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docker_cli_daemon_test.go
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docker_cli_daemon_test.go
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//go:build linux
// +build linux
package main
import (
"bufio"
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"encoding/json"
"fmt"
"io"
"net"
"os"
"os/exec"
"path"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"testing"
"time"
"github.com/cloudflare/cfssl/helpers"
"github.com/creack/pty"
"github.com/docker/docker/api/types"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/cli"
"github.com/docker/docker/integration-cli/cli/build"
"github.com/docker/docker/integration-cli/daemon"
"github.com/docker/docker/libnetwork/iptables"
"github.com/docker/docker/opts"
testdaemon "github.com/docker/docker/testutil/daemon"
units "github.com/docker/go-units"
"github.com/docker/libtrust"
"github.com/moby/sys/mount"
"golang.org/x/sys/unix"
"gotest.tools/v3/assert"
"gotest.tools/v3/icmd"
"gotest.tools/v3/poll"
)
const containerdSocket = "/var/run/docker/containerd/containerd.sock"
// TestLegacyDaemonCommand test starting docker daemon using "deprecated" docker daemon
// command. Remove this test when we remove this.
func (s *DockerDaemonSuite) TestLegacyDaemonCommand(c *testing.T) {
cmd := exec.Command(dockerBinary, "daemon", "--storage-driver=vfs", "--debug")
err := cmd.Start()
go cmd.Wait()
assert.NilError(c, err, "could not start daemon using 'docker daemon'")
assert.NilError(c, cmd.Process.Kill())
}
func (s *DockerDaemonSuite) TestDaemonRestartWithRunningContainersPorts(c *testing.T) {
s.d.StartWithBusybox(c)
cli.Docker(
cli.Args("run", "-d", "--name", "top1", "-p", "1234:80", "--restart", "always", "busybox:latest", "top"),
cli.Daemon(s.d),
).Assert(c, icmd.Success)
cli.Docker(
cli.Args("run", "-d", "--name", "top2", "-p", "80", "busybox:latest", "top"),
cli.Daemon(s.d),
).Assert(c, icmd.Success)
testRun := func(m map[string]bool, prefix string) {
var format string
for cont, shouldRun := range m {
out := cli.Docker(cli.Args("ps"), cli.Daemon(s.d)).Assert(c, icmd.Success).Combined()
if shouldRun {
format = "%scontainer %q is not running"
} else {
format = "%scontainer %q is running"
}
if shouldRun != strings.Contains(out, cont) {
c.Fatalf(format, prefix, cont)
}
}
}
testRun(map[string]bool{"top1": true, "top2": true}, "")
s.d.Restart(c)
testRun(map[string]bool{"top1": true, "top2": false}, "After daemon restart: ")
}
func (s *DockerDaemonSuite) TestDaemonRestartWithVolumesRefs(c *testing.T) {
s.d.StartWithBusybox(c)
if out, err := s.d.Cmd("run", "--name", "volrestarttest1", "-v", "/foo", "busybox"); err != nil {
c.Fatal(err, out)
}
s.d.Restart(c)
if out, err := s.d.Cmd("run", "-d", "--volumes-from", "volrestarttest1", "--name", "volrestarttest2", "busybox", "top"); err != nil {
c.Fatal(err, out)
}
if out, err := s.d.Cmd("rm", "-fv", "volrestarttest2"); err != nil {
c.Fatal(err, out)
}
out, err := s.d.Cmd("inspect", "-f", "{{json .Mounts}}", "volrestarttest1")
assert.NilError(c, err, out)
if _, err := inspectMountPointJSON(out, "/foo"); err != nil {
c.Fatalf("Expected volume to exist: /foo, error: %v\n", err)
}
}
// #11008
func (s *DockerDaemonSuite) TestDaemonRestartUnlessStopped(c *testing.T) {
s.d.StartWithBusybox(c)
out, err := s.d.Cmd("run", "-d", "--name", "top1", "--restart", "always", "busybox:latest", "top")
assert.NilError(c, err, "run top1: %v", out)
out, err = s.d.Cmd("run", "-d", "--name", "top2", "--restart", "unless-stopped", "busybox:latest", "top")
assert.NilError(c, err, "run top2: %v", out)
out, err = s.d.Cmd("run", "-d", "--name", "exit", "--restart", "unless-stopped", "busybox:latest", "false")
assert.NilError(c, err, "run exit: %v", out)
testRun := func(m map[string]bool, prefix string) {
var format string
for name, shouldRun := range m {
out, err := s.d.Cmd("ps")
assert.Assert(c, err == nil, "run ps: %v", out)
if shouldRun {
format = "%scontainer %q is not running"
} else {
format = "%scontainer %q is running"
}
assert.Equal(c, strings.Contains(out, name), shouldRun, fmt.Sprintf(format, prefix, name))
}
}
// both running
testRun(map[string]bool{"top1": true, "top2": true, "exit": true}, "")
out, err = s.d.Cmd("stop", "exit")
assert.NilError(c, err, out)
out, err = s.d.Cmd("stop", "top1")
assert.NilError(c, err, out)
out, err = s.d.Cmd("stop", "top2")
assert.NilError(c, err, out)
// both stopped
testRun(map[string]bool{"top1": false, "top2": false, "exit": false}, "")
s.d.Restart(c)
// restart=always running
testRun(map[string]bool{"top1": true, "top2": false, "exit": false}, "After daemon restart: ")
out, err = s.d.Cmd("start", "top2")
assert.NilError(c, err, "start top2: %v", out)
out, err = s.d.Cmd("start", "exit")
assert.NilError(c, err, "start exit: %v", out)
s.d.Restart(c)
// both running
testRun(map[string]bool{"top1": true, "top2": true, "exit": true}, "After second daemon restart: ")
}
func (s *DockerDaemonSuite) TestDaemonRestartOnFailure(c *testing.T) {
s.d.StartWithBusybox(c)
out, err := s.d.Cmd("run", "-d", "--name", "test1", "--restart", "on-failure:3", "busybox:latest", "false")
assert.NilError(c, err, "run top1: %v", out)
// wait test1 to stop
hostArgs := []string{"--host", s.d.Sock()}
err = waitInspectWithArgs("test1", "{{.State.Running}} {{.State.Restarting}}", "false false", 10*time.Second, hostArgs...)
