Examples with ClusterMO com.cloud.hypervisor.vmware.mo.ClusterMO used on opensource projects

Example 6 with ClusterMO

use of com.cloud.hypervisor.vmware.mo.ClusterMO in project cloudstack by apache.

the class VmwareResource method execute.

private UnPlugNicAnswer execute(UnPlugNicCommand cmd) {
    if (s_logger.isInfoEnabled()) {
        s_logger.info("Executing resource UnPlugNicCommand " + _gson.toJson(cmd));
    }
    VmwareContext context = getServiceContext();
    try {
        VmwareHypervisorHost hyperHost = getHyperHost(context);
        String vmName = cmd.getVmName();
        VirtualMachineMO vmMo = hyperHost.findVmOnHyperHost(vmName);
        if (vmMo == null) {
            if (hyperHost instanceof HostMO) {
                ClusterMO clusterMo = new ClusterMO(hyperHost.getContext(), ((HostMO) hyperHost).getParentMor());
                vmMo = clusterMo.findVmOnHyperHost(vmName);
            }
        }
        if (vmMo == null) {
            String msg = "VM " + vmName + " no longer exists to execute UnPlugNic command";
            s_logger.error(msg);
            throw new Exception(msg);
        }
        /*
            if(!isVMWareToolsInstalled(vmMo)){
                String errMsg = "vmware tools not installed or not running, cannot remove nic from vm " + vmName;
                s_logger.debug(errMsg);
                return new UnPlugNicAnswer(cmd, false, "Unable to execute unPlugNicCommand due to " + errMsg);
            }
             */
        VirtualDevice nic = findVirtualNicDevice(vmMo, cmd.getNic().getMac());
        if (nic == null) {
            return new UnPlugNicAnswer(cmd, true, "success");
        }
        VirtualMachineConfigSpec vmConfigSpec = new VirtualMachineConfigSpec();
        //VirtualDeviceConfigSpec[] deviceConfigSpecArray = new VirtualDeviceConfigSpec[1];
        VirtualDeviceConfigSpec deviceConfigSpec = new VirtualDeviceConfigSpec();
        deviceConfigSpec.setDevice(nic);
        deviceConfigSpec.setOperation(VirtualDeviceConfigSpecOperation.REMOVE);
        vmConfigSpec.getDeviceChange().add(deviceConfigSpec);
        if (!vmMo.configureVm(vmConfigSpec)) {
            throw new Exception("Failed to configure devices when running unplugNicCommand");
        }
        return new UnPlugNicAnswer(cmd, true, "success");
    } catch (Exception e) {
        s_logger.error("Unexpected exception: ", e);
        return new UnPlugNicAnswer(cmd, false, "Unable to execute unPlugNicCommand due to " + e.toString());
    }
}

Example 7 with ClusterMO

use of com.cloud.hypervisor.vmware.mo.ClusterMO in project cloudstack by apache.

the class VmwareResource method execute.

protected Answer execute(PingTestCommand cmd) {
    if (s_logger.isInfoEnabled()) {
        s_logger.info("Executing resource PingTestCommand: " + _gson.toJson(cmd));
    }
    String controlIp = cmd.getRouterIp();
    if (controlIp != null) {
        String args = " -c 1 -n -q " + cmd.getPrivateIp();
        try {
            VmwareManager mgr = getServiceContext().getStockObject(VmwareManager.CONTEXT_STOCK_NAME);
            Pair<Boolean, String> result = SshHelper.sshExecute(controlIp, DefaultDomRSshPort, "root", mgr.getSystemVMKeyFile(), null, "/bin/ping" + args);
            if (result.first())
                return new Answer(cmd);
        } catch (Exception e) {
            s_logger.error("Unable to execute ping command on DomR (" + controlIp + "), domR may not be ready yet. failure due to " + VmwareHelper.getExceptionMessage(e), e);
        }
        return new Answer(cmd, false, "PingTestCommand failed");
    } else {
        VmwareContext context = getServiceContext();
        VmwareHypervisorHost hyperHost = getHyperHost(context);
        try {
            HostMO hostMo = (HostMO) hyperHost;
            ClusterMO clusterMo = new ClusterMO(context, hostMo.getHyperHostCluster());
            VmwareManager mgr = context.getStockObject(VmwareManager.CONTEXT_STOCK_NAME);
            List<Pair<ManagedObjectReference, String>> hosts = clusterMo.getClusterHosts();
            for (Pair<ManagedObjectReference, String> entry : hosts) {
                HostMO hostInCluster = new HostMO(context, entry.first());
                String hostIp = hostInCluster.getHostManagementIp(mgr.getManagementPortGroupName());
                if (hostIp != null && hostIp.equals(cmd.getComputingHostIp())) {
                    if (hostInCluster.isHyperHostConnected())
                        return new Answer(cmd);
                    else
                        return new Answer(cmd, false, "PingTestCommand failed");
                }
            }
        } catch (Exception e) {
            s_logger.error("Unable to execute ping command on host (" + cmd.getComputingHostIp() + "). failure due to " + VmwareHelper.getExceptionMessage(e), e);
        }
        return new Answer(cmd, false, "PingTestCommand failed");
    }
}

