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Retrieve network inspect info from dependency container

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When a container either joins a pod that shares the network
namespace or uses `--net=container:` to share the network
namespace of another container, it does not have its own copy of
the CNI results used to generate `podman inspect` output. As
such, to inspect these containers, we should be going to the
container we share the namespace with for network info.

Fixes #8073

Signed-off-by: Matthew Heon <mheon@redhat.com>
This commit is contained in:
Matthew Heon
2020-10-20 12:01:53 -04:00
parent 36682115b0
commit c1b844ecc8
2 changed files with 32 additions and 0 deletions
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14
libpod/networking_linux.go
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@ -823,6 +823,20 @@ func getContainerNetIO(ctr *Container) (*netlink.LinkStatistics, error) {
// Produce an InspectNetworkSettings containing information on the container
// network.
func (c *Container) getContainerNetworkInfo() (*define.InspectNetworkSettings, error) {
if c.config.NetNsCtr != "" {
netNsCtr, err := c.runtime.GetContainer(c.config.NetNsCtr)
if err != nil {
return nil, err
}
// Have to sync to ensure that state is populated
if err := netNsCtr.syncContainer(); err != nil {
return nil, err
}
logrus.Debugf("Container %s shares network namespace, retrieving network info of container %s", c.ID(), c.config.NetNsCtr)
return netNsCtr.getContainerNetworkInfo()
}
settings := new(define.InspectNetworkSettings)
settings.Ports = makeInspectPortBindings(c.config.PortMappings)