func NewLxcBroker(config *config.Config, tools *state.Tools) Broker {
return &lxcBroker{
manager: lxc.NewContainerManager(lxc.ManagerConfig{Name: "juju"}),
config: config,
tools: tools,
}
}
func (s *LxcSuite) TestListContainers(c *gc.C) {
foo := lxc.NewContainerManager(lxc.ManagerConfig{Name: "foo"})
bar := lxc.NewContainerManager(lxc.ManagerConfig{Name: "bar"})
foo1 := StartContainer(c, foo, "1/lxc/0")
foo2 := StartContainer(c, foo, "1/lxc/1")
foo3 := StartContainer(c, foo, "1/lxc/2")
bar1 := StartContainer(c, bar, "1/lxc/0")
bar2 := StartContainer(c, bar, "1/lxc/1")
result, err := foo.ListContainers()
c.Assert(err, gc.IsNil)
testing.MatchInstances(c, result, foo1, foo2, foo3)
result, err = bar.ListContainers()
c.Assert(err, gc.IsNil)
testing.MatchInstances(c, result, bar1, bar2)
}
func (s *LxcSuite) TestStopContainer(c *gc.C) {
manager := lxc.NewContainerManager(lxc.ManagerConfig{})
instance := StartContainer(c, manager, "1/lxc/0")
err := manager.StopContainer(instance)
c.Assert(err, gc.IsNil)
name := string(instance.Id())
// Check that the container dir is no longer in the container dir
c.Assert(filepath.Join(s.ContainerDir, name), jc.DoesNotExist)
// but instead, in the removed container dir
c.Assert(filepath.Join(s.RemovedDir, name), jc.IsDirectory)
}
func (s *LxcSuite) TestStartContainer(c *gc.C) {
manager := lxc.NewContainerManager(lxc.ManagerConfig{})
instance := StartContainer(c, manager, "1/lxc/0")
name := string(instance.Id())
// Check our container config files.
lxcConfContents, err := ioutil.ReadFile(filepath.Join(s.ContainerDir, name, "lxc.conf"))
c.Assert(err, gc.IsNil)
c.Assert(string(lxcConfContents), jc.Contains, "lxc.network.link = nic42")
cloudInitFilename := filepath.Join(s.ContainerDir, name, "cloud-init")
c.Assert(cloudInitFilename, jc.IsNonEmptyFile)
data, err := ioutil.ReadFile(cloudInitFilename)
c.Assert(err, gc.IsNil)
c.Assert(string(data), jc.HasPrefix, "#cloud-config\n")
x := make(map[interface{}]interface{})
err = goyaml.Unmarshal(data, &x)
c.Assert(err, gc.IsNil)
c.Assert(x["apt_proxy"], gc.Equals, aptHTTPProxy)
var scripts []string
for _, s := range x["runcmd"].([]interface{}) {
scripts = append(scripts, s.(string))
}
c.Assert(scripts[len(scripts)-4:], gc.DeepEquals, []string{
"start jujud-machine-1-lxc-0",
"install -m 644 /dev/null '/etc/apt/apt.conf.d/99proxy-extra'",
fmt.Sprintf("echo '%s' > '/etc/apt/apt.conf.d/99proxy-extra'", configProxyExtra),
"ifconfig",
})
// Check the mount point has been created inside the container.
c.Assert(filepath.Join(s.LxcDir, name, "rootfs/var/log/juju"), jc.IsDirectory)
// Check that the config file is linked in the restart dir.
expectedLinkLocation := filepath.Join(s.RestartDir, name+".conf")
expectedTarget := filepath.Join(s.LxcDir, name, "config")
linkInfo, err := os.Lstat(expectedLinkLocation)
c.Assert(err, gc.IsNil)
c.Assert(linkInfo.Mode()&os.ModeSymlink, gc.Equals, os.ModeSymlink)
location, err := os.Readlink(expectedLinkLocation)
c.Assert(err, gc.IsNil)
c.Assert(location, gc.Equals, expectedTarget)
}
func (s *LxcSuite) TestStopContainerNameClash(c *gc.C) {
manager := lxc.NewContainerManager(lxc.ManagerConfig{})
instance := StartContainer(c, manager, "1/lxc/0")
name := string(instance.Id())
targetDir := filepath.Join(s.RemovedDir, name)
err := os.MkdirAll(targetDir, 0755)
c.Assert(err, gc.IsNil)
err = manager.StopContainer(instance)
c.Assert(err, gc.IsNil)
// Check that the container dir is no longer in the container dir
c.Assert(filepath.Join(s.ContainerDir, name), jc.DoesNotExist)
// but instead, in the removed container dir with a ".1" suffix as there was already a directory there.
c.Assert(filepath.Join(s.RemovedDir, fmt.Sprintf("%s.1", name)), jc.IsDirectory)
}
// EnsureWeHaveLXC checks if we have lxc installed, and installs it if we
// don't. Juju 1.11 added the ability to deploy into LXC containers, and uses
// functionality from the lxc package in order to do so. Juju 1.10 did not
// install lxc, so we ensure it is installed.
