---
title: Envoyproxy fields
description: envoyproxy module Contains envoy proxy server stats 
url: https://www.elastic.co/elastic/docs-builder/docs/3016/reference/beats/metricbeat/exported-fields-envoyproxy
products:
  - Beats
  - Metricbeat
applies_to:
  - Elastic Cloud Serverless: Generally available
  - Elastic Stack: Generally available
---

# Envoyproxy fields
envoyproxy module

## envoyproxy


## server

Contains envoy proxy server stats
<definitions>
  <definition term="envoyproxy.server.cluster_manager.active_clusters">
    Number of currently active (warmed) clusters
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.cluster_added">
    Total clusters added (either via static config or CDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.cluster_modified">
    Total clusters modified (via CDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.cluster_removed">
    Total clusters removed (via CDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.warming_clusters">
    Number of currently warming (not active) clusters
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.cluster_updated">
    Total cluster updates
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.cluster_updated_via_merge">
    Total cluster updates applied as merged updates
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.update_merge_cancelled">
    Total merged updates that got cancelled and delivered early
    type: integer
  </definition>
  <definition term="envoyproxy.server.cluster_manager.update_out_of_merge_window">
    Total updates which arrived out of a merge window
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.flushed_by_timer">
    Total number of times internal flush buffers are written to a file due to flush timeout
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.reopen_failed">
    Total number of times a file was failed to be opened
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.write_buffered">
    Total number of times file data is moved to Envoys internal flush buffer
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.write_completed">
    Total number of times a file was written
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.write_total_buffered">
    Current total size of internal flush buffer in bytes
    type: integer
  </definition>
  <definition term="envoyproxy.server.filesystem.write_failed">
    Total number of times an error occurred during a file write operation
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.load_error">
    Total number of load attempts that resulted in an error in any layer
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.load_success">
    Total number of load attempts that were successful at all layers
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.num_keys">
    Number of keys currently loaded
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.override_dir_exists">
    Total number of loads that did use an override directory
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.override_dir_not_exists">
    Total number of loads that did not use an override directory
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.admin_overrides_active">
    1 if any admin overrides are active otherwise 0
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.deprecated_feature_use">
    Total number of times deprecated features were used.
    type: integer
  </definition>
  <definition term="envoyproxy.server.runtime.num_layers">
    Number of layers currently active (without loading errors)
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_added">
    Total listeners added (either via static config or LDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_create_failure">
    Total failed listener object additions to workers
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_create_success">
    Total listener objects successfully added to workers
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_modified">
    Total listeners modified (via LDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_removed">
    Total listeners removed (via LDS)
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.total_listeners_active">
    Number of currently active listeners
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.total_listeners_draining">
    Number of currently draining listeners
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.total_listeners_warming">
    Number of currently warming listeners
    type: integer
  </definition>
  <definition term="envoyproxy.server.listener_manager.listener_stopped">
    Total listeners stopped
    type: integer
  </definition>
  <definition term="envoyproxy.server.stats.overflow">
    Total number of times Envoy cannot allocate a statistic due to a shortage of shared memory
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.days_until_first_cert_expiring">
    Number of days until the next certificate being managed will expire
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.live">
    1 if the server is not currently draining, 0 otherwise
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.memory_allocated">
    Current amount of allocated memory in bytes
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.memory_heap_size">
    Current reserved heap size in bytes
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.parent_connections">
    Total connections of the old Envoy process on hot restart
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.total_connections">
    Total connections of both new and old Envoy processes
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.uptime">
    Current server uptime in seconds
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.version">
    Integer represented version number based on SCM revision
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.watchdog_mega_miss">
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.watchdog_miss">
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.hot_restart_epoch">
    Current hot restart epoch
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.concurrency">
    Number of worker threads
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.debug_assertion_failures">
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.dynamic_unknown_fields">
    Number of messages in dynamic configuration with unknown fields
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.state">
    Current state of the Server
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.static_unknown_fields">
    Number of messages in static configuration with unknown fields
    type: integer
  </definition>
  <definition term="envoyproxy.server.server.stats_recent_lookups">
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.header_overflow">
    Total number of connections reset due to the headers being larger than Envoy::Http::Http2::ConnectionImpl::StreamImpl::MAX_HEADER_SIZE (63k)
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.headers_cb_no_stream">
    Total number of errors where a header callback is called without an associated stream. This tracks an unexpected occurrence due to an as yet undiagnosed bug
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.rx_messaging_error">
    Total number of invalid received frames that violated section 8 of the HTTP/2 spec. This will result in a tx_reset
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.rx_reset">
    Total number of reset stream frames received by Envoy
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.too_many_header_frames">
    Total number of times an HTTP2 connection is reset due to receiving too many headers frames. Envoy currently supports proxying at most one header frame for 100-Continue one non-100 response code header frame and one frame with trailers
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.trailers">
    Total number of trailers seen on requests coming from downstream
    type: integer
  </definition>
  <definition term="envoyproxy.server.http2.tx_reset">
    Total number of reset stream frames transmitted by Envoy
    type: integer
  </definition>
</definitions>