TigerGraph supports secure data-in-flight communication, using SSL/TLS encryption protocol. This applies to any outward-facing channel, including GSQL clients, RESTPP endpoints, and the GraphStudio web interface. When SSL/TLS is enabled, HTTPS takes the place of HTTP for RESTPP and GraphStudio connections.
Prerequisites
You should have basic knowledge about how SSL works:
The two main options for obtaining a SSL Certificate are to generate your own self-signed certificate or to purchase a certificate from a trusted Certificate Authority. Regardless of which method you choose, your certificate should be chained to a trusted root certificate embedded in your browser. The options and details for producing a trusted SSL certificate are beyond the scope of this document. The focus of this document is how to use a configure your TigerGraph system to use the certificate to enable SSL.
Option 1: Using a Certificate From A Trusted Agent
First, obtain a SSL certificate from a trusted agent of your choice. Certificate vendors will provide clear instructions for ordering a certificate and then for installing it on your system.
Then you can configure the certificate with gadmin --configure ssl
Option 2: Create a Self-Signed Certificate
There are multiple ways to create a self-signed certificate. One example is shown below.
For simplicity, the method below will use the root certificate directly as the HTTPS server certificate. This method is satisfactory for testing but should not be used for a production system.
In the example below, the Common Name value should be your server hostname, since HTTPS certificates are bound to domain names.
Self-Signed Certificate generation example using openssl
For security reasons, the certificates can only be used with permission 600 or less .
$ chmod 600 ~/nginx-selfsigned.*
Step 2: Configure SSL with gadmin
With the self-signed certificate successfully generated, you can configure it with gadmin, so that all the HTTP traffic will be protected with SSL.
$ gadmin config entry ssl
Nginx.SSL.Enable [ false ]: Enable SSL connection for all HTTP requests
New: true
Nginx.SSL.Key [ <masked> ]: Private key for SSL
New: @privateKey_file_path
Nginx.SSL.Cert [ <masked> ]: Public certificate for SSL
New: @ssl_cert_path
Nginx.ProxySSLVerify [ false ]: Enable verification of the proxied HTTPS server certificate. Recommend to turn on.
New: true
After saving the settings, apply the configuration settings.
gadmin config apply -y
[ Info] Successfully applied configuration change. Please restart services to make it effective immediately.
Then restart the external-facing services: gsql, nginx, and gui.
$ gadmin restart gsql nginx gui -y
Testing Your SSL Connection
Now you may test the connection.
A direct curl request to the server will fail due to certificate verification failure:
$ curl https://localhost:14240
curl: (60) server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
More details here: http://curl.haxx.se/docs/sslcerts.html
curl performs SSL certificate verification by default, using a "bundle"
of Certificate Authority (CA) public keys (CA certs). If the default
bundle file isn't adequate, you can specify an alternate file
using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
the bundle, the certificate verification probably failed due to a
problem with the certificate (it might be expired, or the name might
not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
the -k (or --insecure) option.
In v1.2, the default TCP/IP port for Nginx has changed from 44240 to 14240, to avoid possible port conflicts with Zookeeper.
You may use the -k option to turn off the verification, but it is unsafe and not recommended.
To successfully make requests with curl, you will need to specify the certificate by using the --cacert parameter: