nkwhr’s gists

nkwhr / update_hosts.sh

Created May 16, 2014 09:52

A handler script for updating /etc/hosts with Serf.

	#!/bin/sh

	set -e

	export PATH=/usr/local/bin:/usr/bin:/bin

	read name address role tags

	file=/etc/hosts
	tmp_file=/tmp/hosts.tmp

nkwhr / model.rb

Created May 29, 2014 01:20

joinした結果を全て取得するやつ

	class Model < ActiveRecord::Base
	scope :retrieve_all, ->(*tables) {
	select_stmt = [%{`#{self.table_name}`.*}]

	select_stmt << tables.map {\|t\|
	ar = ActiveRecord::Base.const_get(t.to_s.classify.singularize)
	table_name = ar.table_name
	table_name_single = table_name.singularize

	ar.attribute_names.map {\|col\|

nkwhr / mail.pl

Created June 3, 2014 03:22

Perlでメールを送るときのテンプレート

	#!/usr/bin/env perl

	use strict;
	use warnings;
	use utf8;
	use Email::Sender::Simple qw/sendmail/;
	use Email::MIME;
	use Encode;

	my $email = Email::MIME->create(

nkwhr / swap_stats.sh

Last active August 29, 2015 14:02

A shellscript to check who's hogging swap.

	#!/bin/sh

	## e.g.) sudo ./swap_stats.sh \| column -t \| sort -nrk3 \| head -n25"

	if [ $UID -ne 0 ] ; then
	echo "You must be root to run this script." 1>&2
	exit 1
	fi

	TOTAL_SWAP=0

nkwhr / bench.txt

Last active August 29, 2015 14:07

Atlantic.Net Cloud Server GO Plan (CPU:1/MEM:256MB/SSD:10GB) see also: https://speakerdeck.com/mackee/kuraudohuo-yong-shu

	# # # # # # # ##### ###### # # #### # #
	# # ## # # # # # # # ## # # # # #
	# # # # # # ## ##### ##### # # # # ######
	# # # # # # ## # # # # # # # # #
	# # # ## # # # # # # # ## # # # #
	#### # # # # # ##### ###### # # #### # #

	Version 5.1.3 Based on the Byte Magazine Unix Benchmark

	Multi-CPU version Version 5 revisions by Ian Smith,

nkwhr / user_last_access.pl

Created October 10, 2014 07:30

	#!/usr/bin/env perl

	use sane;
	use Redis::Fast;
	use Time::Piece;
	use DDP;

	my $user_id = 100;

	my $u = UserLastAccess->new(user_id => $id);

nkwhr / install_kernel.sh

Created October 29, 2014 09:12

Build and installs vanilla kernel on CentOS 6. You can specify a version with `$VERSION` environment variable.

	#!/bin/bash

	set -e

	export PATH=/sbin:/bin:/usr/sbin:/usr/bin
	export LANG=C

	if [ $UID -ne 0 ] ; then
	echo "You must be root to run this script."
	exit 1

nkwhr / restart_rabbitmq.sh

Created December 11, 2014 09:51

	#!/bin/bash

	PATH=/usr/bin:/bin:/usr/sbin:/sbin
	export PATH

	function pushover() {
	curl -s -X POST \
	--form-string "token=$PUSHOVER_TOKEN" \
	--form-string "user=$PUSHOVER_USER" \
	--form-string "title=RabbitMQ Restart Attempted" \

nkwhr / manual_gc.txt

Created December 11, 2014 09:54

Manual GC command for RabbitMQ Server

rabbitmqctl eval '[garbage_collect(P) || P <- processes()].'

nkwhr / docker_registry_howto.md

Last active August 29, 2015 14:13

How to setup and run private docker registry with Nginx and fig on CentOS6

Download registry container

$ docker pull registry

$ sudo yum install python-pip