Package com.cloud.host

Examples of com.cloud.host.Status

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        return null;
    }

    @Override
    public Boolean isVmAlive(VirtualMachine vm, Host host) {
        Status status = isAgentAlive(host);
        if (status == null) {
            return null;
        }
        return status == Status.Up ? true : null;
    }
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        for (Long hostId : otherHosts) {

            if (s_logger.isDebugEnabled()) {
                s_logger.debug("sending ping from (" + hostId + ") to agent's host ip address (" + agent.getPrivateIpAddress() + ")");
            }
            Status hostState = testIpAddress(hostId, agent.getPrivateIpAddress());
            if (hostState == null) {
                continue;
            }
            if (hostState == Status.Up) {
                if (s_logger.isDebugEnabled()) {
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            s_logger.debug("checking if agent (" + hostId + ") is alive");
        }

        Answer answer = easySend(hostId, new CheckHealthCommand());
        if (answer != null && answer.getResult()) {
            Status status = Status.Up;
            if (s_logger.isDebugEnabled()) {
                s_logger.debug("agent (" + hostId + ") responded to checkHeathCommand, reporting that agent is " + status);
            }
            return status;
        }
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    protected boolean handleDisconnectWithoutInvestigation(AgentAttache attache, Status.Event event, boolean transitState, boolean removeAgent) {
        long hostId = attache.getId();

        s_logger.info("Host " + hostId + " is disconnecting with event " + event);
        Status nextStatus = null;
        HostVO host = _hostDao.findById(hostId);
        if (host == null) {
            s_logger.warn("Can't find host with " + hostId);
            nextStatus = Status.Removed;
        } else {
            final Status currentStatus = host.getStatus();
            if (currentStatus == Status.Down || currentStatus == Status.Alert || currentStatus == Status.Removed) {
                if (s_logger.isDebugEnabled()) {
                    s_logger.debug("Host " + hostId + " is already " + currentStatus);
                }
                nextStatus = currentStatus;
            } else {
                try {
                    nextStatus = currentStatus.getNextStatus(event);
                } catch (NoTransitionException e) {
                    String err = "Cannot find next status for " + event + " as current status is " + currentStatus + " for agent " + hostId;
                    s_logger.debug(err);
                    throw new CloudRuntimeException(err);
                }
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    protected boolean handleDisconnectWithInvestigation(AgentAttache attache, Status.Event event) {
        long hostId = attache.getId();
        HostVO host = _hostDao.findById(hostId);

        if (host != null) {
            Status nextStatus = null;
            try {
                nextStatus = host.getStatus().getNextStatus(event);
            } catch (NoTransitionException ne) {
                /* Agent may be currently in status of Down, Alert, Removed, namely there is no next status for some events.
                 * Why this can happen? Ask God not me. I hate there was no piece of comment for code handling race condition.
                 * God knew what race condition the code dealt with!
                 */
            }

            if (nextStatus == Status.Alert) {
                /* OK, we are going to the bad status, let's see what happened */
                s_logger.info("Investigating why host " + hostId + " has disconnected with event " + event);

                final Status determinedState = investigate(attache);
                // if state cannot be determined do nothing and bail out
                if (determinedState == null) {
                    s_logger.warn("Agent state cannot be determined, do nothing");
                    return false;
                }

                final Status currentStatus = host.getStatus();
                s_logger.info("The state determined is " + determinedState);

                if (determinedState == Status.Down) {
                    s_logger.error("Host is down: " + host.getId() + "-" + host.getName() + ".  Starting HA on the VMs");
                    event = Status.Event.HostDown;
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            Host h = _hostDao.findById(hostId);
            if (h == null || h.getRemoved() != null) {
                s_logger.debug("Host with id " + hostId + " doesn't exist");
                return null;
            }
            Status status = h.getStatus();
            if (!status.equals(Status.Up) && !status.equals(Status.Connecting)) {
                s_logger.debug("Can not send command " + cmd + " due to Host " + hostId + " is not up");
                return null;
            }
            final Answer answer = send(hostId, cmd);
            if (answer == null) {
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                continue;
            }
            // get the data center IP address, find a host on the pod, use that host to ping the data center IP address
            List<Long> otherHosts = findHostByPod(vmHost.getPodId(), vm.getHostId());
            for (Long otherHost : otherHosts) {
                Status vmState = testIpAddress(otherHost, nic.getIp4Address());
                if (vmState == null) {
                    // can't get information from that host, try the next one
                    continue;
                }
                if (vmState == Status.Up) {
                    if (s_logger.isDebugEnabled()) {
                        s_logger.debug("successfully pinged vm's private IP (" + vm.getPrivateIpAddress() + "), returning that the VM is up");
                    }
                    return Boolean.TRUE;
                } else if (vmState == Status.Down) {
                    // We can't ping the VM directly...if we can ping the host, then report the VM down.
                    // If we can't ping the host, then we don't have enough information.
                    Status vmHostState = testIpAddress(otherHost, vmHost.getPrivateIpAddress());
                    if ((vmHostState != null) && (vmHostState == Status.Up)) {
                        if (s_logger.isDebugEnabled()) {
                            s_logger.debug("successfully pinged vm's host IP (" + vmHost.getPrivateIpAddress() + "), but could not ping VM, returning that the VM is down");
                        }
                        return Boolean.FALSE;
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        return null;
    }

    @Override
    public Boolean isVmAlive(VMInstanceVO vm, HostVO host) {
        Status status = isAgentAlive(host);
        if (status == null) {
            return null;
        }
        return status == Status.Up ? true : null;
    }
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        for (Long hostId : otherHosts) {

            if (s_logger.isDebugEnabled()) {
                s_logger.debug("sending ping from (" + hostId + ") to agent's host ip address (" + agent.getPrivateIpAddress() + ")");
            }
            Status hostState = testIpAddress(hostId, agent.getPrivateIpAddress());
            if (hostState == null) {
                continue;
            }
            if (hostState == Status.Up) {
                if (s_logger.isDebugEnabled()) {
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        if (host == null) {
            return null;
        }

        final Enumeration<Investigator> en = _investigators.enumeration();
        Status hostState = null;
        Investigator investigator = null;
        while (en.hasMoreElements()) {
            investigator = en.nextElement();
            hostState = investigator.isAgentAlive(host);
            if (hostState != null) {
                if (s_logger.isDebugEnabled()) {
                    s_logger.debug(investigator.getName() + " was able to determine host " + hostId + " is in " + hostState.toString());
                }
                return hostState;
            }
            if (s_logger.isDebugEnabled()) {
                s_logger.debug(investigator.getName() + " unable to determine the state of the host.  Moving on.");
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Related Classes of com.cloud.host.Status

  • com.cloud.agent.manager.AgentManagerImpl
  • com.cloud.ha.HighAvailabilityManagerImpl
  • com.cloud.ha.HypervInvestigator
  • com.cloud.ha.KVMInvestigator
  • com.cloud.ha.ManagementIPSystemVMInvestigator
  • com.cloud.ha.UserVmDomRInvestigator
  • com.cloud.ha.XenServerInvestigator
  • org.apache.cloudstack.api.agent.test.CheckOnHostCommandTest
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