assert.NilError(c, err, "test1 should exit but not")
// record last start time
out, err = s.d.Cmd("inspect", "-f={{.State.StartedAt}}", "test1")
assert.NilError(c, err, "out: %v", out)
lastStartTime := out
s.d.Restart(c)
// test1 shouldn't restart at all
err = waitInspectWithArgs("test1", "{{.State.Running}} {{.State.Restarting}}", "false false", 0, hostArgs...)
assert.NilError(c, err, "test1 should exit but not")
// make sure test1 isn't restarted when daemon restart
// if "StartAt" time updates, means test1 was once restarted.
out, err = s.d.Cmd("inspect", "-f={{.State.StartedAt}}", "test1")
assert.NilError(c, err, "out: %v", out)
assert.Equal(c, out, lastStartTime, "test1 shouldn't start after daemon restarts")
}
func (s *DockerDaemonSuite) TestDaemonStartIptablesFalse(c *testing.T) {
s.d.Start(c, "--iptables=false")
}
// Make sure we cannot shrink base device at daemon restart.
func (s *DockerDaemonSuite) TestDaemonRestartWithInvalidBasesize(c *testing.T) {
testRequires(c, Devicemapper)
s.d.Start(c)
oldBasesizeBytes := getBaseDeviceSize(c, s.d)
var newBasesizeBytes int64 = 1073741824 // 1GB in bytes
if newBasesizeBytes < oldBasesizeBytes {
err := s.d.RestartWithError("--storage-opt", fmt.Sprintf("dm.basesize=%d", newBasesizeBytes))
assert.Assert(c, err != nil, "daemon should not have started as new base device size is less than existing base device size: %v", err)
// 'err != nil' is expected behaviour, no new daemon started,
// so no need to stop daemon.
if err != nil {
return
}
}
s.d.Stop(c)
}
// Make sure we can grow base device at daemon restart.
func (s *DockerDaemonSuite) TestDaemonRestartWithIncreasedBasesize(c *testing.T) {
testRequires(c, Devicemapper)
s.d.Start(c)
oldBasesizeBytes := getBaseDeviceSize(c, s.d)
var newBasesizeBytes int64 = 53687091200 // 50GB in bytes
if newBasesizeBytes < oldBasesizeBytes {
c.Skip(fmt.Sprintf("New base device size (%v) must be greater than (%s)", units.HumanSize(float64(newBasesizeBytes)), units.HumanSize(float64(oldBasesizeBytes))))
}
err := s.d.RestartWithError("--storage-opt", fmt.Sprintf("dm.basesize=%d", newBasesizeBytes))
assert.Assert(c, err == nil, "we should have been able to start the daemon with increased base device size: %v", err)
basesizeAfterRestart := getBaseDeviceSize(c, s.d)
newBasesize, err := convertBasesize(newBasesizeBytes)
assert.Assert(c, err == nil, "Error in converting base device size: %v", err)
assert.Equal(c, newBasesize, basesizeAfterRestart, "Basesize passed is not equal to Basesize set")
s.d.Stop(c)
}
func getBaseDeviceSize(c *testing.T, d *daemon.Daemon) int64 {
info := d.Info(c)
for _, statusLine := range info.DriverStatus {
key, value := statusLine[0], statusLine[1]
if key == "Base Device Size" {
return parseDeviceSize(c, value)
}
}
c.Fatal("failed to parse Base Device Size from info")
return int64(0)
}
func parseDeviceSize(c *testing.T, raw string) int64 {
size, err := units.RAMInBytes(strings.TrimSpace(raw))
assert.NilError(c, err)
return size
}
func convertBasesize(basesizeBytes int64) (int64, error) {
basesize := units.HumanSize(float64(basesizeBytes))
basesize = strings.Trim(basesize, " ")[:len(basesize)-3]
basesizeFloat, err := strconv.ParseFloat(strings.Trim(basesize, " "), 64)
if err != nil {
return 0, err
}
return int64(basesizeFloat) * 1024 * 1024 * 1024, nil
}
// Issue #8444: If docker0 bridge is modified (intentionally or unintentionally) and
// no longer has an IP associated, we should gracefully handle that case and associate
// an IP with it rather than fail daemon start
func (s *DockerDaemonSuite) TestDaemonStartBridgeWithoutIPAssociation(c *testing.T) {
// rather than depending on brctl commands to verify docker0 is created and up
// let's start the daemon and stop it, and then make a modification to run the
// actual test
s.d.Start(c)
s.d.Stop(c)
// now we will remove the ip from docker0 and then try starting the daemon
icmd.RunCommand("ip", "addr", "flush", "dev", "docker0").Assert(c, icmd.Success)
if err := s.d.StartWithError(); err != nil {
warning := "**WARNING: Docker bridge network in bad state--delete docker0 bridge interface to fix"
c.Fatalf("Could not start daemon when docker0 has no IP address: %v\n%s", err, warning)
}
}
func (s *DockerDaemonSuite) TestDaemonIptablesClean(c *testing.T) {
s.d.StartWithBusybox(c)
if out, err := s.d.Cmd("run", "-d", "--name", "top", "-p", "80", "busybox:latest", "top"); err != nil {
c.Fatalf("Could not run top: %s, %v", out, err)
}
ipTablesSearchString := "tcp dpt:80"
// get output from iptables with container running
verifyIPTablesContains(c, ipTablesSearchString)
s.d.Stop(c)
// get output from iptables after restart
verifyIPTablesDoesNotContains(c, ipTablesSearchString)
}
func (s *DockerDaemonSuite) TestDaemonIptablesCreate(c *testing.T) {
s.d.StartWithBusybox(c)
if out, err := s.d.Cmd("run", "-d", "--name", "top", "--restart=always", "-p", "80", "busybox:latest", "top"); err != nil {
c.Fatalf("Could not run top: %s, %v", out, err)
}
// get output from iptables with container running
ipTablesSearchString := "tcp dpt:80"
verifyIPTablesContains(c, ipTablesSearchString)
s.d.Restart(c)
// make sure the container is not running
runningOut, err := s.d.Cmd("inspect", "--format={{.State.Running}}", "top")
if err != nil {
c.Fatalf("Could not inspect on container: %s, %v", runningOut, err)
}
if strings.TrimSpace(runningOut) != "true" {
c.Fatalf("Container should have been restarted after daemon restart. Status running should have been true but was: %q", strings.TrimSpace(runningOut))
}
// get output from iptables after restart
verifyIPTablesContains(c, ipTablesSearchString)
}
func verifyIPTablesContains(c *testing.T, ipTablesSearchString string) {
result := icmd.RunCommand("iptables", "-nvL")
result.Assert(c, icmd.Success)
if !strings.Contains(result.Combined(), ipTablesSearchString) {
c.Fatalf("iptables output should have contained %q, but was %q", ipTablesSearchString, result.Combined())
}
}
func verifyIPTablesDoesNotContains(c *testing.T, ipTablesSearchString string) {
result := icmd.RunCommand("iptables", "-nvL")
result.Assert(c, icmd.Success)
if strings.Contains(result.Combined(), ipTablesSearchString) {
c.Fatalf("iptables output should not have contained %q, but was %q", ipTablesSearchString, result.Combined())
}
}
// TestDaemonIPv6Enabled checks that when the daemon is started with --ipv6=true that the docker0 bridge
// has the fe80::1 address and that a container is assigned a link-local address
func (s *DockerDaemonSuite) TestDaemonIPv6Enabled(c *testing.T) {
testRequires(c, IPv6)
setupV6(c)
defer teardownV6(c)
s.d.StartWithBusybox(c, "--ipv6")
iface, err := net.InterfaceByName("docker0")
if err != nil {
c.Fatalf("Error getting docker0 interface: %v", err)
}
addrs, err := iface.Addrs()
if err != nil {
c.Fatalf("Error getting addresses for docker0 interface: %v", err)
}
var found bool
expected := "fe80::1/64"
for i := range addrs {
if addrs[i].String() == expected {
found = true
break
}
}
if !found {
c.Fatalf("Bridge does not have an IPv6 Address")
}
if out, err := s.d.Cmd("run", "-itd", "--name=ipv6test", "busybox:latest"); err != nil {
c.Fatalf("Could not run container: %s, %v", out, err)
}
out, err := s.d.Cmd("inspect", "--format", "'{{.NetworkSettings.Networks.bridge.LinkLocalIPv6Address}}'", "ipv6test")
if err != nil {
c.Fatalf("Error inspecting container: %s, %v", out, err)
}
out = strings.Trim(out, " \r\n'")
if ip := net.ParseIP(out); ip == nil {
c.Fatalf("Container should have a link-local IPv6 address")
}
out, err = s.d.Cmd("inspect", "--format", "'{{.NetworkSettings.Networks.bridge.GlobalIPv6Address}}'", "ipv6test")
if err != nil {
c.Fatalf("Error inspecting container: %s, %v", out, err)
}
out = strings.Trim(out, " \r\n'")
if ip := net.ParseIP(out); ip != nil {
c.Fatalf("Container should not have a global IPv6 address: %v", out)
}
}
// TestDaemonIPv6FixedCIDR checks that when the daemon is started with --ipv6=true and a fixed CIDR
// that running containers are given a link-local and global IPv6 address
func (s *DockerDaemonSuite) TestDaemonIPv6FixedCIDR(c *testing.T) {
// IPv6 setup is messing with local bridge address.
