kieetnvt

If Statement and common condition

Syntax:	if (condition) { ... }
Default:	—
Context:	server, location

A condition may be any of the following:

kekru

Nginx TLS SNI routing, based on subdomain pattern

Nginx can be configured to route to a backend, based on the server's domain name, which is included in the SSL/TLS handshake (Server Name Indication, SNI).
This works for http upstream servers, but also for other protocols, that can be secured with TLS.

prerequisites

• at least nginx 1.15.9 to use variables in ssl_certificate and ssl_certificate_key.
• check nginx -V for the following:

  ...
  TLS SNI support enabled

shaneutt

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.

In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit

guyarad

function getReadableFileSizeString(fileSizeInBytes, decimalPlacer=1) {
    // for more concise solutions see: https://stackoverflow.com/questions/10420352/converting-file-size-in-bytes-to-human-readable-string
    var i = 0;
    var scale = 1024;
    var byteUnits = [' B', ' KiB', ' MiB', ' GiB', ' TiB', 'PiB', 'EiB', 'ZiB', 'YiB'];
	while (fileSizeInBytes >= scale) {
        fileSizeInBytes = fileSizeInBytes / scale;
        i++;
    } 

pydevops

Reference

• https://www.linuxtrainingacademy.com/systemd-cheat-sheet/
• https://www.linux.com/training-tutorials/understanding-and-using-systemd/
• https://www.digitalocean.com/community/tutorials/how-to-use-systemctl-to-manage-systemd-services-and-units
• https://www.digitalocean.com/community/tutorials/systemd-essentials-working-with-services-units-and-the-journal
• https://www.youtube.com/watch?v=ZUX9Fx8Rwzg&index=9&list=PLCq0ZVVxGP0Y-xlum2pnhqwsrIf61J6Ka
• https://www.youtube.com/watch?v=AtEqbYTLHfs

show service unit file

rahulsoibam

Golang Workers / Job Queue

A running example of the code from:

• http://marcio.io/2015/07/handling-1-million-requests-per-minute-with-golang
• http://nesv.github.io/golang/2014/02/25/worker-queues-in-go.html

This gist creates a working example from blog post, and a alternate example using simple worker pool.

TLDR: if you want simple and controlled concurrency use a worker pool.

fernandoaleman

Install RabbitMQ on CentOS 7

sudo yum -y install epel-release
sudo yum -y update

Install Erlang

Download repository

petemoore

package main

import (
	"context"
	"errors"
	"fmt"
	"log"
	"os"
	"os/exec"
	"syscall"

diegopacheco

sudo apt-get install autoconf automake libtool curl make g++ unzip -y
git clone https://github.com/google/protobuf.git
cd protobuf
git submodule update --init --recursive
./autogen.sh
make
make check
sudo make install
sudo ldconfig

olivoil

# Make sure you grab the latest version
curl -OL https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip

# Unzip
unzip protoc-3.5.1-linux-x86_64.zip -d protoc3

# Move protoc to /usr/local/bin/
sudo mv protoc3/bin/* /usr/local/bin/

# Move protoc3/include to /usr/local/include/