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Store endpoint config on network connect to a stopped container 

Signed-off-by: Alessandro Boch <aboch@docker.com>
This commit is contained in:
Alessandro Boch 2016-02-02 17:25:28 -08:00
parent c2bf90eb59
commit 9b63e4e7f5
2 changed files with 43 additions and 1 deletions
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3
daemon/container_operations_unix.go
View File

@ -743,6 +743,9 @@ func (daemon *Daemon) ConnectToNetwork(container *container.Container, idOrName
if _, err := daemon.updateNetworkConfig(container, idOrName, endpointConfig, true); err != nil {
return err
}
if endpointConfig != nil {
container.NetworkSettings.Networks[idOrName] = endpointConfig
}
} else {
if err := daemon.connectToNetwork(container, idOrName, endpointConfig, true); err != nil {
return err

41
integration-cli/docker_cli_network_unix_test.go
View File

@ -1126,18 +1126,22 @@ func (s *DockerNetworkSuite) TestDockerNetworkConnectPreferredIP(c *check.C) {
// run a container on first network specifying the ip addresses
dockerCmd(c, "run", "-d", "--name", "c0", "--net=n0", "--ip", "172.28.99.88", "--ip6", "2001:db8:1234::9988", "busybox", "top")
c.Assert(waitRun("c0"), check.IsNil)
verifyIPAddressConfig(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988")
verifyIPAddresses(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988")
// connect the container to the second network specifying an ip addresses
dockerCmd(c, "network", "connect", "--ip", "172.30.55.44", "--ip6", "2001:db8:abcd::5544", "n1", "c0")
verifyIPAddressConfig(c, "c0", "n1", "172.30.55.44", "2001:db8:abcd::5544")
verifyIPAddresses(c, "c0", "n1", "172.30.55.44", "2001:db8:abcd::5544")
// Stop and restart the container
dockerCmd(c, "stop", "c0")
dockerCmd(c, "start", "c0")
// verify requested addresses are applied
// verify requested addresses are applied and configs are still there
verifyIPAddressConfig(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988")
verifyIPAddresses(c, "c0", "n0", "172.28.99.88", "2001:db8:1234::9988")
verifyIPAddressConfig(c, "c0", "n1", "172.30.55.44", "2001:db8:abcd::5544")
verifyIPAddresses(c, "c0", "n1", "172.30.55.44", "2001:db8:abcd::5544")
// Still it should fail to connect to the default network with a specified IP (whatever ip)
@ -1147,6 +1151,29 @@ func (s *DockerNetworkSuite) TestDockerNetworkConnectPreferredIP(c *check.C) {
}
func (s *DockerNetworkSuite) TestDockerNetworkConnectPreferredIPStoppedContainer(c *check.C) {
// create a container
dockerCmd(c, "create", "--name", "c0", "busybox", "top")
// create a network
dockerCmd(c, "network", "create", "--subnet=172.30.0.0/16", "--subnet=2001:db8:abcd::/64", "n0")
assertNwIsAvailable(c, "n0")
// connect the container to the network specifying an ip addresses
dockerCmd(c, "network", "connect", "--ip", "172.30.55.44", "--ip6", "2001:db8:abcd::5544", "n0", "c0")
verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544")
// start the container, verify config has not changed and ip addresses are assigned
dockerCmd(c, "start", "c0")
c.Assert(waitRun("c0"), check.IsNil)
verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544")
verifyIPAddresses(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544")
// stop the container and check ip config has not changed
dockerCmd(c, "stop", "c0")
verifyIPAddressConfig(c, "c0", "n0", "172.30.55.44", "2001:db8:abcd::5544")
}
func (s *DockerNetworkSuite) TestDockerNetworkUnsupportedRequiredIP(c *check.C) {
// requested IP is not supported on predefined networks
for _, mode := range []string{"none", "host", "bridge", "default"} {
@ -1175,6 +1202,18 @@ func checkUnsupportedNetworkAndIP(c *check.C, nwMode string) {
c.Assert(out, checker.Contains, runconfig.ErrUnsupportedNetworkAndIP.Error())
}
func verifyIPAddressConfig(c *check.C, cName, nwname, ipv4, ipv6 string) {
if ipv4 != "" {
out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAMConfig.IPv4Address", nwname))
c.Assert(strings.TrimSpace(out), check.Equals, ipv4)
}
if ipv6 != "" {
out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAMConfig.IPv6Address", nwname))
c.Assert(strings.TrimSpace(out), check.Equals, ipv6)
}
}
func verifyIPAddresses(c *check.C, cName, nwname, ipv4, ipv6 string) {
out := inspectField(c, cName, fmt.Sprintf("NetworkSettings.Networks.%s.IPAddress", nwname))
c.Assert(strings.TrimSpace(out), check.Equals, ipv4)