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docker_cli_network_unix_test.go
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docker_cli_network_unix_test.go
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// +build !windows
package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"net"
"net/http"
"net/http/httptest"
"os"
"strings"
"time"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/versions/v1p20"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/cli"
"github.com/docker/docker/integration-cli/daemon"
testdaemon "github.com/docker/docker/internal/test/daemon"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/docker/runconfig"
"github.com/docker/libnetwork/driverapi"
remoteapi "github.com/docker/libnetwork/drivers/remote/api"
"github.com/docker/libnetwork/ipamapi"
remoteipam "github.com/docker/libnetwork/ipams/remote/api"
"github.com/docker/libnetwork/netlabel"
"github.com/go-check/check"
"github.com/vishvananda/netlink"
"golang.org/x/sys/unix"
"gotest.tools/icmd"
)
const dummyNetworkDriver = "dummy-network-driver"
const dummyIPAMDriver = "dummy-ipam-driver"
var remoteDriverNetworkRequest remoteapi.CreateNetworkRequest
func init() {
check.Suite(&DockerNetworkSuite{
ds: &DockerSuite{},
})
}
type DockerNetworkSuite struct {
server *httptest.Server
ds *DockerSuite
d *daemon.Daemon
}
func (s *DockerNetworkSuite) SetUpTest(c *check.C) {
s.d = daemon.New(c, dockerBinary, dockerdBinary, testdaemon.WithEnvironment(testEnv.Execution))
}
func (s *DockerNetworkSuite) TearDownTest(c *check.C) {
if s.d != nil {
s.d.Stop(c)
s.ds.TearDownTest(c)
}
}
func (s *DockerNetworkSuite) SetUpSuite(c *check.C) {
mux := http.NewServeMux()
s.server = httptest.NewServer(mux)
c.Assert(s.server, check.NotNil, check.Commentf("Failed to start an HTTP Server"))
setupRemoteNetworkDrivers(c, mux, s.server.URL, dummyNetworkDriver, dummyIPAMDriver)
}
func setupRemoteNetworkDrivers(c *check.C, mux *http.ServeMux, url, netDrv, ipamDrv string) {
mux.HandleFunc("/Plugin.Activate", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, `{"Implements": ["%s", "%s"]}`, driverapi.NetworkPluginEndpointType, ipamapi.PluginEndpointType)
})
// Network driver implementation
mux.HandleFunc(fmt.Sprintf("/%s.GetCapabilities", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, `{"Scope":"local"}`)
})
mux.HandleFunc(fmt.Sprintf("/%s.CreateNetwork", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
err := json.NewDecoder(r.Body).Decode(&remoteDriverNetworkRequest)
if err != nil {
http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, "null")
})
mux.HandleFunc(fmt.Sprintf("/%s.DeleteNetwork", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, "null")
})
mux.HandleFunc(fmt.Sprintf("/%s.CreateEndpoint", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, `{"Interface":{"MacAddress":"a0:b1:c2:d3:e4:f5"}}`)
})
mux.HandleFunc(fmt.Sprintf("/%s.Join", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
veth := &netlink.Veth{
LinkAttrs: netlink.LinkAttrs{Name: "randomIfName", TxQLen: 0}, PeerName: "cnt0"}
if err := netlink.LinkAdd(veth); err != nil {
fmt.Fprintf(w, `{"Error":"failed to add veth pair: `+err.Error()+`"}`)
} else {
fmt.Fprintf(w, `{"InterfaceName":{ "SrcName":"cnt0", "DstPrefix":"veth"}}`)
}
})
mux.HandleFunc(fmt.Sprintf("/%s.Leave", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, "null")
})
mux.HandleFunc(fmt.Sprintf("/%s.DeleteEndpoint", driverapi.NetworkPluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
if link, err := netlink.LinkByName("cnt0"); err == nil {
netlink.LinkDel(link)
}
fmt.Fprintf(w, "null")
})
// IPAM Driver implementation
var (
poolRequest remoteipam.RequestPoolRequest
poolReleaseReq remoteipam.ReleasePoolRequest
addressRequest remoteipam.RequestAddressRequest
addressReleaseReq remoteipam.ReleaseAddressRequest
lAS = "localAS"
gAS = "globalAS"
pool = "172.28.0.0/16"
poolID = lAS + "/" + pool
gw = "172.28.255.254/16"
)
mux.HandleFunc(fmt.Sprintf("/%s.GetDefaultAddressSpaces", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
fmt.Fprintf(w, `{"LocalDefaultAddressSpace":"`+lAS+`", "GlobalDefaultAddressSpace": "`+gAS+`"}`)
})
mux.HandleFunc(fmt.Sprintf("/%s.RequestPool", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
err := json.NewDecoder(r.Body).Decode(&poolRequest)
if err != nil {
http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
if poolRequest.AddressSpace != lAS && poolRequest.AddressSpace != gAS {
