linkerd/linkerd2

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Ultralight, security-first service mesh for Kubernetes. Main repo for Linkerd 2.x.

Stars: 11.5k
Forks: 1.4k
Open beginner issues: 0
Indexed issues: 187
Avg merge: 3d 22h
Merged PRs (30d): 53

Dominant language: Go
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted good first issue

Beginner friendly Everything

Open All

187 open issues indexed

in multi-cluster setup, probe services use the wrong port to check in version 2026.6.3 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

linkerd/linkerd2#15670 · 1 comment · 1 reaction · Opened Sep 17, 2026
h2 library upgrade causes policy service to terminate connections from clients with a large number of policy watches Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 58/100

linkerd/linkerd2#15665 · Opened Sep 16, 2026
version-2.20 tag was moved at some point Open

bug

linkerd/linkerd2#15664 · 1 assignee · Opened Sep 16, 2026
No max age / idle timeout for pooled proxy-to-proxy HTTP/2 connections — held connections pin buffer memory until pod restart or OOM Open

linkerd/linkerd2#15623 · 1 reaction · 1 assignee · Opened Aug 31, 2026
Bump `sigs.k8s.io/gateway-api` Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#15619 · Opened Aug 28, 2026
`linkerd authz` (and some `linkerd viz` paths) only recognize `HTTPRoute.policy.linkerd.io` Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

linkerd/linkerd2#15618 · Opened Aug 28, 2026
Add an option (policy) to enforce mTLS for outbound traffic Open

enhancement

linkerd/linkerd2#15615 · 1 comment · 10 reactions · 1 assignee · Opened Aug 27, 2026
Investigate a better approach to HTTPRoute rule sorting in linkerd2 Open

enhancement

linkerd/linkerd2#15614 · 1 assignee · Opened Aug 26, 2026
PR #4613 — enabling jemalloc on arm64 (proxy memory never released on Graviton/aarch64) Open

enhancement

linkerd/linkerd2#15613 · 2 reactions · 1 assignee · Opened Aug 26, 2026
Linkerd CNI transparent proxying does not work with gVisor `network=sandbox` Open

bug

linkerd/linkerd2#15611 · 1 assignee · Opened Aug 25, 2026
Destination controller enters unrecoverable death spiral under mass Subscribe() — no backpressure or circuit breaker Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#15583 · 1 comment · Opened Aug 18, 2026
Introduce rate limited or sampled logging Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#15568 · Opened Aug 11, 2026
Cleanup Gateway Install for Helm Integration Tests Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

linkerd/linkerd2#15562 · Opened Aug 6, 2026
Warning: v1 Endpoints is deprecated in v1.33+; use discovery.k8s.io/v1 EndpointSlice Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#15561 · Opened Aug 5, 2026
linkerd-init's iptables REDIRECT causes conntrack reply-tuple corruption, leading to intermittent probe/connection stalls (SYN_SENT [UNREPLIED]) Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

linkerd/linkerd2#15505 · Opened Jul 22, 2026
Add optional PROXY protocol support for inbound TCP connections Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#15474 · 1 comment · Opened Jul 14, 2026
linkerd install/upgrade --crds silently overwrites Helm-managed CRDs and irreversibly bumps storage versions, breaking subsequent helm upgrade Open

bug

linkerd/linkerd2#15471 · 1 assignee · Opened Jul 13, 2026
Publish Helm charts as OCI artifacts Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#15446 · Opened Jul 6, 2026
Support native histograms Open

area/viz enhancement

Difficulty 5/5 Over a week Newbie friendliness 32/100

linkerd/linkerd2#15373 · 1 comment · Opened Jun 10, 2026
Outbound proxy permanently stuck on stale endpoint after silent gRPC stream failure Open

area/proxy bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#15271 · 3 comments · 1 reaction · Opened May 12, 2026
NetworkPolicy port rules bypassed when Linkerd proxy is injected Open

bug

linkerd/linkerd2#15246 · 6 comments · 3 reactions · 1 assignee · Opened May 8, 2026
Extend AuthorizationPolicy targetRef to TLSRoute Open

enhancement

linkerd/linkerd2#15187 · 2 comments · 1 assignee · Opened Apr 20, 2026
bug(proxy): proxy does not adhere to prescribed resource limits Open

pinned

Difficulty 3/5 1-2 days Newbie friendliness 68/100

linkerd/linkerd2#15119 · 1 comment · Opened Apr 2, 2026
Linkerd2 not setting `observerdGeneration` on HTTPRoute when using it for canary rollouts Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

linkerd/linkerd2#14964 · 6 comments · Opened Feb 26, 2026
EndpointSlices not used, even though configured. Open

area/controller enhancement wontfix

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#14781 · 6 comments · 1 reaction · Opened Dec 4, 2025
Support EndpointSlice Synchronization for Linkerd Federated Service Open

area/multicluster enhancement wontfix

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#14445 · 11 comments · 1 reaction · Opened Sep 4, 2025
Support Kubernetes MCS API (ServiceExport / ServiceImport) in Linkerd Open

area/multicluster enhancement pinned

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#14412 · 9 comments · 2 reactions · Opened Aug 26, 2025
Linkerd proxy /metrics inconsistent format Open

