1. List the alias of the existing keypair in the jetty keystore:
<installDirectory>/jre/bin/keytool -list -keystore <installDirectory>/PerformanceCenter/jetty/etc/keystore -storepass <keystorePassword>
Example:
/opt/CA/jre/bin/keytool -list -keystore /opt/CA/PerformanceCenter/jetty/etc/keystore -storepass changeit
Keystore type: JKS
Keystore provider: SUN
Your keystore contains 1 entry
myaliasname, Feb 4, 2016, PrivateKeyEntry,
Certificate fingerprint (SHA1): AB:CD:EF:D0:A1:B2:C3:D4:E5:F6:AB:CD:EF:A1:B2:C3:D4:E5:F6:D0
In the example above "myaliasname" would be the alias.
2. When you import the signed certificate make sure to use the alias as noted above.
Example:
/opt/CA/jre/bin/keytool -importcert -trustcacerts -keystore keystore -storepass changeit -alias myaliasname -keypass changeit -file myaliasname.crt