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package integration
import (
"encoding/json"
"net"
"os"
"github.com/containers/common/libnetwork/types"
. "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"
)
func removeNetworkDevice(name string) {
session := SystemExec("ip", []string{"link", "delete", name})
session.WaitWithDefaultTimeout()
}
var _ = Describe("Podman network create", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
podmanTest.SeedImages()
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
It("podman network create with name and subnet", func() {
netName := "subnet-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.12.0/24", "--ip-range", "10.11.12.0/26", netName})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName)
Expect(nc).Should(Exit(0))
// Inspect the network configuration
inspect := podmanTest.Podman([]string{"network", "inspect", netName})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
// JSON the network configuration into something usable
var results []types.Network
err := json.Unmarshal([]byte(inspect.OutputToString()), &results)
Expect(err).To(BeNil())
Expect(results).To(HaveLen(1))
result := results[0]
Expect(result.Name).To(Equal(netName))
Expect(result.Subnets).To(HaveLen(1))
Expect(result.Subnets[0].Subnet.String()).To(Equal("10.11.12.0/24"))
Expect(result.Subnets[0].Gateway.String()).To(Equal("10.11.12.1"))
Expect(result.Subnets[0].LeaseRange).ToNot(BeNil())
Expect(result.Subnets[0].LeaseRange.StartIP.String()).To(Equal("10.11.12.1"))
Expect(result.Subnets[0].LeaseRange.EndIP.String()).To(Equal("10.11.12.63"))
// Once a container executes a new network, the nic will be created. We should clean those up
// best we can
defer removeNetworkDevice(result.NetworkInterface)
try := podmanTest.Podman([]string{"run", "-it", "--rm", "--network", netName, ALPINE, "sh", "-c", "ip addr show eth0 | awk ' /inet / {print $2}'"})
try.WaitWithDefaultTimeout()
Expect(try).To(Exit(0))
_, subnet, err := net.ParseCIDR("10.11.12.0/24")
Expect(err).To(BeNil())
// Note this is an IPv4 test only!
containerIP, _, err := net.ParseCIDR(try.OutputToString())
Expect(err).To(BeNil())
// Ensure that the IP the container got is within the subnet the user asked for
Expect(subnet.Contains(containerIP)).To(BeTrue())
})
It("podman network create with name and IPv6 subnet", func() {
netName := "ipv6-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "fd00:1:2:3:4::/64", netName})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName)
Expect(nc).Should(Exit(0))
// Inspect the network configuration
inspect := podmanTest.Podman([]string{"network", "inspect", netName})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
// JSON the network configuration into something usable
var results []types.Network
err := json.Unmarshal([]byte(inspect.OutputToString()), &results)
Expect(err).To(BeNil())
Expect(results).To(HaveLen(1))
result := results[0]
Expect(result.Name).To(Equal(netName))
Expect(result.Subnets).To(HaveLen(1))
Expect(result.Subnets[0].Gateway.String()).To(Equal("fd00:1:2:3::1"))
Expect(result.Subnets[0].Subnet.String()).To(Equal("fd00:1:2:3::/64"))
// Once a container executes a new network, the nic will be created. We should clean those up
// best we can
defer removeNetworkDevice(result.NetworkInterface)
try := podmanTest.Podman([]string{"run", "-it", "--rm", "--network", netName, ALPINE, "sh", "-c", "ip addr show eth0 | grep global | awk ' /inet6 / {print $2}'"})
try.WaitWithDefaultTimeout()
Expect(try).To(Exit(0))
_, subnet, err := net.ParseCIDR("fd00:1:2:3:4::/64")
Expect(err).To(BeNil())
containerIP, _, err := net.ParseCIDR(try.OutputToString())
Expect(err).To(BeNil())
// Ensure that the IP the container got is within the subnet the user asked for
Expect(subnet.Contains(containerIP)).To(BeTrue())
})
It("podman network create with name and IPv6 flag (dual-stack)", func() {
netName := "dual-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "fd00:4:3:2::/64", "--ipv6", netName})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName)
