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kube-proxy iptables expose number of rules metrics

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add a new metric to kube-proxy iptables, so it exposes the number
of rules programmed in each iteration.
This commit is contained in:
Antonio Ojea
2021-03-02 18:35:32 +01:00
parent f79795d718
commit 654be57022
5 changed files with 203 additions and 0 deletions
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5
pkg/proxy/iptables/proxier.go
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@@ -1604,6 +1604,11 @@ func (proxier *Proxier) syncProxyRules() {
proxier.iptablesData.Write(proxier.natChains.Bytes())
proxier.iptablesData.Write(proxier.natRules.Bytes())
numberFilterIptablesRules := utilproxy.CountBytesLines(proxier.filterRules.Bytes())
metrics.IptablesRulesTotal.WithLabelValues(string(utiliptables.TableFilter)).Set(float64(numberFilterIptablesRules))
numberNatIptablesRules := utilproxy.CountBytesLines(proxier.natRules.Bytes())
metrics.IptablesRulesTotal.WithLabelValues(string(utiliptables.TableNAT)).Set(float64(numberNatIptablesRules))
klog.V(5).InfoS("Restoring iptables", "rules", proxier.iptablesData.Bytes())
err = proxier.iptables.RestoreAll(proxier.iptablesData.Bytes(), utiliptables.NoFlushTables, utiliptables.RestoreCounters)
if err != nil {