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Add Subnets info for user-defined network

Browse source 
* If user doesn't specify the subnets to create a network, it will pick
  subnets from inside preferred pool. This PR aims to inspect these subnets info

* Add integration tests for docker inspect the subnets.

* docker-py project is already synchronized.

* jenkins checks depend on https://github.com/docker/docker-py/pull/888

Fixes issue #18626

Signed-off-by: Wen Cheng Ma <wenchma@cn.ibm.com>
This commit is contained in:
Wen Cheng Ma 2015-12-28 12:56:57 +08:00
parent 954613fb24
commit 5cc672b006
8 changed files with 169 additions and 34 deletions
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28
api/server/router/network/network_routes.go
View file

@ -184,12 +184,17 @@ func buildNetworkResource(nw libnetwork.Network) *types.NetworkResource {
func buildIpamResources(r *types.NetworkResource, nw libnetwork.Network) {
id, opts, ipv4conf, ipv6conf := nw.Info().IpamConfig()
ipv4Info, ipv6Info := nw.Info().IpamInfo()
r.IPAM.Driver = id
r.IPAM.Options = opts
r.IPAM.Config = []network.IPAMConfig{}
for _, ip4 := range ipv4conf {
if ip4.PreferredPool == "" {
continue
}
iData := network.IPAMConfig{}
iData.Subnet = ip4.PreferredPool
iData.IPRange = ip4.SubPool
@ -198,7 +203,21 @@ func buildIpamResources(r *types.NetworkResource, nw libnetwork.Network) {
r.IPAM.Config = append(r.IPAM.Config, iData)
}
if len(r.IPAM.Config) == 0 {
for _, ip4Info := range ipv4Info {
iData := network.IPAMConfig{}
iData.Subnet = ip4Info.IPAMData.Pool.String()
iData.Gateway = ip4Info.IPAMData.Gateway.String()
r.IPAM.Config = append(r.IPAM.Config, iData)
}
}
hasIpv6Conf := false
for _, ip6 := range ipv6conf {
if ip6.PreferredPool == "" {
continue
}
hasIpv6Conf = true
iData := network.IPAMConfig{}
iData.Subnet = ip6.PreferredPool
iData.IPRange = ip6.SubPool
@ -206,6 +225,15 @@ func buildIpamResources(r *types.NetworkResource, nw libnetwork.Network) {
iData.AuxAddress = ip6.AuxAddresses
r.IPAM.Config = append(r.IPAM.Config, iData)
}
if !hasIpv6Conf {
for _, ip6Info := range ipv6Info {
iData := network.IPAMConfig{}
iData.Subnet = ip6Info.IPAMData.Pool.String()
iData.Gateway = ip6Info.IPAMData.Gateway.String()
r.IPAM.Config = append(r.IPAM.Config, iData)
}
}
}
func buildEndpointResource(e libnetwork.Endpoint) types.EndpointResource {

1
docs/reference/api/docker_remote_api.md
View file

@ -121,6 +121,7 @@ This section lists each version from latest to oldest. Each listing includes a
for custom IPAM plugins.
* `GET /networks/{network-id}` Now returns IPAM config options for custom IPAM plugins if any
are available.
* `GET /networks/<network-id>` now returns subnets info for user-defined networks.
### v1.21 API changes

