This topic provides information about generating SSL certificates for client-to-node encryption or node-to-node encryption. If you generate the certificates for one type of encryption, you do not need to generate them again for the other: the same certificates are used for both.
All nodes must have all the relevant SSL certificates on all nodes. A keystore contains private keys. The truststore contains SSL certificates for each node and doesn't require signing by a trusted and recognized public certification authority.
To prepare server certificates:
Generate the private and public key pair for the nodes of the cluster leaving the key password the same as the keystore password:
keytool -genkey -alias <dse_node0> -keyalg RSA -keystore .keystore
Repeat the previous step on each node using a different alias for each one.
Export the public part of the certificate to a separate file and copy these certificates to all other nodes.
keytool -export -alias dse -file dsenode0.cer -keystore .keystore
Add the certificate of each node to the truststore of each node, so nodes can verify the identity of other nodes.
A prompt for setting a password for the newly created truststore appears.
keytool -import -v -trustcacerts -alias <dse_node0> -file <dse_node0>.cer -keystore .truststore keytool -import -v -trustcacerts -alias <dse_node1> -file <dse_node1>.cer -keystore .truststore . . . keytool -import -v -trustcacerts -alias <dsenodeN> -file <dse_nodeN>.cer -keystore .truststore
Make sure .keystore is readable only to the DSE daemon and not by any user of the system.