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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. |
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 :ref:stats_server_version_override |
days_until_first_cert_expiring | Gauge | Number of days until the next certificate being managed will expire |
hot_restart_epoch | Gauge | Current hot restart epoch |
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 |
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 |
File system
Statistics related to file system are emitted in the filesystem. namespace.
Name | Type | Description |
|---|---|---|
write_buffered | Counter | Total number of times file data is moved to Envoy’s internal flush buffer |
write_completed | Counter | Total number of times a file was successfully written |
write_failed | Counter | Total number of times an error occurred during a file write operation |
flushed_by_timer | Counter | Total number of times internal flush buffers are written to a file due to flush timeout |
reopen_failed | Counter | Total number of times a file was failed to be opened |
write_total_buffered | Gauge | Current total size of internal flush buffer in bytes |
