Configuring Your Scheduler for TLS Connections
The scheduler can use TLS for two different connections: the one it makes to Vertica, and the connection it creates when running COPY statements to retrieve data from Kafka. Because the scheduler is a Java application, you supply the TLS key and the certificate used to sign it in a keystore. You also supply a truststore that contains in the certificates that the scheduler should trust. Both the connection to Vertica and to Kafka can use the same keystore and truststore. You can also choose to use separate keystores and truststores for these two connections by setting different JDBC settings for the scheduler. See JDBC Connection Properties for a list of these settings.
See Configure Kafka for TLS for detailed steps on configuring your scheduler to use SSL.
If you choose to use a file format other than the standard Java Keystore (JKS) format for your keystore or truststore files, you must use the correct file extension in the filename. For example, suppose you choose to use a keystore and truststore saved in PKCS#12 format. Then your keystore and trustore files must end with the .pfx or .p12 extension.
If the scheduler does not recognize the file's extension (or there is no extension in the file name), it assumes that the file is in JKS format. If the file is not in JKS format, you will see an error message when starting the scheduler, similar to "Failed to create an SSLSocketFactory when setting up TLS: keystore not found."
Note that if the Kafka server's parameter client.ssl.auth is set to none or requested, you do not need to create a keystore.