thbar

derwiki

Adding an audit log to your Rails app

If you have any sort of administrative interface on your web site, you can easily imagine an intruder gaining access and mucking about. How do you know the extent of the damage? Adding an audit log to your app is one quick solution. An audit log should record a few things:

• controller entry points with parameter values
• permanent information about the user, like user_id
• transient information about the user, like IP and user_agent

Using the Rails framework, this is as simple as adding a before_action to your admin controllers. Here’s a basic version that I’m using in production.

TiagoGouvea

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 */
'use strict';

var React = require('react-native');
var {
  AppRegistry,
  StyleSheet,

seyhunak

/etc/supervisor/conf.d/sidekiq.conf

[program:sidekiq]
command=/usr/local/bin/sidekiq.sh
directory=/usr/local/bin/
user=ubuntu
startsecs=10
autostart=true
autorestart=true
stdout_logfile=/var/log/supervisor/sidekiq.log

rodleviton

sudo -i
cd
apt-get install build-essential checkinstall && apt-get build-dep imagemagick -y
wget http://www.imagemagick.org/download/ImageMagick-6.8.7-7.tar.gz
tar xzvf ImageMagick-6.8.9-1.tar.gz
cd ImageMagick-6.8.9-1/
./configure --prefix=/opt/imagemagick-6.8 && make
checkinstall

sheikhwaqas

# Download and Install the Latest Updates for the OS
apt-get update && apt-get upgrade -y

# Set the Server Timezone to CST
echo "America/Chicago" > /etc/timezone
dpkg-reconfigure -f noninteractive tzdata

# Enable Ubuntu Firewall and allow SSH & MySQL Ports
ufw enable
ufw allow 22

denji

Moved to git repository: https://github.com/denji/nginx-tuning

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

adamstac

Install and configure Sendmail on Ubuntu

This should help you get Sendmail installed with basic configuration on Ubuntu.

1. If sendmail isn't installed, install it: sudo apt-get install sendmail
2. Configure /etc/hosts file: nano /etc/hosts
3. Make sure the line looks like this: 127.0.0.1 localhost yourhostname
4. Run Sendmail's config and answer 'Y' to everything: sudo sendmailconfig
5. Restart apache sudo service apache2 restart

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

deepakdargade

<%= f.select :country_id, options_for_select(@countries.map{ |c| [c.name, c.id, {'data-currency_code'=>c.currency_code}] }) %>