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c9dbb6c51a
Co-authored-by: Matt Keeler <mkeeler@users.noreply.github.com> Currently when passing hostname clusters to Envoy, we set each service instance registered with Consul as an LbEndpoint for the cluster. However, Envoy can only handle one per cluster: [2020-06-04 18:32:34.094][1][warning][config] [source/common/config/grpc_subscription_impl.cc:87] gRPC config for type.googleapis.com/envoy.api.v2.Cluster rejected: Error adding/updating cluster(s) dc2.internal.ddd90499-9b47-91c5-4616-c0cbf0fc358a.consul: LOGICAL_DNS clusters must have a single locality_lb_endpoint and a single lb_endpoint, server.dc2.consul: LOGICAL_DNS clusters must have a single locality_lb_endpoint and a single lb_endpoint Envoy is currently handling this gracefully by only picking one of the endpoints. However, we should avoid passing multiple to avoid these warning logs. This PR: * Ensures we only pass one endpoint, which is tied to one service instance. * We prefer sending an endpoint which is marked as Healthy by Consul. * If no endpoints are healthy we emit a warning and skip the cluster. * If multiple unique hostnames are spread across service instances we emit a warning and let the user know which will be resolved.
119 lines
2.7 KiB
Plaintext
119 lines
2.7 KiB
Plaintext
{
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"versionInfo": "00000001",
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"resources": [
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "bar.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s",
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"outlierDetection": {
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}
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "dc2.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s",
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"outlierDetection": {
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}
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "dc4.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "LOGICAL_DNS",
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"connectTimeout": "5s",
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"loadAssignment": {
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"clusterName": "dc4.internal.11111111-2222-3333-4444-555555555555.consul",
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"endpoints": [
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{
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"lbEndpoints": [
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{
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"endpoint": {
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"address": {
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"socketAddress": {
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"address": "123.us-west-2.elb.notaws.com",
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"portValue": 443
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}
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}
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},
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"healthStatus": "HEALTHY",
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"loadBalancingWeight": 1
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}
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]
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}
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]
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},
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"dnsRefreshRate": "10s",
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"dnsLookupFamily": "V4_ONLY",
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"outlierDetection": {
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}
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "foo.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s",
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"outlierDetection": {
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}
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "v1.bar.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s",
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"outlierDetection": {
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}
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},
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{
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"@type": "type.googleapis.com/envoy.api.v2.Cluster",
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"name": "v2.bar.default.dc1.internal.11111111-2222-3333-4444-555555555555.consul",
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"type": "EDS",
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"edsClusterConfig": {
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"edsConfig": {
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"ads": {
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}
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}
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},
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"connectTimeout": "5s",
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"outlierDetection": {
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}
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}
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],
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"typeUrl": "type.googleapis.com/envoy.api.v2.Cluster",
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"nonce": "00000001"
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} |