Example 8 with ClusterMO

use of com.cloud.hypervisor.vmware.mo.ClusterMO in project cloudstack by apache.

the class VmwareCleanupMaid method gcLeftOverVMs.

public static synchronized void gcLeftOverVMs(VmwareContext context) {
    List<VmwareCleanupMaid> l = s_leftoverDummyVMs.get(context.getServerAddress());
    VmwareManager mgr = context.getStockObject(VmwareManager.CONTEXT_STOCK_NAME);
    assert (mgr != null);
    if (l != null && l.size() > 0) {
        for (VmwareCleanupMaid cleanupMaid : l) {
            try {
                VirtualMachineMO vmMo = null;
                if (cleanupMaid.getDatacenterMorValue() != null) {
                    DatacenterMO dcMo = new DatacenterMO(context, "Datacenter", cleanupMaid.getDatacenterMorValue());
                    vmMo = dcMo.findVm(cleanupMaid.getVmName());
                } else {
                    assert (cleanupMaid.getHostMorValue() != null);
                    HostMO hostMo = new HostMO(context, "HostSystem", cleanupMaid.getHostMorValue());
                    ClusterMO clusterMo = new ClusterMO(context, hostMo.getHyperHostCluster());
                    vmMo = clusterMo.findVmOnHyperHost(cleanupMaid.getVmName());
                }
                if (vmMo != null) {
                    s_logger.info("Found left over dummy VM " + cleanupMaid.getVmName() + ", destroy it");
                    vmMo.destroy();
                }
            } catch (Throwable e) {
                s_logger.warn("Unable to destroy left over dummy VM " + cleanupMaid.getVmName());
            } finally {
            // FIXME                    mgr.popCleanupCheckpoint(cleanupMaid.getCheckPoint());
            }
        }
        l.clear();
    }
}

Example 9 with ClusterMO

use of com.cloud.hypervisor.vmware.mo.ClusterMO in project cloudstack by apache.

the class VmwareServerDiscoverer method find.

