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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.provision.maintenance;
import com.google.inject.Inject;
import com.yahoo.component.AbstractComponent;
import com.yahoo.config.provision.Deployer;
import com.yahoo.config.provision.Environment;
import com.yahoo.config.provision.HostLivenessTracker;
import com.yahoo.config.provision.Zone;
import com.yahoo.jdisc.Metric;
import com.yahoo.vespa.curator.Curator;
import com.yahoo.vespa.hosted.provision.NodeRepository;
import com.yahoo.vespa.hosted.provision.maintenance.retire.RetireIPv4OnlyNodes;
import com.yahoo.vespa.hosted.provision.maintenance.retire.RetirementPolicy;
import com.yahoo.vespa.hosted.provision.maintenance.retire.RetirementPolicyList;
import com.yahoo.vespa.hosted.provision.provisioning.FlavorSpareChecker;
import com.yahoo.vespa.hosted.provision.provisioning.FlavorSpareCount;
import com.yahoo.vespa.orchestrator.Orchestrator;
import com.yahoo.vespa.service.monitor.ServiceMonitor;
import java.time.Clock;
import java.time.Duration;
import java.util.Arrays;
import java.util.Optional;
import java.util.logging.Logger;
/**
* A component which sets up all the node repo maintenance jobs.
*
* @author bratseth
*/
public class NodeRepositoryMaintenance extends AbstractComponent {
private static final Logger log = Logger.getLogger(NodeRepositoryMaintenance.class.getName());
private static final String envPrefix = "vespa_node_repository__";
private final NodeFailer nodeFailer;
private final PeriodicApplicationMaintainer periodicApplicationMaintainer;
private final OperatorChangeApplicationMaintainer operatorChangeApplicationMaintainer;
private final ZooKeeperAccessMaintainer zooKeeperAccessMaintainer;
private final ReservationExpirer reservationExpirer;
private final InactiveExpirer inactiveExpirer;
private final RetiredExpirer retiredExpirer;
private final RetiredEarlyExpirer retiredEarlyExpirer;
private final FailedExpirer failedExpirer;
private final DirtyExpirer dirtyExpirer;
private final ProvisionedExpirer provisionedExpirer;
private final NodeRebooter nodeRebooter;
private final NodeRetirer nodeRetirer;
private final MetricsReporter metricsReporter;
private final JobControl jobControl;
@Inject
public NodeRepositoryMaintenance(NodeRepository nodeRepository, Deployer deployer, Curator curator,
HostLivenessTracker hostLivenessTracker, ServiceMonitor serviceMonitor,
Zone zone, Orchestrator orchestrator, Metric metric) {
this(nodeRepository, deployer, curator, hostLivenessTracker, serviceMonitor, zone, Clock.systemUTC(), orchestrator, metric);
}
public NodeRepositoryMaintenance(NodeRepository nodeRepository, Deployer deployer, Curator curator,
HostLivenessTracker hostLivenessTracker, ServiceMonitor serviceMonitor,
Zone zone, Clock clock, Orchestrator orchestrator, Metric metric) {
DefaultTimes defaults = new DefaultTimes(zone.environment());
jobControl = new JobControl(nodeRepository.database());
nodeFailer = new NodeFailer(deployer, hostLivenessTracker, serviceMonitor, nodeRepository, durationFromEnv("fail_grace").orElse(defaults.failGrace), clock, orchestrator, throttlePolicyFromEnv("throttle_policy").orElse(defaults.throttlePolicy), jobControl);
periodicApplicationMaintainer = new PeriodicApplicationMaintainer(deployer, nodeRepository, durationFromEnv("periodic_redeploy_interval").orElse(defaults.periodicRedeployInterval), jobControl);
operatorChangeApplicationMaintainer = new OperatorChangeApplicationMaintainer(deployer, nodeRepository, clock, durationFromEnv("operator_change_redeploy_interval").orElse(defaults.operatorChangeRedeployInterval), jobControl);
zooKeeperAccessMaintainer = new ZooKeeperAccessMaintainer(nodeRepository, curator, durationFromEnv("zookeeper_access_maintenance_interval").orElse(defaults.zooKeeperAccessMaintenanceInterval), jobControl);
reservationExpirer = new ReservationExpirer(nodeRepository, clock, durationFromEnv("reservation_expiry").orElse(defaults.reservationExpiry), jobControl);
retiredExpirer = new RetiredExpirer(nodeRepository, deployer, clock, durationFromEnv("retired_expiry").orElse(defaults.retiredExpiry), jobControl);
retiredEarlyExpirer = new RetiredEarlyExpirer(nodeRepository, zone, durationFromEnv("retired_early_interval").orElse(defaults.retiredEarlyInterval), jobControl, deployer, orchestrator);
inactiveExpirer = new InactiveExpirer(nodeRepository, clock, durationFromEnv("inactive_expiry").orElse(defaults.inactiveExpiry), jobControl);
failedExpirer = new FailedExpirer(nodeRepository, zone, clock, durationFromEnv("failed_expiry").orElse(defaults.failedExpiry), jobControl);
dirtyExpirer = new DirtyExpirer(nodeRepository, clock, durationFromEnv("dirty_expiry").orElse(defaults.dirtyExpiry), jobControl);
provisionedExpirer = new ProvisionedExpirer(nodeRepository, clock, durationFromEnv("provisioned_expiry").orElse(defaults.provisionedExpiry), jobControl);
