Enabling SSL encryption for DSEFS

DSEFS can use SSL encryption.

There are two parts to enabling SSL encryption for the DataStax Enterprise File System (DSEFS):
  • Node-to-node encryption
  • Client-to-node encryption
Enabling node-to-node encryption in DSE automatically enables encrypted communication between DSEFS nodes. DSE nodes with client-to-node encryption enabled allow SSL connections from the DSEFS shell.

Configuring the DSEFS shell to use SSL encryption

In most cases, you don't need to add any DSEFS shell settings to connect using SSL. If a ~/.dse/dsefs-shell.yaml configuration file cannot be found, DSEFS shell attempts to load server-side configuration and SSL settings from DSE configuration files.

To manually configure SSL, create and edit the DSEFS shell configuration file. The DSEFS shell is configured in the ~/.dse/dsefs-shell.yaml configuration file. Add the following settings to enable SSL encryption:

encryption_options:
  enabled: true 
  optional: true 
  truststore: 
  truststore_type: 
  truststore_password: 
  keystore: 
  keystore_type: 
  keystore_password: 
  protocol: 
  algorithm: 
  cipher_suites: 
  require_endpoint_verification: false 

The same settings can be given as dse fs command-line options, except keystore_password, truststore_password, and cipher_suites. If passwords are not given in the configuration file, they will be prompted for at the DSEFS shell startup. The command line options override settings read from the configuration file.

Note: If a non-optional secure connection is established, a [secure] flag will appear in the prompt of the DSEFS shell.
enabled
Enables client-to-node encryption.

Default: false

optional
When optional is selected, both encrypted and unencrypted connections over native transport are allowed. That is a necessary transition state to facilitate enabling client to node encryption on live clusters without inducing an outage for existing unencrypted clients. Typically, once existing clients are migrated to encrypted connections, optional is unselected in order to enforce native transport encryption.

Default: false

truststore
Relative path from DSE installation directory or absolute path to truststore containing the trusted certificate for authenticating remote servers.
Note: Truststore password and path is only required when require_client_auth is set to true.

Default: resources/dse/conf/.truststore

truststore_type
Valid types are JKS, JCEKS, or PKCS12. For file-based truststores, use PKCS12.
Attention: Due to an OpenSSL issue, you cannot use a PKCS12 truststore that was generated via OpenSSL. For example, a truststore generated via the following command will not work with DSE:
openssl pkcs12 -export -nokeys -out truststore.pfx -in intermediate.chain.pem
However, truststores generated via Java's keytool and then converted to PKCS12 work with DSE. Example:
keytool -importcert -alias rootca -file rootca.pem -keystore truststore.jks
keytool -importcert -alias intermediate -file intermediate.pem -keystore truststore.jks
keytool -importkeystore -srckeystore truststore.jks -destkeystore truststore.pfx -deststoretype pkcs12 

Default: JKS

truststore_password
Password for the truststore. This must match the password used when generating the keystore and truststore.
Note: Truststore password and path is only required when require_client_auth is set to true.

Default: cassandra

keystore_type
Valid types are JKS, JCEKS, PKCS11, or PKCS12. For file-based keystores, use PKCS12.
Attention: DataStax supports PKCS11 as a keystore_type only on nodes with cassandra workloads.

PKCS11 is not supported as a truststore_type.

Default: JKS

keystore
Relative path from DSE installation directory or absolute path to the Java keystore (JKS) suitable for use with Java Secure Socket Extension (JSSE), which is the Java version of the Secure Sockets Layer (SSL), and Transport Layer Security (TLS) protocols. The keystore contains the private key used to encrypt outgoing messages.

Default: resources/dse/conf/.keystore

keystore_password
Password for the keystore.

Default: cassandra

protocol

Default: TLS

algorithm

Default: SunX509

cipher_suites
Supported ciphers:
  • TLS_RSA_WITH_AES_128_CBC_SHA
  • TLS_RSA_WITH_AES_256_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_DHE_RSA_WITH_AES_256_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
  • TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA

Default: [TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_DHE_RSA_WITH_AES_128_CBC_SHA,TLS_DHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA]

require_client_auth
Enables certificate authentication for client-to-node encryption.
  • true - Require certificate authentication for client-to-node encryption. Client certificates must be present on all nodes in the cluster.
  • false - Do not require certificate authentication for client-to-node encryption.

Default: false