Statistics

Server

Server related statistics are rooted at server. with following statistics:

Name	Type	Description
uptime	Gauge	Current server uptime in seconds
concurrency	Gauge	Number of worker threads
memory_allocated	Gauge	Current amount of allocated memory in bytes. Total of both new and old Envoy processes on hot restart.
memory_heap_size	Gauge	Current reserved heap size in bytes. New Envoy process heap size on hot restart.
memory_physical_size	Gauge	Current estimate of total bytes of the physical memory. New Envoy process physical memory size on hot restart.
live	Gauge	1 if the server is not currently draining, 0 otherwise
state	Gauge	Current State of the Server.
parent_connections	Gauge	Total connections of the old Envoy process on hot restart
total_connections	Gauge	Total connections of both new and old Envoy processes
version	Gauge	Integer represented version number based on SCM revision or stats_server_version_override if set.
days_until_first_cert_expiring	Gauge	Number of days until the next certificate being managed will expire
seconds_until_first_ocsp_response_expiring	Gauge	Number of seconds until the next OCSP response being managed will expire
hot_restart_epoch	Gauge	Current hot restart epoch – an integer passed via command line flag --restart-epoch usually indicating generation.
hot_restart_generation	Gauge	Current hot restart generation – like hot_restart_epoch but computed automatically by incrementing from parent.
initialization_time_ms	Histogram	Total time taken for Envoy initialization in milliseconds. This is the time from server start-up until the worker threads are ready to accept new connections
debug_assertion_failures	Counter	Number of debug assertion failures detected in a release build if compiled with --define log_debug_assert_in_release=enabled or zero otherwise
envoy_bug_failures	Counter	Number of envoy bug failures detected in a release build. File or report the issue if this increments as this may be serious.
envoy_notifications	Counter	Number of envoy notifications detected. File or report the issue if this increments as this may be serious. Please include logs from the notification component at the debug level. See command line option –component-log-level for details.
static_unknown_fields	Counter	Number of messages in static configuration with unknown fields
dynamic_unknown_fields	Counter	Number of messages in dynamic configuration with unknown fields
wip_protos	Counter	Number of messages and fields marked as work-in-progress being used

Server Compilation Settings

Server Compilation Settings related statistics are rooted at server.compilation_settings. with following statistics:

Name	Type	Description
fips_mode	Gauge	Integer representing whether the envoy build is FIPS compliant or not