Log Unsupported ciphers were requested but cannot be used in this JVM; however there are supported ciphers – How To Solve Related Issues



Log Unsupported ciphers were requested but cannot be used in this JVM; however there are supported ciphers – How To Solve Related Issues

Opster Team

Jan-20, Version: 1.7-8.0

 

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up  which can resolve issues causing many log errors (free and no installation required)

 

This guide will help you check for common problems that cause the log “Unsupported ciphers were requested but cannot be used in this JVM; however there are supported ciphers” 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: plugin.


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 discover the cause of many errors and provides suitable actionable recommendations. 

Log Context

Log “Unsupported ciphers [{}] were requested but cannot be used in this JVM; however there are supported ciphers” classname is SSLService.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

             throw new IllegalArgumentException("none of the ciphers " + Arrays.toString(requestedCiphers.toArray())
                    + " are supported by this JVM");
        }

        if (log && !unsupportedCiphers.isEmpty()) {
            logger.error("unsupported ciphers [{}] were requested but cannot be used in this JVM; however there are supported ciphers " +
                    "that will be used [{}]. If you are trying to use ciphers with a key length greater than 128 bits on an Oracle JVM; " +
                    "you will need to install the unlimited strength JCE policy files."; unsupportedCiphers; supportedCiphersList);
        }

        return supportedCiphersList.toArray(new String[supportedCiphersList.size()]);




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 :

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