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Merge pull request #77802 from DataDog/lbernail/no-graceful-udp 

[proxier/ipvs] Disable graceful termination for UDP traffic
k3s-v1.15.3
Kubernetes Prow Robot 2019-05-28 22:20:35 -07:00 committed by GitHub
parent 358bfe3808 9ff0685722
commit 944a7e2be6
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1 changed files with 5 additions and 5 deletions
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10
pkg/proxy/ipvs/graceful_termination.go
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@ -17,10 +17,10 @@ limitations under the License.
package ipvs
import (
"fmt"
"sync"
"time"
"fmt"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/klog"
utilipvs "k8s.io/kubernetes/pkg/util/ipvs"
@ -164,10 +164,10 @@ func (m *GracefulTerminationManager) deleteRsFunc(rsToDelete *listItem) (bool, e
}
for _, rs := range rss {
if rsToDelete.RealServer.Equal(rs) {
// Delete RS with no connections
// For UDP, ActiveConn is always 0
// For TCP, InactiveConn are connections not in ESTABLISHED state
if rs.ActiveConn+rs.InactiveConn != 0 {
// For UDP traffic, no graceful termination, we immediately delete the RS
// (existing connections will be deleted on the next packet because sysctlExpireNoDestConn=1)
// For other protocols, don't delete until all connections have expired)
if rsToDelete.VirtualServer.Protocol != "udp" && rs.ActiveConn+rs.InactiveConn != 0 {
klog.Infof("Not deleting, RS %v: %v ActiveConn, %v InactiveConn", rsToDelete.String(), rs.ActiveConn, rs.InactiveConn)
return false, nil
}