testRequires(c, testEnv.IsLocalDaemon)
// Delete the docker0 bridge if its left around from previous daemon. It has to be recreated with
// ipv6 enabled
deleteInterface(c, "docker0")
s.d.StartWithBusybox(c, "--ipv6", "--fixed-cidr-v6=2001:db8:2::/64", "--default-gateway-v6=2001:db8:2::100")
out, err := s.d.Cmd("run", "-d", "--name=ipv6test", "busybox:latest", "top")
assert.NilError(c, err, "Could not run container: %s, %v", out, err)
out, err = s.d.Cmd("inspect", "--format", "{{.NetworkSettings.Networks.bridge.GlobalIPv6Address}}", "ipv6test")
assert.NilError(c, err, out)
out = strings.Trim(out, " \r\n'")
ip := net.ParseIP(out)
assert.Assert(c, ip != nil, "Container should have a global IPv6 address")
out, err = s.d.Cmd("inspect", "--format", "{{.NetworkSettings.Networks.bridge.IPv6Gateway}}", "ipv6test")
assert.NilError(c, err, out)
assert.Equal(c, strings.Trim(out, " \r\n'"), "2001:db8:2::100", "Container should have a global IPv6 gateway")
}
// TestDaemonIPv6FixedCIDRAndMac checks that when the daemon is started with ipv6 fixed CIDR
// the running containers are given an IPv6 address derived from the MAC address and the ipv6 fixed CIDR
func (s *DockerDaemonSuite) TestDaemonIPv6FixedCIDRAndMac(c *testing.T) {
// IPv6 setup is messing with local bridge address.
testRequires(c, testEnv.IsLocalDaemon)
// Delete the docker0 bridge if its left around from previous daemon. It has to be recreated with
// ipv6 enabled
deleteInterface(c, "docker0")
s.d.StartWithBusybox(c, "--ipv6", "--fixed-cidr-v6=2001:db8:1::/64")
out, err := s.d.Cmd("run", "-d", "--name=ipv6test", "--mac-address", "AA:BB:CC:DD:EE:FF", "busybox", "top")
assert.NilError(c, err, out)
out, err = s.d.Cmd("inspect", "--format", "{{.NetworkSettings.Networks.bridge.GlobalIPv6Address}}", "ipv6test")
assert.NilError(c, err, out)
assert.Equal(c, strings.Trim(out, " \r\n'"), "2001:db8:1::aabb:ccdd:eeff")
}
// TestDaemonIPv6HostMode checks that when the running a container with
// network=host the host ipv6 addresses are not removed
func (s *DockerDaemonSuite) TestDaemonIPv6HostMode(c *testing.T) {
testRequires(c, testEnv.IsLocalDaemon)
deleteInterface(c, "docker0")
s.d.StartWithBusybox(c, "--ipv6", "--fixed-cidr-v6=2001:db8:2::/64")
out, err := s.d.Cmd("run", "-d", "--name=hostcnt", "--network=host", "busybox:latest", "top")
assert.NilError(c, err, "Could not run container: %s, %v", out, err)
out, err = s.d.Cmd("exec", "hostcnt", "ip", "-6", "addr", "show", "docker0")
assert.NilError(c, err, out)
assert.Assert(c, strings.Contains(strings.Trim(out, " \r\n'"), "2001:db8:2::1"))
}
func (s *DockerDaemonSuite) TestDaemonLogLevelWrong(c *testing.T) {
assert.Assert(c, s.d.StartWithError("--log-level=bogus") != nil, "Daemon shouldn't start with wrong log level")
}
func (s *DockerDaemonSuite) TestDaemonLogLevelDebug(c *testing.T) {
s.d.Start(c, "--log-level=debug")
content, err := s.d.ReadLogFile()
assert.NilError(c, err)
if !strings.Contains(string(content), `level=debug`) {
c.Fatalf(`Missing level="debug" in log file:\n%s`, string(content))
}
}
func (s *DockerDaemonSuite) TestDaemonLogLevelFatal(c *testing.T) {
// we creating new daemons to create new logFile
s.d.Start(c, "--log-level=fatal")
content, err := s.d.ReadLogFile()
assert.NilError(c, err)
if strings.Contains(string(content), `level=debug`) {
c.Fatalf(`Should not have level="debug" in log file:\n%s`, string(content))
}
}
func (s *DockerDaemonSuite) TestDaemonFlagD(c *testing.T) {
s.d.Start(c, "-D")
content, err := s.d.ReadLogFile()
assert.NilError(c, err)
if !strings.Contains(string(content), `level=debug`) {
c.Fatalf(`Should have level="debug" in log file using -D:\n%s`, string(content))
}
}
func (s *DockerDaemonSuite) TestDaemonFlagDebug(c *testing.T) {
s.d.Start(c, "--debug")
content, err := s.d.ReadLogFile()
assert.NilError(c, err)
if !strings.Contains(string(content), `level=debug`) {
c.Fatalf(`Should have level="debug" in log file using --debug:\n%s`, string(content))
}
}
func (s *DockerDaemonSuite) TestDaemonFlagDebugLogLevelFatal(c *testing.T) {
s.d.Start(c, "--debug", "--log-level=fatal")
content, err := s.d.ReadLogFile()
assert.NilError(c, err)
if !strings.Contains(string(content), `level=debug`) {
c.Fatalf(`Should have level="debug" in log file when using both --debug and --log-level=fatal:\n%s`, string(content))
}
}
func (s *DockerDaemonSuite) TestDaemonAllocatesListeningPort(c *testing.T) {
type listener struct {
daemon string
client string
port string
}
listeningPorts := []listener{
{"0.0.0.0", "0.0.0.0", "5678"},
{"127.0.0.1", "127.0.0.1", "1234"},
{"localhost", "127.0.0.1", "1235"},
}
cmdArgs := make([]string, 0, len(listeningPorts)*2)
for _, l := range listeningPorts {
cmdArgs = append(cmdArgs, "--tls=false", "--host", fmt.Sprintf("tcp://%s:%s", l.daemon, l.port))
}
s.d.StartWithBusybox(c, cmdArgs...)
for _, l := range listeningPorts {
output, err := s.d.Cmd("run", "-p", fmt.Sprintf("%s:%s:80", l.client, l.port), "busybox", "true")
if err == nil {
c.Fatalf("Container should not start, expected port already allocated error: %q", output)
} else if !strings.Contains(output, "port is already allocated") {
c.Fatalf("Expected port is already allocated error: %q", output)
}
}
}
func (s *DockerDaemonSuite) TestDaemonKeyGeneration(c *testing.T) {
// TODO: skip or update for Windows daemon
os.Remove("/etc/docker/key.json")
s.d.Start(c)
s.d.Stop(c)
k, err := libtrust.LoadKeyFile("/etc/docker/key.json")
if err != nil {
c.Fatalf("Error opening key file")
}
kid := k.KeyID()
// Test Key ID is a valid fingerprint (e.g. QQXN:JY5W:TBXI:MK3X:GX6P:PD5D:F56N:NHCS:LVRZ:JA46:R24J:XEFF)
if len(kid) != 59 {
c.Fatalf("Bad key ID: %s", kid)
}
}
// GH#11320 - verify that the daemon exits on failure properly
// Note that this explicitly tests the conflict of {-b,--bridge} and {--bip} options as the means
// to get a daemon init failure; no other tests for -b/--bip conflict are therefore required
func (s *DockerDaemonSuite) TestDaemonExitOnFailure(c *testing.T) {
// attempt to start daemon with incorrect flags (we know -b and --bip conflict)
if err := s.d.StartWithError("--bridge", "nosuchbridge", "--bip", "1.1.1.1"); err != nil {
// verify we got the right error
if !strings.Contains(err.Error(), "daemon exited") {
c.Fatalf("Expected daemon not to start, got %v", err)
}
// look in the log and make sure we got the message that daemon is shutting down
icmd.RunCommand("grep", "failed to start daemon", s.d.LogFileName()).Assert(c, icmd.Success)
} else {
// if we didn't get an error and the daemon is running, this is a failure
c.Fatal("Conflicting options should cause the daemon to error out with a failure")
}
}
func (s *DockerDaemonSuite) TestDaemonBridgeExternal(c *testing.T) {
d := s.d
err := d.StartWithError("--bridge", "nosuchbridge")
assert.ErrorContains(c, err, "", `--bridge option with an invalid bridge should cause the daemon to fail`)
defer d.Restart(c)
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge1"
bridgeIP := "192.169.1.1/24"
_, bridgeIPNet, _ := net.ParseCIDR(bridgeIP)
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
d.StartWithBusybox(c, "--bridge", bridgeName)
ipTablesSearchString := bridgeIPNet.String()
icmd.RunCommand("iptables", "-t", "nat", "-nvL").Assert(c, icmd.Expected{
Out: ipTablesSearchString,
})
out, err := d.Cmd("run", "-d", "--name", "ExtContainer", "busybox", "top")
