Elasticsearch PHP client throwing exception "No alive nodes found in your cluster"

Question

I am trying to do a scan and scroll operation on an index as shown in the example :

$client = ClientBuilder::create()->setHosts([MYESHOST])->build(); $params = [     "search_type" => "scan",    // use search_type=scan     "scroll" => "30s",          // how long between scroll requests. should be small!     "size" => 50,               // how many results *per shard* you want back     "index" => "my_index",     "body" => [         "query" => [             "match_all" => []         ]     ] ];  $docs = $client->search($params);   // Execute the search $scroll_id = $docs['_scroll_id'];   // The response will contain no results, just a _scroll_id  // Now we loop until the scroll "cursors" are exhausted while (\true) {      // Execute a Scroll request     $response = $client->scroll([             "scroll_id" => $scroll_id,  //...using our previously obtained _scroll_id             "scroll" => "30s"           // and the same timeout window         ]     );      // Check to see if we got any search hits from the scroll     if (count($response['hits']['hits']) > 0) {         // If yes, Do Work Here          // Get new scroll_id         // Must always refresh your _scroll_id!  It can change sometimes         $scroll_id = $response['_scroll_id'];     } else {         // No results, scroll cursor is empty.  You've exported all the data         break;     } } 

The first $client->search($params) API call executes fine and I am able to get back the scroll id. But $client->scroll() API fails and I am getting the exception : "Elasticsearch\Common\Exceptions\NoNodesAvailableException No alive nodes found in your cluster"

I am using Elasticsearch 1.7.1 and PHP 5.6.11

Please help

Answer 1

I found the php driver for elasticsearch is riddled with issues, the solution I had was to just implement the RESTful API with curl via php, Everything worked much quicker and debugging was much easier