * @namespace PasswordChecker
 * 
 * Utility class to check a password's complexity
 * 
 * 
 * {@link PasswordChecker.strength} returns an object containing:
 * 
 * - *summary*  The results of {@link PasswordChecker.summary}
 * - *total*    The total raw score for the password

justenwalker

etcd dynamic inventory script

Generarates inventory for ansible from etcd using python-etcd library.

The script assumes etcd.ini to be present alongside it. To choose a different path, set the ETCD_INI_PATH environment variable:

export ETCD_INI_PATH=/path/to/etcd.ini

justenwalker

#! /bin/bash

if [ "running" = `boot2docker status` ]; then
  IP=`boot2docker ip 2>/dev/null`
  export DOCKER_CERT_PATH="$HOME/.boot2docker/certs/boot2docker-vm"
  export DOCKER_TLS_VERIFY=1
  export DOCKER_HOST="tcp://$IP:2376"
  /usr/local/bin/docker "$@"
else
  echo "boot2docker is not running"

justenwalker

Keybase proof

I hereby claim:

• I am justenwalker on github.
• I am justenwalker (https://keybase.io/justenwalker) on keybase.
• I have a public key whose fingerprint is DF04 3245 AE35 DBE3 0890 1D49 6AA4 DD62 7E5E 24EE

To claim this, I am signing this object:

justenwalker

#!powershell

$env:DAMON_CPU_LIMIT="2048" # MHz
$env:DAMON_MEMORY_LIMIT="2048" # MB

# Run my.exe inside a job object
& damon.exe my.exe

justenwalker

driver = "raw_exec"
config {
  command = "damon.exe" # Damon is the new task entry-point (it should be on the PATH)
  args    = ["my.exe","arg1","arg2"] # Your command + Args here
}

justenwalker

# Ask for a port on which Damon can serve Prometheus metrics
network {
  port "damon" {}
}

# Advertise damon as a service
service {
  port = "damon"
  name = "${NOMAD_TASK_NAME}-damon"
}

justenwalker

package win32

import "syscall"
import "unsafe"

var (
  kernel32DLL          = syscall.NewLazyDLL("kernel32.dll")
  procCreateJobObjectA = kernel32DLL.NewProc("CreateJobObjectA")
)