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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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9
pkg/proxy/iptables/proxier.go
View File

@@ -108,6 +108,7 @@ func newServiceInfo(service proxy.ServicePortName) *serviceInfo {
type Proxier struct {
mu sync.Mutex // protects serviceMap
serviceMap map[proxy.ServicePortName]*serviceInfo
syncPeriod time.Duration
iptables utiliptables.Interface
haveReceivedServiceUpdate bool // true once we've seen an OnServiceUpdate event
haveReceivedEndpointsUpdate bool // true once we've seen an OnEndpointsUpdate event
@@ -121,12 +122,13 @@ var _ proxy.ProxyProvider = &Proxier{}
// An error will be returned 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(ipt utiliptables.Interface) (*Proxier, error) {
func NewProxier(ipt utiliptables.Interface, syncPeriod time.Duration) (*Proxier, error) {
glog.V(2).Info("Tearing down userspace rules. Errors here are acceptable.")
// remove iptables rules/chains from the userspace Proxier
tearDownUserspaceIptables(ipt)
return &Proxier{
serviceMap: make(map[proxy.ServicePortName]*serviceInfo),
syncPeriod: syncPeriod,
iptables: ipt,
}, nil
}
@@ -205,12 +207,9 @@ func ipsEqual(lhs, rhs []string) bool {
return true
}
// How often we sync iptables
const syncIntervalIptables = 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(syncIntervalIptables)
t := time.NewTicker(proxier.syncPeriod)
defer t.Stop()
for {
<-t.C

13
pkg/proxy/userspace/proxier.go
View File

@@ -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

28
pkg/proxy/userspace/proxier_test.go
View File

@@ -223,7 +223,7 @@ func TestTCPProxy(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -250,7 +250,7 @@ func TestUDPProxy(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -282,7 +282,7 @@ func TestMultiPortProxy(t *testing.T) {
}},
}})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -309,7 +309,7 @@ func TestMultiPortOnServiceUpdate(t *testing.T) {
serviceQ := proxy.ServicePortName{NamespacedName: types.NamespacedName{Namespace: "testnamespace", Name: "echo"}, Port: "q"}
serviceX := proxy.ServicePortName{NamespacedName: types.NamespacedName{Namespace: "testnamespace", Name: "echo"}, Port: "x"}
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -372,7 +372,7 @@ func TestTCPProxyStop(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -410,7 +410,7 @@ func TestUDPProxyStop(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -448,7 +448,7 @@ func TestTCPProxyUpdateDelete(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -485,7 +485,7 @@ func TestUDPProxyUpdateDelete(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -522,7 +522,7 @@ func TestTCPProxyUpdateDeleteUpdate(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -574,7 +574,7 @@ func TestUDPProxyUpdateDeleteUpdate(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -626,7 +626,7 @@ func TestTCPProxyUpdatePort(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -674,7 +674,7 @@ func TestUDPProxyUpdatePort(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -719,7 +719,7 @@ func TestProxyUpdatePublicIPs(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}
@@ -771,7 +771,7 @@ func TestProxyUpdatePortal(t *testing.T) {
},
})
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil)
p, err := createProxier(lb, net.ParseIP("0.0.0.0"), &fakeIptables{}, net.ParseIP("127.0.0.1"), nil, time.Minute)
if err != nil {
t.Fatal(err)
}