func newLifecycleTest(t *testing.T) lifecycleTest {
assert := &EventAssertions{*assert.New(t)}
// create a fake pod watch. We use that below to submit new pods to the scheduler
podsListWatch := NewMockPodsListWatch(api.PodList{})
// create fake apiserver
apiServer := NewTestServer(t, api.NamespaceDefault, podsListWatch)
// create ExecutorInfo with some data for static pods if set
ei := mesosutil.NewExecutorInfo(
mesosutil.NewExecutorID("executor-id"),
mesosutil.NewCommandInfo("executor-cmd"),
)
ei.Data = []byte{0, 1, 2}
// create framework
client := client.NewOrDie(&client.Config{
Host: apiServer.server.URL,
GroupVersion: testapi.Default.GroupVersion(),
})
c := *schedcfg.CreateDefaultConfig()
fw := framework.New(framework.Config{
Executor: ei,
Client: client,
SchedulerConfig: c,
LookupNode: apiServer.LookupNode,
})
// TODO(sttts): re-enable the following tests
// assert.NotNil(framework.client, "client is nil")
// assert.NotNil(framework.executor, "executor is nil")
// assert.NotNil(framework.offers, "offer registry is nil")
// create pod scheduler
strategy := podschedulers.NewAllocationStrategy(
podtask.NewDefaultPredicate(
mresource.DefaultDefaultContainerCPULimit,
mresource.DefaultDefaultContainerMemLimit,
),
podtask.NewDefaultProcurement(
mresource.DefaultDefaultContainerCPULimit,
mresource.DefaultDefaultContainerMemLimit,
),
)
fcfs := podschedulers.NewFCFSPodScheduler(strategy, apiServer.LookupNode)
// create scheduler process
schedulerProc := ha.New(fw)
// create scheduler
eventObs := NewEventObserver()
scheduler := components.New(&c, fw, fcfs, client, eventObs, schedulerProc.Terminal(), http.DefaultServeMux, &podsListWatch.ListWatch)
assert.NotNil(scheduler)
// create mock mesos scheduler driver
driver := &framework.JoinableDriver{}
return lifecycleTest{
apiServer: apiServer,
driver: driver,
eventObs: eventObs,
podsListWatch: podsListWatch,
framework: fw,
schedulerProc: schedulerProc,
sched: scheduler,
t: t,
}
}
func (s *SchedulerServer) bootstrap(hks hyperkube.Interface, sc *schedcfg.Config) (*ha.SchedulerProcess, ha.DriverFactory, tools.EtcdClient, *uid.UID) {
s.frameworkName = strings.TrimSpace(s.frameworkName)
if s.frameworkName == "" {
log.Fatalf("framework-name must be a non-empty string")
}
s.frameworkWebURI = strings.TrimSpace(s.frameworkWebURI)
metrics.Register()
runtime.Register()
s.mux.Handle("/metrics", prometheus.Handler())
healthz.InstallHandler(s.mux)
if (s.etcdConfigFile != "" && len(s.etcdServerList) != 0) || (s.etcdConfigFile == "" && len(s.etcdServerList) == 0) {
log.Fatalf("specify either --etcd-servers or --etcd-config")
}
if len(s.apiServerList) < 1 {
log.Fatal("No api servers specified.")
