HTTP and TCP
Long name | Short name | Description |
---|---|---|
NoHealthyUpstream | UH | No healthy upstream hosts in upstream cluster in addition to 503 response code. |
UpstreamConnectionFailure | UF | Upstream connection failure in addition to 503 response code. |
UpstreamOverflow | UO | Upstream overflow (circuit breaking ) in addition to 503 response code. |
NoRouteFound | NR | No route configured for a given request in addition to 404 response code or no matching filter chain for a downstream connection. |
UpstreamRetryLimitExceeded | URX | The request was rejected because the upstream retry limit (HTTP) or maximum connect attempts (TCP) was reached. |
NoClusterFound | NC | Upstream cluster not found. |
DurationTimeout | DT | When a request or connection exceeded max_connection_duration or max_downstream_connection_duration . |
HTTP only
Long name | Short name | Description |
---|---|---|
DownstreamConnectionTermination | DC | Downstream connection termination. |
FailedLocalHealthCheck | LH | Local service failed health check request in addition to 503 response code. |
UpstreamRequestTimeout | UT | Upstream request timeout in addition to 504 response code. |
LocalReset | LR | Connection local reset in addition to 503 response code. |
UpstreamRemoteReset | UR | Upstream remote reset in addition to 503 response code. |
UpstreamConnectionTermination | UC | Upstream connection termination in addition to 503 response code. |
DelayInjected | DI | The request processing was delayed for a period specified via fault injection . |
FaultInjected | FI | The request was aborted with a response code specified via fault injection . |
RateLimited | RL | The request was ratelimited locally by the HTTP rate limit filter in addition to 429 response code. |
UnauthorizedExternalService | UAEX | The request was denied by the external authorization service. |
RateLimitServiceError | RLSE | The request was rejected because there was an error in rate limit service. |
InvalidEnvoyRequestHeaders | IH | The request was rejected because it set an invalid value for a strictly-checked header in addition to 400 response code. |
StreamIdleTimeout | SI | Stream idle timeout in addition to 408 or 504 response code. |
DownstreamProtocolError | DPE | The downstream request had an HTTP protocol error. |
UpstreamProtocolError | UPE | The upstream response had an HTTP protocol error. |
UpstreamMaxStreamDurationReached | UMSDR | The upstream request reached max stream duration. |
OverloadManagerTerminated | OM | Overload Manager terminated the request. |
DnsResolutionFailed | DF | The request was terminated due to DNS resolution failure. |
DropOverload | DO | The request was terminated in addition to 503 response code due to drop_overloads . |