From 611b45c517bbbbfc0d41b028ace3e8ee905e39bf Mon Sep 17 00:00:00 2001
From: 😎 Mostafa Emami <mustafaemami@gmail.com>
Date: Sun, 27 Feb 2022 08:45:45 +0100
Subject: Inspect network info of a joined network namespace
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Closes: https://github.com/containers/podman/issues/13150
Signed-off-by: 😎 Mostafa Emami <mustafaemami@gmail.com>
---
test/e2e/run_networking_test.go | 155 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 155 insertions(+)
(limited to 'test/e2e')
diff --git a/test/e2e/run_networking_test.go b/test/e2e/run_networking_test.go
index aa1887f84..2202cadd8 100644
--- a/test/e2e/run_networking_test.go
+++ b/test/e2e/run_networking_test.go
@@ -2,15 +2,19 @@ package integration
import (
"fmt"
+ "net"
"os"
"strings"
+ "syscall"
+ "github.com/containernetworking/plugins/pkg/ns"
. "github.com/containers/podman/v4/test/utils"
"github.com/containers/storage/pkg/stringid"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/gexec"
"github.com/uber/jaeger-client-go/utils"
+ "github.com/vishvananda/netlink"
)
var _ = Describe("Podman run networking", func() {
@@ -694,6 +698,157 @@ EXPOSE 2004-2005/tcp`, ALPINE)
Expect(session.OutputToString()).To(ContainSubstring("11.11.11.11"))
})
+ addAddr := func(cidr string, containerInterface netlink.Link) error {
+ _, ipnet, err := net.ParseCIDR(cidr)
+ Expect(err).To(BeNil())
+ addr := &netlink.Addr{IPNet: ipnet, Label: ""}
+ if err := netlink.AddrAdd(containerInterface, addr); err != nil && err != syscall.EEXIST {
+ return err
+ }
+ return nil
+ }
+
+ loopbackup := func() {
+ lo, err := netlink.LinkByName("lo")
+ Expect(err).To(BeNil())
+ err = netlink.LinkSetUp(lo)
+ Expect(err).To(BeNil())
+ }
+
+ linkup := func(name string, mac string, addresses []string) {
+ linkAttr := netlink.NewLinkAttrs()
+ linkAttr.Name = name
+ m, err := net.ParseMAC(mac)
+ Expect(err).To(BeNil())
+ linkAttr.HardwareAddr = net.HardwareAddr(m)
+ eth := &netlink.Dummy{LinkAttrs: linkAttr}
+ err = netlink.LinkAdd(eth)
+ Expect(err).To(BeNil())
+ err = netlink.LinkSetUp(eth)
+ Expect(err).To(BeNil())
+ for _, address := range addresses {
+ err := addAddr(address, eth)
+ Expect(err).To(BeNil())
+ }
+ }
+
+ routeAdd := func(gateway string) {
+ gw := net.ParseIP(gateway)
+ route := &netlink.Route{Dst: nil, Gw: gw}
+ netlink.RouteAdd(route)
+ }
+
+ setupNetworkNs := func(networkNSName string) {
+ ns.WithNetNSPath("/run/netns/"+networkNSName, func(_ ns.NetNS) error {
+ loopbackup()
+ linkup("eth0", "46:7f:45:6e:4f:c8", []string{"10.25.40.0/24", "fd04:3e42:4a4e:3381::/64"})
+ linkup("eth1", "56:6e:35:5d:3e:a8", []string{"10.88.0.0/16"})
+
+ routeAdd("10.25.40.0")
+ return nil
+ })
+ }
+
+ checkNetworkNsInspect := func(name string) {
+ inspectOut := podmanTest.InspectContainer(name)
+ Expect(inspectOut[0].NetworkSettings.IPAddress).To(Equal("10.25.40.0"))
+ Expect(inspectOut[0].NetworkSettings.IPPrefixLen).To(Equal(24))
+ Expect(len(inspectOut[0].NetworkSettings.SecondaryIPAddresses)).To(Equal(1))
+ Expect(inspectOut[0].NetworkSettings.SecondaryIPAddresses[0].Addr).To(Equal("10.88.0.0"))
+ Expect(inspectOut[0].NetworkSettings.SecondaryIPAddresses[0].PrefixLength).To(Equal(16))
+ Expect(inspectOut[0].NetworkSettings.GlobalIPv6Address).To(Equal("fd04:3e42:4a4e:3381::"))
+ Expect(inspectOut[0].NetworkSettings.GlobalIPv6PrefixLen).To(Equal(64))
+ Expect(len(inspectOut[0].NetworkSettings.SecondaryIPv6Addresses)).To(Equal(0))
+ Expect(inspectOut[0].NetworkSettings.MacAddress).To(Equal("46:7f:45:6e:4f:c8"))
+ Expect(len(inspectOut[0].NetworkSettings.AdditionalMacAddresses)).To(Equal(1))
