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Merge pull request #133695 from prezha/kube-proxy-iptables-startup-errors

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Fix kube-proxy iptables startup: log but don't exit if ipv4 or ipv6 is not available
This commit is contained in:
Kubernetes Prow Robot
2025-08-26 09:22:10 -07:00
committed by GitHub
parent 091f87c10b f2170bc6c3
commit 28c8381aa5
1 changed files with 4 additions and 5 deletions
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9
cmd/kube-proxy/app/server_linux.go
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@@ -90,18 +90,17 @@ func (s *ProxyServer) platformCheckSupported(ctx context.Context) (ipv4Supported
if isIPTablesBased(s.Config.Mode) {
// Check for the iptables and ip6tables binaries.
var ipts map[v1.IPFamily]utiliptables.Interface
ipts, err = utiliptables.NewDualStack()
ipts, errDS := utiliptables.NewDualStack()
ipv4Supported = ipts[v1.IPv4Protocol] != nil
ipv6Supported = ipts[v1.IPv6Protocol] != nil
if !ipv4Supported && !ipv6Supported {
err = fmt.Errorf("iptables is not available on this host : %w", err)
err = fmt.Errorf("iptables is not available on this host : %w", errDS)
} else if !ipv4Supported {
logger.Info("No iptables support for family", "ipFamily", v1.IPv4Protocol, "error", err)
logger.Info("No iptables support for family", "ipFamily", v1.IPv4Protocol, "error", errDS)
} else if !ipv6Supported {
logger.Info("No iptables support for family", "ipFamily", v1.IPv6Protocol, "error", err)
logger.Info("No iptables support for family", "ipFamily", v1.IPv6Protocol, "error", errDS)
}
} else {
// The nft CLI always supports both families.