fmt.Fprintf(w, `{"Error":"Unknown address space in pool request: `+poolRequest.AddressSpace+`"}`)
} else if poolRequest.Pool != "" && poolRequest.Pool != pool {
fmt.Fprintf(w, `{"Error":"Cannot handle explicit pool requests yet"}`)
} else {
fmt.Fprintf(w, `{"PoolID":"`+poolID+`", "Pool":"`+pool+`"}`)
}
})
mux.HandleFunc(fmt.Sprintf("/%s.RequestAddress", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
err := json.NewDecoder(r.Body).Decode(&addressRequest)
if err != nil {
http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
// make sure libnetwork is now querying on the expected pool id
if addressRequest.PoolID != poolID {
fmt.Fprintf(w, `{"Error":"unknown pool id"}`)
} else if addressRequest.Address != "" {
fmt.Fprintf(w, `{"Error":"Cannot handle explicit address requests yet"}`)
} else {
fmt.Fprintf(w, `{"Address":"`+gw+`"}`)
}
})
mux.HandleFunc(fmt.Sprintf("/%s.ReleaseAddress", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
err := json.NewDecoder(r.Body).Decode(&addressReleaseReq)
if err != nil {
http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
// make sure libnetwork is now asking to release the expected address from the expected poolid
if addressRequest.PoolID != poolID {
fmt.Fprintf(w, `{"Error":"unknown pool id"}`)
} else if addressReleaseReq.Address != gw {
fmt.Fprintf(w, `{"Error":"unknown address"}`)
} else {
fmt.Fprintf(w, "null")
}
})
mux.HandleFunc(fmt.Sprintf("/%s.ReleasePool", ipamapi.PluginEndpointType), func(w http.ResponseWriter, r *http.Request) {
err := json.NewDecoder(r.Body).Decode(&poolReleaseReq)
if err != nil {
http.Error(w, "Unable to decode JSON payload: "+err.Error(), http.StatusBadRequest)
return
}
w.Header().Set("Content-Type", "application/vnd.docker.plugins.v1+json")
// make sure libnetwork is now asking to release the expected poolid
if addressRequest.PoolID != poolID {
fmt.Fprintf(w, `{"Error":"unknown pool id"}`)
} else {
fmt.Fprintf(w, "null")
}
})
err := os.MkdirAll("/etc/docker/plugins", 0755)
c.Assert(err, checker.IsNil)
fileName := fmt.Sprintf("/etc/docker/plugins/%s.spec", netDrv)
err = ioutil.WriteFile(fileName, []byte(url), 0644)
c.Assert(err, checker.IsNil)
ipamFileName := fmt.Sprintf("/etc/docker/plugins/%s.spec", ipamDrv)
err = ioutil.WriteFile(ipamFileName, []byte(url), 0644)
c.Assert(err, checker.IsNil)
}
func (s *DockerNetworkSuite) TearDownSuite(c *check.C) {
if s.server == nil {
return
}
s.server.Close()
err := os.RemoveAll("/etc/docker/plugins")
c.Assert(err, checker.IsNil)
}
func assertNwIsAvailable(c *check.C, name string) {
if !isNwPresent(c, name) {
c.Fatalf("Network %s not found in network ls o/p", name)
}
}
func assertNwNotAvailable(c *check.C, name string) {
if isNwPresent(c, name) {
c.Fatalf("Found network %s in network ls o/p", name)
}
}
func isNwPresent(c *check.C, name string) bool {
out, _ := dockerCmd(c, "network", "ls")
lines := strings.Split(out, "\n")
for i := 1; i < len(lines)-1; i++ {
netFields := strings.Fields(lines[i])
if netFields[1] == name {
return true
}
}
return false
}
// assertNwList checks network list retrieved with ls command
// equals to expected network list
// note: out should be `network ls [option]` result
func assertNwList(c *check.C, out string, expectNws []string) {
lines := strings.Split(out, "\n")
var nwList []string
for _, line := range lines[1 : len(lines)-1] {
netFields := strings.Fields(line)
// wrap all network name in nwList
nwList = append(nwList, netFields[1])
}
// network ls should contains all expected networks
c.Assert(nwList, checker.DeepEquals, expectNws)
}
func getNwResource(c *check.C, name string) *types.NetworkResource {
out, _ := dockerCmd(c, "network", "inspect", name)
var nr []types.NetworkResource
err := json.Unmarshal([]byte(out), &nr)
c.Assert(err, check.IsNil)
return &nr[0]
}
func (s *DockerNetworkSuite) TestDockerNetworkLsDefault(c *check.C) {
defaults := []string{"bridge", "host", "none"}
for _, nn := range defaults {
assertNwIsAvailable(c, nn)
}
}
func (s *DockerNetworkSuite) TestDockerNetworkCreatePredefined(c *check.C) {
predefined := []string{"bridge", "host", "none", "default"}
for _, net := range predefined {
// predefined networks can't be created again
out, _, err := dockerCmdWithError("network", "create", net)
c.Assert(err, checker.NotNil, check.Commentf("%v", out))
}
}
func (s *DockerNetworkSuite) TestDockerNetworkCreateHostBind(c *check.C) {
