Examples with K8sScaler edu.iu.dsc.tws.rsched.schedulers.k8s.driver.K8sScaler used on opensource projects

Example 1 with K8sScaler

use of edu.iu.dsc.tws.rsched.schedulers.k8s.driver.K8sScaler in project twister2 by DSC-SPIDAL.

the class KubernetesLauncher method startJobMasterOnClient.

/**
 * start the JobMaster locally on submitting client
 * this is a blocking call
 * it finishes after the job has completed
 */
private boolean startJobMasterOnClient(JobAPI.Job job) {
    // get Dashboard IP address from dashboard service name
    String dashAddress = JobMasterContext.dashboardHost(config);
    // get the IP address for the service name by querying Kubernetes master
    if (dashAddress.endsWith("svc.cluster.local")) {
        String dashIP = getDashboardIP(dashAddress);
        String dashURL = "http://" + dashIP;
        if (dashIP == null) {
            LOG.warning("Could not get Dashboard server IP address from dashboard service name: " + dashAddress + " will not connect to Dashboard. *****");
            dashURL = null;
        }
        config = JobMasterContext.updateDashboardHost(config, dashURL);
        LOG.info("Dashboard server HTTP URL: " + dashURL);
    }
    String hostAdress = RequestObjectBuilder.getJobMasterIP();
    JobMasterAPI.NodeInfo nodeInfo = NodeInfoUtils.createNodeInfo(hostAdress, null, null);
    K8sScaler k8sScaler = new K8sScaler(config, job, controller);
    JobMasterAPI.JobMasterState initialState = JobMasterAPI.JobMasterState.JM_STARTED;
    JobTerminator jobTerminator = new JobTerminator(config, controller);
    JobMaster jobMaster = new JobMaster(config, hostAdress, jobTerminator, job, nodeInfo, k8sScaler, initialState);
    jobMaster.addShutdownHook(true);
    // jobMaster.startJobMasterThreaded();
    try {
        jobMaster.startJobMasterBlocking();
    } catch (Twister2Exception e) {
        LOG.log(Level.SEVERE, e.getMessage(), e);
        return false;
    }
    return true;
}

Example 2 with K8sScaler

use of edu.iu.dsc.tws.rsched.schedulers.k8s.driver.K8sScaler in project twister2 by DSC-SPIDAL.

the class JobMasterExample method main.

/**
 * this main method is for locally testing only
 * A JobMaster instance is started locally on the default port:
 * edu.iu.dsc.tws.master.JobMasterContext.JOB_MASTER_PORT_DEFAULT = 11011
 * <p>
 * numberOfWorkers to join is expected as a parameter
 * <p>
 * When all workers joined and all have sent completed messages,
 * this server also completes and exits
 * <p>
 * En example usage of JobMaster can be seen in:
 * edu.iu.dsc.tws.rsched.schedulers.k8s.master.JobMasterStarter
 */
public static void main(String[] args) {
    if (args.length != 1) {
        LOG.info("usage: java JobMasterExample numberOfWorkers");
        return;
    }
    int numberOfWorkers = Integer.parseInt(args[0]);
    String host = "0.0.0.0";
    // we assume that the twister2Home is the current directory
    // String configDir = "../twister2/config/src/yaml/";
    String configDir = "";
    String twister2Home = Paths.get(configDir).toAbsolutePath().toString();
    Config config = ConfigLoader.loadConfig(twister2Home, "conf", "kubernetes");
    config = JobMasterClientExample.updateConfig(config, config, host);
    LOG.info("Loaded: " + config.size() + " configuration parameters.");
    // Twister2Job twister2Job = Twister2Job.loadTwister2Job(config, null);
    Twister2Job twister2Job = Twister2Job.newBuilder().setJobName("hello-world-job").setWorkerClass(HelloWorld.class).addComputeResource(.2, 128, numberOfWorkers).build();
    twister2Job.setUserName(System.getProperty("user.name"));
    JobAPI.Job job = twister2Job.serialize();
    LOG.info("JobID: " + job.getJobId());
    JobMasterAPI.JobMasterState initialState = JobMasterAPI.JobMasterState.JM_STARTED;
    JobMasterStarter.job = job;
    if (ZKContext.isZooKeeperServerUsed(config)) {
        if ("start".equalsIgnoreCase(args[0])) {
            JobMasterStarter.initializeZooKeeper(config, job.getJobId(), host, initialState);
        } else if ("restart".equalsIgnoreCase(args[0])) {
            initialState = JobMasterAPI.JobMasterState.JM_RESTARTED;
            JobMasterStarter.initializeZooKeeper(config, job.getJobId(), host, initialState);
            job = JobMasterStarter.job;
        } else {
            LOG.info("usage: java JobMasterExample start/restart");
            return;
        }
    }
    // write jobID to file
    String dir = System.getProperty("user.home") + "/.twister2";
    if (!FileUtils.isDirectoryExists(dir)) {
        FileUtils.createDirectory(dir);
    }
    String filename = dir + "/last-job-id.txt";
    FileUtils.writeToFile(filename, (job.getJobId() + "").getBytes(), true);
    LOG.info("Written jobID to file: " + job.getJobId());
    String ip = null;
    try {
        ip = Inet4Address.getLocalHost().getHostAddress();
    } catch (UnknownHostException e) {
        LOG.log(Level.SEVERE, e.getMessage(), e);
        return;
    }
    JobMasterAPI.NodeInfo jobMasterNode = NodeInfoUtils.createNodeInfo(ip, null, null);
    KubernetesController controller = KubernetesController.init("default");
    K8sScaler k8sScaler = new K8sScaler(config, job, controller);
    IJobTerminator jobTerminator = new NullTerminator();
    JobMaster jobMaster = new JobMaster(config, host, jobTerminator, job, jobMasterNode, k8sScaler, initialState);
    try {
        // jobMaster.startJobMasterThreaded();
        jobMaster.startJobMasterBlocking();
    } catch (Twister2Exception e) {
        LOG.log(Level.SEVERE, "Exception when starting Job master: ", e);
        throw new RuntimeException(e);
    }
    LOG.info("Threaded Job Master started:" + "\nnumberOfWorkers: " + job.getNumberOfWorkers() + "\njobID: " + job.getJobId());
}