}
client, err := s.createAPIServerClient()
if err != nil {
log.Fatalf("Unable to make apiserver client: %v", err)
}
s.client = client
if s.reconcileCooldown < defaultReconcileCooldown {
s.reconcileCooldown = defaultReconcileCooldown
log.Warningf("user-specified reconcile cooldown too small, defaulting to %v", s.reconcileCooldown)
}
executor, eid, err := s.prepareExecutorInfo(hks)
if err != nil {
log.Fatalf("misconfigured executor: %v", err)
}
// TODO(jdef): remove the dependency on etcd as soon as
// (1) the generic config store is available for the FrameworkId storage
// (2) the generic master election is provided by the apiserver
// Compare docs/proposals/high-availability.md
etcdClient, err := newEtcd(s.etcdConfigFile, s.etcdServerList)
if err != nil {
log.Fatalf("misconfigured etcd: %v", err)
}
as := podschedulers.NewAllocationStrategy(
podtask.NewDefaultPredicate(
s.defaultContainerCPULimit,
s.defaultContainerMemLimit,
),
podtask.NewDefaultProcurement(
s.defaultContainerCPULimit,
s.defaultContainerMemLimit,
),
)
// downgrade allocation strategy if user disables "account-for-pod-resources"
if !s.accountForPodResources {
as = podschedulers.NewAllocationStrategy(
podtask.DefaultMinimalPredicate,
podtask.DefaultMinimalProcurement)
}
// mirror all nodes into the nodeStore
nodesClient, err := s.createAPIServerClient()
if err != nil {
log.Fatalf("Cannot create client to watch nodes: %v", err)
}
nodeStore := cache.NewStore(cache.MetaNamespaceKeyFunc)
nodeLW := cache.NewListWatchFromClient(nodesClient, "nodes", api.NamespaceAll, fields.Everything())
cache.NewReflector(nodeLW, &api.Node{}, nodeStore, s.nodeRelistPeriod).Run()
lookupNode := func(hostName string) *api.Node {
n, _, _ := nodeStore.GetByKey(hostName) // ignore error and return nil then
if n == nil {
return nil
}
return n.(*api.Node)
}
fcfs := podschedulers.NewFCFSPodScheduler(as, lookupNode)
framework := framework.New(framework.Config{
SchedulerConfig: *sc,
Executor: executor,
Client: client,
FailoverTimeout: s.failoverTimeout,
ReconcileInterval: s.reconcileInterval,
ReconcileCooldown: s.reconcileCooldown,
LookupNode: lookupNode,
StoreFrameworkId: func(id string) {
// TODO(jdef): port FrameworkId store to generic Kubernetes config store as soon as available
_, err := etcdClient.Set(meta.FrameworkIDKey, id, uint64(s.failoverTimeout))
if err != nil {
log.Errorf("failed to renew frameworkId TTL: %v", err)
}
},
})
masterUri := s.mesosMaster
info, cred, err := s.buildFrameworkInfo()
if err != nil {
log.Fatalf("Misconfigured mesos framework: %v", err)
}
schedulerProcess := ha.New(framework)
dconfig := &bindings.DriverConfig{
Scheduler: schedulerProcess,
Framework: info,
Master: masterUri,
Credential: cred,
BindingAddress: s.address,
BindingPort: uint16(s.driverPort),
HostnameOverride: s.hostnameOverride,
WithAuthContext: func(ctx context.Context) context.Context {
ctx = auth.WithLoginProvider(ctx, s.mesosAuthProvider)
ctx = sasl.WithBindingAddress(ctx, s.address)
return ctx
},
}
// create event recorder sending events to the "" namespace of the apiserver
broadcaster := record.NewBroadcaster()
recorder := broadcaster.NewRecorder(api.EventSource{Component: "scheduler"})
broadcaster.StartRecordingToSink(client.Events(""))
// create scheduler core with all components arranged around it
lw := cache.NewListWatchFromClient(client, "pods", api.NamespaceAll, fields.Everything())
sched := components.New(sc, framework, fcfs, client, recorder, schedulerProcess.Terminal(), s.mux, lw)
runtime.On(framework.Registration(), func() { sched.Run(schedulerProcess.Terminal()) })
runtime.On(framework.Registration(), s.newServiceWriter(schedulerProcess.Terminal()))
driverFactory := ha.DriverFactory(func() (drv bindings.SchedulerDriver, err error) {
log.V(1).Infoln("performing deferred initialization")
if err = framework.Init(sched, schedulerProcess.Master(), s.mux); err != nil {
return nil, fmt.Errorf("failed to initialize pod scheduler: %v", err)
}
log.V(1).Infoln("deferred init complete")
// defer obtaining framework ID to prevent multiple schedulers
// from overwriting each other's framework IDs
dconfig.Framework.Id, err = s.fetchFrameworkID(etcdClient)
if err != nil {
return nil, fmt.Errorf("failed to fetch framework ID from etcd: %v", err)
}
log.V(1).Infoln("constructing mesos scheduler driver")
drv, err = bindings.NewMesosSchedulerDriver(*dconfig)
if err != nil {
return nil, fmt.Errorf("failed to construct scheduler driver: %v", err)
}
log.V(1).Infoln("constructed mesos scheduler driver:", drv)
s.setDriver(drv)
return drv, nil
})
return schedulerProcess, driverFactory, etcdClient, eid
}