@Override
public Map<? extends ServerResource, Map<String, String>> find(long dcId, Long podId, Long clusterId, URI url, String username, String password, List<String> hostTags) throws DiscoveryException {
    if (s_logger.isInfoEnabled())
        s_logger.info("Discover host. dc: " + dcId + ", pod: " + podId + ", cluster: " + clusterId + ", uri host: " + url.getHost());
    if (podId == null) {
        if (s_logger.isInfoEnabled())
            s_logger.info("No pod is assigned, assuming that it is not for vmware and skip it to next discoverer");
        return null;
    }
    boolean failureInClusterDiscovery = true;
    String vsmIp = "";
    ClusterVO cluster = _clusterDao.findById(clusterId);
    if (cluster == null || cluster.getHypervisorType() != HypervisorType.VMware) {
        if (s_logger.isInfoEnabled())
            s_logger.info("invalid cluster id or cluster is not for VMware hypervisors");
        return null;
    }
    Map<String, String> clusterDetails = _clusterDetailsDao.findDetails(clusterId);
    boolean legacyZone = _vmwareMgr.isLegacyZone(dcId);
    boolean usernameNotProvided = (username == null || username.isEmpty());
    boolean passwordNotProvided = (password == null || password.isEmpty());
    //Check if NOT a legacy zone.
    if (!legacyZone) {
        // Retrieve VMware DC associated with specified zone
        VmwareDatacenterVO vmwareDc = fetchVmwareDatacenterByZone(dcId);
        // If either or both not provided, try to retrieve & use the credentials from database, which are provided earlier while adding VMware DC to zone.
        if (usernameNotProvided || passwordNotProvided) {
            // Retrieve credentials associated with VMware DC
            s_logger.info("Username and/or Password not provided while adding cluster to cloudstack zone. " + "Hence using both username & password provided while adding VMware DC to CloudStack zone.");
            username = vmwareDc.getUser();
            password = vmwareDc.getPassword();
            clusterDetails.put("username", username);
            clusterDetails.put("password", password);
            _clusterDetailsDao.persist(clusterId, clusterDetails);
        }
        String updatedInventoryPath = validateCluster(url, vmwareDc);
        try {
            if (!URLDecoder.decode(url.getPath(), "UTF-8").equals(updatedInventoryPath)) {
                // If url from API doesn't specify DC then update url in database with DC associated with this zone.
                clusterDetails.put("url", url.getScheme() + "://" + url.getHost() + updatedInventoryPath);
                _clusterDetailsDao.persist(clusterId, clusterDetails);
            }
        } catch (UnsupportedEncodingException e) {
            throw new DiscoveredWithErrorException("Unable to decode URL path, URL path : " + url.getPath(), e);
        }
    } else {
        // For legacy zones insist on the old model of asking for credentials for each cluster being added.
        if (usernameNotProvided) {
            if (passwordNotProvided) {
                throw new InvalidParameterValueException("Please provide username & password to add this cluster to zone");
            } else {
                throw new InvalidParameterValueException("Please provide username to add this cluster to zone");
            }
        } else if (passwordNotProvided) {
            throw new InvalidParameterValueException("Please provide password to add this cluster to zone");
        }
    }
    List<HostVO> hosts = _resourceMgr.listAllHostsInCluster(clusterId);
    if (hosts != null && hosts.size() > 0) {
        int maxHostsPerCluster = _hvCapabilitiesDao.getMaxHostsPerCluster(hosts.get(0).getHypervisorType(), hosts.get(0).getHypervisorVersion());
        if (hosts.size() >= maxHostsPerCluster) {
            String msg = "VMware cluster " + cluster.getName() + " is too big to add new host, current size: " + hosts.size() + ", max. size: " + maxHostsPerCluster;
            s_logger.error(msg);
            throw new DiscoveredWithErrorException(msg);
        }
    }
    String privateTrafficLabel = null;
    String publicTrafficLabel = null;
    String guestTrafficLabel = null;
    Map<String, String> vsmCredentials = null;
    VirtualSwitchType defaultVirtualSwitchType = VirtualSwitchType.StandardVirtualSwitch;
    String paramGuestVswitchType = null;
    String paramGuestVswitchName = null;
    String paramPublicVswitchType = null;
    String paramPublicVswitchName = null;
    VmwareTrafficLabel guestTrafficLabelObj = new VmwareTrafficLabel(TrafficType.Guest);
    VmwareTrafficLabel publicTrafficLabelObj = new VmwareTrafficLabel(TrafficType.Public);
    DataCenterVO zone = _dcDao.findById(dcId);
    NetworkType zoneType = zone.getNetworkType();
    _readGlobalConfigParameters();
    // Private traffic will be only on standard vSwitch for now.
    if (useDVS) {
        // Parse url parameters for type of vswitch and name of vswitch specified at cluster level
        paramGuestVswitchType = _urlParams.get(ApiConstants.VSWITCH_TYPE_GUEST_TRAFFIC);
        paramGuestVswitchName = _urlParams.get(ApiConstants.VSWITCH_NAME_GUEST_TRAFFIC);
        paramPublicVswitchType = _urlParams.get(ApiConstants.VSWITCH_TYPE_PUBLIC_TRAFFIC);
        paramPublicVswitchName = _urlParams.get(ApiConstants.VSWITCH_NAME_PUBLIC_TRAFFIC);
        defaultVirtualSwitchType = getDefaultVirtualSwitchType();
    }
    // Zone level vSwitch Type depends on zone level traffic labels
    //
