SingleStore DB

Specifying the TLS Version

Use the tls_version global variable to specify the TLS versions allowed by the server. By default, TLS versions TLSv1, TLSv1.1, and TLSv1.2 are supported by SingleStore DB and can be set only at startup.

SELECT @@tls_version;
****
+-----------------------+
| @@tls_version         |
+-----------------------+
| TLSv1,TLSv1.1,TLSv1.2 |
+-----------------------+

The following examples demonstrate how you can update the tls_version variable on your cluster nodes by running SingleStore Tools or MemSQL Ops commands at the Linux command line.

SingleStore Tools

The following command updates the TLS version to TLSv1.2 on all nodes in the cluster.

sdb-admin update-config --key tls_version --value TLSv1.2 --all
****
Toolbox is about to run 'memsqlctl update-config --key tls_version --value TLSv1.2' on the following nodes:
    - On host 127.0.0.1:
      + 27235D3E385B1056478CE11258959592CE49EE82
      + F9F6A7E64946D5D3D1E6F00C175EF00FC240AB97

Would you like to continue? [y/N]: y
✓ Updated configuration on 127.0.0.1
Operation completed successfully

The following commands restart all nodes in the cluster for the new tls_version value to take effect.

sdb-admin stop-node --all
****
✓ Successfully connected to host 127.0.0.1
Toolbox is about to perform the following actions:
  · Stop all nodes in the cluster

Would you like to continue? [y/N]: y
✓ Stopped Master node on 127.0.0.1 (1/1)
✓ Successfully stopped Master node on 1 host
✓ Stopped Master node
✓ Stopped Leaf nodes on 127.0.0.1 (1/1)
✓ Successfully stopped Leaf nodes on 1 host
✓ Stopped Leaf node
Operation completed successfully
sdb-admin start-node --all
****
Toolbox is about to perform the following actions:
  · Start all nodes in the cluster

Would you like to continue? [y/N]: y
✓ Successfully connected to host 127.0.0.1
✓ Started Leaf nodes on 127.0.0.1 (1/1)
✓ Successfully started Leaf nodes on 1 host
✓ Successfully connected to Leaf node
✓ Started Master node on 127.0.0.1 (1/1)
✓ Successfully started Master node on 1 host
✓ Successfully connected to Master node
Operation completed successfully
singlestore -p
****
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 5
Server version: 5.5.58 MemSQL source distribution (compatible; MySQL Enterprise & MySQL Commercial)

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
SELECT @@tls_version;
****
+---------------+
| @@tls_version |
+---------------+
| TLSv1.2       |
+---------------+
1 row in set (0.01 sec)