19
docs/reference/api/docker_remote_api_v1.22.md
View file

@ -2937,7 +2937,7 @@ Status Codes:
**Example request**:
GET /networks/f2de39df4171b0dc801e8002d1d999b77256983dfc63041c0f34030aa3977566 HTTP/1.1
GET /networks/7d86d31b1478e7cca9ebed7e73aa0fdeec46c5ca29497431d3007d2d9e15ed99 HTTP/1.1
**Example response**:
@ -2946,15 +2946,16 @@ HTTP/1.1 200 OK
Content-Type: application/json
{
"Name": "bridge",
"Id": "f2de39df4171b0dc801e8002d1d999b77256983dfc63041c0f34030aa3977566",
"Name": "net01",
"Id": "7d86d31b1478e7cca9ebed7e73aa0fdeec46c5ca29497431d3007d2d9e15ed99",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Config": [
{
"Subnet": "172.17.0.0/16"
"Subnet": "172.19.0.0/16",
"Gateway": "172.19.0.1/16"
}
],
"Options": {
@ -2962,11 +2963,11 @@ Content-Type: application/json
}
},
"Containers": {
"39b69226f9d79f5634485fb236a23b2fe4e96a0a94128390a7fbbcc167065867": {
"Name": "mad_mclean",
"EndpointID": "ed2419a97c1d9954d05b46e462e7002ea552f216e9b136b80a7db8d98b442eda",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"19a4d5d687db25203351ed79d478946f861258f018fe384f229f2efa4b23513c": {
"Name": "test",
"EndpointID": "628cadb8bcb92de107b2a1e516cbffe463e321f548feb37697cce00ad694f21a",
"MacAddress": "02:42:ac:13:00:02",
"IPv4Address": "172.19.0.2/16",
"IPv6Address": ""
}
},

28
docs/reference/commandline/network_inspect.md
View file

@ -17,7 +17,7 @@ parent = "smn_cli"
-f, --format= Format the output using the given go template.
--help Print usage
Returns information about one or more networks. By default, this command renders all results in a JSON object. For example, if you connect two containers to a network:
Returns information about one or more networks. By default, this command renders all results in a JSON object. For example, if you connect two containers to the default `bridge` network:
```bash
$ sudo docker run -itd --name=container1 busybox
@ -78,6 +78,32 @@ $ sudo docker network inspect bridge
]
```
Returns the information about the user-defined network:
```bash
$ docker network create simple-network
69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a
$ docker network inspect simple-network
[
{
"Name": "simple-network",
"Id": "69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Config": [
{
"Subnet": "172.22.0.0/16",
"Gateway": "172.22.0.1/16"
}
]
},
"Containers": {},
"Options": {}
}
]
```
## Related information

17
docs/userguide/networking/dockernetworks.md
View file

@ -305,19 +305,22 @@ features and some old features that aren't available.
```
$ docker network create --driver bridge isolated_nw
c5ee82f76de30319c75554a57164c682e7372d2c694fec41e42ac3b77e570f6b
1196a4c5af43a21ae38ef34515b6af19236a3fc48122cf585e3f3054d509679b
$ docker network inspect isolated_nw
[
{
"Name": "isolated_nw",
"Id": "c5ee82f76de30319c75554a57164c682e7372d2c694fec41e42ac3b77e570f6b",
"Id": "1196a4c5af43a21ae38ef34515b6af19236a3fc48122cf585e3f3054d509679b",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Config": [
{}
{
"Subnet": "172.21.0.0/16",
"Gateway": "172.21.0.1/16"
}
]
},
"Containers": {},
@ -338,13 +341,13 @@ After you create the network, you can launch containers on it using the `docker
```
$ docker run --net=isolated_nw -itd --name=container3 busybox
885b7b4f792bae534416c95caa35ba272f201fa181e18e59beba0c80d7d77c1d
8c1a0a5be480921d669a073393ade66a3fc49933f08bcc5515b37b8144f6d47c
$ docker network inspect isolated_nw
[
{
"Name": "isolated_nw",
"Id": "c5ee82f76de30319c75554a57164c682e7372d2c694fec41e42ac3b77e570f6b",
"Id": "1196a4c5af43a21ae38ef34515b6af19236a3fc48122cf585e3f3054d509679b",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
@ -354,8 +357,8 @@ $ docker network inspect isolated_nw
]
},
"Containers": {
"885b7b4f792bae534416c95caa35ba272f201fa181e18e59beba0c80d7d77c1d": {
"EndpointID": "514e1b419074397ea92bcfaa6698d17feb62db49d1320a27393b853ec65319c3",
"8c1a0a5be480921d669a073393ade66a3fc49933f08bcc5515b37b8144f6d47c": {
"EndpointID": "93b2db4a9b9a997beb912d28bcfc117f7b0eb924ff91d48cfa251d473e6a9b08",
"MacAddress": "02:42:ac:15:00:02",
"IPv4Address": "172.21.0.2/16",
"IPv6Address": ""

