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@ -4,6 +4,12 @@ page_title: Consul catalog v2 architecture
description: Learn about version 2 of the Consul catalog, which uses GAMMA specified resources. Learn how the v2 catalog corresponds to the v1 catalog.
---
<Warning>
The v2 catalog API and Traffic Permissions API are currently in beta. This documentation supports testing and development scenarios. Do not use these APIs in secure production environments.
</Warning>
# Consul catalog v2 architecture
This topic provides information about version 2 (v2) of the Consul catalog API. The catalog tracks registered services and their locations for both service discovery and service mesh use cases.
@ -52,4 +58,4 @@ The following table describes resources in the v2 catalog, how they generally co
| Health check | None | A resource for defining the health checks for a workload. | [Service instance health check](/consul/docs/services/usage/checks) | [Liveness, Readiness, and Startup Probes](https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle/#container-probes) | Created by Kubernetes |
| Proxy configuration | `mesh` | Represents a configuration for a sidecar or gateway proxy. | `Proxy` field in service definition | None | Created by Kubernetes or user CRD |
| Destinations | `catalog` | Represents explicit service upstreams. When using the v1 catalog, these upstreams are configured in Helm chart as [Upstream Service annotations](/consul/docs/k8s/annotations-and-labels#consul-hashicorp-com-connect-service-upstreams) | [Proxy Configuration](/consul/docs/connect/proxies/envoy#envoy-proxy-configuration-for-service-mesh) | None | Created by Kubernetes |
| Traffic permissions| `auth` | Enables L4 traffic authorization according to workload identity instead of service identity. | [Service intentions](/consul/docs/connect/intentions) | None | Created by user CRD |
| Traffic permissions| `auth` | Enables L4 traffic authorization according to workload identity instead of service identity. | [Service intentions](/consul/docs/connect/intentions) | None | Created by user CRD |