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rpc: add protocol label to rpc connection metrics#162528

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suj-krishnan:add_protocol_label_to_essential_metrics
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rpc: add protocol label to rpc connection metrics#162528
suj-krishnan wants to merge 1 commit intocockroachdb:masterfrom
suj-krishnan:add_protocol_label_to_essential_metrics

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@suj-krishnan
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@suj-krishnan suj-krishnan commented Feb 5, 2026

This PR adds a new label protocol to peer metrics, where applicable. This will enable us to provide non-disruptive observability to customers for these metrics during gRPC to DRPC migration.
During the migration period, when a cluster is expected to have a mix of grpc and drpc traffic, existing customer dashboards and alerts that use these metrics will show an aggregate of grpc and drpc traffic. Customers can drill-down by the protocol label, to see the split.
For more details, refer to: DRPC migration: Changes to Essential RPC metrics

Epic: CRDB-48931
Fixes: #162513
Release note: None

Epic: CRDB-48931
Fixes: 162513
Release note: None
@suj-krishnan suj-krishnan requested a review from a team as a code owner February 5, 2026 09:19
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rpc: add protocol label to peer metrics

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