Example 3 with K8sScaler

use of edu.iu.dsc.tws.rsched.schedulers.k8s.driver.K8sScaler in project twister2 by DSC-SPIDAL.

the class JobMasterStarter method main.

public static void main(String[] args) {
    // we can not initialize the logger fully yet,
    // but we need to set the format as the first thing
    LoggingHelper.setLoggingFormat(LoggingHelper.DEFAULT_FORMAT);
    // get environment variables
    String jobID = System.getenv(K8sEnvVariables.JOB_ID.name());
    String encodedNodeInfoList = System.getenv(K8sEnvVariables.ENCODED_NODE_INFO_LIST.name());
    String hostIP = System.getenv(K8sEnvVariables.HOST_IP.name());
    boolean restoreJob = Boolean.parseBoolean(System.getenv(K8sEnvVariables.RESTORE_JOB.name()));
    // load the configuration parameters from configuration directory
    String configDir = POD_MEMORY_VOLUME + File.separator + JOB_ARCHIVE_DIRECTORY;
    Config config = K8sWorkerUtils.loadConfig(configDir);
    // read job description file
    String jobDescFileName = SchedulerContext.createJobDescriptionFileName(jobID);
    jobDescFileName = POD_MEMORY_VOLUME + File.separator + JOB_ARCHIVE_DIRECTORY + File.separator + jobDescFileName;
    job = JobUtils.readJobFile(jobDescFileName);
    LOG.info("Job description file is loaded: " + jobDescFileName);
    // add any configuration from job file to the config object
    // if there are the same config parameters in both,
    // job file configurations will override
    config = JobUtils.overrideConfigs(job, config);
    config = JobUtils.updateConfigs(job, config);
    config = Config.newBuilder().putAll(config).put(CheckpointingContext.CHECKPOINTING_RESTORE_JOB, restoreJob).build();
    // init logger
    K8sWorkerUtils.initLogger(config, "jobMaster", JobMasterContext.persistentVolumeRequested(config));
    LOG.info("JobMaster is starting. Current time: " + System.currentTimeMillis());
    LOG.info("Number of configuration parameters: " + config.size());
    // get podIP from localhost
    InetAddress localHost = null;
    try {
        localHost = InetAddress.getLocalHost();
    } catch (UnknownHostException e) {
        throw new RuntimeException("Cannot get localHost.", e);
    }
    String podIP = localHost.getHostAddress();
    // construct nodeInfo for Job Master
    JobMasterAPI.NodeInfo nodeInfo = KubernetesContext.nodeLocationsFromConfig(config) ? KubernetesContext.getNodeInfo(config, hostIP) : K8sWorkerUtils.getNodeInfoFromEncodedStr(encodedNodeInfoList, hostIP);
    LOG.info("NodeInfo for JobMaster: " + nodeInfo);
    KubernetesController controller = KubernetesController.init(KubernetesContext.namespace(config));
    JobTerminator jobTerminator = new JobTerminator(config, controller);
    K8sScaler k8sScaler = new K8sScaler(config, job, controller);
    // get restart count from job ConfigMap
    // if jm is running for the first time, initialize restart count at CM
    String keyName = KubernetesUtils.createRestartJobMasterKey();
    int restartCount = K8sWorkerUtils.initRestartFromCM(controller, jobID, keyName);
    JobMasterState initialState = JobMasterState.JM_STARTED;
    if (restartCount > 0) {
        initialState = JobMasterState.JM_RESTARTED;
        // so, we terminate the job with failure
        if (!ZKContext.isZooKeeperServerUsed(config)) {
            jobTerminator.terminateJob(jobID, JobAPI.JobState.FAILED);
            return;
        }
    }
    if (ZKContext.isZooKeeperServerUsed(config)) {
        boolean zkInitialized = initializeZooKeeper(config, jobID, podIP, initialState);
        if (!zkInitialized) {
            jobTerminator.terminateJob(jobID, JobAPI.JobState.FAILED);
            return;
        }
    }
    // start JobMaster
    JobMaster jobMaster = new JobMaster(config, podIP, jobTerminator, job, nodeInfo, k8sScaler, initialState);
    // start configMap watcher to watch the kill parameter from twister2 client
    JobKillWatcher jkWatcher = new JobKillWatcher(KubernetesContext.namespace(config), jobID, controller, jobMaster);
    jkWatcher.start();
    // on any uncaught exception, we will label the job master as FAILED and
    // throw a RuntimeException
    // JVM will be restarted by K8s
    Thread.setDefaultUncaughtExceptionHandler((thread, throwable) -> {
        LOG.log(Level.SEVERE, "Uncaught exception in the thread " + thread + ". Job Master FAILED...", throwable);
        jobMaster.jmFailed();
        jkWatcher.close();
        controller.close();
        throw new RuntimeException("Worker failed with the exception", throwable);
    });
    try {
        jobMaster.startJobMasterBlocking();
    } catch (Twister2Exception e) {
        LOG.log(Level.SEVERE, e.getMessage(), e);
    }
    // close the controller
    controller.close();
}