    // User can override Zone wide vswitch type (for public and guest) by providing following optional parameters in addClusterCmd
    // param "guestvswitchtype" with valid values vmwaredvs, vmwaresvs, nexusdvs
    // param "publicvswitchtype" with valid values vmwaredvs, vmwaresvs, nexusdvs
    //
    // Format of label is <VSWITCH>,<VLANID>,<VSWITCHTYPE>
    // If a field <VLANID> OR <VSWITCHTYPE> is not present leave it empty.
    // Ex: 1) vswitch0
    // 2) dvswitch0,200,vmwaredvs
    // 3) nexusepp0,300,nexusdvs
    // 4) vswitch1,400,vmwaresvs
    // 5) vswitch0
    // default vswitchtype is 'vmwaresvs'.
    // <VSWITCHTYPE> 'vmwaresvs' is for vmware standard vswitch
    // <VSWITCHTYPE> 'vmwaredvs' is for vmware distributed virtual switch
    // <VSWITCHTYPE> 'nexusdvs' is for cisco nexus distributed virtual switch
    // Get zone wide traffic labels for Guest traffic and Public traffic
    guestTrafficLabel = _netmgr.getDefaultGuestTrafficLabel(dcId, HypervisorType.VMware);
    // Process traffic label information provided at zone level and cluster level
    guestTrafficLabelObj = getTrafficInfo(TrafficType.Guest, guestTrafficLabel, defaultVirtualSwitchType, paramGuestVswitchType, paramGuestVswitchName, clusterId);
    if (zoneType == NetworkType.Advanced) {
        // Get zone wide traffic label for Public traffic
        publicTrafficLabel = _netmgr.getDefaultPublicTrafficLabel(dcId, HypervisorType.VMware);
        // Process traffic label information provided at zone level and cluster level
        publicTrafficLabelObj = getTrafficInfo(TrafficType.Public, publicTrafficLabel, defaultVirtualSwitchType, paramPublicVswitchType, paramPublicVswitchName, clusterId);
        // Configuration Check: A physical network cannot be shared by different types of virtual switches.
        //
        // Check if different vswitch types are chosen for same physical network
        // 1. Get physical network for guest traffic - multiple networks
        // 2. Get physical network for public traffic - single network
        // See if 2 is in 1
        //  if no - pass
        //  if yes - compare publicTrafficLabelObj.getVirtualSwitchType() == guestTrafficLabelObj.getVirtualSwitchType()
        //      true  - pass
        //      false - throw exception - fail cluster add operation
        List<? extends PhysicalNetwork> pNetworkListGuestTraffic = _netmgr.getPhysicalNtwksSupportingTrafficType(dcId, TrafficType.Guest);
        List<? extends PhysicalNetwork> pNetworkListPublicTraffic = _netmgr.getPhysicalNtwksSupportingTrafficType(dcId, TrafficType.Public);
        // Public network would be on single physical network hence getting first object of the list would suffice.
        PhysicalNetwork pNetworkPublic = pNetworkListPublicTraffic.get(0);
        if (pNetworkListGuestTraffic.contains(pNetworkPublic)) {
            if (publicTrafficLabelObj.getVirtualSwitchType() != guestTrafficLabelObj.getVirtualSwitchType()) {
                String msg = "Both public traffic and guest traffic is over same physical network " + pNetworkPublic + ". And virtual switch type chosen for each traffic is different" + ". A physical network cannot be shared by different types of virtual switches.";
                s_logger.error(msg);
                throw new InvalidParameterValueException(msg);
            }
        }
    }
    privateTrafficLabel = _netmgr.getDefaultManagementTrafficLabel(dcId, HypervisorType.VMware);
    if (privateTrafficLabel != null) {
        s_logger.info("Detected private network label : " + privateTrafficLabel);
    }
    Pair<Boolean, Long> vsmInfo = new Pair<Boolean, Long>(false, 0L);
    if (nexusDVS && (guestTrafficLabelObj.getVirtualSwitchType() == VirtualSwitchType.NexusDistributedVirtualSwitch) || ((zoneType == NetworkType.Advanced) && (publicTrafficLabelObj.getVirtualSwitchType() == VirtualSwitchType.NexusDistributedVirtualSwitch))) {
        // 2) Atleast 1 traffic type uses Nexus distributed virtual switch as backend.
        if (zoneType != NetworkType.Basic) {
            publicTrafficLabel = _netmgr.getDefaultPublicTrafficLabel(dcId, HypervisorType.VMware);
            if (publicTrafficLabel != null) {
                s_logger.info("Detected public network label : " + publicTrafficLabel);
            }
        }
        // Get physical network label
        guestTrafficLabel = _netmgr.getDefaultGuestTrafficLabel(dcId, HypervisorType.VMware);
        if (guestTrafficLabel != null) {
            s_logger.info("Detected guest network label : " + guestTrafficLabel);
        }
        // Before proceeding with validation of Nexus 1000v VSM check if an instance of Nexus 1000v VSM is already associated with this cluster.
        boolean clusterHasVsm = _vmwareMgr.hasNexusVSM(clusterId);
        if (!clusterHasVsm) {
            vsmIp = _urlParams.get("vsmipaddress");
            String vsmUser = _urlParams.get("vsmusername");
            String vsmPassword = _urlParams.get("vsmpassword");
            String clusterName = cluster.getName();
            try {
                vsmInfo = _nexusElement.validateAndAddVsm(vsmIp, vsmUser, vsmPassword, clusterId, clusterName);
            } catch (ResourceInUseException ex) {
                DiscoveryException discEx = new DiscoveryException(ex.getLocalizedMessage() + ". The resource is " + ex.getResourceName());
                throw discEx;
            }
        }
        vsmCredentials = _vmwareMgr.getNexusVSMCredentialsByClusterId(clusterId);
    }
    VmwareContext context = null;
    try {
