Server Metrics
Server metrics describe listener, task, and request activity on the keyless server.
The following tags are present on all server metrics:
server
Server name.
online
Whether the server is online. The value is either
yorn.
Listen
No extra tags.
The metric names are:
listen.instance.count
type: gauge
Number of listening sockets.
listen.accepted
type: count
Number of accepted client connections.
listen.dropped
type: count
Number of client connections dropped early by ACL rules.
listen.timeout
type: count
Number of client connections that timed out during early protocol negotiation, such as TLS setup.
listen.failed
type: count
Number of accept errors.
Task
A task is a keyless client connection.
No additional fixed tags are present. Extra tags configured on the server are added.
The metrics names are:
server.task.total
type: count
Number of valid tasks spawned. Each accepted client connection is promoted to a task.
server.task.alive
type: gauge
Number of live tasks currently running for this server. During normal systemd shutdown, servers with running tasks enter offline mode and wait for those tasks to finish.
Request
Extra tags configured on the server are added.
The following extra tags are used by request metrics:
request
Keyless request type. Present on all request metrics.
The values are:
no_op
ping_pong
rsa_decrypt
rsa_sign
rsa_pss_sign
ecdsa_sign
ed25519_sign
reason
Failure reason for unsuccessful keyless requests.
The values are:
key_not_found
crypto_fail
bad_op_code
format_error
other_fail
The metric names are:
server.request.total
type: count
Total number of new requests.
server.request.alive
type: gauge
Number of keyless requests currently being processed.
server.request.passed
type: count
Number of successful keyless requests.
server.request.failed
type: count
Number of failed keyless requests. The
reasontag is added.server.request.duration
type: gauge
Histogram statistics for keyless request processing duration, corresponding to process_time in request logs.