Leo.feng regardfs

Installing ELK (CentOS)

This is a short step-by-step guide on installing ElasticSearch LogStash and Kibana Stack on a CentOS environment to gather and analyze logs.

I. Install JDK

rpm -ivh https://dl.dropboxusercontent.com/u/5756075/jdk-7u45-linux-x64.rpm

Resize a Hard Disk for a Virtual Machine

Our Virtual Machines are provisioned using Vagrant from a Linux base box to run using VirutalBox. If the Hard Disk space runs out and you cannot remove files to free-up space, you can resize the Hard Disk using some VirtualBox and Linux commands.

Some assumptions

The following steps assume you've got a set-up like mine, where:

	# if you are in python3.X env, you should run
	sudo apt-get install python3-dev
	sudo apt-get install libevent-dev
	sudo apt-get install libncurses5-dev
	# if you are in python2.x env, then sudo apt-get install python-dev

	# install readline
	pip install readline

	# config $HOME/.bashrc

	#! /bin/sh
	### BEGIN INIT INFO
	# Provides: logstash
	# Required-Start: $remote_fs $syslog
	# Required-Stop: $remote_fs $syslog
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6
	# Short-Description: Start daemon at boot time
	# Description: Enable service provided by daemon.
	### END INIT INFO

	#!/usr/bin/env bash


	# create self-signed server certificate:

	read -p "Enter your domain [www.example.com]: " DOMAIN

	echo "Create server key..."

	openssl genrsa -out $DOMAIN.key 2048


	require 'faraday'
	require 'faraday_middleware'
	require 'json'

	# Debug:
	# require "pry"


	country_code_src = "USD"

	#!groovy
	@NonCPS
	def getACIChangeSets() {
	def aci = []
	currentBuild.rawBuild.getChangeSets().each { cs ->
	cs.getItems().each { item ->
	item.getAffectedFiles().each { f ->
	if (f.path.endsWith(".yml")) {
	aci << f.path
	}

	#!/usr/bin/env python
	"""
	Read item history from zabbix, and plot as histogram
	"""
	import matplotlib
	import numpy as np
	import matplotlib.mlab as mlab
	import matplotlib.pyplot as plt
	import requests
	import json