func (daemon *Daemon) initializeNetworking(container *container.Container) error {
var err error
if container.HostConfig.NetworkMode.IsContainer() {
// we need to get the hosts files from the container to join
nc, err := daemon.getNetworkedContainer(container.ID, container.HostConfig.NetworkMode.ConnectedContainer())
if err != nil {
return err
}
container.HostnamePath = nc.HostnamePath
container.HostsPath = nc.HostsPath
container.ResolvConfPath = nc.ResolvConfPath
container.Config.Hostname = nc.Config.Hostname
container.Config.Domainname = nc.Config.Domainname
return nil
}
if container.HostConfig.NetworkMode.IsHost() {
container.Config.Hostname, err = os.Hostname()
if err != nil {
return err
}
}
if err := daemon.allocateNetwork(container); err != nil {
return err
}
return container.BuildHostnameFile()
}
func (daemon *Daemon) initializeNetworking(container *container.Container) error {
var err error
// TODO Windows: Remove this once TP4 builds are not supported
// Windows TP4 build don't support libnetwork and in that case
// daemon.netController will be nil
if daemon.netController == nil {
return nil
}
if container.HostConfig.NetworkMode.IsContainer() {
// we need to get the hosts files from the container to join
nc, err := daemon.getNetworkedContainer(container.ID, container.HostConfig.NetworkMode.ConnectedContainer())
if err != nil {
return err
}
container.HostnamePath = nc.HostnamePath
container.HostsPath = nc.HostsPath
container.ResolvConfPath = nc.ResolvConfPath
container.Config.Hostname = nc.Config.Hostname
container.Config.Domainname = nc.Config.Domainname
return nil
}
if container.HostConfig.NetworkMode.IsHost() {
container.Config.Hostname, err = os.Hostname()
if err != nil {
return err
}
parts := strings.SplitN(container.Config.Hostname, ".", 2)
if len(parts) > 1 {
container.Config.Hostname = parts[0]
container.Config.Domainname = parts[1]
}
}
if err := daemon.allocateNetwork(container); err != nil {
return err
}
return container.BuildHostnameFile()
}
//网络初始化的相关操作。
func (daemon *Daemon) initializeNetworking(container *container.Container) error {
var err error
// TODO Windows: Remove this once TP4 builds are not supported
// Windows TP4 build don't support libnetwork and in that case
// daemon.netController will be nil
if daemon.netController == nil {
return nil
}
//网络模式是非主机模式下的设置，需要设置hostname文件，resove文件等。
if container.HostConfig.NetworkMode.IsContainer() {
// we need to get the hosts files from the container to join
nc, err := daemon.getNetworkedContainer(container.ID, container.HostConfig.NetworkMode.ConnectedContainer())
if err != nil {
return err
}
container.HostnamePath = nc.HostnamePath
container.HostsPath = nc.HostsPath
container.ResolvConfPath = nc.ResolvConfPath
container.Config.Hostname = nc.Config.Hostname
container.Config.Domainname = nc.Config.Domainname
return nil
}
//如果是主机模式，就是共享主机，不需要很多处理。
if container.HostConfig.NetworkMode.IsHost() {
container.Config.Hostname, err = os.Hostname()
if err != nil {
return err
}
}
//分配网络的核心代码。就在本页。
if err := daemon.allocateNetwork(container); err != nil {
return err
}
//将主机名写入文件。主机名是随机生成的。
return container.BuildHostnameFile()
}