Whichever way you installed Percona Monitoring and Management 2 (PMM2), using the docker image or an OVF image for your supported virtualized environment, PMM2 enables, by default, two ports for the web connections: 80 for HTTP and 443 for HTTPS. Using HTTPS certificates are requested for encrypting the connection for better security. All the installation [&]

https://www.percona.com/blog/2020/12/09/enabling-https-connections-to-percona-monitoring-and-management-using-custom-certificates/