        context = VmwareContextFactory.create(url.getHost(), username, password);
        if (privateTrafficLabel != null)
            context.registerStockObject("privateTrafficLabel", privateTrafficLabel);
        if (nexusDVS) {
            if (vsmCredentials != null) {
                s_logger.info("Stocking credentials of Nexus VSM");
                context.registerStockObject("vsmcredentials", vsmCredentials);
            }
        }
        List<ManagedObjectReference> morHosts = _vmwareMgr.addHostToPodCluster(context, dcId, podId, clusterId, URLDecoder.decode(url.getPath(), "UTF-8"));
        if (morHosts == null)
            s_logger.info("Found 0 hosts.");
        if (privateTrafficLabel != null)
            context.uregisterStockObject("privateTrafficLabel");
        if (morHosts == null) {
            s_logger.error("Unable to find host or cluster based on url: " + URLDecoder.decode(url.getPath(), "UTF-8"));
            return null;
        }
        ManagedObjectReference morCluster = null;
        clusterDetails = _clusterDetailsDao.findDetails(clusterId);
        if (clusterDetails.get("url") != null) {
            URI uriFromCluster = new URI(UriUtils.encodeURIComponent(clusterDetails.get("url")));
            morCluster = context.getHostMorByPath(URLDecoder.decode(uriFromCluster.getPath(), "UTF-8"));
            if (morCluster == null || !morCluster.getType().equalsIgnoreCase("ClusterComputeResource")) {
                s_logger.warn("Cluster url does not point to a valid vSphere cluster, url: " + clusterDetails.get("url"));
                return null;
            } else {
                ClusterMO clusterMo = new ClusterMO(context, morCluster);
                if (clusterMo.isHAEnabled()) {
                    clusterDetails.put("NativeHA", "true");
                    _clusterDetailsDao.persist(clusterId, clusterDetails);
                }
            }
        }
        if (!validateDiscoveredHosts(context, morCluster, morHosts)) {
            if (morCluster == null)
                s_logger.warn("The discovered host is not standalone host, can not be added to a standalone cluster");
            else
                s_logger.warn("The discovered host does not belong to the cluster");
            return null;
        }
        Map<VmwareResource, Map<String, String>> resources = new HashMap<VmwareResource, Map<String, String>>();
        for (ManagedObjectReference morHost : morHosts) {
            Map<String, String> details = new HashMap<String, String>();
            Map<String, Object> params = new HashMap<String, Object>();
            HostMO hostMo = new HostMO(context, morHost);
            details.put("url", hostMo.getHostName());
            details.put("username", username);
            details.put("password", password);
            String guid = morHost.getType() + ":" + morHost.getValue() + "@" + url.getHost();
            details.put("guid", guid);
            params.put("url", hostMo.getHostName());
            params.put("username", username);
            params.put("password", password);
            params.put("zone", Long.toString(dcId));
            params.put("pod", Long.toString(podId));
            params.put("cluster", Long.toString(clusterId));
            params.put("guid", guid);
            if (privateTrafficLabel != null) {
                params.put("private.network.vswitch.name", privateTrafficLabel);
            }
            params.put("guestTrafficInfo", guestTrafficLabelObj);
            params.put("publicTrafficInfo", publicTrafficLabelObj);
            params.put("router.aggregation.command.each.timeout", _configDao.getValue(Config.RouterAggregationCommandEachTimeout.toString()));
            VmwareResource resource = new VmwareResource();
            try {
                resource.configure("VMware", params);
            } catch (ConfigurationException e) {
                _alertMgr.sendAlert(AlertManager.AlertType.ALERT_TYPE_HOST, dcId, podId, "Unable to add " + url.getHost(), "Error is " + e.getMessage());
                s_logger.warn("Unable to instantiate " + url.getHost(), e);
            }
            resource.start();
            resources.put(resource, details);
        }
        // place a place holder guid derived from cluster ID
        try {
            cluster.setGuid(UUID.nameUUIDFromBytes(String.valueOf(clusterId).getBytes("UTF-8")).toString());
        } catch (UnsupportedEncodingException e) {
            throw new DiscoveredWithErrorException("Unable to create UUID based on string " + String.valueOf(clusterId) + ". Bad clusterId or UTF-8 encoding error.");
        }
        _clusterDao.update(clusterId, cluster);
        // Flag cluster discovery success
        failureInClusterDiscovery = false;
        return resources;
    } catch (DiscoveredWithErrorException e) {
        throw e;
    } catch (Exception e) {
        s_logger.warn("Unable to connect to Vmware vSphere server. service address: " + url.getHost() + ". " + e);
        return null;
    } finally {
        if (context != null)
            context.close();
        if (failureInClusterDiscovery && vsmInfo.first()) {
            try {
                s_logger.debug("Deleting Nexus 1000v VSM " + vsmIp + " because cluster discovery and addition to zone has failed.");
                _nexusElement.deleteCiscoNexusVSM(vsmInfo.second().longValue());
            } catch (Exception e) {
                s_logger.warn("Deleting Nexus 1000v VSM " + vsmIp + " failed.");
            }
        }
    }
}

