weizhouapache commented on issue #4520:
URL: https://github.com/apache/cloudstack/issues/4520#issuecomment-1687744396

   a workaround could be: change `RSA keySize < 2048` to `RSA keySize < 1024` 
in `/etc/crypto-policies/back-ends/java.config`
   
   ```
   # cat /etc/crypto-policies/back-ends/java.config
   jdk.tls.ephemeralDHKeySize=2048
   jdk.certpath.disabledAlgorithms=MD2, MD5, DSA, RSA keySize < 2048
   jdk.tls.disabledAlgorithms=DH keySize < 2048, SSLv2, SSLv3, TLSv1, TLSv1.1, 
DHE_DSS, RSA_EXPORT, DHE_DSS_EXPORT, DHE_RSA_EXPORT, DH_DSS_EXPORT, 
DH_RSA_EXPORT, DH_anon, ECDH_anon, DH_RSA, DH_DSS, ECDH, 3DES_EDE_CBC, DES_CBC, 
RC4_40, RC4_128, DES40_CBC, RC2, HmacMD5
   jdk.tls.legacyAlgorithms=
   ```


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