18
docs/userguide/networking/work-with-networks.md
View file

@ -36,18 +36,21 @@ A `bridge` network resides on a single host running an instance of Docker Engine
```bash
$ docker network create simple-network
de792b8258895cf5dc3b43835e9d61a9803500b991654dacb1f4f0546b1c88f8
69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a
$ docker network inspect simple-network
[
{
"Name": "simple-network",
"Id": "de792b8258895cf5dc3b43835e9d61a9803500b991654dacb1f4f0546b1c88f8",
"Id": "69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Config": [
{}
{
"Subnet": "172.22.0.0/16",
"Gateway": "172.22.0.1/16"
}
]
},
"Containers": {},
@ -134,7 +137,8 @@ $ docker network inspect isolated_nw
"Driver": "default",
"Config": [
{
"Subnet": "172.25.0.0/16"
"Subnet": "172.21.0.0/16",
"Gateway": "172.21.0.1/16"
}
]
},
@ -662,7 +666,8 @@ $ docker network inspect isolated_nw
"Driver": "default",
"Config": [
{
"Subnet": "172.25.0.0/16"
"Subnet": "172.21.0.0/16",
"Gateway": "172.21.0.1/16"
}
]
},
@ -746,7 +751,8 @@ docker network inspect isolated_nw
"Driver": "default",
"Config": [
{
"Subnet": "172.25.0.0/16"
"Subnet": "172.21.0.0/16",
"Gateway": "172.21.0.1/16"
}
]
},

63
integration-cli/docker_cli_network_unix_test.go
View file

@ -282,11 +282,11 @@ func (s *DockerNetworkSuite) TestDockerNetworkLsFilter(c *check.C) {
defer func() {
dockerCmd(c, "network", "rm", "dev")
}()
containerID := strings.TrimSpace(out)
networkID := strings.TrimSpace(out)
// filter with partial ID and partial name
// only show 'bridge' and 'dev' network
out, _ = dockerCmd(c, "network", "ls", "-f", "id="+containerID[0:5], "-f", "name=dge")
out, _ = dockerCmd(c, "network", "ls", "-f", "id="+networkID[0:5], "-f", "name=dge")
assertNwList(c, out, []string{"dev", "bridge"})
// only show built-in network (bridge, none, host)
@ -324,10 +324,11 @@ func (s *DockerSuite) TestDockerNetworkDeleteMultiple(c *check.C) {
dockerCmd(c, "network", "create", "testDelMulti2")
assertNwIsAvailable(c, "testDelMulti2")
out, _ := dockerCmd(c, "run", "-d", "--net", "testDelMulti2", "busybox", "top")
waitRun(strings.TrimSpace(out))
containerID := strings.TrimSpace(out)
waitRun(containerID)
// delete three networks at the same time, since testDelMulti2
// contains active container, it's deletion should fail.
// 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))
@ -335,7 +336,7 @@ func (s *DockerSuite) TestDockerNetworkDeleteMultiple(c *check.C) {
c.Assert(out, checker.Contains, "has active endpoints")
assertNwNotAvailable(c, "testDelMulti0")
assertNwNotAvailable(c, "testDelMulti1")
// testDelMulti2 can't be deleted, so it should exists
// testDelMulti2 can't be deleted, so it should exist
assertNwIsAvailable(c, "testDelMulti2")
}
@ -535,8 +536,46 @@ func (s *DockerNetworkSuite) TestDockerNetworkIpamOptions(c *check.C) {
c.Assert(opts["opt2"], checker.Equals, "drv2")
}
func (s *DockerNetworkSuite) TestDockerNetworkInspect(c *check.C) {
// if unspecified, network gateway will be selected from inside preferred pool
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.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.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.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.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", "--subnet=172.28.0.0/16", "--ip-range=172.28.5.0/24", "--gateway=172.28.5.254", "br0")
