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Changes according to the approved KEP. SCTP is supported for HostPort and LoadBalancer. Alpha feature flag SCTPSupport controls the support of SCTP. Kube-proxy config parameter is removed.

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This commit is contained in:
Laszlo Janosi
2018-08-25 20:26:25 +00:00
parent a6da2b1472
commit e466bdc67e
25 changed files with 104 additions and 114 deletions
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24
pkg/proxy/ipvs/proxier.go
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@@ -29,7 +29,6 @@ import (
"time"
"github.com/golang/glog"
"github.com/ishidawataru/sctp"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
@@ -234,7 +233,6 @@ type Proxier struct {
// networkInterfacer defines an interface for several net library functions.
// Inject for test purpose.
networkInterfacer utilproxy.NetworkInterfacer
sctpUserSpaceNode bool
}
// IPGetter helps get node network interface IP
@@ -300,7 +298,6 @@ func NewProxier(ipt utiliptables.Interface,
healthzServer healthcheck.HealthzUpdater,
scheduler string,
nodePortAddresses []string,
sctpUserSpaceNode bool,
) (*Proxier, error) {
// Set the route_localnet sysctl we need for
if err := sysctl.SetSysctl(sysctlRouteLocalnet, 1); err != nil {
@@ -382,7 +379,6 @@ func NewProxier(ipt utiliptables.Interface,
ipset: ipset,
nodePortAddresses: nodePortAddresses,
networkInterfacer: utilproxy.RealNetwork{},
sctpUserSpaceNode: sctpUserSpaceNode,
}
// initialize ipsetList with all sets we needed
proxier.ipsetList = make(map[string]*IPSet)
@@ -815,7 +811,9 @@ func (proxier *Proxier) syncProxyRules() {
for _, externalIP := range svcInfo.ExternalIPs {
if local, err := utilproxy.IsLocalIP(externalIP); err != nil {
glog.Errorf("can't determine if IP is local, assuming not: %v", err)
} else if local && (svcInfo.GetProtocol() != api.ProtocolSCTP || !proxier.sctpUserSpaceNode) {
// We do not start listening on SCTP ports, according to our agreement in the
// SCTP support KEP
} else if local && (svcInfo.GetProtocol() != v1.ProtocolSCTP) {
lp := utilproxy.LocalPort{
Description: "externalIP for " + svcNameString,
IP: externalIP,
@@ -1014,7 +1012,9 @@ func (proxier *Proxier) syncProxyRules() {
if proxier.portsMap[lp] != nil {
glog.V(4).Infof("Port %s was open before and is still needed", lp.String())
replacementPortsMap[lp] = proxier.portsMap[lp]
} else if svcInfo.GetProtocol() != api.ProtocolSCTP || !proxier.sctpUserSpaceNode {
// We do not start listening on SCTP ports, according to our agreement in the
// SCTP support KEP
} else if svcInfo.GetProtocol() != v1.ProtocolSCTP {
socket, err := proxier.portMapper.OpenLocalPort(&lp)
if err != nil {
glog.Errorf("can't open %s, skipping this nodePort: %v", lp.String(), err)
@@ -1650,18 +1650,6 @@ func openLocalPort(lp *utilproxy.LocalPort) (utilproxy.Closeable, error) {
return nil, err
}
socket = conn
case "sctp":
// SCTP is not supported by golang/net, or any other built-in lib,
// so we have to manage SCTP via a 3rd party lib.
sctpAddr, err := sctp.ResolveSCTPAddr("sctp", net.JoinHostPort(lp.IP, strconv.Itoa(lp.Port)))
if err != nil {
return nil, err
}
conn, err := sctp.ListenSCTP("sctp", sctpAddr)
if err != nil {
return nil, err
}
socket = conn
default:
return nil, fmt.Errorf("unknown protocol %q", lp.Protocol)
}