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Updating kube-proxy to trim space from loadBalancerSourceRanges

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Before this fix, a Service with a loadBalancerSourceRange value that
included a space would cause kube-proxy to crashloop. This updates
kube-proxy to trim any space from that field.
This commit is contained in:
Rob Scott
2020-08-19 12:30:49 -07:00
parent 544b74c2cb
commit c382c79f60
4 changed files with 60 additions and 23 deletions
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10
pkg/proxy/service.go
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@@ -146,10 +146,14 @@ func (sct *ServiceChangeTracker) newBaseServiceInfo(port *v1.ServicePort, servic
topologyKeys: service.Spec.TopologyKeys,
}
loadBalancerSourceRanges := make([]string, len(service.Spec.LoadBalancerSourceRanges))
for i, sourceRange := range service.Spec.LoadBalancerSourceRanges {
loadBalancerSourceRanges[i] = strings.TrimSpace(sourceRange)
}
if sct.isIPv6Mode == nil {
info.externalIPs = make([]string, len(service.Spec.ExternalIPs))
info.loadBalancerSourceRanges = make([]string, len(service.Spec.LoadBalancerSourceRanges))
copy(info.loadBalancerSourceRanges, service.Spec.LoadBalancerSourceRanges)
info.loadBalancerSourceRanges = loadBalancerSourceRanges
copy(info.externalIPs, service.Spec.ExternalIPs)
// Deep-copy in case the service instance changes
info.loadBalancerStatus = *service.Status.LoadBalancer.DeepCopy()
@@ -162,7 +166,7 @@ func (sct *ServiceChangeTracker) newBaseServiceInfo(port *v1.ServicePort, servic
if len(incorrectIPs) > 0 {
utilproxy.LogAndEmitIncorrectIPVersionEvent(sct.recorder, "externalIPs", strings.Join(incorrectIPs, ","), service.Namespace, service.Name, service.UID)
}
info.loadBalancerSourceRanges, incorrectIPs = utilproxy.FilterIncorrectCIDRVersion(service.Spec.LoadBalancerSourceRanges, *sct.isIPv6Mode)
info.loadBalancerSourceRanges, incorrectIPs = utilproxy.FilterIncorrectCIDRVersion(loadBalancerSourceRanges, *sct.isIPv6Mode)
if len(incorrectIPs) > 0 {
utilproxy.LogAndEmitIncorrectIPVersionEvent(sct.recorder, "loadBalancerSourceRanges", strings.Join(incorrectIPs, ","), service.Namespace, service.Name, service.UID)
}