redis-php_session.md

Installing the Redis Server

sudo apt-add-repository ppa:chris-lea/redis-server
sudo apt-get update
sudo apt-get install redis-server

Installing the Redis Client and PHP Extension

sudo apt-get update
sudo apt-get install redis-tools php-redis

Configure Redis to Accept External Connections

sudo nano /etc/redis/redis.conf
      bind localhost 172.18.111.10
sudo service redis-server restart

Set a Password for the Redis Server

sudo nano /etc/redis/redis.conf
      requirepass 1qa2ws3ed4rf
sudo service redis-server restart

Test Redis Connection and Authentication

redis-cli -h 172.18.111.10
Output
172.18.111.10:6379>
172.18.111.10:6379> AUTH 1qa2ws3ed4rf
172.18.111.10:6379> keys *

Install the Redis Extension on the Web Server

sudo apt-get update
sudo apt-get install php5-redis

Set Redis as the Default Session Handler on the Web Server

# On LAMP environments:
sudo vim /etc/php5/apache2/php.ini

#On LEMP environments:
sudo vim /etc/php5/fpm/php.ini

session.save_handler = redis
session.save_path = "tcp://172.18.111.10:6379?auth=1qa2ws3ed4rf"

#On LAMP environments:
sudo service apache2 restart

#On LEMP environments:
sudo service php5-fpm restart 

Test Redis Session Handling #Code Testing

<?php
 session_start();
 $count = isset($_SESSION['count']) ? $_SESSION['count'] : 1;
 echo $count;
 $_SESSION['count'] = ++$count;
>

Check session in redis server

$ redis-cli -h 172.18.111.10
172.18.111.10:6379>
172.18.111.10:6379> AUTH 1qa2ws3ed4rf
172.18.111.10:6379> keys *