assert.NilError(c, err, out)
containerIP := d.FindContainerIP(c, "ExtContainer")
ip := net.ParseIP(containerIP)
assert.Assert(c, bridgeIPNet.Contains(ip), "Container IP-Address must be in the same subnet range : %s", containerIP)
}
func (s *DockerDaemonSuite) TestDaemonBridgeNone(c *testing.T) {
// start with bridge none
d := s.d
d.StartWithBusybox(c, "--bridge", "none")
defer d.Restart(c)
// verify docker0 iface is not there
icmd.RunCommand("ifconfig", "docker0").Assert(c, icmd.Expected{
ExitCode: 1,
Error: "exit status 1",
Err: "Device not found",
})
// verify default "bridge" network is not there
out, err := d.Cmd("network", "inspect", "bridge")
assert.ErrorContains(c, err, "", `"bridge" network should not be present if daemon started with --bridge=none`)
assert.Assert(c, strings.Contains(out, "No such network"))
}
func createInterface(c *testing.T, ifType string, ifName string, ipNet string) {
icmd.RunCommand("ip", "link", "add", "name", ifName, "type", ifType).Assert(c, icmd.Success)
icmd.RunCommand("ifconfig", ifName, ipNet, "up").Assert(c, icmd.Success)
}
func deleteInterface(c *testing.T, ifName string) {
icmd.RunCommand("ip", "link", "delete", ifName).Assert(c, icmd.Success)
icmd.RunCommand("iptables", "-t", "nat", "--flush").Assert(c, icmd.Success)
icmd.RunCommand("iptables", "--flush").Assert(c, icmd.Success)
}
func (s *DockerDaemonSuite) TestDaemonBridgeIP(c *testing.T) {
// TestDaemonBridgeIP Steps
// 1. Delete the existing docker0 Bridge
// 2. Set --bip daemon configuration and start the new Docker Daemon
// 3. Check if the bip config has taken effect using ifconfig and iptables commands
// 4. Launch a Container and make sure the IP-Address is in the expected subnet
// 5. Delete the docker0 Bridge
// 6. Restart the Docker Daemon (via deferred action)
// This Restart takes care of bringing docker0 interface back to auto-assigned IP
defaultNetworkBridge := "docker0"
deleteInterface(c, defaultNetworkBridge)
d := s.d
bridgeIP := "192.169.1.1/24"
ip, bridgeIPNet, _ := net.ParseCIDR(bridgeIP)
d.StartWithBusybox(c, "--bip", bridgeIP)
defer d.Restart(c)
ifconfigSearchString := ip.String()
icmd.RunCommand("ifconfig", defaultNetworkBridge).Assert(c, icmd.Expected{
Out: ifconfigSearchString,
})
ipTablesSearchString := bridgeIPNet.String()
icmd.RunCommand("iptables", "-t", "nat", "-nvL").Assert(c, icmd.Expected{
Out: ipTablesSearchString,
})
out, err := d.Cmd("run", "-d", "--name", "test", "busybox", "top")
assert.NilError(c, err, out)
containerIP := d.FindContainerIP(c, "test")
ip = net.ParseIP(containerIP)
assert.Equal(c, bridgeIPNet.Contains(ip), true, fmt.Sprintf("Container IP-Address must be in the same subnet range : %s", containerIP))
deleteInterface(c, defaultNetworkBridge)
}
func (s *DockerDaemonSuite) TestDaemonRestartWithBridgeIPChange(c *testing.T) {
s.d.Start(c)
defer s.d.Restart(c)
s.d.Stop(c)
// now we will change the docker0's IP and then try starting the daemon
bridgeIP := "192.169.100.1/24"
_, bridgeIPNet, _ := net.ParseCIDR(bridgeIP)
icmd.RunCommand("ifconfig", "docker0", bridgeIP).Assert(c, icmd.Success)
s.d.Start(c, "--bip", bridgeIP)
// check if the iptables contains new bridgeIP MASQUERADE rule
ipTablesSearchString := bridgeIPNet.String()
icmd.RunCommand("iptables", "-t", "nat", "-nvL").Assert(c, icmd.Expected{
Out: ipTablesSearchString,
})
}
func (s *DockerDaemonSuite) TestDaemonBridgeFixedCidr(c *testing.T) {
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge2"
bridgeIP := "192.169.1.1/24"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
args := []string{"--bridge", bridgeName, "--fixed-cidr", "192.169.1.0/30"}
d.StartWithBusybox(c, args...)
