Symptoms
After upgrade installation Provider found one or several provisioning tasks failed with the following error message:
c.p.p.s.h.e.HCLSenderBean HosOp invocation on host_id#25 caused Exception. Wrapping in InternalError. java.lang.IllegalStateException: java.lang.NullPointerException
at com.parallels.pa.service.host.ejb.HCLSenderBean.getSSLContextForHost(HCLSenderBean.java:305)
Further checks has shown that OA management node is unable to establish connection with target host on port 8352, which is standard for pa-agent (or pem on Windows platform) service. pa-agent listened incoming connection only on port 8353 of the slave host, despite that parameters outlined in corresponding registry key are pointing to correct port and address.
Cause
Starting from OA 7.1, agents on slave hosts are accepting only SSL connections on port 8352 which requires host key and certificate to be present on host itself and OA database. Without the certificate, pa-agent (or pem) will not bind to this port and communication with Management node will be broken.
Resolution
The issue could be fixed only with direct database interaction. Please contact Odin Technical Support team in order to apply a solution.