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Add further support for EndpointSlice in multicluster & healthcheck#14953

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matt-mercer wants to merge 1 commit intolinkerd:mainfrom
matt-mercer:mm-support-endpoint-slice-everywhere
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Add further support for EndpointSlice in multicluster & healthcheck#14953
matt-mercer wants to merge 1 commit intolinkerd:mainfrom
matt-mercer:mm-support-endpoint-slice-everywhere

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While EndpointSlice was used in key locations certain paths do not yet use EndpointSlice as described in #14781

Added support to service-mirror, including new cluster_watcher_headless service in multicluster. Updated healthcheck checkMisconfiguredOpaquePort checks to support EndpointSlice.

New test file cluster_watcher_endpointslice_test, and tests added to healthcheck_test.

@matt-mercer matt-mercer requested a review from a team as a code owner February 23, 2026 20:37
@matt-mercer matt-mercer force-pushed the mm-support-endpoint-slice-everywhere branch 2 times, most recently from 21a8ca0 to c04e6fe Compare February 25, 2026 09:48
@matt-mercer matt-mercer force-pushed the mm-support-endpoint-slice-everywhere branch from c04e6fe to b867d66 Compare March 11, 2026 16:45
While EndpointSlice was used in key locations certain paths do not yet use EndpointSlice as described in linkerd#14781

Added support to service-mirror, including new cluster_watcher_headless service in multicluster.  Updated healthcheck checkMisconfiguredOpaquePort checks to support EndpointSlice.

New test file cluster_watcher_endpointslice_test, and tests added to healthcheck_test.

Signed-off-by: Matt Mercer <reg.linkerd2@vurtechs.com>
Signed-off-by: matt-mercer <449892+matt-mercer@users.noreply.github.com>
@matt-mercer matt-mercer force-pushed the mm-support-endpoint-slice-everywhere branch from b867d66 to 9ab05d9 Compare March 21, 2026 10:46
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