dockerCmd(c, "network", "create", "--subnet=192.168.10.0/24", "--gateway=192.168.10.1", "-o", "com.docker.network.bridge.host_binding_ipv4=192.168.10.1", "testbind")
assertNwIsAvailable(c, "testbind")
out := runSleepingContainer(c, "--net=testbind", "-p", "5000:5000")
id := strings.TrimSpace(out)
c.Assert(waitRun(id), checker.IsNil)
out, _ = dockerCmd(c, "ps")
c.Assert(out, checker.Contains, "192.168.10.1:5000->5000/tcp")
}
func (s *DockerNetworkSuite) TestDockerNetworkRmPredefined(c *check.C) {
predefined := []string{"bridge", "host", "none", "default"}
for _, net := range predefined {
// predefined networks can't be removed
out, _, err := dockerCmdWithError("network", "rm", net)
c.Assert(err, checker.NotNil, check.Commentf("%v", out))
}
}
func (s *DockerNetworkSuite) TestDockerNetworkLsFilter(c *check.C) {
testRequires(c, OnlyDefaultNetworks)
testNet := "testnet1"
testLabel := "foo"
testValue := "bar"
out, _ := dockerCmd(c, "network", "create", "dev")
defer func() {
dockerCmd(c, "network", "rm", "dev")
dockerCmd(c, "network", "rm", testNet)
}()
networkID := strings.TrimSpace(out)
// filter with partial ID
// only show 'dev' network
out, _ = dockerCmd(c, "network", "ls", "-f", "id="+networkID[0:5])
assertNwList(c, out, []string{"dev"})
out, _ = dockerCmd(c, "network", "ls", "-f", "name=dge")
assertNwList(c, out, []string{"bridge"})
// only show built-in network (bridge, none, host)
out, _ = dockerCmd(c, "network", "ls", "-f", "type=builtin")
assertNwList(c, out, []string{"bridge", "host", "none"})
// only show custom networks (dev)
out, _ = dockerCmd(c, "network", "ls", "-f", "type=custom")
assertNwList(c, out, []string{"dev"})
// show all networks with filter
// it should be equivalent of ls without option
out, _ = dockerCmd(c, "network", "ls", "-f", "type=custom", "-f", "type=builtin")
assertNwList(c, out, []string{"bridge", "dev", "host", "none"})
out, _ = dockerCmd(c, "network", "create", "--label", testLabel+"="+testValue, testNet)
assertNwIsAvailable(c, testNet)
out, _ = dockerCmd(c, "network", "ls", "-f", "label="+testLabel)
assertNwList(c, out, []string{testNet})
out, _ = dockerCmd(c, "network", "ls", "-f", "label="+testLabel+"="+testValue)
assertNwList(c, out, []string{testNet})
out, _ = dockerCmd(c, "network", "ls", "-f", "label=nonexistent")
outArr := strings.Split(strings.TrimSpace(out), "\n")
c.Assert(len(outArr), check.Equals, 1, check.Commentf("%s\n", out))
out, _ = dockerCmd(c, "network", "ls", "-f", "driver=null")
assertNwList(c, out, []string{"none"})
out, _ = dockerCmd(c, "network", "ls", "-f", "driver=host")
assertNwList(c, out, []string{"host"})
out, _ = dockerCmd(c, "network", "ls", "-f", "driver=bridge")
assertNwList(c, out, []string{"bridge", "dev", testNet})
}
func (s *DockerNetworkSuite) TestDockerNetworkCreateDelete(c *check.C) {
dockerCmd(c, "network", "create", "test")
assertNwIsAvailable(c, "test")
dockerCmd(c, "network", "rm", "test")
assertNwNotAvailable(c, "test")
}
func (s *DockerNetworkSuite) TestDockerNetworkCreateLabel(c *check.C) {
testNet := "testnetcreatelabel"
testLabel := "foo"
testValue := "bar"
dockerCmd(c, "network", "create", "--label", testLabel+"="+testValue, testNet)
assertNwIsAvailable(c, testNet)
out, _, err := dockerCmdWithError("network", "inspect", "--format={{ .Labels."+testLabel+" }}", testNet)
c.Assert(err, check.IsNil)
c.Assert(strings.TrimSpace(out), check.Equals, testValue)
dockerCmd(c, "network", "rm", testNet)
assertNwNotAvailable(c, testNet)
}
func (s *DockerSuite) TestDockerNetworkDeleteNotExists(c *check.C) {
out, _, err := dockerCmdWithError("network", "rm", "test")
c.Assert(err, checker.NotNil, check.Commentf("%v", out))
}
func (s *DockerSuite) TestDockerNetworkDeleteMultiple(c *check.C) {
dockerCmd(c, "network", "create", "testDelMulti0")
assertNwIsAvailable(c, "testDelMulti0")
dockerCmd(c, "network", "create", "testDelMulti1")
assertNwIsAvailable(c, "testDelMulti1")
dockerCmd(c, "network", "create", "testDelMulti2")
assertNwIsAvailable(c, "testDelMulti2")
out, _ := dockerCmd(c, "run", "-d", "--net", "testDelMulti2", "busybox", "top")
containerID := strings.TrimSpace(out)
waitRun(containerID)
// delete three networks at the same time, since testDelMulti2
// contains active container, its deletion should fail.
out, _, err := dockerCmdWithError("network", "rm", "testDelMulti0", "testDelMulti1", "testDelMulti2")
// err should not be nil due to deleting testDelMulti2 failed.
