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Server chose an unconfigured cipher suite error in Portworx using ONTAP S3

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ontap-9
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Applies to

  • ONTAP 9.8+
  • ONTAP S3
  • Portworx

Issue

  • The following error is observed when configuring Portworx with ONTAP S3:
tls: server chose an unconfigured cipher suite
  • The cipher being used is ECDHE-RSA-AES256-GCM-SHA384.
  • ECDHE-RSA-AES256-GCM-SHA384, which corresponds to the OpenSSL cipher name ECDHE-RSA-AES256-GCM-SHA384, is allowed in ONTAP:
cluster1::> set advanced
cluster1::*> security config show -interface SSL
 
            (DEPRECATED)-FIPS-Compliant Interface: SSL
                                        FIPS Mode: true
                              Supported Protocols: TLSv1.3, TLSv1.2
                   (DEPRECATED)-Supported Ciphers: ALL:!LOW:!aNULL:!EXP:!eNULL:!3DES:!kDH:!kECDH
                          Supported Cipher Suites: TLS_RSA_WITH_AES_128_CCM,
…
                                                   TLS_ECDHE_RSA_WITH_AES_256_
                                                   GCM_SHA384,

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