Expect(nc).Should(Exit(0))
// Inspect the network configuration
inspect := podmanTest.Podman([]string{"network", "inspect", netName})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
// JSON the network configuration into something usable
var results []types.Network
err := json.Unmarshal([]byte(inspect.OutputToString()), &results)
Expect(err).To(BeNil())
Expect(results).To(HaveLen(1))
result := results[0]
Expect(result.Name).To(Equal(netName))
Expect(result.Subnets).To(HaveLen(2))
Expect(result.Subnets[0].Subnet.IP).ToNot(BeNil())
Expect(result.Subnets[1].Subnet.IP).ToNot(BeNil())
_, subnet11, err := net.ParseCIDR(result.Subnets[0].Subnet.String())
Expect(err).To(BeNil())
_, subnet12, err := net.ParseCIDR(result.Subnets[1].Subnet.String())
Expect(err).To(BeNil())
// Once a container executes a new network, the nic will be created. We should clean those up
// best we can
defer removeNetworkDevice(result.NetworkInterface)
// create a second network to check the auto assigned ipv4 subnet does not overlap
// https://github.com/containers/podman/issues/11032
netName2 := "dual-" + stringid.GenerateNonCryptoID()
nc = podmanTest.Podman([]string{"network", "create", "--subnet", "fd00:10:3:2::/64", "--ipv6", netName2})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName2)
Expect(nc).Should(Exit(0))
// Inspect the network configuration
inspect = podmanTest.Podman([]string{"network", "inspect", netName2})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
// JSON the network configuration into something usable
err = json.Unmarshal([]byte(inspect.OutputToString()), &results)
Expect(err).To(BeNil())
Expect(results).To(HaveLen(1))
result = results[0]
Expect(result.Name).To(Equal(netName2))
Expect(result.Subnets).To(HaveLen(2))
Expect(result.Subnets[0].Subnet.IP).ToNot(BeNil())
Expect(result.Subnets[1].Subnet.IP).ToNot(BeNil())
_, subnet21, err := net.ParseCIDR(result.Subnets[0].Subnet.String())
Expect(err).To(BeNil())
_, subnet22, err := net.ParseCIDR(result.Subnets[1].Subnet.String())
Expect(err).To(BeNil())
// check that the subnets do not overlap
Expect(subnet11.Contains(subnet21.IP)).To(BeFalse())
Expect(subnet12.Contains(subnet22.IP)).To(BeFalse())
try := podmanTest.Podman([]string{"run", "-it", "--rm", "--network", netName, ALPINE, "sh", "-c", "ip addr show eth0 | grep global | awk ' /inet6 / {print $2}'"})
try.WaitWithDefaultTimeout()
_, subnet, err := net.ParseCIDR("fd00:4:3:2:1::/64")
Expect(err).To(BeNil())
containerIP, _, err := net.ParseCIDR(try.OutputToString())
Expect(err).To(BeNil())
// Ensure that the IP the container got is within the subnet the user asked for
Expect(subnet.Contains(containerIP)).To(BeTrue())
// verify the container has an IPv4 address too (the IPv4 subnet is autogenerated)
try = podmanTest.Podman([]string{"run", "-it", "--rm", "--network", netName, ALPINE, "sh", "-c", "ip addr show eth0 | awk ' /inet / {print $2}'"})
try.WaitWithDefaultTimeout()
containerIP, _, err = net.ParseCIDR(try.OutputToString())
Expect(err).To(BeNil())
Expect(containerIP.To4()).To(Not(BeNil()))
})
It("podman network create with invalid subnet", func() {
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.12.0/17000", stringid.GenerateNonCryptoID()})
nc.WaitWithDefaultTimeout()
Expect(nc).To(ExitWithError())
})
It("podman network create with ipv4 subnet and ipv6 flag", func() {
name := stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.12.0/24", "--ipv6", name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(0))
defer podmanTest.removeNetwork(name)
nc = podmanTest.Podman([]string{"network", "inspect", name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(0))
Expect(nc.OutputToString()).To(ContainSubstring(`::/64`))
Expect(nc.OutputToString()).To(ContainSubstring(`10.11.12.0/24`))
})
It("podman network create with empty subnet and ipv6 flag", func() {
name := stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--ipv6", name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(0))
