3511719 - Start/Stop HANA Database in HANA Cockpit failed with error "SAP Control execute over SSL connection failed"

After you had followed the Chapter 4 in Guide How to Secure SAP HANA Cockpit Step-by-Step to secure the connection between SAP HANA Cockpit and SAP Control, the start/stop of the registered HANA Database still failed with below error:

SAP Control execute over SSL connection failed

From the logs of cockpit-hdb-svc, you can find below error:

ERR   #2.0#YYYY MM DD HH:MM:SS:sss #+HH:00#ERROR#com.sap.hana.cockpit.hdb.api.SAPControlServlet#
###xxxxxxxxxxx##cockpit-hdb-svc#com.sap.hana.cockpit.hdb.api.SAPControlServlet########http-nio-x.x.x.x-xxxxx-exec-3#PLAIN##
SAPCTL_SSL_EXECUTE_FAILED: SAP Control execute over SSL connection failed: {"fault":"[SOAP-ENV:Server] SSSLERR_PEER_CERT_UNTRUSTED, SapSSLSessionStart failed in plugin_fopen()"}

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

• SAP HANA Platform Edition 2.0
• SAP HANA Cockpit 2.0

SAPControl, SAP Control, HANA Cockpit, SSSLERR_PEER_CERT_UNTRUSTEDSSSLERR_PEER_CERT_UNTRUSTED, secure, sapstartsrv, SSL , KBA , HAN-DB-SEC , SAP HANA Security & User Management , HAN-CPT-CPT2-SEC , SAP HANA Cockpit 2 (Security) , Problem