Login into WAS Admin Console
Login into WAS Admin Console: https://<WAS_ADMIN_HOST>:<WAS_ADMIN_PORT>/ibm/console
Navigate to certificate configuration section
Go to Security (Left Nav) -> SSL certificate and key management and click on Key stores and certificates link.
Select the KeyStore
Click on NodeDefaultKeyStore.
Navigate to Personal certificates section
Click on Personal certificates.
Start receipt of certificate
Click on Receive from a certificate authority.
Provide the certificate details
Provide the SSL certificate path. Click on Apply.
Make sure the .crt file received from CA is copied to WAS machine for e.g. /opt/IBM/WebSphere/Profiles/DefaultAppSrv01/etc/xxxssl.crt
The new certificate will get added. Click on Save.
Check the certificate details
The certificate details can be seen as below
Restart the server
Server restart is mandatory to get the certificate in effect.