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Add TCPTimeouts to netstat default filter (#2189) 

TCP timeouts count is a useful signal to show
abnormal network performance and is another
signal to aid debugging. This metric can be
used to generate proactive alerts for host
network namespace workloads.

Signed-off-by: Martin Kennelly <mkennell@redhat.com>
This commit is contained in:
Martin Kennelly 2021-11-18 08:34:55 +00:00 committed by GitHub
parent f5ae31a84c
commit 4065902fe5
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3 changed files with 5 additions and 1 deletions
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1
CHANGELOG.md
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@ -5,6 +5,7 @@
* [ENHANCEMENT]
* [BUGFIX]
[CHANGE] Add TCPTimeouts to netstat default filter #2189
* [ENHANCEMENT] Add flag to disable guest CPU metrics #2123
* [ENHANCEMENT] Add DMI collector #303
* [BUGFIX] Fix possible panic on macOS #2133

3
collector/fixtures/e2e-output.txt
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@ -2240,6 +2240,9 @@ node_netstat_TcpExt_SyncookiesRecv 0
# HELP node_netstat_TcpExt_SyncookiesSent Statistic TcpExtSyncookiesSent.
# TYPE node_netstat_TcpExt_SyncookiesSent untyped
node_netstat_TcpExt_SyncookiesSent 0
# HELP node_netstat_TcpExt_TCPTimeouts Statistic TcpExtTCPTimeouts.
# TYPE node_netstat_TcpExt_TCPTimeouts untyped
node_netstat_TcpExt_TCPTimeouts 115
# HELP node_netstat_Tcp_ActiveOpens Statistic TcpActiveOpens.
# TYPE node_netstat_Tcp_ActiveOpens untyped
node_netstat_Tcp_ActiveOpens 3556

2
collector/netstat_linux.go
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@ -36,7 +36,7 @@ const (
)
var (
netStatFields = kingpin.Flag("collector.netstat.fields", "Regexp of fields to return for netstat collector.").Default("^(.*_(InErrors|InErrs)|Ip_Forwarding|Ip(6|Ext)_(InOctets|OutOctets)|Icmp6?_(InMsgs|OutMsgs)|TcpExt_(Listen.*|Syncookies.*|TCPSynRetrans)|Tcp_(ActiveOpens|InSegs|OutSegs|OutRsts|PassiveOpens|RetransSegs|CurrEstab)|Udp6?_(InDatagrams|OutDatagrams|NoPorts|RcvbufErrors|SndbufErrors))$").String()
netStatFields = kingpin.Flag("collector.netstat.fields", "Regexp of fields to return for netstat collector.").Default("^(.*_(InErrors|InErrs)|Ip_Forwarding|Ip(6|Ext)_(InOctets|OutOctets)|Icmp6?_(InMsgs|OutMsgs)|TcpExt_(Listen.*|Syncookies.*|TCPSynRetrans|TCPTimeouts)|Tcp_(ActiveOpens|InSegs|OutSegs|OutRsts|PassiveOpens|RetransSegs|CurrEstab)|Udp6?_(InDatagrams|OutDatagrams|NoPorts|RcvbufErrors|SndbufErrors))$").String()
)
type netStatCollector struct {