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Make kube-proxy iptables sync period configurable

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This commit is contained in:
Tim Hockin
2015-08-12 17:33:05 -07:00
parent c367d3c2e5
commit 776132e1ae
5 changed files with 31 additions and 30 deletions
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13
pkg/proxy/userspace/proxier.go
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@@ -69,6 +69,7 @@ type Proxier struct {
loadBalancer LoadBalancer
mu sync.Mutex // protects serviceMap
serviceMap map[proxy.ServicePortName]*serviceInfo
syncPeriod time.Duration
portMapMutex sync.Mutex
portMap map[portMapKey]proxy.ServicePortName
numProxyLoops int32 // use atomic ops to access this; mostly for testing
@@ -110,7 +111,7 @@ func IsProxyLocked(err error) bool {
// if iptables fails to update or acquire the initial lock. Once a proxier is
// created, it will keep iptables up to date in the background and will not
// terminate if a particular iptables call fails.
func NewProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables.Interface, pr util.PortRange) (*Proxier, error) {
func NewProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables.Interface, pr util.PortRange, syncPeriod time.Duration) (*Proxier, error) {
if listenIP.Equal(localhostIPv4) || listenIP.Equal(localhostIPv6) {
return nil, ErrProxyOnLocalhost
}
@@ -123,10 +124,10 @@ func NewProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables.In
proxyPorts := newPortAllocator(pr)
glog.V(2).Infof("Setting proxy IP to %v and initializing iptables", hostIP)
return createProxier(loadBalancer, listenIP, iptables, hostIP, proxyPorts)
return createProxier(loadBalancer, listenIP, iptables, hostIP, proxyPorts, syncPeriod)
}
func createProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables.Interface, hostIP net.IP, proxyPorts PortAllocator) (*Proxier, error) {
func createProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables.Interface, hostIP net.IP, proxyPorts PortAllocator, syncPeriod time.Duration) (*Proxier, error) {
// convenient to pass nil for tests..
if proxyPorts == nil {
proxyPorts = newPortAllocator(util.PortRange{})
@@ -146,6 +147,7 @@ func createProxier(loadBalancer LoadBalancer, listenIP net.IP, iptables iptables
loadBalancer: loadBalancer,
serviceMap: make(map[proxy.ServicePortName]*serviceInfo),
portMap: make(map[portMapKey]proxy.ServicePortName),
syncPeriod: syncPeriod,
listenIP: listenIP,
iptables: iptables,
hostIP: hostIP,
@@ -166,12 +168,9 @@ func tearDownIptablesProxierRules(ipt iptables.Interface) {
}
}
// The periodic interval for checking the state of things.
const syncInterval = 5 * time.Second
// SyncLoop runs periodic work. This is expected to run as a goroutine or as the main loop of the app. It does not return.
func (proxier *Proxier) SyncLoop() {
t := time.NewTicker(syncInterval)
t := time.NewTicker(proxier.syncPeriod)
defer t.Stop()
for {
<-t.C