github/kubernetes
1
0
Fork 0
mirror of https://github.com/k3s-io/kubernetes.git synced 2025-07-19 18:02:01 +00:00
Code Issues Projects Releases Wiki Activity

Merge pull request #94915 from Lion-Wei/fix-cleanup

Browse Source 
fix kube-proxy cleanup
This commit is contained in:
Kubernetes Prow Robot 2020-09-30 06:21:24 -07:00 committed by GitHub
commit aa1f912868
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 34 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
cmd/kube-proxy/app/server.go
View File

@ -801,11 +801,20 @@ func getConntrackMax(config kubeproxyconfig.KubeProxyConntrackConfiguration) (in
return 0, nil
}
// CleanupAndExit remove iptables rules and exit if success return nil
// CleanupAndExit remove iptables rules and ipset/ipvs rules in ipvs proxy mode
// and exit if success return nil
func (s *ProxyServer) CleanupAndExit() error {
encounteredError := userspace.CleanupLeftovers(s.IptInterface)
encounteredError = iptables.CleanupLeftovers(s.IptInterface) || encounteredError
encounteredError = ipvs.CleanupLeftovers(s.IpvsInterface, s.IptInterface, s.IpsetInterface, s.CleanupIPVS) || encounteredError
// cleanup IPv6 and IPv4 iptables rules
ipts := []utiliptables.Interface{
utiliptables.New(s.execer, utiliptables.ProtocolIPv4),
utiliptables.New(s.execer, utiliptables.ProtocolIPv6),
}
var encounteredError bool
for _, ipt := range ipts {
encounteredError = userspace.CleanupLeftovers(ipt) || encounteredError
encounteredError = iptables.CleanupLeftovers(ipt) || encounteredError
encounteredError = ipvs.CleanupLeftovers(s.IpvsInterface, ipt, s.IpsetInterface, s.CleanupIPVS) || encounteredError
}
if encounteredError {
return errors.New("encountered an error while tearing down rules")
}

43
cmd/kube-proxy/app/server_others.go
View File

@ -91,26 +91,6 @@ func newProxyServer(
return nil, fmt.Errorf("unable to register configz: %s", err)
}
hostname, err := utilnode.GetHostname(config.HostnameOverride)
if err != nil {
return nil, err
}
client, eventClient, err := createClients(config.ClientConnection, master)
if err != nil {
return nil, err
}
nodeIP := detectNodeIP(client, hostname, config.BindAddress)
protocol := utiliptables.ProtocolIPv4
if utilsnet.IsIPv6(nodeIP) {
klog.V(0).Infof("kube-proxy node IP is an IPv6 address (%s), assume IPv6 operation", nodeIP.String())
protocol = utiliptables.ProtocolIPv6
} else {
klog.V(0).Infof("kube-proxy node IP is an IPv4 address (%s), assume IPv4 operation", nodeIP.String())
}
var iptInterface utiliptables.Interface
var ipvsInterface utilipvs.Interface
var kernelHandler ipvs.KernelHandler
@ -119,7 +99,6 @@ func newProxyServer(
// Create a iptables utils.
execer := exec.New()
iptInterface = utiliptables.New(execer, protocol)
kernelHandler = ipvs.NewLinuxKernelHandler()
ipsetInterface = utilipset.New(execer)
canUseIPVS, err := ipvs.CanUseIPVSProxier(kernelHandler, ipsetInterface)
@ -135,7 +114,6 @@ func newProxyServer(
if cleanupAndExit {
return &ProxyServer{
execer: execer,
IptInterface: iptInterface,
IpvsInterface: ipvsInterface,
IpsetInterface: ipsetInterface,
}, nil
@ -145,6 +123,27 @@ func newProxyServer(
metrics.SetShowHidden()
}
hostname, err := utilnode.GetHostname(config.HostnameOverride)
if err != nil {
return nil, err
}
client, eventClient, err := createClients(config.ClientConnection, master)
if err != nil {
return nil, err
}
nodeIP := detectNodeIP(client, hostname, config.BindAddress)
protocol := utiliptables.ProtocolIPv4
if utilsnet.IsIPv6(nodeIP) {
klog.V(0).Infof("kube-proxy node IP is an IPv6 address (%s), assume IPv6 operation", nodeIP.String())
protocol = utiliptables.ProtocolIPv6
} else {
klog.V(0).Infof("kube-proxy node IP is an IPv4 address (%s), assume IPv4 operation", nodeIP.String())
}
iptInterface = utiliptables.New(execer, protocol)
// Create event recorder
eventBroadcaster := record.NewBroadcaster()
recorder := eventBroadcaster.NewRecorder(proxyconfigscheme.Scheme, v1.EventSource{Component: "kube-proxy", Host: hostname})