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Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

Purchase the cert

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On Tue Oct 27, 2015, history.state.gov began buckling under load, intermittently issuing 500 errors. Nginx's error log was sprinkled with the following errors:

2015/10/27 21:48:36 [crit] 2475#0: accept4() failed (24: Too many open files) 2015/10/27 21:48:36 [alert] 2475#0: *7163915 socket() failed (24: Too many open files) while connecting to upstream...

An article at http://www.cyberciti.biz/faq/linux-unix-nginx-too-many-open-files/ provided directions that mostly worked. Below are the steps we followed. The steps that diverged from the article's directions are marked with an *.

1. • Instead of using su to run ulimit on the nginx account, use ps aux | grep nginx to locate nginx's process IDs. Then query each process's file handle limits using cat /proc/pid/limits (where pid is the process id retrieved from ps). (Note: sudo may be necessary on your system for the cat command here, depending on your system.)
2. Added fs.file-max = 70000 to /etc/sysctl.conf
3. Added `nginx soft nofile 1

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const mongoose = require('mongoose')

mongoose.Promise = global.Promise

// Connect to MongoDB on localhost:27017
const conn = mongoose.createConnection('mongodb://localhost:27017/test')

conn.once('open', () => console.log('ready to use OPEN'))
conn.on('connected', () => console.log('ready to use'))
conn.on('error', err => console.log(err))

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#!/usr/bin/env bash

# Attach Data Disk AZURE specific

# https://docs.microsoft.com/en-us/azure/virtual-machines/linux/attach-disk-portal

# Grep for SCSI devices in the logs, such as in the following command and get the id of the last disk added. e,g, sdc
sudo grep SCSI /var/log/syslog

# create your device