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Ashvitha f95ffe0355 Allow HCP metrics collection for Envoy proxies Co-authored-by: Ashvitha Sridharan <ashvitha.sridharan@hashicorp.com> Co-authored-by: Freddy <freddygv@users.noreply.github.com> Add a new envoy flag: "envoy_hcp_metrics_bind_socket_dir", a directory where a unix socket will be created with the name `<namespace>_<proxy_id>.sock` to forward Envoy metrics. If set, this will configure: - In bootstrap configuration a local stats_sink and static cluster. These will forward metrics to a loopback listener sent over xDS. - A dynamic listener listening at the socket path that the previously defined static cluster is sending metrics to. - A dynamic cluster that will forward traffic received at this listener to the hcp-metrics-collector service. Reasons for having a static cluster pointing at a dynamic listener: - We want to secure the metrics stream using TLS, but the stats sink can only be defined in bootstrap config. With dynamic listeners/clusters we can use the proxy's leaf certificate issued by the Connect CA, which isn't available at bootstrap time. - We want to intelligently route to the HCP collector. Configuring its addreess at bootstrap time limits our flexibility routing-wise. More on this below. Reasons for defining the collector as an upstream in `proxycfg`: - The HCP collector will be deployed as a mesh service. - Certificate management is taken care of, as mentioned above. - Service discovery and routing logic is automatically taken care of, meaning that no code changes are required in the xds package. - Custom routing rules can be added for the collector using discovery chain config entries. Initially the collector is expected to be deployed to each admin partition, but in the future could be deployed centrally in the default partition. These config entries could even be managed by HCP itself.		2 years ago
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internal/watch	…
api_gateway.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
connect_proxy.go	Allow HCP metrics collection for Envoy proxies	2 years ago
data_sources.go	…
data_sources_oss.go	…
deep-copy.sh	Implement APIGateway proxycfg snapshot (#16194 )	2 years ago
ingress_gateway.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
manager.go	proxycfg: ensure that an irrecoverable error in proxycfg closes the xds session and triggers a replacement proxycfg watcher (#16497 )	2 years ago
manager_test.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
mesh_gateway.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
mesh_gateway_oss.go	…
naming.go	…
naming_oss.go	…
naming_test.go	…
proxycfg.deepcopy.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
proxycfg.go	…
snapshot.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
snapshot_test.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
state.go	proxycfg: ensure that an irrecoverable error in proxycfg closes the xds session and triggers a replacement proxycfg watcher (#16497 )	2 years ago
state_oss_test.go	…
state_test.go	Allow HCP metrics collection for Envoy proxies	2 years ago
terminating_gateway.go	Fix issue where terminating gateway service resolvers weren't properly cleaned up (#16498 )	2 years ago
testing.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
testing_api_gateway.go	Inline API Gateway TLS cert code (#16295 )	2 years ago
testing_connect_proxy.go	Allow HCP metrics collection for Envoy proxies	2 years ago
testing_ingress_gateway.go	Add ServiceResolver RequestTimeout for route timeouts to make TerminatingGateway upstream timeouts configurable (#16495 )	2 years ago
testing_mesh_gateway.go	Add ServiceResolver RequestTimeout for route timeouts to make TerminatingGateway upstream timeouts configurable (#16495 )	2 years ago
testing_oss.go	…
testing_peering.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago
testing_terminating_gateway.go	Add extension validation on config save and refactor extensions. (#16110 )	2 years ago
testing_tproxy.go	troubleshoot: service to service validation (#16096 )	2 years ago
testing_upstreams.go	Add ServiceResolver RequestTimeout for route timeouts to make TerminatingGateway upstream timeouts configurable (#16495 )	2 years ago
upstreams.go	Protobuf Refactoring for Multi-Module Cleanliness (#16302 )	2 years ago