SingleStore DB

Server Configuration for Secure Client Connections

This section describes how to enable secure connections between clients and the SingleStore DB cluster, but not between nodes within the SingleStore DB cluster. This requires configuring the ssl_cert and ssl_key settings on all aggregators.

Note that, depending on the client configuration, a client connecting to SingleStore DB may or may not use a secure connection even when SSL is enabled on the server. See the Server Configuration to Require Secure Client-Cluster Connections section.

SingleStore Tools
  1. Place server-cert.pem and server-key.pem files in the certs directory on each aggregator in the cluster. You can copy the files from the Generating SSL Certificates section to all aggregators.

    Note that the certs directory and its contents must be owned by the memsql user and group (e.g., chown -R memsql:memsql <directory> after copying the certificates to directory).

  2. Update the SingleStore DB configuration for all aggregators (it is also fine to configure all nodes) to set the ssl_cert and ssl_key settings to the paths to the server-cert.pem and server-key.pem files, respectively. These can be absolute paths, or relative to the SingleStore DB installation directory. You can do this by using sdb-admin update-config. For example:

    sdb-admin list-nodes -q -r aggregator | xargs bash -c '</dev/tty sdb-admin update-config --key ssl_cert --value ./certs/server-cert.pem --memsql-id "$@"' memsql
    
    sdb-admin list-nodes -q -r master | xargs bash -c '</dev/tty sdb-admin update-config --key ssl_cert --value ./certs/server-cert.pem --memsql-id "$@"' memsql
    
    sdb-admin list-nodes -q -r aggregator | xargs bash -c '</dev/tty sdb-admin update-config --key ssl_key --value ./certs/server-key.pem --memsql-id "$@"' memsql
    
    sdb-admin list-nodes -q -r master | xargs bash -c '</dev/tty sdb-admin update-config --key ssl_key --value ./certs/server-key.pem --memsql-id "$@"' memsql
    
  3. Alternatively, edit the memsql.cnf file on all aggregators to add the certificate paths in the [server] section. For example:

    ssl_cert = ./certs/server-cert.pem
    ssl_key = ./certs/server-key.pem
    
  4. Restart all SingleStore DB aggregators.

    sdb-admin restart-node --all