defer d.Restart(c)
for i := 0; i < 4; i++ {
cName := "Container" + strconv.Itoa(i)
out, err := d.Cmd("run", "-d", "--name", cName, "busybox", "top")
if err != nil {
assert.Assert(c, strings.Contains(out, "no available IPv4 addresses"), "Could not run a Container : %s %s", err.Error(), out)
}
}
}
func (s *DockerDaemonSuite) TestDaemonBridgeFixedCidr2(c *testing.T) {
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge3"
bridgeIP := "10.2.2.1/16"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
d.StartWithBusybox(c, "--bip", bridgeIP, "--fixed-cidr", "10.2.2.0/24")
defer s.d.Restart(c)
out, err := d.Cmd("run", "-d", "--name", "bb", "busybox", "top")
assert.NilError(c, err, out)
defer d.Cmd("stop", "bb")
out, err = d.Cmd("exec", "bb", "/bin/sh", "-c", "ifconfig eth0 | awk '/inet addr/{print substr($2,6)}'")
assert.NilError(c, err)
assert.Equal(c, out, "10.2.2.0\n")
out, err = d.Cmd("run", "--rm", "busybox", "/bin/sh", "-c", "ifconfig eth0 | awk '/inet addr/{print substr($2,6)}'")
assert.NilError(c, err, out)
assert.Equal(c, out, "10.2.2.2\n")
}
func (s *DockerDaemonSuite) TestDaemonBridgeFixedCIDREqualBridgeNetwork(c *testing.T) {
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge4"
bridgeIP := "172.27.42.1/16"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
d.StartWithBusybox(c, "--bridge", bridgeName, "--fixed-cidr", bridgeIP)
defer s.d.Restart(c)
out, err := d.Cmd("run", "-d", "busybox", "top")
assert.NilError(c, err, out)
cid1 := strings.TrimSpace(out)
defer d.Cmd("stop", cid1)
}
func (s *DockerDaemonSuite) TestDaemonDefaultGatewayIPv4Implicit(c *testing.T) {
defaultNetworkBridge := "docker0"
deleteInterface(c, defaultNetworkBridge)
d := s.d
bridgeIP := "192.169.1.1"
bridgeIPNet := fmt.Sprintf("%s/24", bridgeIP)
d.StartWithBusybox(c, "--bip", bridgeIPNet)
defer d.Restart(c)
expectedMessage := fmt.Sprintf("default via %s dev", bridgeIP)
out, err := d.Cmd("run", "busybox", "ip", "-4", "route", "list", "0/0")
assert.NilError(c, err, out)
assert.Equal(c, strings.Contains(out, expectedMessage), true, fmt.Sprintf("Implicit default gateway should be bridge IP %s, but default route was '%s'", bridgeIP, strings.TrimSpace(out)))
deleteInterface(c, defaultNetworkBridge)
}
func (s *DockerDaemonSuite) TestDaemonDefaultGatewayIPv4Explicit(c *testing.T) {
defaultNetworkBridge := "docker0"
deleteInterface(c, defaultNetworkBridge)
d := s.d
bridgeIP := "192.169.1.1"
bridgeIPNet := fmt.Sprintf("%s/24", bridgeIP)
gatewayIP := "192.169.1.254"
d.StartWithBusybox(c, "--bip", bridgeIPNet, "--default-gateway", gatewayIP)
defer d.Restart(c)
expectedMessage := fmt.Sprintf("default via %s dev", gatewayIP)
out, err := d.Cmd("run", "busybox", "ip", "-4", "route", "list", "0/0")
assert.NilError(c, err, out)
assert.Equal(c, strings.Contains(out, expectedMessage), true, fmt.Sprintf("Explicit default gateway should be %s, but default route was '%s'", gatewayIP, strings.TrimSpace(out)))
deleteInterface(c, defaultNetworkBridge)
}
func (s *DockerDaemonSuite) TestDaemonDefaultGatewayIPv4ExplicitOutsideContainerSubnet(c *testing.T) {
defaultNetworkBridge := "docker0"
deleteInterface(c, defaultNetworkBridge)
// Program a custom default gateway outside of the container subnet, daemon should accept it and start
s.d.StartWithBusybox(c, "--bip", "172.16.0.10/16", "--fixed-cidr", "172.16.1.0/24", "--default-gateway", "172.16.0.254")
deleteInterface(c, defaultNetworkBridge)
s.d.Restart(c)
}
func (s *DockerDaemonSuite) TestDaemonIP(c *testing.T) {
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
ipStr := "192.170.1.1/24"
ip, _, _ := net.ParseCIDR(ipStr)
args := []string{"--ip", ip.String()}
d.StartWithBusybox(c, args...)
defer d.Restart(c)
out, err := d.Cmd("run", "-d", "-p", "8000:8000", "busybox", "top")
assert.Assert(c, err != nil, "Running a container must fail with an invalid --ip option")
assert.Equal(c, strings.Contains(out, "Error starting userland proxy"), true)
ifName := "dummy"
createInterface(c, "dummy", ifName, ipStr)
defer deleteInterface(c, ifName)
_, err = d.Cmd("run", "-d", "-p", "8000:8000", "busybox", "top")
assert.NilError(c, err, out)
result := icmd.RunCommand("iptables", "-t", "nat", "-nvL")
result.Assert(c, icmd.Success)
regex := fmt.Sprintf("DNAT.*%s.*dpt:8000", ip.String())
matched, _ := regexp.MatchString(regex, result.Combined())
assert.Equal(c, matched, true, fmt.Sprintf("iptables output should have contained %q, but was %q", regex, result.Combined()))
}
func (s *DockerDaemonSuite) TestDaemonICCPing(c *testing.T) {
testRequires(c, bridgeNfIptables)
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge5"
bridgeIP := "192.169.1.1/24"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
d.StartWithBusybox(c, "--bridge", bridgeName, "--icc=false")
defer d.Restart(c)
result := icmd.RunCommand("iptables", "-nvL", "FORWARD")
result.Assert(c, icmd.Success)
regex := fmt.Sprintf("DROP.*all.*%s.*%s", bridgeName, bridgeName)
matched, _ := regexp.MatchString(regex, result.Combined())
assert.Equal(c, matched, true, fmt.Sprintf("iptables output should have contained %q, but was %q", regex, result.Combined()))
// Pinging another container must fail with --icc=false
pingContainers(c, d, true)
ipStr := "192.171.1.1/24"
ip, _, _ := net.ParseCIDR(ipStr)
ifName := "icc-dummy"
createInterface(c, "dummy", ifName, ipStr)
defer deleteInterface(c, ifName)
// But, Pinging external or a Host interface must succeed
pingCmd := fmt.Sprintf("ping -c 1 %s -W 1", ip.String())
runArgs := []string{"run", "--rm", "busybox", "sh", "-c", pingCmd}
out, err := d.Cmd(runArgs...)
