Announcing Linkerd2 v18.8.2

[Kevin Lingerfelt]

Hello Linkerd2 fans,

We're happy to announce the Linkerd v18.8.2 release. This releases includes a bunch of new features for the Web UI and linkerd CLI. Check 'em out.

• CLI
• New linkerd top command has been added, displays live traffic stats
• linkerd check has been updated with additional checks, now supports a --pre flag for running pre-install checks
• linkerd check and linkerd dashboard now support a --wait flag that tells the CLI to wait for the control plane to become ready
• linkerd tap now supports a --output flag to display output in a wide format that includes src and dst resources and namespaces
• linkerd stat includes additional validation for command line inputs
• All commands that talk to the Linkerd API now show better error messages when the control plane is unavailable
• Web UI
• New individual resources can now be viewed on a resource detail page, which includes stats for the resource itself and its nearest neighbors
• Experimental web-based Top interface accessible at /top, aggregates tap data in real time to display live traffic stats
• The /tap page has multiple improvements, including displaying additional src/dst metadata, improved form controls, and better latency formatting
• All resource tables have been updated to display meshed pod counts, as well as an icon linking to the resource's Grafana dashboard if it is meshed
• The UI now shows more useful information when server errors are encountered
• Proxy
• The h2 crate fixed a HTTP/2 window management bug
• The rustls crate fixed a bug that could improperly fail TLS streams
• Control Plane
• The tap server now hydrates metadata for both sources and destinations

Give the new release a spin and send feedback. As always, if you encounter any issues, please report them on GitHub.

Kevin