defer podmanTest.removeNetwork(name)
nc = podmanTest.Podman([]string{"network", "inspect", name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(0))
Expect(nc.OutputToString()).To(ContainSubstring(`::/64`))
Expect(nc.OutputToString()).To(ContainSubstring(`.0/24`))
})
It("podman network create with invalid IP", func() {
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.0/17000", stringid.GenerateNonCryptoID()})
nc.WaitWithDefaultTimeout()
Expect(nc).To(ExitWithError())
})
It("podman network create with invalid gateway for subnet", func() {
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.12.0/24", "--gateway", "192.168.1.1", stringid.GenerateNonCryptoID()})
nc.WaitWithDefaultTimeout()
Expect(nc).To(ExitWithError())
})
It("podman network create two networks with same name should fail", func() {
netName := "same-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", netName})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName)
Expect(nc).Should(Exit(0))
ncFail := podmanTest.Podman([]string{"network", "create", netName})
ncFail.WaitWithDefaultTimeout()
Expect(ncFail).To(ExitWithError())
})
It("podman network create two networks with same subnet should fail", func() {
netName1 := "sub1-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.13.0/24", netName1})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName1)
Expect(nc).Should(Exit(0))
netName2 := "sub2-" + stringid.GenerateNonCryptoID()
ncFail := podmanTest.Podman([]string{"network", "create", "--subnet", "10.11.13.0/24", netName2})
ncFail.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName2)
Expect(ncFail).To(ExitWithError())
})
It("podman network create two IPv6 networks with same subnet should fail", func() {
netName1 := "subipv61-" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--subnet", "fd00:4:4:4:4::/64", "--ipv6", netName1})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName1)
Expect(nc).Should(Exit(0))
netName2 := "subipv62-" + stringid.GenerateNonCryptoID()
ncFail := podmanTest.Podman([]string{"network", "create", "--subnet", "fd00:4:4:4:4::/64", "--ipv6", netName2})
ncFail.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(netName2)
Expect(ncFail).To(ExitWithError())
})
It("podman network create with invalid network name", func() {
nc := podmanTest.Podman([]string{"network", "create", "foo "})
nc.WaitWithDefaultTimeout()
Expect(nc).To(ExitWithError())
})
It("podman network create with mtu option", func() {
net := "mtu-test" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--opt", "mtu=9000", net})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(net)
Expect(nc).Should(Exit(0))
nc = podmanTest.Podman([]string{"network", "inspect", net})
nc.WaitWithDefaultTimeout()
Expect(nc).Should(Exit(0))
Expect(nc.OutputToString()).To(ContainSubstring(`"mtu": "9000"`))
})
It("podman network create with vlan option", func() {
net := "vlan-test" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--opt", "vlan=9", net})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(net)
Expect(nc).Should(Exit(0))
nc = podmanTest.Podman([]string{"network", "inspect", net})
nc.WaitWithDefaultTimeout()
Expect(nc).Should(Exit(0))
Expect(nc.OutputToString()).To(ContainSubstring(`"vlan": "9"`))
})
It("podman network create with invalid option", func() {
net := "invalid-test" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--opt", "foo=bar", net})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(net)
Expect(nc).To(ExitWithError())
})
It("podman network create with internal should not have dnsname", func() {
SkipUntilAardvark(podmanTest)
net := "internal-test" + stringid.GenerateNonCryptoID()
nc := podmanTest.Podman([]string{"network", "create", "--internal", net})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(net)
Expect(nc).Should(Exit(0))
// Not performing this check on remote tests because it is a logrus error which does
// not come back via stderr on the remote client.
