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envoy.yaml
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#It shows a configuration to disable HTTP/1.x keepalive when heap memory usage reaches 95% and to stop accepting requests when heap memory usage reaches 99%.
#https://www.envoyproxy.io/docs/envoy/v1.16.0/configuration/operations/overload_manager/overload_manager#config-overload-manager
overload_manager:
refresh_interval: 0.25s
resource_monitors:
- name: "envoy.resource_monitors.fixed_heap"
typed_config:
"@type": type.googleapis.com/envoy.config.resource_monitor.fixed_heap.v2alpha.FixedHeapConfig
# TODO: Tune for your system.
max_heap_size_bytes: 2147483648 # 2 GiB
actions:
- name: "envoy.overload_actions.shrink_heap"
triggers:
- name: "envoy.resource_monitors.fixed_heap"
threshold:
value: 0.95
- name: "envoy.overload_actions.stop_accepting_requests"
triggers:
- name: "envoy.resource_monitors.fixed_heap"
threshold:
value: 0.98
static_resources:
listeners:
- address:
socket_address:
address: 0.0.0.0
port_value: 8080
filter_chains:
- filters:
- name: envoy.filters.network.http_connection_manager
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
generate_request_id: true
tracing:
provider:
name: envoy.tracers.zipkin
typed_config:
"@type": type.googleapis.com/envoy.config.trace.v3.ZipkinConfig
collector_cluster: jaeger
collector_endpoint: "/api/v2/spans"
shared_span_context: false
collector_endpoint_version: HTTP_JSON
codec_type: auto
stat_prefix: ingress_http
route_config:
name: local_route
virtual_hosts:
- name: backend
domains:
- "*"
routes:
- match:
prefix: "/service/1"
route:
cluster: service1
decorator:
operation: checkAvailabilityService1
- match:
prefix: "/service/2"
route:
cluster: service2
decorator:
operation: checkAvailabilityService2
http_filters:
- name: envoy.filters.http.router
typed_config: {}
- address:
socket_address:
address: 0.0.0.0
port_value: 8443
filter_chains:
- filters:
- name: envoy.filters.network.http_connection_manager
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
generate_request_id: true
tracing:
provider:
name: envoy.tracers.zipkin
typed_config:
"@type": type.googleapis.com/envoy.config.trace.v3.ZipkinConfig
collector_cluster: jaeger
collector_endpoint: "/api/v2/spans"
shared_span_context: false
collector_endpoint_version: HTTP_JSON
codec_type: auto
stat_prefix: ingress_http
route_config:
name: local_route
virtual_hosts:
- name: backend
domains:
- "*"
routes:
- match:
prefix: "/service/1"
route:
cluster: service1
decorator:
operation: checkAvailabilityService1
- match:
prefix: "/service/2"
route:
cluster: service2
decorator:
operation: checkAvailabilityService2
http_filters:
- name: envoy.filters.http.router
typed_config: {}
transport_socket:
name: envoy.transport_sockets.tls
typed_config:
"@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext
common_tls_context:
tls_certificates:
# The following self-signed certificate pair is generated using:
# $ openssl req -x509 -newkey rsa:2048 -keyout a/front-proxy-key.pem -out a/front-proxy-crt.pem -days 3650 -nodes -subj '/CN=front-envoy'
#
# Instead of feeding it as an inline_string, certificate pair can also be fed to Envoy
# via filename. Reference: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/core/v3/base.proto#config-core-v3-datasource.
#
# Or in a dynamic configuration scenario, certificate pair can be fetched remotely via
# Secret Discovery Service (SDS). Reference: https://www.envoyproxy.io/docs/envoy/latest/configuration/security/secret.
certificate_chain:
inline_string: |
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
private_key:
inline_string: |
-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----
clusters:
- name: service1
connect_timeout: 0.25s
type: strict_dns
lb_policy: round_robin
load_assignment:
cluster_name: service1
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: service1
port_value: 8080
- name: service2
connect_timeout: 0.25s
type: strict_dns
lb_policy: round_robin
load_assignment:
cluster_name: service2
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: service2
port_value: 8080
- name: jaeger
connect_timeout: 1s
type: strict_dns
lb_policy: round_robin
load_assignment:
cluster_name: jaeger
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: jaeger
port_value: 9411
admin:
access_log_path: "/dev/null"
address:
socket_address:
address: 0.0.0.0
port_value: 8001
layered_runtime:
layers:
- name: static_layer_0
static_layer:
envoy:
resource_limits:
listener:
example_listener_name:
connection_limit: 10000
overload:
global_downstream_max_connections: 50000