c.Assert(err, checker.NotNil, check.Commentf("out: %s", out))
// testDelMulti2 should fail due to network has active endpoints
c.Assert(out, checker.Contains, "has active endpoints")
assertNwNotAvailable(c, "testDelMulti0")
assertNwNotAvailable(c, "testDelMulti1")
// testDelMulti2 can't be deleted, so it should exist
assertNwIsAvailable(c, "testDelMulti2")
}
func (s *DockerSuite) TestDockerNetworkInspect(c *check.C) {
out, _ := dockerCmd(c, "network", "inspect", "host")
var networkResources []types.NetworkResource
err := json.Unmarshal([]byte(out), &networkResources)
c.Assert(err, check.IsNil)
c.Assert(networkResources, checker.HasLen, 1)
out, _ = dockerCmd(c, "network", "inspect", "--format={{ .Name }}", "host")
c.Assert(strings.TrimSpace(out), check.Equals, "host")
}
func (s *DockerSuite) TestDockerNetworkInspectWithID(c *check.C) {
out, _ := dockerCmd(c, "network", "create", "test2")
networkID := strings.TrimSpace(out)
assertNwIsAvailable(c, "test2")
out, _ = dockerCmd(c, "network", "inspect", "--format={{ .Id }}", "test2")
c.Assert(strings.TrimSpace(out), check.Equals, networkID)
out, _ = dockerCmd(c, "network", "inspect", "--format={{ .ID }}", "test2")
c.Assert(strings.TrimSpace(out), check.Equals, networkID)
}
func (s *DockerSuite) TestDockerInspectMultipleNetwork(c *check.C) {
result := dockerCmdWithResult("network", "inspect", "host", "none")
result.Assert(c, icmd.Success)
var networkResources []types.NetworkResource
err := json.Unmarshal([]byte(result.Stdout()), &networkResources)
c.Assert(err, check.IsNil)
c.Assert(networkResources, checker.HasLen, 2)
}
func (s *DockerSuite) TestDockerInspectMultipleNetworksIncludingNonexistent(c *check.C) {
// non-existent network was not at the beginning of the inspect list
// This should print an error, return an exitCode 1 and print the host network
result := dockerCmdWithResult("network", "inspect", "host", "nonexistent")
result.Assert(c, icmd.Expected{
ExitCode: 1,
Err: "Error: No such network: nonexistent",
Out: "host",
})
var networkResources []types.NetworkResource
err := json.Unmarshal([]byte(result.Stdout()), &networkResources)
c.Assert(err, check.IsNil)
c.Assert(networkResources, checker.HasLen, 1)
// Only one non-existent network to inspect
// Should print an error and return an exitCode, nothing else
result = dockerCmdWithResult("network", "inspect", "nonexistent")
result.Assert(c, icmd.Expected{
ExitCode: 1,
Err: "Error: No such network: nonexistent",
Out: "[]",
})
// non-existent network was at the beginning of the inspect list
// Should not fail fast, and still print host network but print an error
result = dockerCmdWithResult("network", "inspect", "nonexistent", "host")
result.Assert(c, icmd.Expected{
ExitCode: 1,
Err: "Error: No such network: nonexistent",
Out: "host",
})
networkResources = []types.NetworkResource{}
err = json.Unmarshal([]byte(result.Stdout()), &networkResources)
c.Assert(err, check.IsNil)
c.Assert(networkResources, checker.HasLen, 1)
}
func (s *DockerSuite) TestDockerInspectNetworkWithContainerName(c *check.C) {
dockerCmd(c, "network", "create", "brNetForInspect")
assertNwIsAvailable(c, "brNetForInspect")
defer func() {
dockerCmd(c, "network", "rm", "brNetForInspect")
assertNwNotAvailable(c, "brNetForInspect")
}()
out, _ := dockerCmd(c, "run", "-d", "--name", "testNetInspect1", "--net", "brNetForInspect", "busybox", "top")
c.Assert(waitRun("testNetInspect1"), check.IsNil)
containerID := strings.TrimSpace(out)
defer func() {
// we don't stop container by name, because we'll rename it later
dockerCmd(c, "stop", containerID)
}()
out, _ = dockerCmd(c, "network", "inspect", "brNetForInspect")
var networkResources []types.NetworkResource
err := json.Unmarshal([]byte(out), &networkResources)
c.Assert(err, check.IsNil)
c.Assert(networkResources, checker.HasLen, 1)
container, ok := networkResources[0].Containers[containerID]
c.Assert(ok, checker.True)
c.Assert(container.Name, checker.Equals, "testNetInspect1")
// rename container and check docker inspect output update
newName := "HappyNewName"
dockerCmd(c, "rename", "testNetInspect1", newName)
// check whether network inspect works properly
out, _ = dockerCmd(c, "network", "inspect", "brNetForInspect")
var newNetRes []types.NetworkResource
err = json.Unmarshal([]byte(out), &newNetRes)
c.Assert(err, check.IsNil)
c.Assert(newNetRes, checker.HasLen, 1)
container1, ok := newNetRes[0].Containers[containerID]
c.Assert(ok, checker.True)
c.Assert(container1.Name, checker.Equals, newName)
}
func (s *DockerNetworkSuite) TestDockerNetworkConnectDisconnect(c *check.C) {
