Control Channel Configuration

Internode communication uses the control channel to exchange plan information and distribute calls. The control channel is implemented using Spread. For more information, visit spread.org.

The control channel uses a key to encrypt it. The EncryptSpreadComm parameter is a string with the following options:

• An empty parameter indicates the parameter is disabled. If the parameter is empty, encryption will not occur.
• The value vertica indicates that upon restarting the database, Vertica generates the spread encryption key for the cluster.
• The value aws-kms|<key_name>, such as my_test_key indicates that upon restarting the database, Vertica will fetch the named key from the KMS instead of generating its own.

For more information, see Security Parameters.