+ Expect(inspectOut[0].NetworkSettings.AdditionalMacAddresses[0]).To(Equal("56:6e:35:5d:3e:a8"))
+ Expect(inspectOut[0].NetworkSettings.Gateway).To(Equal("10.25.40.0"))
+
+ }
+
+ It("podman run newtork inspect fails gracefully on non-reachable network ns", func() {
+ SkipIfRootless("ip netns is not supported for rootless users")
+
+ networkNSName := RandomString(12)
+ addNamedNetwork := SystemExec("ip", []string{"netns", "add", networkNSName})
+ Expect(addNamedNetwork).Should(Exit(0))
+
+ setupNetworkNs(networkNSName)
+
+ name := RandomString(12)
+ session := podmanTest.Podman([]string{"run", "-d", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE, "top"})
+ session.WaitWithDefaultTimeout()
+
+ // delete the named network ns before inspect
+ delNetworkNamespace := SystemExec("ip", []string{"netns", "delete", networkNSName})
+ Expect(delNetworkNamespace).Should(Exit(0))
+
+ inspectOut := podmanTest.InspectContainer(name)
+ Expect(inspectOut[0].NetworkSettings.IPAddress).To(Equal(""))
+ Expect(len(inspectOut[0].NetworkSettings.Networks)).To(Equal(0))
+ })
+
+ It("podman inspect can handle joined network ns with multiple interfaces", func() {
+ SkipIfRootless("ip netns is not supported for rootless users")
+
+ networkNSName := RandomString(12)
+ addNamedNetwork := SystemExec("ip", []string{"netns", "add", networkNSName})
+ Expect(addNamedNetwork).Should(Exit(0))
+ defer func() {
+ delNetworkNamespace := SystemExec("ip", []string{"netns", "delete", networkNSName})
+ Expect(delNetworkNamespace).Should(Exit(0))
+ }()
+ setupNetworkNs(networkNSName)
+
+ name := RandomString(12)
+ session := podmanTest.Podman([]string{"run", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE})
+ session.WaitWithDefaultTimeout()
+
+ session = podmanTest.Podman([]string{"container", "rm", name})
+ session.WaitWithDefaultTimeout()
+
+ // no network teardown should touch joined network ns interfaces
+ session = podmanTest.Podman([]string{"run", "-d", "--replace", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE, "top"})
+ session.WaitWithDefaultTimeout()
+
+ checkNetworkNsInspect(name)
+ })
+
+ It("podman do not tamper with joined network ns interfaces", func() {
+ SkipIfRootless("ip netns is not supported for rootless users")
+
+ networkNSName := RandomString(12)
+ addNamedNetwork := SystemExec("ip", []string{"netns", "add", networkNSName})
+ Expect(addNamedNetwork).Should(Exit(0))
+ defer func() {
+ delNetworkNamespace := SystemExec("ip", []string{"netns", "delete", networkNSName})
+ Expect(delNetworkNamespace).Should(Exit(0))
+ }()
+
+ setupNetworkNs(networkNSName)
+
+ name := RandomString(12)
+ session := podmanTest.Podman([]string{"run", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE})
+ session.WaitWithDefaultTimeout()
+
+ checkNetworkNsInspect(name)
+
+ name = RandomString(12)
+ session = podmanTest.Podman([]string{"run", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE})
+ session.WaitWithDefaultTimeout()
+
+ checkNetworkNsInspect(name)
+
+ // delete container, the network inspect should not change
+ session = podmanTest.Podman([]string{"container", "rm", name})
+ session.WaitWithDefaultTimeout()
+
+ session = podmanTest.Podman([]string{"run", "-d", "--replace", "--name", name, "--net", "ns:/run/netns/" + networkNSName, ALPINE, "top"})
+ session.WaitWithDefaultTimeout()
+
+ checkNetworkNsInspect(name)
+ })
+
It("podman run network in bogus user created network namespace", func() {
session := podmanTest.Podman([]string{"run", "-dt", "--net", "ns:/run/netns/xxy", ALPINE, "wget", "www.podman.io"})
session.Wait(90)
--
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