dockerCmd(c, "network", "create", "test")
assertNwIsAvailable(c, "test")
nr := getNwResource(c, "test")
c.Assert(nr.Name, checker.Equals, "test")
c.Assert(len(nr.Containers), checker.Equals, 0)
// run a container
out, _ := dockerCmd(c, "run", "-d", "--name", "test", "busybox", "top")
c.Assert(waitRun("test"), check.IsNil)
containerID := strings.TrimSpace(out)
// connect the container to the test network
dockerCmd(c, "network", "connect", "test", containerID)
// inspect the network to make sure container is connected
nr = getNetworkResource(c, nr.ID)
c.Assert(len(nr.Containers), checker.Equals, 1)
c.Assert(nr.Containers[containerID], check.NotNil)
// check if container IP matches network inspect
ip, _, err := net.ParseCIDR(nr.Containers[containerID].IPv4Address)
c.Assert(err, check.IsNil)
containerIP := findContainerIP(c, "test", "test")
c.Assert(ip.String(), checker.Equals, containerIP)
// disconnect container from the network
dockerCmd(c, "network", "disconnect", "test", containerID)
nr = getNwResource(c, "test")
c.Assert(nr.Name, checker.Equals, "test")
c.Assert(len(nr.Containers), checker.Equals, 0)
// run another container
out, _ = dockerCmd(c, "run", "-d", "--net", "test", "--name", "test2", "busybox", "top")
c.Assert(waitRun("test2"), check.IsNil)
containerID = strings.TrimSpace(out)
nr = getNwResource(c, "test")
c.Assert(nr.Name, checker.Equals, "test")
c.Assert(len(nr.Containers), checker.Equals, 1)
// force disconnect the container to the test network
dockerCmd(c, "network", "disconnect", "-f", "test", containerID)
nr = getNwResource(c, "test")
c.Assert(nr.Name, checker.Equals, "test")
c.Assert(len(nr.Containers), checker.Equals, 0)
dockerCmd(c, "network", "rm", "test")
assertNwNotAvailable(c, "test")
}
func (s *DockerNetworkSuite) TestDockerNetworkIPAMMultipleNetworks(c *check.C) {
testRequires(c, SameHostDaemon)
// test0 bridge network
dockerCmd(c, "network", "create", "--subnet=192.168.0.0/16", "test1")
assertNwIsAvailable(c, "test1")
// test2 bridge network does not overlap
dockerCmd(c, "network", "create", "--subnet=192.169.0.0/16", "test2")
assertNwIsAvailable(c, "test2")
// for networks w/o ipam specified, docker will choose proper non-overlapping subnets
dockerCmd(c, "network", "create", "test3")
assertNwIsAvailable(c, "test3")
dockerCmd(c, "network", "create", "test4")
assertNwIsAvailable(c, "test4")
dockerCmd(c, "network", "create", "test5")
assertNwIsAvailable(c, "test5")
// test network with multiple subnets
// bridge network doesn't support multiple subnets. hence, use a dummy driver that supports
dockerCmd(c, "network", "create", "-d", dummyNetworkDriver, "--subnet=192.170.0.0/16", "--subnet=192.171.0.0/16", "test6")
assertNwIsAvailable(c, "test6")
// test network with multiple subnets with valid ipam combinations
// also check same subnet across networks when the driver supports it.
dockerCmd(c, "network", "create", "-d", dummyNetworkDriver,
"--subnet=192.172.0.0/16", "--subnet=192.173.0.0/16",
"--gateway=192.172.0.100", "--gateway=192.173.0.100",
"--ip-range=192.172.1.0/24",
"--aux-address", "a=192.172.1.5", "--aux-address", "b=192.172.1.6",
"--aux-address", "c=192.173.1.5", "--aux-address", "d=192.173.1.6",
"test7")
assertNwIsAvailable(c, "test7")
// cleanup
for i := 1; i < 8; i++ {
dockerCmd(c, "network", "rm", fmt.Sprintf("test%d", i))
}
}
func (s *DockerNetworkSuite) TestDockerNetworkCustomIPAM(c *check.C) {
testRequires(c, SameHostDaemon)
// Create a bridge network using custom ipam driver
dockerCmd(c, "network", "create", "--ipam-driver", dummyIPAMDriver, "br0")
assertNwIsAvailable(c, "br0")
// Verify expected network ipam fields are there
nr := getNetworkResource(c, "br0")
c.Assert(nr.Driver, checker.Equals, "bridge")
c.Assert(nr.IPAM.Driver, checker.Equals, dummyIPAMDriver)
// remove network and exercise remote ipam driver
dockerCmd(c, "network", "rm", "br0")
assertNwNotAvailable(c, "br0")
}
func (s *DockerNetworkSuite) TestDockerNetworkIPAMOptions(c *check.C) {
testRequires(c, SameHostDaemon)
// Create a bridge network using custom ipam driver and options
dockerCmd(c, "network", "create", "--ipam-driver", dummyIPAMDriver, "--ipam-opt", "opt1=drv1", "--ipam-opt", "opt2=drv2", "br0")
assertNwIsAvailable(c, "br0")
// Verify expected network ipam options
nr := getNetworkResource(c, "br0")
opts := nr.IPAM.Options
c.Assert(opts["opt1"], checker.Equals, "drv1")
c.Assert(opts["opt2"], checker.Equals, "drv2")
}
func (s *DockerNetworkSuite) TestDockerNetworkNullIPAMDriver(c *check.C) {
testRequires(c, SameHostDaemon)