assertNwIsAvailable(c, "br0")
@ -549,6 +588,7 @@ func (s *DockerNetworkSuite) TestDockerNetworkInspect(c *check.C) {
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")
dockerCmd(c, "network", "rm", "br0")
assertNwNotAvailable(c, "test01")
}
func (s *DockerNetworkSuite) TestDockerNetworkIpamInvalidCombinations(c *check.C) {
@ -572,6 +612,7 @@ func (s *DockerNetworkSuite) TestDockerNetworkIpamInvalidCombinations(c *check.C
_, _, 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) {
@ -584,6 +625,7 @@ func (s *DockerNetworkSuite) TestDockerNetworkDriverOptions(c *check.C) {
c.Assert(opts["opt1"], checker.Equals, "drv1")
c.Assert(opts["opt2"], checker.Equals, "drv2")
dockerCmd(c, "network", "rm", "testopt")
assertNwNotAvailable(c, "testopt")
}
@ -818,7 +860,7 @@ func connectContainerToNetworks(c *check.C, d *Daemon, cName string, nws []strin
out, err := d.Cmd("run", "-d", "--name", cName, "busybox", "top")
c.Assert(err, checker.IsNil, check.Commentf(out))
// Attach the container to other three networks
// Attach the container to other networks
for _, nw := range nws {
out, err = d.Cmd("network", "create", nw)
c.Assert(err, checker.IsNil, check.Commentf(out))
@ -828,7 +870,7 @@ func connectContainerToNetworks(c *check.C, d *Daemon, cName string, nws []strin
}
func verifyContainerIsConnectedToNetworks(c *check.C, d *Daemon, cName string, nws []string) {
// Verify container is connected to all three networks
// Verify container is connected to all the networks
for _, nw := range nws {
out, err := d.Cmd("inspect", "-f", fmt.Sprintf("{{.NetworkSettings.Networks.%s}}", nw), cName)
c.Assert(err, checker.IsNil, check.Commentf(out))
@ -878,7 +920,8 @@ func (s *DockerNetworkSuite) TestDockerNetworkMultipleNetworksUngracefulDaemonRe
func (s *DockerNetworkSuite) TestDockerNetworkRunNetByID(c *check.C) {
out, _ := dockerCmd(c, "network", "create", "one")
dockerCmd(c, "run", "-d", "--net", strings.TrimSpace(out), "busybox", "top")
containerOut, _, err := dockerCmdWithError("run", "-d", "--net", strings.TrimSpace(out), "busybox", "top")
c.Assert(err, checker.IsNil, check.Commentf(containerOut))
}
func (s *DockerNetworkSuite) TestDockerNetworkHostModeUngracefulDaemonRestart(c *check.C) {

29
man/docker-network-inspect.1.md
View file

@ -12,7 +12,7 @@ NETWORK [NETWORK...]
# DESCRIPTION
Returns information about one or more networks. By default, this command renders all results in a JSON object. For example, if you connect two containers to a network:
Returns information about one or more networks. By default, this command renders all results in a JSON object. For example, if you connect two containers to the default `bridge` network:
```bash
$ sudo docker run -itd --name=container1 busybox
@ -73,6 +73,33 @@ $ sudo docker network inspect bridge
]
```
Returns the information about the user-defined network:
```bash
$ docker network create simple-network
69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a
$ docker network inspect simple-network
[
{
"Name": "simple-network",
"Id": "69568e6336d8c96bbf57869030919f7c69524f71183b44d80948bd3927c87f6a",
"Scope": "local",
"Driver": "bridge",
"IPAM": {
"Driver": "default",
"Config": [
{
"Subnet": "172.22.0.0/16",
"Gateway": "172.22.0.1/16"
}
]
},
"Containers": {},
"Options": {}
}
]
```
# OPTIONS
**-f**, **--format**=""
Format the output using the given go template.