We offer Let's Encrypt certificates to customers with a managed server running on Plesk Onyx, Debian 9 or newer or Ubuntu 18.04 and newer. We do not support older operating systems.
To customers with few domains, we recommend to use a different certificate authority. The overhead of configuring Let's Encrypt and automating the issuing and renewing of certificates can pose a significant overhead, unless you have tens of domains.
Customers with cluster¶
There is no native support for this kind of workload and we can't guarantee 100% functionality.
Disadvantages of Let's Encrypt¶
- To make revocations unnecessary, the certificate authority issues certificates valid only for 90 days. As a result, it is necessary to often renew them.
- The API and clients release new versions very often, resulting in the API unavailibility, bugs in the client application etc.
- Lack of support for older operating systems and complicated implementation in special workloads.
We consider Let's Encrypt a reasonable alternative only for servers with a large amount of domains, where there are loose requirements for availibility (personal website, blog, small company website without an e-shop). When the API is not available, or there is a bug in the client application, the certificate might not get renewed, resulting in a service outage. We have seen that happen more than once.