destination: Frequent redundant discovery updates #8677
Description
#8666 includes logs that show the destination controller serving redundant
discovery updates roughly every 10 seconds (though sometimes up to 60s apart):
[ 390.340324s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 400.338156s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 410.359043s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 420.344174s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 430.338443s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 440.343410s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 470.336826s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 480.343436s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 490.339913s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 500.345823s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 510.341853s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 520.337896s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 550.335535s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 560.345701s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 610.338643s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 620.343356s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 630.338879s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 640.338325s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 670.336862s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 690.339669s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 730.335908s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 750.339219s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 770.336963s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 790.335917s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
[ 850.341237s] DEBUG ThreadId(01) outbound:accept{client.addr=10.244.7.14:50170}:proxy{addr=10.0.115.236:5432}:tcp: linkerd_proxy_discover::from_resolve: Changed change=Insert(10.244.2.2:5432, Endpoint { addr: Remote(ServerAddr(10.244.2.2:5432)), tls: Some(ClientTls { server_id: ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local")), alpn: Some(AlpnProtocols("transport.l5d.io/v1")) }), metadata: Metadata { labels: {"control_plane_ns": "linkerd", "namespace": "multi", "pod": "postgres-instance1-5f7t-0", "service": "postgres-ha", "serviceaccount": "postgres-instance", "statefulset": "postgres-instance1-5f7t"}, protocol_hint: Http2, opaque_transport_port: Some(4143), identity: Some(ServerId(Name("postgres-instance.multi.serviceaccount.identity.linkerd.cluster.local"))), authority_override: None }, logical_addr: Some(LogicalAddr(postgres-ha.multi.svc.cluster.local:5432)), protocol: (), opaque_protocol: false })
While these updates should not cause the logic bug described in the issue, they
do seem likely to cause unnececessary work: the balancer endpoint will be
replaced each time an update is processed, causing new connections to be
created. In large clusters, this is probably taxing on the destination
controller as it is forced to perform unnecessary I/O with all of its clients.
Why are these redundant updates being sent? Are they preventable?