Wrong signer set for cloud aws s3 signer or cloud aws signer – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2-2

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Briefly, this error occurs when there is a mismatch between the signer set in the Elasticsearch configuration and the actual signer used by AWS S3. This could be due to an outdated signer or incorrect configuration. To resolve this issue, you can either update the signer in your AWS S3 to match the one in your Elasticsearch configuration or update the signer in your Elasticsearch configuration to match the one used by AWS S3. Also, ensure that the correct region is set in your Elasticsearch configuration.

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This guide will help you check for common problems that cause the log ” wrong signer set for [cloud.aws.s3.signer] or [cloud.aws.signer]: [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard.

Log Context

Log “wrong signer set for [cloud.aws.s3.signer] or [cloud.aws.signer]: [{}]” classname is InternalAwsS3Service.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

if (awsSigner != null) {
            logger.debug("using AWS API signer [{}]"; awsSigner);
            try {
                AwsSigner.configureSigner(awsSigner; clientConfiguration);
            } catch (IllegalArgumentException e) {
                logger.warn("wrong signer set for [cloud.aws.s3.signer] or [cloud.aws.signer]: [{}]"; awsSigner);

        AWSCredentialsProvider credentials;


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