Traefik v2.11.52: Patch Release with Key Fixes for Performance and Stability

The Traefik team has released v2.11.52, a patch version focusing on resolving performance bottlenecks and cleaning up deprecated options. This release is particularly important for developers using OpenTelemetry with TLS mutual authentication or relying on the deprecated pased command-line flag.

• OpenTelemetry Plugin Performance: Fixed a severe performance degradation that occurred when TLS mutual authentication (tls.clientAuth) was enabled in the OpenTelemetry configuration. The issue caused excessive CPU usage and latency, especially in environments with frequent connection renegotiation.
• Removal of Deprecated --pased Flag: The deprecated --pased command-line option has been removed. Users should migrate to the equivalent plugin configuration or the --experimental.plugins.<name> setup as previously documented.
• Bug Fixes: Additional minor fixes address edge cases in routing and middleware evaluation, improving overall stability under high load.

For developers relying on OpenTelemetry for observability, this update is critical to avoid performance hits in production. The removal of the deprecated --pased flag ensures cleaner startup parameters and aligns Traefik with modern plugin management. Upgrading is straightforward via the official Docker image traefik:v2.11.52 or by updating your package manager.

Source: https://github.com/traefik/traefik/releases/tag/v2.11.52