Available in stable development 1.14 1.13 1.12 1.11 1.10

Riak Store module

Table of Contents

1 Introduction

The riak module implements a Store that can be used as a backend for SimpleSAMLphp session data like the phpsession, sql, or memcache backends.

2 Preparations

The obvious first step for using Riak as a backend is to install and configure a Riak cluster for SimpleSAMLphp to use. Please refer to the Riak documentation for this.

This module requires the use of a Riak backend that supports secondary indexes. Refer to the Riak documentation on how to enable an appropriate backend for use by this module. Currently the only storage backend that supports secondary indexes is leveldb.

Next, you will need to install the Riak PHP Client library, available from https://github.com/basho/riak-php-client.

Finally, you need to config SimpleSAMLphp to for the riak Store by enabling the following modules:

  1. cron
  2. riak

The cron module allows you to do tasks regularly by setting up a cronjob that calls hooks in SimpleSAMLphp. This is required by the riak module to remove expired entries in the store.

Enabling the riak module allows it to be loaded and used as a storage backend.

You also need to copy the config-templates files from the cron module above into the global config/ directory.

$ cd /var/simplesamlphp
$ touch modules/cron/enable
$ cp modules/cron/config-templates/*.php config/
$ touch modules/riak/enable
$ cp modules/riak/config-templates/*.php config/

3 Configuring the cron module

At /var/simplesamlphp/config

$ vi module_cron.php


$config = array (
    'key' => 'secret',
    'allowed_tags' => array('daily', 'hourly', 'frequent'),
    'debug_message' => TRUE,
    'sendemail' => TRUE,

Then: With your browser go to => https://simplesamlphp_machine/simplesaml/module.php/cron/croninfo.php

And copy the cron's sugestion:

Cron is a way to run things regularly on unix systems.

Here is a suggestion for a crontab file:

# Run cron [daily]
02 0 * * * curl --silent "https://simplesamlphp_machine/simplesaml/module.php/cron/cron.php?key=secret&tag=daily" > /dev/null 2>&1
# Run cron [hourly]
01 * * * * curl --silent "https://simplesamlphp_machine/simplesaml/module.php/cron/cron.php?key=secret&tag=hourly" > /dev/null 2>&1
# Run cron [frequent]
XXXXXXXXXX curl --silent "https://simplesamlphp_machine/simplesaml/module.php/cron/cron.php?key=secret&tag=frequent" > /dev/null 2>&1
    Click here to run the cron jobs:

Run cron [daily]
Run cron [hourly]
Run cron [frequent]

Add to CRON with

# crontab -e

4 Configuring the riak module

The riak module uses the following configuration options specified in config/module_riak.php. The defaults are listed:

$config = array(
    'path' => 'riak-php-client/riak.php',
    'host' => 'localhost',
    'port' => 8098,
    'bucket' => 'SimpleSAMLphp',

Finally, the module can be specified as the Store in config/config.php with the following setting:

    'store.type' => 'riak:Store',