Predis with laravel 5.5 “No connections available in the pool in Aggregate/RedisCluster.php:337 ”

Question

I\'ve setup redis-cluster on Amazon ElastiCache for cache, using Laravel 5.5 and Predis package, I get the following error.

Predis\\ClientException: No conne         


        

Answer 1

I think the problem is that I'm trying to switch amz cloud service by service... ANd redis can only be accessed through the vpc which I'm not in this case.

I need to test is from an ec2 inside the vpc for testing.

Answer 2

This is working in in our env:

    'redis' => [
         'cluster' => true,

         'client' => 'predis',

         'options' => [
             'cluster' => 'redis',
             'parameters' => [
                 'scheme'   => env('REDIS_SCHEME', 'tcp'),
                 'host'     => env('REDIS_HOST', 'localhost'),
                 'password' => env('REDIS_PASSWORD', null),
                 'port'     => env('REDIS_PORT', 6379),
                 'database' => 0,
                 'timeout' => 15,
              ],
         ],

         'clusters' => [

             'default' => [
                 'scheme'   => env('REDIS_SCHEME', 'tcp'),
                 'host'     => env('REDIS_HOST', 'localhost'),
                 'password' => env('REDIS_PASSWORD', null),
                 'port'     => env('REDIS_PORT', 6379),
                 'database' => 0,
                 'timeout' => 15,
             ],
         ],
     ],

Based on info found here: https://github.com/nrk/predis/issues/480 - but needed to also replicate all 'default' config values in the options -> parameters group

REDIS_HOST, is pointing to the configuration endpoint in AWS elasticache's redis cluster.