My tickets Create a ticket Enterprise Resources
Home > Search

Knowledge Base 10

Legacy Add-on APIs End of Life FAQ
Common Runtime Legacy Router End-of-Life FAQ [Router 2.0](https://devcenter.heroku.com/articles/heroku-runtime-router-2-0) is the Common Runtime router. Router 2.0 became GA in November 2024 and introduced several performance and security improvements, including HTTP/2 support and keepalives to dynos. Below is the migration timeline and changelog for Router 2.0, maintained here for posterity.
How do I configure OpenSSL to allow the use of legacy cryptographic algorithms After upgrading my app to Heroku-22, OpenSSL 3 no longer allows the use of older hashing algorithms, symmetric ciphers, or key derivation functions. For example, loading a PKCS12 file that uses the RC2-40-CBC cipher for encryption results in an error such as `OpenSSL::PKCS12::PKCS12Error PKCS12_parse: unsupported`.
How do I rotate credentials for my Heroku add-on? I want to follow security best practices for rotating my add-on's credentials but I am unsure how.
Why am I seeing `certs:auto:disable is not a heroku command.`? When trying to disable Automatic Certificate Management (ACM) with `heroku certs:auto:disable` I see the error `certs:auto:disable is not a heroku command.`
Why a Private Space app fails to look up DNS? The app process for a Private Space app intermittently records errors like ``` getaddrinfo: Temporary failure in name resolution (SocketError) ``` when trying to establish network connections with external services.
How do I know if a user deprovisioned my add-on from their app? I want to know if users have deprovisioned my add-on from their apps but I don’t know how to check.
Will stable outbound IP addresses for a Private Space change? I am using a Private Space's stable outbound IP addresses in an IP whitelist to secure our services. I'm wondering if these IPs can change. In that case, I would need to update our whitelist.
How Heroku syncs time? I'd like to know how Heroku syncs time.
Can I use Github Enterprise with Pipeline Review apps?

Dev Center articles 2

Heroku Key-Value Store Heroku Key-Value Store is an add-on that provides a production Redis service with local command line access, metrics and logs.
Upgrading a Heroku Key-Value Store Version Detailed instructions on upgrading your Heroku Key-Value Store version.

Community

Engage with a community of passionate experts to get the answers you need

Heroku Status

Check for known issues on the Heroku Status website

heroku.com Blogs Careers Documentation
Terms of Service Privacy Cookies Cookie Preferences © 2026 Salesforce.com Your Privacy Choices