proxy: v2.109.0 #4957
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proxy: v2.109.0 #4957
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This release includes several major changes to the proxy's behavior: - Service profile lookups are now necessary and fundamental to outbound discovery for HTTP traffic. That is, if a service profile lookup is rejected, endpoint discovery will not be performed; and endpoint discovery must succeed for all destinations that are permitted by service profiles. This simplifies caching and buffering to reduce latency (especially under concurrency). - Service discovery is now performed for all TCP traffic, and connections are balanced over endpoints according to connection latency. - This enables mTLS for **all** meshed connections; not just HTTP. - Outbound TCP metrics are now hydrated with endpoint-specific labels. --- * outbound: Cache balancers within profile stack (linkerd/linkerd2-proxy#641) * outbound: Remove unused error type (linkerd/linkerd2-proxy#648) * Eliminate the ConnectAddr trait (linkerd/linkerd2-proxy#649) * profiles: Do not rely on tuples as stack targets (linkerd/linkerd2-proxy#650) * proxy-http: Remove unneeded boilerplate (linkerd/linkerd2-proxy#651) * outbound: Clarify Http target types (linkerd/linkerd2-proxy#653) * outbound: TCP discovery and load balancing (linkerd/linkerd2-proxy#652) * metrics: Add endpoint labels to outbound TCP metrics (linkerd/linkerd2-proxy#654)
hawkw
approved these changes
Sep 10, 2020
The proxy performs endpoint discovery for unnamed services, but not service profiles. The destination controller and proxy have been updated to support lookups for unnamed services in #4727 and linkerd/linkerd2-proxy#626, respectively. This change modifies the injection template so that the `proxy.destinationGetNetworks` configuration enables profile discovery for all networks on which endpoint discovery is permitted.
kleimkuhler
approved these changes
Sep 10, 2020
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This release includes several major changes to the proxy's behavior:
discovery for HTTP traffic. That is, if a service profile lookup is
rejected, endpoint discovery will not be performed; and endpoint
discovery must succeed for all destinations that are permitted by
service profiles. This simplifies caching and buffering to reduce
latency (especially under concurrency).
connections are balanced over endpoints according to connection
latency.