70 lines
2 KiB
Go
70 lines
2 KiB
Go
package server
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import (
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"fmt"
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"net"
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"github.com/kubernetes-incubator/cri-o/lib/sandbox"
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"github.com/sirupsen/logrus"
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"k8s.io/kubernetes/pkg/kubelet/network/hostport"
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)
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// networkStart sets up the sandbox's network and returns the pod IP on success
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// or an error
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func (s *Server) networkStart(hostNetwork bool, sb *sandbox.Sandbox) (string, error) {
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if hostNetwork {
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return s.BindAddress(), nil
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}
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podNetwork := newPodNetwork(sb)
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err := s.netPlugin.SetUpPod(podNetwork)
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if err != nil {
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return "", fmt.Errorf("failed to create pod network sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
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}
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var ip string
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if ip, err = s.netPlugin.GetPodNetworkStatus(podNetwork); err != nil {
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return "", fmt.Errorf("failed to get network status for pod sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
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}
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if len(sb.PortMappings()) > 0 {
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ip4 := net.ParseIP(ip).To4()
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if ip4 == nil {
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return "", fmt.Errorf("failed to get valid ipv4 address for sandbox %s(%s)", sb.Name(), sb.ID())
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}
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if err = s.hostportManager.Add(sb.ID(), &hostport.PodPortMapping{
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Name: sb.Name(),
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PortMappings: sb.PortMappings(),
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IP: ip4,
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HostNetwork: false,
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}, "lo"); err != nil {
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return "", fmt.Errorf("failed to add hostport mapping for sandbox %s(%s): %v", sb.Name(), sb.ID(), err)
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}
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}
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return ip, nil
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}
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// networkStop cleans up and removes a pod's network. It is best-effort and
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// must call the network plugin even if the network namespace is already gone
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func (s *Server) networkStop(hostNetwork bool, sb *sandbox.Sandbox) error {
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if !hostNetwork {
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if err := s.hostportManager.Remove(sb.ID(), &hostport.PodPortMapping{
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Name: sb.Name(),
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PortMappings: sb.PortMappings(),
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HostNetwork: false,
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}); err != nil {
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logrus.Warnf("failed to remove hostport for pod sandbox %s(%s): %v",
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sb.Name(), sb.ID(), err)
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}
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podNetwork := newPodNetwork(sb)
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if err := s.netPlugin.TearDownPod(podNetwork); err != nil {
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logrus.Warnf("failed to destroy network for pod sandbox %s(%s): %v",
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sb.Name(), sb.ID(), err)
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}
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}
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return nil
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}
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