if !IsRemote() {
Expect(nc.ErrorToString()).To(ContainSubstring("dnsname and internal networks are incompatible"))
}
nc = podmanTest.Podman([]string{"network", "inspect", net})
nc.WaitWithDefaultTimeout()
Expect(nc).Should(Exit(0))
Expect(nc.OutputToString()).ToNot(ContainSubstring("dnsname"))
})
It("podman network create with invalid name", func() {
for _, name := range []string{"none", "host", "bridge", "private", "slirp4netns", "container", "ns"} {
nc := podmanTest.Podman([]string{"network", "create", name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(125))
Expect(nc.ErrorToString()).To(ContainSubstring("cannot create network with name %q because it conflicts with a valid network mode", name))
}
})
It("podman network create with multiple subnets", func() {
name := "subnets-" + stringid.GenerateNonCryptoID()
subnet1 := "10.10.0.0/24"
subnet2 := "10.10.1.0/24"
nc := podmanTest.Podman([]string{"network", "create", "--subnet", subnet1, "--subnet", subnet2, name})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(name)
Expect(nc).To(Exit(0))
Expect(nc.OutputToString()).To(Equal(name))
inspect := podmanTest.Podman([]string{"network", "inspect", name})
inspect.WaitWithDefaultTimeout()
Expect(inspect).To(Exit(0))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet1))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet2))
Expect(inspect.OutputToString()).To(ContainSubstring(`"ipv6_enabled": false`))
})
It("podman network create with multiple subnets dual stack", func() {
name := "subnets-" + stringid.GenerateNonCryptoID()
subnet1 := "10.10.2.0/24"
subnet2 := "fd52:2a5a:747e:3acd::/64"
nc := podmanTest.Podman([]string{"network", "create", "--subnet", subnet1, "--subnet", subnet2, name})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(name)
Expect(nc).To(Exit(0))
Expect(nc.OutputToString()).To(Equal(name))
inspect := podmanTest.Podman([]string{"network", "inspect", name})
inspect.WaitWithDefaultTimeout()
Expect(inspect).To(Exit(0))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet1))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet2))
Expect(inspect.OutputToString()).To(ContainSubstring(`"ipv6_enabled": true`))
})
It("podman network create with multiple subnets dual stack with gateway and range", func() {
name := "subnets-" + stringid.GenerateNonCryptoID()
subnet1 := "10.10.3.0/24"
gw1 := "10.10.3.10"
range1 := "10.10.3.0/26"
subnet2 := "fd52:2a5a:747e:3acd::/64"
gw2 := "fd52:2a5a:747e:3acd::10"
nc := podmanTest.Podman([]string{"network", "create", "--subnet", subnet1, "--gateway", gw1, "--ip-range", range1, "--subnet", subnet2, "--gateway", gw2, name})
nc.WaitWithDefaultTimeout()
defer podmanTest.removeNetwork(name)
Expect(nc).To(Exit(0))
Expect(nc.OutputToString()).To(Equal(name))
inspect := podmanTest.Podman([]string{"network", "inspect", name})
inspect.WaitWithDefaultTimeout()
Expect(inspect).To(Exit(0))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet1))
Expect(inspect.OutputToString()).To(ContainSubstring(`"gateway": "` + gw1))
Expect(inspect.OutputToString()).To(ContainSubstring(`"start_ip": "10.10.3.1",`))
Expect(inspect.OutputToString()).To(ContainSubstring(`"end_ip": "10.10.3.63"`))
Expect(inspect.OutputToString()).To(ContainSubstring(`"subnet": "` + subnet2))
Expect(inspect.OutputToString()).To(ContainSubstring(`"gateway": "` + gw2))
Expect(inspect.OutputToString()).To(ContainSubstring(`"ipv6_enabled": true`))
})
It("podman network create invalid options with multiple subnets", func() {
name := "subnets-" + stringid.GenerateNonCryptoID()
subnet1 := "10.10.3.0/24"
gw1 := "10.10.3.10"
gw2 := "fd52:2a5a:747e:3acd::10"
nc := podmanTest.Podman([]string{"network", "create", "--subnet", subnet1, "--gateway", gw1, "--gateway", gw2, name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(125))
Expect(nc.ErrorToString()).To(Equal("Error: cannot set more gateways than subnets"))
range1 := "10.10.3.0/26"
range2 := "10.10.3.0/28"
nc = podmanTest.Podman([]string{"network", "create", "--subnet", subnet1, "--ip-range", range1, "--ip-range", range2, name})
nc.WaitWithDefaultTimeout()
Expect(nc).To(Exit(125))
Expect(nc.ErrorToString()).To(Equal("Error: cannot set more ranges than subnets"))
})
})
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