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Linkerd Roadmap
This document is intended to describe high-level plans for the Linkerd project and is neither comprehensive nor prescriptive. For a more granular view of planned work, please refer to the project's upcoming milestones.
Server-side policy
Linkerd's ServiceProfile abstraction is primarily focused on client-side
policy/configuration and is inappropriate to address authorization-oriented
policies. We plan on identifying/introducing primitives to support
server-oriented policy/configuration to support authorization as well as
other types of server-centric policy, including the types of configuration
that have been provided by ServiceProfiles, including timeouts, routes,
etc.
These policies will supplant existing workload-level annotations where possible.
Client-side policy, v2
As we identify new primitives/patterns for server-side configuration, we plan
to replace the current ServiceProfile APIs with new client-side primitives
that support the existing resources as well as:
- Circuit-breakers
- Non-cluster-local traffic targets
- TLS requirements
Retries for gRPC services
Linkerd does not currently support for retries for requests with payloads, but this limits the utility of this feature for gRPC services (that necessarily include request payloads). We plan to support retries for unary (non-streaming) gRPC requests.
Mesh expansion
Linkerd's mTLS identity only works for resources managed by Kubernetes. We plan to extend Linkerd to support non-Kubernetes workloads.
OpenMetrics
The OpenMetrics working group is developing a new standard for metric exposition. We plan to support this format and follow best practices identified by this project.