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podman/test/e2e/network_connect_disconnect_test.go
Paul Holzinger 16e8b2f32e podman stats: work with network connect/disconnect 
Hardcoding the interface name is a bad idea. We have no control over the
actual interface name since the user can change it.

The correct thing is to read them from the network status. Since the
contianer can have more than one interface we have to add the RX/TX
values. The other values are currently not used.

For podman 5.0 we should change it so that the API can return the
statistics per interface and the client should sum the TX/RX for the
command output. This is what docker is doing.

Fixes #13824

Signed-off-by: Paul Holzinger <pholzing@redhat.com>
2022-05-31 15:31:07 +02:00

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package integration
import (
"os"
"strings"
. "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/onsi/gomega/types"
)
var _ = Describe("Podman network connect and disconnect", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
It("bad network name in disconnect should result in error", func() {
dis := podmanTest.Podman([]string{"network", "disconnect", "foobar", "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(ExitWithError())
})
It("bad container name in network disconnect should result in error", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
dis := podmanTest.Podman([]string{"network", "disconnect", netName, "foobar"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(ExitWithError())
})
It("network disconnect with net mode slirp4netns should result in error", func() {
netName := "slirp" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
session = podmanTest.Podman([]string{"create", "--name", "test", "--network", "slirp4netns", ALPINE})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
con := podmanTest.Podman([]string{"network", "disconnect", netName, "test"})
con.WaitWithDefaultTimeout()
Expect(con).Should(ExitWithError())
Expect(con.ErrorToString()).To(ContainSubstring(`"slirp4netns" is not supported: invalid network mode`))
})
It("podman network disconnect", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
gw := podmanTest.Podman([]string{"network", "inspect", netName, "--format", "{{(index .Subnets 0).Gateway}}"})
gw.WaitWithDefaultTimeout()
Expect(gw).Should(Exit(0))
ns := gw.OutputToString()
ctr := podmanTest.Podman([]string{"run", "-dt", "--name", "test", "--network", netName, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
exec2 := podmanTest.Podman([]string{"exec", "-it", "test", "cat", "/etc/resolv.conf"})
exec2.WaitWithDefaultTimeout()
Expect(exec2).Should(Exit(0))
Expect(strings.Contains(exec2.OutputToString(), ns)).To(BeTrue())
dis := podmanTest.Podman([]string{"network", "disconnect", netName, "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(Exit(0))
Expect(dis.ErrorToString()).Should(Equal(""))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{len .NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("0"))
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(ExitWithError())
exec3 := podmanTest.Podman([]string{"exec", "-it", "test", "cat", "/etc/resolv.conf"})
exec3.WaitWithDefaultTimeout()
Expect(exec3).Should(Exit(0))
Expect(strings.Contains(exec3.OutputToString(), ns)).To(BeFalse())
// make sure stats still works https://github.com/containers/podman/issues/13824
stats := podmanTest.Podman([]string{"stats", "test", "--no-stream"})
stats.WaitWithDefaultTimeout()
Expect(stats).Should(Exit(0))
})
It("bad network name in connect should result in error", func() {
dis := podmanTest.Podman([]string{"network", "connect", "foobar", "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(ExitWithError())
})
It("bad container name in network connect should result in error", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
dis := podmanTest.Podman([]string{"network", "connect", netName, "foobar"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(ExitWithError())
})
It("network connect with net mode slirp4netns should result in error", func() {
netName := "slirp" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
session = podmanTest.Podman([]string{"create", "--name", "test", "--network", "slirp4netns", ALPINE})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
con := podmanTest.Podman([]string{"network", "connect", netName, "test"})
con.WaitWithDefaultTimeout()
Expect(con).Should(ExitWithError())
Expect(con.ErrorToString()).To(ContainSubstring(`"slirp4netns" is not supported: invalid network mode`))
})
It("podman connect on a container that already is connected to the network should error", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
ctr := podmanTest.Podman([]string{"create", "--name", "test", "--network", netName, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
cid := ctr.OutputToString()
// network alias container short id is always added and shown in inspect
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{(index .NetworkSettings.Networks \"" + netName + "\").Aliases}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("[" + cid[0:12] + "]"))
con := podmanTest.Podman([]string{"network", "connect", netName, "test"})
con.WaitWithDefaultTimeout()
Expect(con).Should(ExitWithError())
})
It("podman network connect", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
ctr := podmanTest.Podman([]string{"run", "-dt", "--name", "test", "--network", netName, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
cid := ctr.OutputToString()
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
// Create a second network
newNetName := "aliasTest" + stringid.GenerateNonCryptoID()
session = podmanTest.Podman([]string{"network", "create", newNetName, "--subnet", "10.11.100.0/24"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(newNetName)
gw := podmanTest.Podman([]string{"network", "inspect", newNetName, "--format", "{{(index .Subnets 0).Gateway}}"})
gw.WaitWithDefaultTimeout()
Expect(gw).Should(Exit(0))
ns := gw.OutputToString()
exec2 := podmanTest.Podman([]string{"exec", "-it", "test", "cat", "/etc/resolv.conf"})
exec2.WaitWithDefaultTimeout()
Expect(exec2).Should(Exit(0))
Expect(strings.Contains(exec2.OutputToString(), ns)).To(BeFalse())
ip := "10.11.100.99"
mac := "44:11:44:11:44:11"
connect := podmanTest.Podman([]string{"network", "connect", "--ip", ip, "--mac-address", mac, newNetName, "test"})
connect.WaitWithDefaultTimeout()
