When the Agent is installed, make sure the following steps are completed properly.
Copy the 'domains.infa' file from Informatica PowerCenter to agent host (if the agent is on a remote host).
Set the "INFA_DOMAINS_FILE" environment variable on the host.
E.g. If the domains.infa is in /opt/agent/domans.infa then set "INFA_DOMAINS_FILE" as this:
You may need to logout and log back in for environment variable to be set.
You will also need to set the "INFA_TRUSTSTORE" environment variable. Copy the "infa_truststore.pem" to the agent host and point the "INFA_TRUSTSTORE" to directory where "infa_truststore.pem" is located.