-
Crypt-LE
Crypt::LE - Let's Encrypt / Buypass / ZeroSSL and other ACME-servers client and library in Perl for obtaining free SSL certificates (inc. generating RSA/ECC keys and CSRs). HTTP/DNS verification is supported out of the box, EAB (External Account Binding) supported, easily extended with plugins, easily dockerized.
-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Normally you can use the same .csr forever if the domain is the same - I normally use LE64 to generate let's encrypt certificates (which can do wildcards also), but if you're purchasing a certificate rather than generating a free one, and you want to generate it right in IIS, you can follow a guide like this. If you generate a wildcard cert like *.domain.com, you can use it for all your subdomains but NOT generally for domain.com itself (depending on your application). You can use the same certificate for all applications provided they support whatever format the certificate is in; mostly these will be in PEM-style anymore so you have the whole cert chain in one file.