Pony.fm/config/elasticsearch.php

<?php

return [

    /**
     * You can specify one of several different connections when building an
     * Elasticsearch client.
     *
     * Here you may specify which of the connections below you wish to use
     * as your default connection when building an client. Of course you may
     * use create several clients at once, each with different configurations.
     */
    'defaultConnection' => 'default',

    /**
     * These are the connection parameters used when building a client.
     */
    'connections' => [

        'default' => [

            /**
             * Hosts.
             *
             * This is an array of hosts that the client will connect to. It can be a
             * single host name, or an array if you are running a cluster of Elasticsearch
             * instances.
             *
             * This is the only configuration value that is mandatory.
             *
             * If set in an environment variable, this should be a comma-separated
             * list of hostnames. Port numbers are optional; 9200 is the default.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_host_configuration
             */
            'hosts' => explode(',', env('ELASTICSEARCH_HOSTS', 'localhost:9200')),

            /**
             * SSL.
             *
             * If your Elasticsearch instance uses an out-dated or self-signed SSL
             * certificate, you will need to pass in the certificate bundle.  This can
             * either be the path to the certificate file (for self-signed certs), or a
             * package like https://github.com/Kdyby/CurlCaBundle.  See the documentation
             * below for all the details.
             *
             * If you are using SSL instances, and the certificates are up-to-date and
             * signed by a public certificate authority, then you can leave this null and
             * just use "https" in the host path(s) above and you should be fine.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_security.html#_ssl_encryption_2
             */
            'sslVerification' => null,

            /**
             * Logging.
             *
             * Logging is handled by passing in an instance of Monolog\Logger (which
             * coincidentally is what Laravel's default logger is).
             *
             * If logging is enabled, you either need to set the path and log level
             * (some defaults are given for you below), or you can use a custom logger by
             * setting 'logObject' to an instance of Psr\Log\LoggerInterface.  In fact,
             * if you just want to use the default Laravel logger, then set 'logObject'
             * to \Log::getMonolog().
             *
             * Note: 'logObject' takes precedent over 'logPath'/'logLevel', so set
             * 'logObject' null if you just want file-based logging to a custom path.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#enabling_logger
             */
            'logging' => false,

            // If you have an existing instance of Monolog you can use it here.
            //'logObject' => \Log::getMonolog(),

            'logPath' => storage_path('logs/elasticsearch.log'),

            'logLevel' => Monolog\Logger::INFO,

            /**
             * Retries.
             *
             * By default, the client will retry n times, where n = number of nodes in
             * your cluster. If you would like to disable retries, or change the number,
             * you can do so here.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_set_retries
             */
            'retries' => null,

            /**
             * The remainder of the configuration options can almost always be left
             * as-is unless you have specific reasons to change them.  Refer to the
             * appropriate sections in the Elasticsearch documentation for what each option
             * does and what values it expects.
             */

            /**
             * Sniff On Start.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html
             */
            'sniffOnStart' => false,

            /**
             * HTTP Handler.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_configure_the_http_handler
             * @see http://ringphp.readthedocs.org/en/latest/client_handlers.html
             */
            'httpHandler' => null,

            /**
             * Connection Pool.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_setting_the_connection_pool
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_connection_pool.html
             */
            'connectionPool' => null,

            /**
             * Connection Selector.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_setting_the_connection_selector
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_selectors.html
             */
            'connectionSelector' => null,

            /**
             * Serializer.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_setting_the_serializer
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_serializers.html
             */
            'serializer' => null,

            /**
             * Connection Factory.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_setting_a_custom_connectionfactory
             */
            'connectionFactory' => null,

            /**
             * Endpoint.
             *
             * @see https://www.elastic.co/guide/en/elasticsearch/client/php-api/2.0/_configuration.html#_set_the_endpoint_closure
             */
            'endpoint' => null,

        ],
    ],

];