area/proxy area/viz bug pinned

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#14249 · 2 comments · Opened Jul 16, 2025
Errors calling webhook "linkerd-policy-validator.linkerd.io" Open

support

linkerd/linkerd2#14096 · 18 comments · 3 reactions · 1 assignee · Opened Jun 3, 2025
Allow automatic rotation of linkerd-trust-anchor CA Open

enhancement pinned

Difficulty 5/5 Over a week Newbie friendliness 35/100

linkerd/linkerd2#13613 · 4 comments · 11 reactions · Opened Jan 30, 2025
Homebrew Tap for installing the CLI? Open

enhancement pinned

linkerd/linkerd2#13355 · 6 comments · 1 reaction · 1 assignee · Opened Nov 20, 2024
Enable the proxy-injector to configure LINKERD2_PROXY_IDENTITY_*_REFRESH Open

enhancement pinned

Difficulty 4/5 3-5 days Newbie friendliness 42/100

linkerd/linkerd2#13136 · 1 comment · 1 reaction · Opened Oct 4, 2024
Linkerd closing connections of long-running gRPC requests Open

area/proxy bug pinned

Difficulty 4/5 3-5 days Newbie friendliness 32/100

linkerd/linkerd2#12964 · 17 comments · 6 reactions · Opened Aug 19, 2024
Outbound HTTP endpoints seems to miscount "ready" endpoints with circuit breaking Open

bug pinned

Difficulty 4/5 3-5 days Newbie friendliness 38/100

linkerd/linkerd2#12961 · 5 comments · Opened Aug 14, 2024
linkerd/client image cannot be found on cr.l5d.io (ghcr.io) Open

area/docs bug

linkerd/linkerd2#12897 · 1 comment · 1 assignee · Opened Jul 28, 2024
Allow port ranges in dynamic authorization policy resources Open

enhancement pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#12624 · 3 comments · 1 reaction · Opened May 20, 2024
add support for Pod Topology Spread Constraints to the linkerd Deployment objects & Helm charts Open

enhancement pinned

Difficulty 3/5 1-2 days Newbie friendliness 48/100

linkerd/linkerd2#11692 · 1 comment · 3 reactions · Opened Dec 4, 2023
Document CNI config specific to each platform Open

area/docs

linkerd/linkerd2#11598 · 2 comments · 1 assignee · Opened Nov 9, 2023
Add dst_target* labels on outbound pod-to-pod multicluster requests Open

area/multicluster enhancement pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#11551 · 1 comment · Opened Oct 31, 2023
Unable to inject Linkerd proxy on OpenShift without configuring privileged SCC on the workload Open

bug pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#11520 · 4 comments · Opened Oct 22, 2023
linkerd-failover extension should support HTTPRoute for pod-to-pod cluster linking Open

area/multicluster enhancement pinned

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#11472 · 8 comments · 3 reactions · Opened Oct 10, 2023
[multicluster] Provide mechanism to disable mirrored service label/annotation copying Open

area/multicluster enhancement pinned

Difficulty 3/5 1-2 days Newbie friendliness 45/100

linkerd/linkerd2#11358 · 4 comments · 4 reactions · Opened Sep 11, 2023
Proxy memory leak over HTTP 1 Open

bug pinned support

Difficulty 5/5 Over a week Newbie friendliness 20/100

linkerd/linkerd2#11012 · 4 comments · Opened Jun 13, 2023
Spans emitted by linkerd-proxy make it hard to use SpanMetrics due to spanName cardinality explosion Open

area/proxy area/tracing enhancement needs/design pinned priority/triage

Difficulty 5/5 Over a week Newbie friendliness 25/100

linkerd/linkerd2#10968 · 2 comments · 3 reactions · Opened May 31, 2023
Multicluster - Support Headless Services that do not match STS serviceName Open

area/multicluster enhancement pinned priority/triage

Difficulty 3/5 1-2 days Newbie friendliness 48/100

linkerd/linkerd2#10916 · 2 comments · Opened May 18, 2023
linkerd-proxy-init config.linkerd.io/skip-subnets skips only inbound traffic Open

enhancement help wanted

Difficulty 4/5 3-5 days Newbie friendliness 48/100

linkerd/linkerd2#10726 · 12 comments · Opened Apr 10, 2023
Multicluster not working properly with k8s-hosted inlets Open

area/docs bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#10593 · 4 comments · Opened Mar 22, 2023
Opaqueness not applied to off-cluster destination with enable-external-profiles annotation Open

area/egress enhancement pinned priority/P2

Difficulty 4/5 3-5 days Newbie friendliness 35/100

linkerd/linkerd2#10354 · 10 comments · 1 reaction · Opened Feb 18, 2023
Replace use of deprecated `--prune-whitelist` kubectl flag Open

area/cli area/test

Difficulty 3/5 1-2 days Newbie friendliness 45/100

linkerd/linkerd2#10215 · 3 comments · Opened Jan 27, 2023
Use the OpenTelemetry protocol in the proxy Open

area/tracing pinned

Difficulty 5/5 Over a week Newbie friendliness 25/100

linkerd/linkerd2#10111 · 6 comments · 10 reactions · Opened Jan 9, 2023

linkerd/linkerd2

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