Timeout in instance credentials fatal error

[joehoyle]

When running wp elasticpress index I observed this error:

Fatal error: Uncaught Aws\Exception\CredentialsException: Error retrieving credential from ECS (cURL error 28: Operation timed out after 1054 milliseconds with 0 bytes received (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for http://169.254.170.2/v2/credentials/ccc60c8d-eff2-4c31-a677-c57a6d71f261) in /usr/src/app/vendor/aws/aws-sdk-php/src/Credentials/EcsCredentialProvider.php:74
Stack trace:
#0 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(204): Aws\Credentials\EcsCredentialProvider->Aws\Credentials\{closure}(Object(GuzzleHttp\Exception\ConnectException))
#1 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(153): GuzzleHttp\Promise\Promise::callHandler(2, Array, NULL)
#2 /usr/src/app/vendor/guzzlehttp/promises/src/TaskQueue.php(48): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}()
#3 /usr/src/app/vendor/guzzlehttp/guzzle/src/Handler/CurlMultiHandler.php(158): GuzzleHttp\Promise\TaskQueue->run()
#4 /usr/src/app/vendor/guzzlehttp/guzzle/src/Handler/CurlMultiHandler.php(183): GuzzleHttp\Handler\CurlMultiHandler->tick()
#5 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(248): GuzzleHttp\Handler\CurlMultiHandler->execute(true)
#6 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(224): GuzzleHttp\Promise\Promise->invokeWaitFn()
#7 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(269): GuzzleHttp\Promise\Promise->waitIfPending()
#8 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(226): GuzzleHttp\Promise\Promise->invokeWaitList()
#9 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(269): GuzzleHttp\Promise\Promise->waitIfPending()
#10 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(226): GuzzleHttp\Promise\Promise->invokeWaitList()
#11 /usr/src/app/vendor/guzzlehttp/promises/src/Promise.php(62): GuzzleHttp\Promise\Promise->waitIfPending()
#12 /usr/src/app/vendor/altis/enhanced-search/inc/namespace.php(295): GuzzleHttp\Promise\Promise->wait()
#13 /usr/src/app/vendor/altis/enhanced-search/inc/namespace.php(270): Altis\Enhanced_Search\sign_psr7_request(Object(GuzzleHttp\Psr7\Request))
#14 /usr/src/app/vendor/altis/enhanced-search/inc/namespace.php(252): Altis\Enhanced_Search\sign_wp_request(Array, 'https://search-...')
#15 /usr/src/app/wordpress/wp-includes/class-wp-hook.php(292): Altis\Enhanced_Search\on_http_request_args(Array, 'https://search-...')
#16 /usr/src/app/wordpress/wp-includes/plugin.php(212): WP_Hook->apply_filters(Array, Array)
#17 /usr/src/app/wordpress/wp-includes/class-http.php(232): apply_filters('http_request_ar...', Array, 'https://search-...')
#18 /usr/src/app/wordpress/wp-includes/http.php(145): WP_Http->request('https://search-...', Array)
#19 /usr/src/app/vendor/altis/enhanced-search/inc/namespace.php(1788): wp_remote_request('https://search-...', Array)
#20 /usr/src/app/wordpress/wp-includes/class-wp-hook.php(292): Altis\Enhanced_Search\split_large_ep_request(Object(WP_Error), Array, Array, 0)
#21 /usr/src/app/wordpress/wp-includes/plugin.php(212): WP_Hook->apply_filters(Object(WP_Error), Array)
#22 /usr/src/app/vendor/10up/elasticpress/includes/classes/Elasticsearch.php(1066): apply_filters('ep_do_intercept...', Object(WP_Error), Array, Array, 0)
#23 /usr/src/app/vendor/10up/elasticpress/includes/classes/Elasticsearch.php(954): ElasticPress\Elasticsearch->remote_request('ep-rappleraltis...', Array, Array, 'bulk_index')
#24 /usr/src/app/vendor/10up/elasticpress/includes/classes/Indexable.php(318): ElasticPress\Elasticsearch->bulk_index('ep-rappleraltis...', 'post', '{"index":{"_id"...')
#25 /usr/src/app/vendor/10up/elasticpress/includes/classes/Command.php(920): ElasticPress\Indexable->bulk_index(Array)
#26 /usr/src/app/vendor/10up/elasticpress/includes/classes/Command.php(648): ElasticPress\Command->index_helper(Object(ElasticPress\Indexable\Post\Post), Array)
#27 [internal function]: ElasticPress\Command->index(Array, Array)
#28 phar:///usr/local/bin/wp/vendor/wp-cli/wp-cli/php/WP_CLI/Dispatcher/CommandFactory.php(98): call_user_func(Array, Array, Array)

It seems that the request for instance credentials has a timeout of 1 second. I don't know why the request took that long, but this seems like an issue.