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Listener
Every listener has a statistics tree rooted at listener.
. with the following statistics:| Name | Type | Description |
|---|---|---|
| downstream_cx_total | Counter | Total connections |
| downstream_cx_destroy | Counter | Total destroyed connections |
| downstream_cx_active | Gauge | Total active connections |
| downstream_cx_length_ms | Histogram | Connection length milliseconds |
| downstream_pre_cx_timeout | Counter | Sockets that timed out during listener filter processing |
| downstream_pre_cx_active | Gauge | Sockets currently undergoing listener filter processing |
| no_filter_chain_match | Counter | Total connections that didn’t match any filter chain |
| ssl.connection_error | Counter | Total TLS connection errors not including failed certificate verifications |
| ssl.handshake | Counter | Total successful TLS connection handshakes |
| ssl.session_reused | Counter | Total successful TLS session resumptions |
| ssl.no_certificate | Counter | Total successful TLS connections with no client certificate |
| ssl.fail_verify_no_cert | Counter | Total TLS connections that failed because of missing client certificate |
| ssl.fail_verify_error | Counter | Total TLS connections that failed CA verification |
| ssl.fail_verify_san | Counter | Total TLS connections that failed SAN verification |
| ssl.fail_verify_cert_hash | Counter | Total TLS connections that failed certificate pinning verification |
| ssl.ciphers.<cipher> | Counter | Total successful TLS connections that used cipher <cipher> |
| ssl.curves.<curve> | Counter | Total successful TLS connections that used ECDHE curve <curve> |
| ssl.sigalgs.<sigalg> | Counter | Total successful TLS connections that used signature algorithm <sigalg> |
| ssl.versions.<version> | Counter | Total successful TLS connections that used protocol version <version> |
Listener manager
The listener manager has a statistics tree rooted at listener_manager. with the following statistics. Any : character in the stats name is replaced with _.
| Name | Type | Description |
|---|---|---|
| listener_added | Counter | Total listeners added (either via static config or LDS) |
| listener_modified | Counter | Total listeners modified (via LDS) |
| listener_removed | Counter | Total listeners removed (via LDS) |
| listener_create_success | Counter | Total listener objects successfully added to workers |
| listener_create_failure | Counter | Total failed listener object additions to workers |
| total_listeners_warming | Gauge | Number of currently warming listeners |
| total_listeners_active | Gauge | Number of currently active listeners |
| total_listeners_draining | Gauge | Number of currently draining listeners |