assert.NilError(c, err, out)
}
func (s *DockerDaemonSuite) TestDaemonICCLinkExpose(c *testing.T) {
d := s.d
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge6"
bridgeIP := "192.169.1.1/24"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
d.StartWithBusybox(c, "--bridge", bridgeName, "--icc=false")
defer d.Restart(c)
result := icmd.RunCommand("iptables", "-nvL", "FORWARD")
result.Assert(c, icmd.Success)
regex := fmt.Sprintf("DROP.*all.*%s.*%s", bridgeName, bridgeName)
matched, _ := regexp.MatchString(regex, result.Combined())
assert.Equal(c, matched, true, fmt.Sprintf("iptables output should have contained %q, but was %q", regex, result.Combined()))
out, err := d.Cmd("run", "-d", "--expose", "4567", "--name", "icc1", "busybox", "nc", "-l", "-p", "4567")
assert.NilError(c, err, out)
out, err = d.Cmd("run", "--link", "icc1:icc1", "busybox", "nc", "icc1", "4567")
assert.NilError(c, err, out)
}
func (s *DockerDaemonSuite) TestDaemonLinksIpTablesRulesWhenLinkAndUnlink(c *testing.T) {
// make sure the default docker0 bridge doesn't interfere with the test,
// which may happen if it was created with the same IP range.
deleteInterface(c, "docker0")
bridgeName := "ext-bridge7"
bridgeIP := "192.169.1.1/24"
createInterface(c, "bridge", bridgeName, bridgeIP)
defer deleteInterface(c, bridgeName)
s.d.StartWithBusybox(c, "--bridge", bridgeName, "--icc=false")
defer s.d.Restart(c)
out, err := s.d.Cmd("run", "-d", "--name", "child", "--publish", "8080:80", "busybox", "top")
assert.NilError(c, err, out)
out, err = s.d.Cmd("run", "-d", "--name", "parent", "--link", "child:http", "busybox", "top")
assert.NilError(c, err, out)
childIP := s.d.FindContainerIP(c, "child")
parentIP := s.d.FindContainerIP(c, "parent")
sourceRule := []string{"-i", bridgeName, "-o", bridgeName, "-p", "tcp", "-s", childIP, "--sport", "80", "-d", parentIP, "-j", "ACCEPT"}
destinationRule := []string{"-i", bridgeName, "-o", bridgeName, "-p", "tcp", "-s", parentIP, "--dport", "80", "-d", childIP, "-j", "ACCEPT"}
iptable := iptables.GetIptable(iptables.IPv4)
if !iptable.Exists("filter", "DOCKER", sourceRule...) || !iptable.Exists("filter", "DOCKER", destinationRule...) {
c.Fatal("Iptables rules not found")
}
s.d.Cmd("rm", "--link", "parent/http")
if iptable.Exists("filter", "DOCKER", sourceRule...) || iptable.Exists("filter", "DOCKER", destinationRule...) {
c.Fatal("Iptables rules should be removed when unlink")
}
s.d.Cmd("kill", "child")
s.d.Cmd("kill", "parent")
}
func (s *DockerDaemonSuite) TestDaemonUlimitDefaults(c *testing.T) {
s.d.StartWithBusybox(c, "--default-ulimit", "nofile=42:42", "--default-ulimit", "nproc=1024:1024")
out, err := s.d.Cmd("run", "--ulimit", "nproc=2048", "--name=test", "busybox", "/bin/sh", "-c", "echo $(ulimit -n); echo $(ulimit -u)")
if err != nil {
c.Fatal(err, out)
}
outArr := strings.Split(out, "\n")
if len(outArr) < 2 {
c.Fatalf("got unexpected output: %s", out)
}
nofile := strings.TrimSpace(outArr[0])
nproc := strings.TrimSpace(outArr[1])
if nofile != "42" {
c.Fatalf("expected `ulimit -n` to be `42`, got: %s", nofile)
}
if nproc != "2048" {
c.Fatalf("expected `ulimit -u` to be 2048, got: %s", nproc)
}