Expect(connect).Should(Exit(0))
Expect(connect.ErrorToString()).Should(Equal(""))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{len .NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("2"))
// network alias container short id is always added and shown in inspect
inspect = podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{(index .NetworkSettings.Networks \"" + newNetName + "\").Aliases}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("[" + cid[0:12] + "]"))
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth1"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
Expect(exec.OutputToString()).Should(ContainSubstring(ip))
Expect(exec.OutputToString()).Should(ContainSubstring(mac))
exec3 := podmanTest.Podman([]string{"exec", "-it", "test", "cat", "/etc/resolv.conf"})
exec3.WaitWithDefaultTimeout()
Expect(exec3).Should(Exit(0))
Expect(strings.Contains(exec3.OutputToString(), ns)).To(BeTrue())
// make sure stats works https://github.com/containers/podman/issues/13824
stats := podmanTest.Podman([]string{"stats", "test", "--no-stream"})
stats.WaitWithDefaultTimeout()
Expect(stats).Should(Exit(0))
// make sure no logrus errors are shown https://github.com/containers/podman/issues/9602
rm := podmanTest.Podman([]string{"rm", "--time=0", "-f", "test"})
rm.WaitWithDefaultTimeout()
Expect(rm).Should(Exit(0))
Expect(rm.ErrorToString()).To(Equal(""))
})
It("podman network connect when not running", func() {
netName1 := "connect1" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName1})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName1)
netName2 := "connect2" + stringid.GenerateNonCryptoID()
session = podmanTest.Podman([]string{"network", "create", netName2})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName2)
ctr := podmanTest.Podman([]string{"create", "--name", "test", "--network", netName1, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
dis := podmanTest.Podman([]string{"network", "connect", netName2, "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(Exit(0))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{len .NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("2"))
start := podmanTest.Podman([]string{"start", "test"})
start.WaitWithDefaultTimeout()
Expect(start).Should(Exit(0))
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth1"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
})
It("podman network connect and run with network ID", func() {
netName := "ID" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
session = podmanTest.Podman([]string{"network", "ls", "--format", "{{.ID}}", "--filter", "name=" + netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
netID := session.OutputToString()
ctr := podmanTest.Podman([]string{"run", "-dt", "--name", "test", "--network", netID, "--network-alias", "somealias", ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
// Create a second network
newNetName := "ID2" + stringid.GenerateNonCryptoID()
session = podmanTest.Podman([]string{"network", "create", newNetName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(newNetName)
session = podmanTest.Podman([]string{"network", "ls", "--format", "{{.ID}}", "--filter", "name=" + newNetName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
newNetID := session.OutputToString()
connect := podmanTest.Podman([]string{"network", "connect", "--alias", "secondalias", newNetID, "test"})
connect.WaitWithDefaultTimeout()
Expect(connect).Should(Exit(0))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{.NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(ContainSubstring(netName))
Expect(inspect.OutputToString()).To(ContainSubstring(newNetName))
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth1"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
})
It("podman network disconnect when not running", func() {
netName1 := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName1})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName1)
netName2 := "aliasTest" + stringid.GenerateNonCryptoID()
session2 := podmanTest.Podman([]string{"network", "create", netName2})
session2.WaitWithDefaultTimeout()
Expect(session2).Should(Exit(0))
defer podmanTest.removeNetwork(netName2)
ctr := podmanTest.Podman([]string{"create", "--name", "test", "--network", netName1 + "," + netName2, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
dis := podmanTest.Podman([]string{"network", "disconnect", netName1, "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(Exit(0))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{len .NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("1"))
start := podmanTest.Podman([]string{"start", "test"})
start.WaitWithDefaultTimeout()
Expect(start).Should(Exit(0))
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
// because the network interface order is not guaranteed to be the same we have to check both eth0 and eth1
// if eth0 did not exists eth1 has to exists
var exitMatcher types.GomegaMatcher = ExitWithError()
if exec.ExitCode() > 0 {
exitMatcher = Exit(0)
}
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth1"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(exitMatcher)
})
It("podman network disconnect and run with network ID", func() {
netName := "aliasTest" + stringid.GenerateNonCryptoID()
session := podmanTest.Podman([]string{"network", "create", netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
defer podmanTest.removeNetwork(netName)
session = podmanTest.Podman([]string{"network", "ls", "--format", "{{.ID}}", "--filter", "name=" + netName})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
netID := session.OutputToString()
ctr := podmanTest.Podman([]string{"run", "-dt", "--name", "test", "--network", netID, ALPINE, "top"})
ctr.WaitWithDefaultTimeout()
Expect(ctr).Should(Exit(0))
exec := podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(Exit(0))
dis := podmanTest.Podman([]string{"network", "disconnect", netID, "test"})
dis.WaitWithDefaultTimeout()
Expect(dis).Should(Exit(0))
inspect := podmanTest.Podman([]string{"container", "inspect", "test", "--format", "{{len .NetworkSettings.Networks}}"})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
Expect(inspect.OutputToString()).To(Equal("0"))
exec = podmanTest.Podman([]string{"exec", "-it", "test", "ip", "addr", "show", "eth0"})
exec.WaitWithDefaultTimeout()
Expect(exec).Should(ExitWithError())
})
})
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