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cmdmon: add interleaved stats to serverstats

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Report the number of received interleaved requests and current timestamp
count with their span.

Expand the serverstats description in chronyc man page.
This commit is contained in:
Miroslav Lichvar
2021-10-20 16:10:21 +02:00
parent 2f05287e15
commit 1fb60f8db8
9 changed files with 83 additions and 14 deletions
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50
doc/chronyc.adoc
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@@ -1107,13 +1107,9 @@ The columns are as follows:
received/accepted.
[[serverstats]]*serverstats*::
The *serverstats* command displays how many valid NTP and command requests, and
NTS-KE connections, *chronyd* operating as a server received from clients, and
how many of them were dropped due to rate limiting. It also displays how many
client log records were dropped due to the memory limit configured by the
<<chrony.conf.adoc#clientloglimit,*clientloglimit*>> directive and how many of
the NTP requests (from those which were not dropped) were authenticated. An
example of the output is shown below.
The *serverstats* command displays NTP and command server statistics.
+
An example of the output is shown below.
+
----
NTP packets received : 1598
@@ -1124,7 +1120,47 @@ Client log records dropped : 0
NTS-KE connections accepted: 3
NTS-KE connections dropped : 0
Authenticated NTP packets : 189
Interleaved NTP packets : 43
NTP timestamps held : 44
NTP timestamp span : 120
----
+
The fields have the following meaning:
+
*NTP packets received*:::
The number of valid NTP requests received by the server.
*NTP packets dropped*:::
The number of NTP requests dropped by the server due to rate limiting
(configured by the <<chrony.conf.adoc#ratelimit,*ratelimit*>> directive).
*Command packets received*:::
The number of command requests received by the server.
*Command packets dropped*:::
The number of command requests dropped by the server due to rate limiting
(configured by the <<chrony.conf.adoc#cmdratelimit,*cmdratelimit*>> directive).
*Client log records dropped*:::
The number of client log records dropped by the server to limit the memory use
(configured by the <<chrony.conf.adoc#clientloglimit,*clientloglimit*>>
directive).
*NTS-KE connections accepted*:::
The number of NTS-KE connections accepted by the server.
*NTS-KE connections dropped*:::
The number of NTS-KE connections dropped by the server due to rate limiting
(configured by the <<chrony.conf.adoc#ntsratelimit,*ntsratelimit*>> directive).
*Authenticated NTP packets*:::
The number of received NTP requests that were authenticated (with a symmetric
key or NTS).
*Interleaved NTP packets*:::
The number of received NTP requests that were detected to be in the interleaved
mode.
*NTP timestamps held*:::
The number of pairs of receive and transmit timestamps that the server is
currently holding in memory for clients using the interleaved mode.
*NTP timestamp span*:::
The interval (in seconds) covered by the currently held NTP timestamps.
{blank}::
+
Note that the numbers reported by this overflow to zero after 4294967295
(32-bit values).
[[allow]]*allow* [*all*] [_subnet_]::
The effect of the allow command is identical to the