Change Certificates used by Trilio

The following Trilio services are providing certificates for secured access to the Trilio solution.

Service	Port used	Description
TVault-Config	443	Webservice providing the TrilIoVault Dashboard
Nginx (wlm-api)	8780	provides the VIP for wlm-api service
Nginx (Grafana)	3001	VIP for the dashboard of Grafana service running on TrilIioVault VM

Changing the certificate of TVault-Config and Nginx for Grafana Service

The TVault-Config service and the Nginx Resource for the Grafana Dashboard are using the same certificate.

[root@TVM1 ssl]# cd /etc/tvault/ssl/
[root@TVM1 ssl]# ls -lisa server*
 577678 0 lrwxrwxrwx 1 root root 8 Jan 21 14:36 server.crt -> TVM1.crt
 577672 0 lrwxrwxrwx 1 root root 8 Jan 21 14:36 server.key -> TVM1.key
1178820 0 lrwxrwxrwx 1 root root 8 Jan 21 14:36 server.pem -> TVM1.pem

The certificate used is a symlink to a host-specific certificate. Each Trilio VM has its own self-signed certificate by default which is getting recreated every time the TVault-Config service is restarted.

When the certificate for the TVault-Config and Nginx (Grafana) is to be changed to a customer chosen certificate it is required to deactivate the recreation of the certificates upon service restart.

Trilio is planning to change this behavior to make it easier for customers to change the certificate in the future.

1. Login into the Trilio VM via SSH

2. Edit the following file: /home/stack/myansible/lib/python3.6/site-packages/tvault_configurator/tvault_config_bottle.py

3. Look for create_ssl_certificates() in the main function

4. Comment out create_ssl_certificates()

5. Repeat for all nodes of the Trilio cluster

The resulting main function will look like this:

def main():
    # configure the networking
    #create_ssl_certificates()

    http_thread = Thread(target=main_http)
    http_thread.daemon = True  # thread dies with the program
    http_thread.start()

    bottle.debug(True)
    srv = SSLWSGIRefServer(host='::', port=443)
    bottle.run(server=srv, app=app, quiet=False, reloader=False)

Afterward, the certificates can be replaced manually by overwriting the files.

Once the certificates have been replaced by the desired ones restart the TVault-Config service and the Nginx pcs resource.

[root@TVM1 ~]# systemctl restart tvault-config
[root@TVM1 ~]# pcs resource restart lb_nginx-clone
lb_nginx-clone successfully restarted

Changing the certificate used by Nginx for wlm-api service

The certificate provided by the Nginx for the wlm-api service is set during configuration when HTTPS endpoints are configured for the Trilio appliance. This certificate is provided to the end-user or Openstack every time an API call to the Trilio solution is sent.

To change the certificate through the configurator make sure to create HTTPS endpoints and upload the certificate and key using the advanced options of the configurator.

Setting HTTPS at the advanced options

The certificates can be changed manually if necessary.

They are located under /opt/stack/data/cert/

[root@TVM1 ~]# cd /opt/stack/data/cert/
[root@TVM1 cert]# ls -lisa workloadmgr*
 577678 0 lrwxrwxrwx 1 root root 8 Jan 21 14:36 workloadmgr.crt
 577672 0 lrwxrwxrwx 1 root root 8 Jan 21 14:36 workloadmgr.key

These certificates can be replaced manually and the Nginx resource restarted afterward.

[root@TVM1 ~]# pcs resource restart lb_nginx-clone
lb_nginx-clone successfully restarted