// Create a network with null ipam driver
_, _, err := dockerCmdWithError("network", "create", "-d", dummyNetworkDriver, "--ipam-driver", "null", "test000")
c.Assert(err, check.IsNil)
assertNwIsAvailable(c, "test000")
// Verify the inspect data contains the default subnet provided by the null
// ipam driver and no gateway, as the null ipam driver does not provide one
nr := getNetworkResource(c, "test000")
c.Assert(nr.IPAM.Driver, checker.Equals, "null")
c.Assert(len(nr.IPAM.Config), checker.Equals, 1)
c.Assert(nr.IPAM.Config[0].Subnet, checker.Equals, "0.0.0.0/0")
c.Assert(nr.IPAM.Config[0].Gateway, checker.Equals, "")
}
func (s *DockerNetworkSuite) TestDockerNetworkInspectDefault(c *check.C) {
nr := getNetworkResource(c, "none")
c.Assert(nr.Driver, checker.Equals, "null")
c.Assert(nr.Scope, checker.Equals, "local")
c.Assert(nr.Internal, checker.Equals, false)
c.Assert(nr.EnableIPv6, checker.Equals, false)
c.Assert(nr.IPAM.Driver, checker.Equals, "default")
c.Assert(len(nr.IPAM.Config), checker.Equals, 0)
nr = getNetworkResource(c, "host")
c.Assert(nr.Driver, checker.Equals, "host")
c.Assert(nr.Scope, checker.Equals, "local")
c.Assert(nr.Internal, checker.Equals, false)
c.Assert(nr.EnableIPv6, checker.Equals, false)
c.Assert(nr.IPAM.Driver, checker.Equals, "default")
c.Assert(len(nr.IPAM.Config), checker.Equals, 0)
nr = getNetworkResource(c, "bridge")
c.Assert(nr.Driver, checker.Equals, "bridge")
c.Assert(nr.Scope, checker.Equals, "local")
c.Assert(nr.Internal, checker.Equals, false)
c.Assert(nr.EnableIPv6, checker.Equals, false)
c.Assert(nr.IPAM.Driver, checker.Equals, "default")
c.Assert(len(nr.IPAM.Config), checker.Equals, 1)
c.Assert(nr.IPAM.Config[0].Subnet, checker.NotNil)
c.Assert(nr.IPAM.Config[0].Gateway, checker.NotNil)
}
func (s *DockerNetworkSuite) TestDockerNetworkInspectCustomUnspecified(c *check.C) {
// if unspecified, network subnet will be selected from inside preferred pool
dockerCmd(c, "network", "create", "test01")
assertNwIsAvailable(c, "test01")
nr := getNetworkResource(c, "test01")
c.Assert(nr.Driver, checker.Equals, "bridge")
c.Assert(nr.Scope, checker.Equals, "local")
c.Assert(nr.Internal, checker.Equals, false)
c.Assert(nr.EnableIPv6, checker.Equals, false)
c.Assert(nr.IPAM.Driver, checker.Equals, "default")
c.Assert(len(nr.IPAM.Config), checker.Equals, 1)
c.Assert(nr.IPAM.Config[0].Subnet, checker.NotNil)
c.Assert(nr.IPAM.Config[0].Gateway, checker.NotNil)
dockerCmd(c, "network", "rm", "test01")
assertNwNotAvailable(c, "test01")
}
func (s *DockerNetworkSuite) TestDockerNetworkInspectCustomSpecified(c *check.C) {
dockerCmd(c, "network", "create", "--driver=bridge", "--ipv6", "--subnet=fd80:24e2:f998:72d6::/64", "--subnet=172.28.0.0/16", "--ip-range=172.28.5.0/24", "--gateway=172.28.5.254", "br0")
assertNwIsAvailable(c, "br0")
nr := getNetworkResource(c, "br0")
c.Assert(nr.Driver, checker.Equals, "bridge")
c.Assert(nr.Scope, checker.Equals, "local")
c.Assert(nr.Internal, checker.Equals, false)
c.Assert(nr.EnableIPv6, checker.Equals, true)
c.Assert(nr.IPAM.Driver, checker.Equals, "default")
c.Assert(len(nr.IPAM.Config), checker.Equals, 2)
c.Assert(nr.IPAM.Config[0].Subnet, checker.Equals, "172.28.0.0/16")
c.Assert(nr.IPAM.Config[0].IPRange, checker.Equals, "172.28.5.0/24")
c.Assert(nr.IPAM.Config[0].Gateway, checker.Equals, "172.28.5.254")
c.Assert(nr.Internal, checker.False)
dockerCmd(c, "network", "rm", "br0")
assertNwNotAvailable(c, "br0")
}
func (s *DockerNetworkSuite) TestDockerNetworkIPAMInvalidCombinations(c *check.C) {
// network with ip-range out of subnet range
_, _, err := dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--ip-range=192.170.0.0/16", "test")
c.Assert(err, check.NotNil)
// network with multiple gateways for a single subnet
_, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--gateway=192.168.0.1", "--gateway=192.168.0.2", "test")
c.Assert(err, check.NotNil)
// Multiple overlapping subnets in the same network must fail
_, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.0.0/16", "--subnet=192.168.1.0/16", "test")
c.Assert(err, check.NotNil)
// overlapping subnets across networks must fail
// create a valid test0 network
dockerCmd(c, "network", "create", "--subnet=192.168.0.0/16", "test0")
assertNwIsAvailable(c, "test0")
// create an overlapping test1 network
_, _, err = dockerCmdWithError("network", "create", "--subnet=192.168.128.0/17", "test1")
c.Assert(err, check.NotNil)
dockerCmd(c, "network", "rm", "test0")
assertNwNotAvailable(c, "test0")
}
func (s *DockerNetworkSuite) TestDockerNetworkDriverOptions(c *check.C) {