nodeRebooter = new NodeRebooter(nodeRepository, clock, durationFromEnv("reboot_interval").orElse(defaults.rebootInterval), jobControl);
metricsReporter = new MetricsReporter(nodeRepository, metric, durationFromEnv("metrics_interval").orElse(defaults.metricsInterval), jobControl);
RetirementPolicy policy = new RetirementPolicyList(new RetireIPv4OnlyNodes(zone));
FlavorSpareChecker flavorSpareChecker = new FlavorSpareChecker(
NodeRetirer.SPARE_NODES_POLICY, FlavorSpareCount.constructFlavorSpareCountGraph(zone.nodeFlavors().get().getFlavors()));
nodeRetirer = new NodeRetirer(nodeRepository, flavorSpareChecker, durationFromEnv("retire_interval").orElse(defaults.nodeRetirerInterval), deployer, jobControl, policy);
}
@Override
public void deconstruct() {
nodeFailer.deconstruct();
periodicApplicationMaintainer.deconstruct();
operatorChangeApplicationMaintainer.deconstruct();
zooKeeperAccessMaintainer.deconstruct();
reservationExpirer.deconstruct();
inactiveExpirer.deconstruct();
retiredExpirer.deconstruct();
retiredEarlyExpirer.deconstruct();
failedExpirer.deconstruct();
dirtyExpirer.deconstruct();
nodeRebooter.deconstruct();
nodeRetirer.deconstruct();
provisionedExpirer.deconstruct();
metricsReporter.deconstruct();
}
public JobControl jobControl() { return jobControl; }
private static Optional<Duration> durationFromEnv(String envVariable) {
return Optional.ofNullable(System.getenv(envPrefix + envVariable)).map(Long::parseLong).map(Duration::ofSeconds);
}
private static Optional<NodeFailer.ThrottlePolicy> throttlePolicyFromEnv(String envVariable) {
String policyName = System.getenv(envPrefix + envVariable);
try {
return Optional.ofNullable(policyName).map(NodeFailer.ThrottlePolicy::valueOf);
} catch (IllegalArgumentException e) {
log.info(String.format("Ignoring invalid throttle policy name: '%s'. Must be one of %s", policyName,
Arrays.toString(NodeFailer.ThrottlePolicy.values())));
return Optional.empty();
}
}
private static class DefaultTimes {
/** All applications are redeployed with this period */
private final Duration periodicRedeployInterval;
/** Applications are redeployed after manual operator changes within this time period */
private final Duration operatorChangeRedeployInterval;
/** The time a node must be continuously nonresponsive before it is failed */
private final Duration failGrace;
private final Duration zooKeeperAccessMaintenanceInterval;
private final Duration reservationExpiry;
private final Duration inactiveExpiry;
private final Duration retiredExpiry;
private final Duration failedExpiry;
private final Duration dirtyExpiry;
private final Duration provisionedExpiry;
private final Duration rebootInterval;
private final Duration nodeRetirerInterval;
private final Duration metricsInterval;
private final Duration retiredEarlyInterval;
private final NodeFailer.ThrottlePolicy throttlePolicy;
DefaultTimes(Environment environment) {
if (environment.equals(Environment.prod)) {
// These values are to avoid losing data (retired), and to be able to return an application
// back to a previous state fast (inactive)
failGrace = Duration.ofMinutes(60);
periodicRedeployInterval = Duration.ofMinutes(30);
operatorChangeRedeployInterval = Duration.ofMinutes(1);
zooKeeperAccessMaintenanceInterval = Duration.ofMinutes(1);
reservationExpiry = Duration.ofMinutes(20); // same as deployment timeout
inactiveExpiry = Duration.ofHours(4); // enough time for the application owner to discover and redeploy
retiredExpiry = Duration.ofDays(4); // enough time to migrate data
retiredEarlyInterval = Duration.ofMinutes(29);
failedExpiry = Duration.ofDays(4); // enough time to recover data even if it happens friday night
dirtyExpiry = Duration.ofHours(2); // enough time to clean the node
provisionedExpiry = Duration.ofHours(4);
rebootInterval = Duration.ofDays(30);
nodeRetirerInterval = Duration.ofMinutes(30);
metricsInterval = Duration.ofMinutes(1);
throttlePolicy = NodeFailer.ThrottlePolicy.hosted;
} else {
// These values ensure tests and development is not delayed due to nodes staying around
// Use non-null values as these also determine the maintenance interval
failGrace = Duration.ofMinutes(60);
periodicRedeployInterval = Duration.ofMinutes(30);
operatorChangeRedeployInterval = Duration.ofMinutes(1);
zooKeeperAccessMaintenanceInterval = Duration.ofSeconds(10);
reservationExpiry = Duration.ofMinutes(10); // Need to be long enough for deployment to be finished for all config model versions
inactiveExpiry = Duration.ofSeconds(2); // support interactive wipe start over
retiredExpiry = Duration.ofMinutes(1);
retiredEarlyInterval = Duration.ofMinutes(5);
failedExpiry = Duration.ofMinutes(10);
dirtyExpiry = Duration.ofMinutes(30);
provisionedExpiry = Duration.ofHours(4);
rebootInterval = Duration.ofDays(30);
nodeRetirerInterval = Duration.ofMinutes(30);
metricsInterval = Duration.ofMinutes(1);
throttlePolicy = NodeFailer.ThrottlePolicy.hosted;
}
}
}
}
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