it ejects that host from the load balancing pool. As a result, the host remains ejected for a duration of30seconds, which leads to the aforementioned 503 error, if there are no other healthy hosts available.
ENVOY_LOG(debug, "no healthy host for HTTP connection pool"); cluster_info_->stats().upstream_cx_none_healthy_.inc(); } return nullptr; } 根据loadbalancer算法挑选节点(此处worker之间的负载均衡根据不同的负载均衡算法有的是独立的,比如round robin,只有同一个Worker上的才是严格的顺序) HostConstSha...
http_health_check:{...}# HTTP类型的检测;包括此种类型在内的以下四种检测类型必须设置一种;tcp_health_check:{...}# TCP类型的检测;grpc_health_check:{...}# GRPC专用的检测;custom_health_check:{...}# 自定义检测;no_traffic_interval:{...}# 定义未曾调度任何流量至集群时其端点健康检测时间间隔,...
Bug: 503 UC sometimes, upstream_reset_before_response_started#8639 Envoy issuing 503's intermittentlyistio/istio#15285 We tried to change some configuration settings, namely: enable TCP Keep-alives adjust Idle Timeouts (for ex. use default values, disable idle timeout) ...
UH: No healthy upstream hosts in upstream cluster in addition to 503 response code. UF: Upstream connection failure in addition to 503 response code. UO: Upstream overflow (circuit breaking) in addition to 503 response code. NR: Noroute configuredfor a given request in addition to 404 response...
envoy_cluster_upstream_rq{envoy_response_code="503",envoy_cluster_name="hawkeye"} 29 # TYPE envoy_cluster_lb_local_cluster_not_ok counter envoy_cluster_lb_local_cluster_not_ok{envoy_cluster_name="hawkeye"} 0 # TYPE envoy_cluster_lb_zone_routing_sampled counter ...
upstream_rq_maintenance_mode Counter 由于维护模式导致的请求总数为 503 upstream_rq_timeout Counter 等待响应的总请求 upstream_rq_per_try_timeout Counter 每次尝试超时的总请求 upstream_rq_rx_reset Counter 远程重置的总请求 upstream_rq_tx_reset Counter 本地重置的总请求 upstream_rq_retry Counter 总请求...
The downstream of envoy will seeupstream connect error or disconnect/reset before headers(HTTP 503). Our cluster config is simple: name:local_clusterconnect_timeout:15stype:STATIClb_policy:ROUND_ROBINhosts: -socket_address:address:127.0.0.1port_value:15225health_checks: -timeout:5sinterval:10sheal...
连续网关故障:连续5XX的子集,单纯用于http的502、503或504错误,即网关故障; 连续的本地原因故障:Envoy无法连接到上游主机或与上游主机的通信被反复中断; 成功率:主机的聚合成功率数据阈值; 3、Upstreams主动健康状态检测 集群的主机健康状态检测机制需要显式定义,否则,发现的所有上游主机即被视为可用;定义语法 ...
envoy_cluster_upstream_rq{envoy_response_code="200",envoy_cluster_name="hawkeye"} 209 envoy_cluster_upstream_rq{envoy_response_code="503",envoy_cluster_name="hawkeye"} 29 # TYPE envoy_cluster_lb_local_cluster_not_ok counter envoy_cluster_lb_local_cluster_not_ok{envoy_cluster_name="hawkeye"...