testRequires(c, SameHostDaemon)
dockerCmd(c, "network", "create", "-d", dummyNetworkDriver, "-o", "opt1=drv1", "-o", "opt2=drv2", "testopt")
assertNwIsAvailable(c, "testopt")
gopts := remoteDriverNetworkRequest.Options[netlabel.GenericData]
c.Assert(gopts, checker.NotNil)
opts, ok := gopts.(map[string]interface{})
c.Assert(ok, checker.Equals, true)
c.Assert(opts["opt1"], checker.Equals, "drv1")
c.Assert(opts["opt2"], checker.Equals, "drv2")
dockerCmd(c, "network", "rm", "testopt")
assertNwNotAvailable(c, "testopt")
}
func (s *DockerNetworkSuite) TestDockerPluginV2NetworkDriver(c *check.C) {
testRequires(c, DaemonIsLinux, IsAmd64, Network)
var (
npName = "tiborvass/test-docker-netplugin"
npTag = "latest"
npNameWithTag = npName + ":" + npTag
)
_, _, err := dockerCmdWithError("plugin", "install", "--grant-all-permissions", npNameWithTag)
c.Assert(err, checker.IsNil)
out, _, err := dockerCmdWithError("plugin", "ls")
c.Assert(err, checker.IsNil)
c.Assert(out, checker.Contains, npName)
c.Assert(out, checker.Contains, npTag)
c.Assert(out, checker.Contains, "true")
dockerCmd(c, "network", "create", "-d", npNameWithTag, "v2net")
assertNwIsAvailable(c, "v2net")
dockerCmd(c, "network", "rm", "v2net")
assertNwNotAvailable(c, "v2net")
}
func (s *DockerDaemonSuite) TestDockerNetworkNoDiscoveryDefaultBridgeNetwork(c *check.C) {
testRequires(c, ExecSupport)
// On default bridge network built-in service discovery should not happen
hostsFile := "/etc/hosts"
bridgeName := "external-bridge"
bridgeIP := "192.169.255.254/24"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
s.d.StartWithBusybox(c, "--bridge", bridgeName)
defer s.d.Restart(c)
// run two containers and store first container's etc/hosts content
out, err := s.d.Cmd("run", "-d", "busybox", "top")
c.Assert(err, check.IsNil)
cid1 := strings.TrimSpace(out)
defer s.d.Cmd("stop", cid1)
hosts, err := s.d.Cmd("exec", cid1, "cat", hostsFile)
c.Assert(err, checker.IsNil)
out, err = s.d.Cmd("run", "-d", "--name", "container2", "busybox", "top")
c.Assert(err, check.IsNil)
cid2 := strings.TrimSpace(out)
// verify first container's etc/hosts file has not changed after spawning the second named container
hostsPost, err := s.d.Cmd("exec", cid1, "cat", hostsFile)
c.Assert(err, checker.IsNil)
c.Assert(string(hosts), checker.Equals, string(hostsPost),
check.Commentf("Unexpected %s change on second container creation", hostsFile))
// stop container 2 and verify first container's etc/hosts has not changed
_, err = s.d.Cmd("stop", cid2)
c.Assert(err, check.IsNil)
hostsPost, err = s.d.Cmd("exec", cid1, "cat", hostsFile)
c.Assert(err, checker.IsNil)
c.Assert(string(hosts), checker.Equals, string(hostsPost),
check.Commentf("Unexpected %s change on second container creation", hostsFile))
// but discovery is on when connecting to non default bridge network
network := "anotherbridge"
out, err = s.d.Cmd("network", "create", network)
c.Assert(err, check.IsNil, check.Commentf(out))
defer s.d.Cmd("network", "rm", network)
out, err = s.d.Cmd("network", "connect", network, cid1)
c.Assert(err, check.IsNil, check.Commentf(out))
hosts, err = s.d.Cmd("exec", cid1, "cat", hostsFile)
c.Assert(err, checker.IsNil)
hostsPost, err = s.d.Cmd("exec", cid1, "cat", hostsFile)
c.Assert(err, checker.IsNil)
c.Assert(string(hosts), checker.Equals, string(hostsPost),
check.Commentf("Unexpected %s change on second network connection", hostsFile))
}
func (s *DockerNetworkSuite) TestDockerNetworkAnonymousEndpoint(c *check.C) {
testRequires(c, ExecSupport, NotArm)
hostsFile := "/etc/hosts"
cstmBridgeNw := "custom-bridge-nw"
cstmBridgeNw1 := "custom-bridge-nw1"
dockerCmd(c, "network", "create", "-d", "bridge", cstmBridgeNw)
assertNwIsAvailable(c, cstmBridgeNw)
// run two anonymous containers and store their etc/hosts content
out, _ := dockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "busybox", "top")
cid1 := strings.TrimSpace(out)
hosts1 := readContainerFileWithExec(c, cid1, hostsFile)
out, _ = dockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "busybox", "top")
cid2 := strings.TrimSpace(out)
hosts2 := readContainerFileWithExec(c, cid2, hostsFile)
// verify first container etc/hosts file has not changed
hosts1post := readContainerFileWithExec(c, cid1, hostsFile)
c.Assert(string(hosts1), checker.Equals, string(hosts1post),
check.Commentf("Unexpected %s change on anonymous container creation", hostsFile))
// Connect the 2nd container to a new network and verify the
// first container /etc/hosts file still hasn't changed.
