Yevhen yevhenkizin

Install RabbitMQ on Ubuntu 16.04

Install Erlang

wget https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb
sudo apt-get update -y
sudo apt-get install -y erlang erlang-nox

Adjusting child processes for PHP-FPM (Nginx)

When setting these options consider the following:

How long is your average request?
What is the maximum number of simultaneous visitors the site(s) get?
How much memory on average does each child process consume?

Determine if the max_children limit has been reached.

sudo grep max_children /var/log/php?.?-fpm.log.1 /var/log/php?.?-fpm.log

Installing Prometheus on Ubuntu 16.04

This gist is a compilation of two tutorials. You can find the original tutorials here and here. What should you know before using this? Everything can be executed from the home folder. For easier cleanup at the end you can make directory where you'll download everything, and then just use rm -rf .. Although, you should be careful. If some strange bugs arise unexpectedly somewhere sometimes, just keep in mind that some user names have underscores in them (this is probably nothing to worry about).

Create Users

sudo adduser --no-create-home --disabled-login --shell /bin/false --gecos "Prometheus Monitoring User" prometheus
sudo adduser --no-create-home --disabled-login --shell /bin/false --gecos "Node Exporter User" node_exporter
sudo adduser --no-create-home --disabled-login --shell /bin/false --gecos "Alertm

Introduction

So HAProxy is primalery a load balancer an proxy for TCP and HTTP. But it may act as a traffic regulator. It may also be used as a protection against DDoS and service abuse, by maintening a wide variety of statistics (IP, URL, cookie) and when abuse is happening, action as denying, redirecting to other backend may undertaken ([haproxy ddos config], [haproxy ddos])

How to grow a partition in Linux

This guide will walk you through the steps required to grow a partition in Linux. You will have to reboot through this guide.

If possible, make a snapshot.

Often, you will want to grow the partition table because you made your virtual hard disk too small, and you tried to extend it in your hypervisor, only to find out that your partition is still the same size as it was before.

	#!/bin/bash
	# In honor of the remarkable Windson
	#/bin/bash
	namespace=$1

	if [[ -z "$namespace" ]]; then
	echo "Use "$(basename "$0")" NAMESPACE";
	exit 1;
	fi

	#!/bin/bash
	# Get postman app
	wget https://dl.pstmn.io/download/latest/linux64 -O postman.tar.gz
	sudo tar -xzf postman.tar.gz -C /opt
	sudo ln -s /opt/Postman/Postman /usr/bin/postman

	#Create a Desktop Entry
	cat > ~/.local/share/applications/postman.desktop <<EOL
	[Desktop Entry]
	Encoding=UTF-8

	apiVersion: v1
	kind: ConfigMap
	metadata:
	name: nginx-conf
	data:
	nginx.conf: \|
	user nginx;
	worker_processes 3;
	error_log /var/log/nginx/error.log;
	events {

	user www-data;
	worker_processes auto;
	worker_cpu_affinity auto;
	worker_rlimit_nofile 10000;
	worker_shutdown_timeout 30;
	pid /run/nginx.pid;

	events {
	worker_connections 1024;
	# Для Linux 2.6+ - epool, Для FreeBSD - kqueue