// See http://bugs.launchpad.net/bug/1199913
// dataDir is the root location where data files are put. It is used to grab
// the uniter-hook-execution lock so that we don't try run to apt-get at the
// same time that a hook might want to run it.
func EnsureWeHaveLXC(dataDir, machineTag string) error {
// We need to short circuit this in two places:
// 1. if we are running a local provider, then the machines are lxc
// containers, and if we install lxc on them, it adds an lxc bridge
// network device with the same ip address as the hosts bridge. This
// screws up all the networking routes.
// 2. if the machine is an lxc container, we need to avoid installing lxc
// package for exactly the same reasons.
// Later, post-precise LTS, when we have updated lxc, we can bring this
// back in to have nested lxc, but until then, we have to avoid it.
containerType := state.ContainerTypeFromId(state.MachineIdFromTag(machineTag))
providerType := os.Getenv("JUJU_PROVIDER_TYPE")
if providerType == provider.Local || containerType == instance.LXC {
return nil
}
manager := lxc.NewContainerManager(lxc.ManagerConfig{Name: "lxc-test"})
if _, err := manager.ListContainers(); err == nil {
validationLogger.Debugf("found lxc, not installing")
// We already have it, nothing more to do
return nil
}
validationLogger.Debugf("got error looking for lxc, attempting to install")
if dataDir != "" {
lock, err := getUniterLock(dataDir, "apt-get install lxc for juju 1.11 upgrade")
if err == nil {
defer lock.Unlock()
} else {
validationLogger.Warningf("Failed to acquire lock: %v, will try to install lxc anyway", lock)
}
// If we got an error trying to acquire the lock, we try to install
// lxc anyway. Worst case the install will fail, which is where we
// are already
}
// TODO: This is not platform independent. If jujud is running on
// something other than a debian-based Linux, and we are missing
// lxc, this call will always fail. However, in juju 1.11+ we
// install lxc via cloud-init or whatever bootstrap code we use.
// So this is really only upgrade compatibility and juju 1.10
// only supports debian-based anyway
return utils.AptGetInstall("lxc")
}
// SetConfig is specified in the Environ interface.
func (env *localEnviron) SetConfig(cfg *config.Config) error {
config, err := provider.newConfig(cfg)
if err != nil {
logger.Errorf("failed to create new environ config: %v", err)
return err
}
env.localMutex.Lock()
defer env.localMutex.Unlock()
env.config = config
env.name = config.Name()
env.containerManager = lxc.NewContainerManager(
lxc.ManagerConfig{
Name: env.config.namespace(),
LogDir: env.config.logDir(),
})
// Here is the end of normal config setting.
if config.bootstrapped() {
return nil
}
return env.bootstrapAddressAndStorage(cfg)
}
func (s *LxcSuite) TestStartContainer(c *gc.C) {
manager := lxc.NewContainerManager(lxc.ManagerConfig{})
instance := StartContainer(c, manager, "1/lxc/0")
name := string(instance.Id())
// Check our container config files.
c.Assert(filepath.Join(s.ContainerDir, name, "lxc.conf"), jc.IsNonEmptyFile)
cloudInitFilename := filepath.Join(s.ContainerDir, name, "cloud-init")
c.Assert(cloudInitFilename, jc.IsNonEmptyFile)
data, err := ioutil.ReadFile(cloudInitFilename)
c.Assert(err, gc.IsNil)
c.Assert(string(data), jc.HasPrefix, "#cloud-config\n")
x := make(map[interface{}]interface{})
err = goyaml.Unmarshal(data, &x)
c.Assert(err, gc.IsNil)
var scripts []string
for _, s := range x["runcmd"].([]interface{}) {
scripts = append(scripts, s.(string))
}
c.Assert(scripts[len(scripts)-1], gc.Equals, "start jujud-machine-1-lxc-0")
// Check the mount point has been created inside the container.
c.Assert(filepath.Join(s.LxcDir, name, "rootfs/var/log/juju"), jc.IsDirectory)
// Check that the config file is linked in the restart dir.
expectedLinkLocation := filepath.Join(s.RestartDir, name+".conf")
expectedTarget := filepath.Join(s.LxcDir, name, "config")
linkInfo, err := os.Lstat(expectedLinkLocation)
c.Assert(err, gc.IsNil)
c.Assert(linkInfo.Mode()&os.ModeSymlink, gc.Equals, os.ModeSymlink)
location, err := os.Readlink(expectedLinkLocation)
c.Assert(err, gc.IsNil)
c.Assert(location, gc.Equals, expectedTarget)
}
func (s *LxcSuite) TestNamedManagerPrefix(c *gc.C) {
manager := lxc.NewContainerManager(lxc.ManagerConfig{Name: "eric"})
instance := StartContainer(c, manager, "1/lxc/0")
c.Assert(string(instance.Id()), gc.Equals, "eric-machine-1-lxc-0")
}