Log EC2 API request failed; retry again. Reason was: – How To Solve Related Issues

Log EC2 API request failed; retry again. Reason was: – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0


Before you read this guide, we recommend you run the Elasticsearch Error Check-Up which detects issues in ES that cause log errors. It’s a free tool that requires no installation and takes 2 minutes to complete.

This guide will help you check for common problems that cause the log ” EC2 API request failed; retry again. Reason was: ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: cloud-aws, discovery, discovery-ec2, plugins and request.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them. Among the dozens of checks included are: shards sizes, thread pools, management queue size, search errors, circuit breakers and many more (join over 700 users who use this free tool).

Log Context

Log “EC2 API request failed; retry again. Reason was:” classname is AwsEc2ServiceImpl.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

         final Random rand = Randomness.get();
        final RetryPolicy retryPolicy = new RetryPolicy(
            (originalRequest; exception; retriesAttempted) -> {
               // with 10 retries the max delay time is 320s/320000ms (10 * 2^5 * 1 * 1000)
               logger.warn("EC2 API request failed; retry again. Reason was:"; exception);
               return 1000L * (long) (10d * Math.pow(2; retriesAttempted / 2.0d) * (1.0d + rand.nextDouble()));

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 X Retries Exceeded With Url In Requ

2 Github Issue Number 28452

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