2974161 - Master says: “Cloud Connector on https://xxxxx:8443 does not respond. Check host and port and ensure that the Cloud Connector is running."

When trying to set up High Availability (HA) for SAP Cloud Connector the following error message is shown:

Master says: “Cloud Connector on https://xxxxx:8443 does not respond. Check host and port and ensure that the Cloud Connector is running.”

Shadow instance LJS trace shows trace:

#WARN#com.sap.scc.ha#SCC HA Ping to Master# #PingToMaster failure
com.sap.scc.ha.HaHttpClientException: request https://<SCC master instance>:8443/shadow failed with 500 (Internal Server Error) Cloud Connector on https://<SCC shadow instance>:8443 does not respond. Check host and port and ensure that the Cloud Connector is running.
at com.sap.scc.ha.HaHttpClientSession.checkStatusCode(HaHttpClientSession.java:200)
at com.sap.scc.ha.HaHttpClientSession.execute(HaHttpClientSession.java:127)
at com.sap.scc.ha.PingToMaster.initPush(PingToMaster.java:373)
at com.sap.scc.ha.PingToMaster.run(PingToMaster.java:255)
at java.lang.Thread.run(Thread.java:836)|

Master instance LJS trace show error:

#ERROR#com.sap.scc.ui#http-bio-8443-exec-X# #partner does not respond
com.sap.scc.ha.HaHttpClientException: partner does not respond
at com.sap.scc.ha.HaHttpClientSession.prepare(HaHttpClientSession.java:98)
at com.sap.scc.ha.HaHttpClient.beginNewSessionRepeatingConnect(HaHttpClient.java:43)
at com.sap.scc.ha.PushToShadow.initPush(PushToShadow.java:143)
at com.sap.scc.servlets.ShadowServlet.initHAPush(ShadowServlet.java:646)
at com.sap.scc.servlets.ShadowServlet.dispatch(ShadowServlet.java:122)
at com.sap.scc.servlets.ServletUtilities.service(ServletUtilities.java:42)
[...]

Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert: certificate_unknown
at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2023)
at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1125)
at sun.security.ssl.SSLSocketImpl.waitForClose(SSLSocketImpl.java:1769)
at sun.security.ssl.HandshakeOutStream.flush(HandshakeOutStream.java:124)
at sun.security.ssl.Handshaker.sendChangeCipherSpec(Handshaker.java:1130)

SAP Cloud Connector

HA, high availability, SCC, Cloud Connector, certificate_unknown, master says, Basic constraints, key usage, CA, certificate authority, JDK, JVM , KBA , readhandshakerecord , BC-MID-SCC , SAP Cloud Connector On-Demand/On-Premise Connectivity , Problem