vvuksan’s gists

vvuksan / gist:1124364

Created August 4, 2011 02:19

Using Logstash to generate log metrics

	input { whatever }

	filter { grok { pattern => "%{COMBINEDAPACHELOG}" } } output { statsd { increment => "apache.status.%{response}" } }

vvuksan / README

Created August 16, 2011 22:01

LXC (Linux Containers Installation)

	This works under Ubuntu 10.10. I tried under 10.04 LTS but the Ubuntu templates are not there. Investigating.

	[ Leaving this link here for reference in case I need to do apt-get upgrade. @ohloh recommends it
	http://sourceforge.net/mailarchive/message.php?msg_id=26885493 ]

	To make things easy have libvirt installed ie.

	sudo apt-get install libvirt-bin

	Otherwise you will need to set up bridges, iptables, dnsmasq.

vvuksan / parser.py

Created November 18, 2011 22:37

Ganglia XDR packet parser

	from socket import *
	from xdrlib import Packer, Unpacker

	# Set the socket parameters
	host = "localhost"
	port = 1234
	buf = 1024
	addr = (host,port)

	slope_str2int = {'zero':0,

vvuksan / gist:1390034

Created November 23, 2011 21:55

Intel SSD drives perf

	Two INTEL SSDSA2CW300G3 in RAID 0 array

	> tiotest -t 8 -f 2048 -r 500 -b 4096 -d /mnt/test
	Tiotest results for 8 concurrent io threads:
	,----------------------------------------------------------------------.
	\| Item \| Time \| Rate \| Usr CPU \| Sys CPU \|
	+-----------------------+----------+--------------+----------+---------+
	\| Write 16384 MBs \| 39.3 s \| 416.452 MB/s \| 298.5 % \| 229.5 % \|
	\| Random Write 16 MBs \| 0.3 s \| 53.267 MB/s \| 35.4 % \| 134.0 % \|
	\| Read 16384 MBs \| 3.1 s \| 5348.594 MB/s \| 4770.1 % \| 1515.4 % \|

vvuksan / gist:1941115

Created February 29, 2012 14:08

Ganglia alert on trend

	<?php

	$rrd_file = "/var/lib/ganglia/rrds/Test Cluster/localhost.localdomain/load_one.rrd";


	$command = "/usr/bin/rrdtool xport --start '-600s' --end '-30s' ";
	$command .= " --daemon unix:/tmp/rrdcached.limited.sock ";
	$command .= "DEF:'sum'='" . $rrd_file . ":sum':AVERAGE XPORT:sum:metric_value VDEF:D2=sum,LSLSLOPE ";
	$command .= "VDEF:H2=sum,LSLINT CDEF:avg2=sum,POP,D2,COUNT,*,H2,+ XPORT:avg2:trend";

vvuksan / gist:3100171

Created July 12, 2012 19:03

JMX collection using command line JMX client

	#!/bin/bash

	if [ $# -ne 3 ]; then
	echo "You need to supply both JMX host and port and metric. Exiting ..."
	exit 1
	fi

	JAVA_BIN="/usr/bin/java"
	JMX_CMDLINE="/opt/ganglia/cmdline-jmxclient-0.10.3.jar"
	GMETRIC_BIN="/usr/bin/gmetric -d 180"

vvuksan / gist:4425024

Last active December 10, 2015 10:59

time.apple.com NYE 2013 issues

vvuksan / gist:6002154

Created July 15, 2013 18:18

Code Anywhere random errors

	$ curl -v http://www.codeanywhere.net
	* About to connect() to www.codeanywhere.net port 80 (#0)
	* Trying 168.61.33.86...
	* Connected to www.codeanywhere.net (168.61.33.86) port 80 (#0)
	> GET / HTTP/1.1
	> User-Agent: curl/7.29.0
	> Host: www.codeanywhere.net
	> Accept: /
	>
	< HTTP/1.1 200 OK

vvuksan / install_phantomjs.rb

Last active August 29, 2015 14:10

	#!/usr/bin/env ruby
	# coding: UTF-8

	# install_phantomjs.rb
	#
	# download, build, and install PhantomJS for Raspberry Pi
	#
	# * tested: PhantomJS 1.9.7 / Raspbian (Wheezy)
	#
	# created on : 2014.02.13

vvuksan / gist:7f60f5552c2b96f39b16

Created December 27, 2014 16:21

Packet loss to Digital Ocean JFK

	$ mtr -c 20 -r -w -z x.x.x.x
	Start: Sat Dec 27 11:19:47 2014
	HOST: xxxxxx Loss% Snt Last Avg Best Wrst StDev
	<snip>
	3. AS11426 gig10-0-0-424.rlghnca-rtr2.nc.rr.com 0.0% 20 19.2 25.6 10.6 73.2 13.1
	4. AS11426 cpe-024-025-062-150.ec.res.rr.com 0.0% 20 14.2 14.3 10.8 36.4 5.3
	5. AS11426 be31.chrcnctr01r.southeast.rr.com 0.0% 20 16.7 20.6 16.7 23.5 1.8
	6. AS7843 bu-ether34.atlngamq46w-bcr00.tbone.rr.com 0.0% 20 28.5 24.7 20.6 33.9 3.6
	7. AS7843 bu-ether21.atlngamq47w-bcr01.tbone.rr.com 0.0% 20 27.6 25.7 22.2 32.8 3.0
	8. AS7843 107.14.17.190 0.0% 20 25.0 24.0 20.1 61.9 9.0

Vladimir Vuksan vvuksan