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kube-proxy iptables min-sync-period default 1sec

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Currently kube-proxy defaults the min-sync-period for
iptables to 0. However, as explained by Dan Winship,

"With minSyncPeriod: 0, you run iptables-restore 100 times.
 With minSyncPeriod: 1s , you run iptables-restore once.
 With minSyncPeriod: 10s , you also run iptables-restore once,
 but you might have to wait 10 seconds first"
This commit is contained in:
Antonio Ojea 2020-07-06 19:48:28 +02:00
parent 9fb34edded
commit f8e64d31f9
3 changed files with 5 additions and 2 deletions
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2
pkg/proxy/apis/config/scheme/testdata/KubeProxyConfiguration/after/v1alpha1.yaml vendored
View File

@ -21,7 +21,7 @@ hostnameOverride: ""
iptables:
masqueradeAll: false
masqueradeBit: 14
minSyncPeriod: 0s
minSyncPeriod: 1s
syncPeriod: 30s
ipvs:
excludeCIDRs: null

2
pkg/proxy/apis/config/scheme/testdata/KubeProxyConfiguration/roundtrip/default/v1alpha1.yaml vendored
View File

@ -21,7 +21,7 @@ hostnameOverride: ""
iptables:
masqueradeAll: false
masqueradeBit: 14
minSyncPeriod: 0s
minSyncPeriod: 1s
syncPeriod: 30s
ipvs:
excludeCIDRs: null

3
pkg/proxy/apis/config/v1alpha1/defaults.go
View File

@ -61,6 +61,9 @@ func SetDefaults_KubeProxyConfiguration(obj *kubeproxyconfigv1alpha1.KubeProxyCo
if obj.IPTables.SyncPeriod.Duration == 0 {
obj.IPTables.SyncPeriod = metav1.Duration{Duration: 30 * time.Second}
}
if obj.IPTables.MinSyncPeriod.Duration == 0 {
obj.IPTables.MinSyncPeriod = metav1.Duration{Duration: 1 * time.Second}
}
if obj.IPVS.SyncPeriod.Duration == 0 {
obj.IPVS.SyncPeriod = metav1.Duration{Duration: 30 * time.Second}
}