Once in a session, you can enable expert, experimental, and master CLI debug modes. The starting point is the prompt command, which starts an interactive session.
Combined with “experimental-mode” or “expert-mode” it enables even Once activated, you list the new available keywords with “help”. Keywords that were meant for a worker on the Master CLI, allowing you to debug the master process. The CLI received several new commands: Commandīegins an interactive session with the CLI.Īctivates expert mode for every worker accessed from the Master CLI.Īctivates experimental mode for every worker accessed fromĪllows a special mode in the Master CLI which enables all You can learn more about it in the blog post Get to Know the HAProxy Process Manager.
The Master CLI provides an interface for working with the HAProxy worker processes. Note that when enabling health checks with these parameters, HAProxy is not yet able to implicitly inherit the SSL or Proxy Protocol configuration of the server line, so you must explicitly use check-ssl and check-send-proxy, even if the health check port is not overridden. Recall that the dynamic server functions let you create servers on the fly without reloading the HAProxy configuration.Īlso, you can now set the check and check-ssl parameters when creating servers, which were unsupported in prior versions. Next, the Runtime API’s dynamic server feature, which was introduced in HAProxy 2.4 and got expanded keyword support in HAProxy 2.5, is no longer experimental. You can load other providers via the OpenSSL configuration file, which you can find the path for by running openssl version -d. A provider implements the cryptographic algorithms. In this case, you can also specify to load your system’s list of trusted CAs.Ī new Runtime API command, show ssl providers, available when HAProxy was compiled against OpenSSL 3.0, returns a list of providers loaded into OpenSSL. Similarly, the ca-file parameter on a server line in a backend now accepts a directory path, allowing you load multiple CAs to verify a server’s SSL certificate. This parameter now accepts a directory path, allowing you to load multiple CA files so that you can verify certificates that were signed by different authorities. To authenticate clients with client certificates, you set the ca-file parameter on your bind line to indicate which certificate authority (CA) to use to verify the certificate. You can compile HAProxy against OpenSSL 3.0, the latest branch of the OpenSSL library. In the example below, the pathq fetch returns the URL path and query string for the data to hash: The new algorithm is generic, thus allowing you to pass in a sample fetch of the data used to calculate the hash. You can use the new load balancing algorithm, hash, in place of the existing, more specific hash algorithms source, uri, hdr, url_param, and rdp-cookie. Want to try this out? Check out our HTTP/3 demo project. You’ll need to compile HAProxy with a few new options, including the USE_QUIC flag, and also link to a QUIC-compatible version of OpenSSL, such as the one found here. The token protects against malicious actors sending spoofed reset packets. Something else to know is that HAProxy supports stateless reset packets with QUIC, but you must set the global directive cluster-secret, which HAProxy uses to derive a stateless reset token. In other words, the first request will be HTTP/2, but any after that will be HTTP/3. Also note that we return an alt-svc HTTP header, which instructs the client’s browser to switch to the new protocol for subsequent requests. In the example configuration below, we enable HTTP/3 over QUIC by setting a bind line that listens for client connections on UDP port 443. The benefits include fewer round trips between the client and server when establishing a TLS connection, better protection against denial-of-service attacks, and improved connection migration when the user switches between networks. This version of HAProxy adds experimental support for HTTP/3 over QUIC, which is a novel approach to transmitting HTTP messages over UDP instead of TCP. In the following sections, you will find a list of changes included in this version. Register for the webinar HAProxy 2.6 Features Roundup to learn more about this release and participate in a live Q&A with our experts. If you’d like to join the effort, you can find us on GitHub, Slack, Discourse, and the HAProxy mailing list.
Whether developing new functionality, fixing issues, writing documentation, QA testing, hosting CI environments, or submitting bug reports, members of our community continue to drive the project forward. Reporter.As always, the community behind HAProxy made it possible to bring the enhancements in this release.
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