![]() Network DB is a network scoped gossip database built on top of hashicorp/memberlist providing an eventually consistent state store. It limits the scope of the gossip and periodic bulk syncing for table entries to only the nodes which participate in the network to which the gossip belongs. This designs make the gossip layer scale better and only consumes resources for the network state that the node participates in. Since the complete state for a network is maintained by all nodes participating in the network, all nodes will eventually converge to the same state. NetworkDB also provides facilities for the users of the package to watch on any table (or all tables) and get notified if there are state changes of interest that happened anywhere in the cluster when that state change eventually finds it's way to the watcher's node. Signed-off-by: Jana Radhakrishnan <mrjana@docker.com> |
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.. | ||
api | ||
bitseq | ||
client | ||
cmd | ||
config | ||
datastore | ||
discoverapi | ||
docs | ||
driverapi | ||
drivers | ||
etchosts | ||
Godeps | ||
hostdiscovery | ||
idm | ||
ipam | ||
ipamapi | ||
ipams | ||
ipamutils | ||
iptables | ||
netlabel | ||
netutils | ||
networkdb | ||
ns | ||
options | ||
osl | ||
portallocator | ||
portmapper | ||
resolvconf | ||
test/integration | ||
testutils | ||
types | ||
.dockerignore | ||
.gitignore | ||
CHANGELOG.md | ||
circle.yml | ||
controller.go | ||
default_gateway.go | ||
default_gateway_freebsd.go | ||
default_gateway_linux.go | ||
default_gateway_windows.go | ||
Dockerfile.build | ||
drivers.go | ||
drivers_experimental_linux.go | ||
drivers_freebsd.go | ||
drivers_linux.go | ||
drivers_stub_linux.go | ||
drivers_windows.go | ||
endpoint.go | ||
endpoint_cnt.go | ||
endpoint_info.go | ||
error.go | ||
errors_test.go | ||
libnetwork_internal_test.go | ||
libnetwork_test.go | ||
LICENSE | ||
machines | ||
MAINTAINERS | ||
Makefile | ||
network.go | ||
README.md | ||
resolver.go | ||
ROADMAP.md | ||
sandbox.go | ||
sandbox_dns_unix.go | ||
sandbox_dns_windows.go | ||
sandbox_externalkey.go | ||
sandbox_externalkey_unix.go | ||
sandbox_externalkey_windows.go | ||
sandbox_store.go | ||
sandbox_test.go | ||
store.go | ||
store_test.go | ||
Vagrantfile | ||
wrapmake.sh |
libnetwork - networking for containers
Libnetwork provides a native Go implementation for connecting containers
The goal of libnetwork is to deliver a robust Container Network Model that provides a consistent programming interface and the required network abstractions for applications.
Design
Please refer to the design for more information.
Using libnetwork
There are many networking solutions available to suit a broad range of use-cases. libnetwork uses a driver / plugin model to support all of these solutions while abstracting the complexity of the driver implementations by exposing a simple and consistent Network Model to users.
func main() {
if reexec.Init() {
return
}
// Select and configure the network driver
networkType := "bridge"
// Create a new controller instance
driverOptions := options.Generic{}
genericOption := make(map[string]interface{})
genericOption[netlabel.GenericData] = driverOptions
controller, err := libnetwork.New(config.OptionDriverConfig(networkType, genericOption))
if err != nil {
log.Fatalf("libnetwork.New: %s", err)
}
// Create a network for containers to join.
// NewNetwork accepts Variadic optional arguments that libnetwork and Drivers can use.
network, err := controller.NewNetwork(networkType, "network1")
if err != nil {
log.Fatalf("controller.NewNetwork: %s", err)
}
// For each new container: allocate IP and interfaces. The returned network
// settings will be used for container infos (inspect and such), as well as
// iptables rules for port publishing. This info is contained or accessible
// from the returned endpoint.
ep, err := network.CreateEndpoint("Endpoint1")
if err != nil {
log.Fatalf("network.CreateEndpoint: %s", err)
}
// Create the sandbox for the container.
// NewSandbox accepts Variadic optional arguments which libnetwork can use.
sbx, err := controller.NewSandbox("container1",
libnetwork.OptionHostname("test"),
libnetwork.OptionDomainname("docker.io"))
if err != nil {
log.Fatalf("controller.NewSandbox: %s", err)
}
// A sandbox can join the endpoint via the join api.
err = ep.Join(sbx)
if err != nil {
log.Fatalf("ep.Join: %s", err)
}
// libnetwork client can check the endpoint's operational data via the Info() API
epInfo, err := ep.DriverInfo()
if err != nil {
log.Fatalf("ep.DriverInfo: %s", err)
}
macAddress, ok := epInfo[netlabel.MacAddress]
if !ok {
log.Fatalf("failed to get mac address from endpoint info")
}
fmt.Printf("Joined endpoint %s (%s) to sandbox %s (%s)\n", ep.Name(), macAddress, sbx.ContainerID(), sbx.Key())
}
Future
Please refer to roadmap for more information.
Contributing
Want to hack on libnetwork? Docker's contributions guidelines apply.
Copyright and license
Code and documentation copyright 2015 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.