dockerCmd(c, "network", "create", "-d", "bridge", cstmBridgeNw1)
assertNwIsAvailable(c, cstmBridgeNw1)
dockerCmd(c, "network", "connect", cstmBridgeNw1, cid2)
hosts2 = readContainerFileWithExec(c, cid2, hostsFile)
hosts1post = readContainerFileWithExec(c, cid1, hostsFile)
c.Assert(string(hosts1), checker.Equals, string(hosts1post),
check.Commentf("Unexpected %s change on container connect", hostsFile))
// start a named container
cName := "AnyName"
out, _ = dockerCmd(c, "run", "-d", "--net", cstmBridgeNw, "--name", cName, "busybox", "top")
cid3 := strings.TrimSpace(out)
// verify that container 1 and 2 can ping the named container
dockerCmd(c, "exec", cid1, "ping", "-c", "1", cName)
dockerCmd(c, "exec", cid2, "ping", "-c", "1", cName)
// Stop named container and verify first two containers' etc/hosts file hasn't changed
dockerCmd(c, "stop", cid3)
hosts1post = readContainerFileWithExec(c, cid1, hostsFile)
c.Assert(string(hosts1), checker.Equals, string(hosts1post),
check.Commentf("Unexpected %s change on name container creation", hostsFile))
hosts2post := readContainerFileWithExec(c, cid2, hostsFile)
c.Assert(string(hosts2), checker.Equals, string(hosts2post),
check.Commentf("Unexpected %s change on name container creation", hostsFile))
// verify that container 1 and 2 can't ping the named container now
_, _, err := dockerCmdWithError("exec", cid1, "ping", "-c", "1", cName)
c.Assert(err, check.NotNil)
_, _, err = dockerCmdWithError("exec", cid2, "ping", "-c", "1", cName)
c.Assert(err, check.NotNil)
}
func (s *DockerNetworkSuite) TestDockerNetworkLinkOnDefaultNetworkOnly(c *check.C) {
// Legacy Link feature must work only on default network, and not across networks
cnt1 := "container1"
cnt2 := "container2"
network := "anotherbridge"
// Run first container on default network
dockerCmd(c, "run", "-d", "--name", cnt1, "busybox", "top")
// Create another network and run the second container on it
dockerCmd(c, "network", "create", network)
assertNwIsAvailable(c, network)
dockerCmd(c, "run", "-d", "--net", network, "--name", cnt2, "busybox", "top")
// Try launching a container on default network, linking to the first container. Must succeed
dockerCmd(c, "run", "-d", "--link", fmt.Sprintf("%s:%s", cnt1, cnt1), "busybox", "top")
// Try launching a container on default network, linking to the second container. Must fail
_, _, err := dockerCmdWithError("run", "-d", "--link", fmt.Sprintf("%s:%s", cnt2, cnt2), "busybox", "top")
c.Assert(err, checker.NotNil)
// Connect second container to default network. Now a container on default network can link to it
dockerCmd(c, "network", "connect", "bridge", cnt2)
dockerCmd(c, "run", "-d", "--link", fmt.Sprintf("%s:%s", cnt2, cnt2), "busybox", "top")
}
func (s *DockerNetworkSuite) TestDockerNetworkOverlayPortMapping(c *check.C) {
testRequires(c, SameHostDaemon)
// Verify exposed ports are present in ps output when running a container on
// a network managed by a driver which does not provide the default gateway
// for the container
nwn := "ov"
ctn := "bb"
port1 := 80
port2 := 443
expose1 := fmt.Sprintf("--expose=%d", port1)
expose2 := fmt.Sprintf("--expose=%d", port2)
dockerCmd(c, "network", "create", "-d", dummyNetworkDriver, nwn)
assertNwIsAvailable(c, nwn)
dockerCmd(c, "run", "-d", "--net", nwn, "--name", ctn, expose1, expose2, "busybox", "top")
// Check docker ps o/p for last created container reports the unpublished ports
unpPort1 := fmt.Sprintf("%d/tcp", port1)
unpPort2 := fmt.Sprintf("%d/tcp", port2)
out, _ := dockerCmd(c, "ps", "-n=1")
// Missing unpublished ports in docker ps output
c.Assert(out, checker.Contains, unpPort1)
// Missing unpublished ports in docker ps output
c.Assert(out, checker.Contains, unpPort2)
}
func (s *DockerNetworkSuite) TestDockerNetworkDriverUngracefulRestart(c *check.C) {
testRequires(c, DaemonIsLinux, NotUserNamespace, SameHostDaemon)
dnd := "dnd"
did := "did"
mux := http.NewServeMux()
server := httptest.NewServer(mux)
setupRemoteNetworkDrivers(c, mux, server.URL, dnd, did)
s.d.StartWithBusybox(c)
_, err := s.d.Cmd("network", "create", "-d", dnd, "--subnet", "1.1.1.0/24", "net1")
c.Assert(err, checker.IsNil)
_, err = s.d.Cmd("run", "-itd", "--net", "net1", "--name", "foo", "--ip", "1.1.1.10", "busybox", "sh")
c.Assert(err, checker.IsNil)
// Kill daemon and restart
c.Assert(s.d.Kill(), checker.IsNil)
server.Close()