Elasticache PHP Redis AWS Moved Exception in Laravel

Question

I am using laravel 5.2 and having an architecture of multi-server autoscaling. I want to have session and cache in a centralized location. I want to use AWS elasticache for the same.

I have setup an elasticache Redis cluster having following options :

Parameter group : default.redis.3.2.cluster.on Shards : 3 Total Nodes : 9

In laravel session configuration I have set redis as the session driver.

In database.php where redis configuration is set, i have used following :

REDIS_HOST=my_aws_elasticache_configuration_endpoint REDIS_PASSWORD=null REDIS_PORT=6379 .

When I try to use it, I get following error :

MOVED 13841 some_ip_address_of_aws:6379

I tried using local redis and it worked, so predis is working properly. I tried to check the solutions online, but not able to get the solution. I believe that the configuration endpoint is trying to redirect the redis connection to an available node url out of the 9 nodes I have. However, I have anticipated that AWS should do it internally and not throw exception. Can anyone help me?

CenterOrbit · Accepted Answer · 2018-03-14 21:41:54Z

2

I finally got an answer, we need to get the cluster mode on in database settings and set new cluster option to redis. This is how the redis config in database.php looks like :

'redis' => [
    'client' => 'predis',
    'options' => [
        'cluster' => 'redis',
    ],
    'clusters' => [
        'default' => [
            [
                'host' => env('REDIS_HOST', 'localhost'),
                'password' => env('REDIS_PASSWORD', null),
                'port' => env('REDIS_PORT', 6379),
                'database' => 0,
            ],
        ],
    ],
],

If you have password then you can replace options array with this :

 'options' => [
        'cluster' => 'redis',
        'parameters' => ['password' => env('REDIS_PASSWORD', null)],
    ],

edited Mar 14, 2018 at 21:41

CenterOrbit

6,9411 gold badge33 silver badges37 bronze badges

answered Sep 22, 2017 at 7:38

Mihir Bhende

9,0952 gold badges33 silver badges39 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

CenterOrbit Over a year ago

A word to the wise: If you enable TLS (encryption in transit) for Redis, you'll also need to have 'scheme' => env('REDIS_SCHEME', 'tcp') in the parameters array. Set this to 'tls' in your .env. If you're using AWS Elasticache, you'll also need 'ssl' => ['verify_peer' => false] in the options array as well.

Collectives™ on Stack Overflow

Elasticache PHP Redis AWS Moved Exception in Laravel

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related