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Currently only the gRPC and file based access logs have statistics.
gRPC access log statistics
The gRPC access log has statistics rooted at access_logs.grpc_access_log. with the following statistics:
Name | Type | Description |
|---|---|---|
logs_written | Counter | Total log entries sent to the logger which were not dropped. This does not imply the logs have been flushed to the gRPC endpoint yet. |
logs_dropped | Counter | Total log entries dropped due to network or application level back up. |
File access log statistics
The file access log has statistics rooted at 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 |
