Do I Need to Reinstall an SSL Certificate After Renewing It?

Yes. You need to reinstall the SSL certificate.

An SSL certificate issued by a CA is one year, and it becomes invalid when it expires.

Renewing an SSL certificate is to purchase a new certificate with the exactly same configurations as the original one. The configurations include the certificate authority, certificate type, domain type, domain quantity, and primary domain name. So, the renewed SSL certificate must be deployed where the original one locates.

For details, see How Do I Apply an SSL Certificate to Other Huawei Cloud Services?

To install certificates on Tomcat, Nginx, Apache, or IIS servers, you can refer to Table 1.