Example 10 with ClusterMO

use of com.cloud.hypervisor.vmware.mo.ClusterMO in project cloudstack by apache.

the class VmwareResource method configureVnc.

protected OptionValue[] configureVnc(OptionValue[] optionsToMerge, VmwareHypervisorHost hyperHost, String vmName, String vncPassword, String keyboardLayout) throws Exception {
    VirtualMachineMO vmMo = hyperHost.findVmOnHyperHost(vmName);
    VmwareManager mgr = hyperHost.getContext().getStockObject(VmwareManager.CONTEXT_STOCK_NAME);
    if (!mgr.beginExclusiveOperation(600))
        throw new Exception("Unable to begin exclusive operation, lock time out");
    try {
        int maxVncPorts = 64;
        int vncPort = 0;
        Random random = new Random();
        HostMO vmOwnerHost = vmMo.getRunningHost();
        ManagedObjectReference morParent = vmOwnerHost.getParentMor();
        HashMap<String, Integer> portInfo;
        if (morParent.getType().equalsIgnoreCase("ClusterComputeResource")) {
            ClusterMO clusterMo = new ClusterMO(vmOwnerHost.getContext(), morParent);
            portInfo = clusterMo.getVmVncPortsOnCluster();
        } else {
            portInfo = vmOwnerHost.getVmVncPortsOnHost();
        }
        // allocate first at 5900 - 5964 range
        Collection<Integer> existingPorts = portInfo.values();
        int val = random.nextInt(maxVncPorts);
        int startVal = val;
        do {
            if (!existingPorts.contains(5900 + val)) {
                vncPort = 5900 + val;
                break;
            }
            val = (++val) % maxVncPorts;
        } while (val != startVal);
        if (vncPort == 0) {
            s_logger.info("we've run out of range for ports between 5900-5964 for the cluster, we will try port range at 59000-60000");
            Pair<Integer, Integer> additionalRange = mgr.getAddiionalVncPortRange();
            maxVncPorts = additionalRange.second();
            val = random.nextInt(maxVncPorts);
            startVal = val;
            do {
                if (!existingPorts.contains(additionalRange.first() + val)) {
                    vncPort = additionalRange.first() + val;
                    break;
                }
                val = (++val) % maxVncPorts;
            } while (val != startVal);
        }
        if (vncPort == 0) {
            throw new Exception("Unable to find an available VNC port on host");
        }
        if (s_logger.isInfoEnabled()) {
            s_logger.info("Configure VNC port for VM " + vmName + ", port: " + vncPort + ", host: " + vmOwnerHost.getHyperHostName());
        }
        return VmwareHelper.composeVncOptions(optionsToMerge, true, vncPassword, vncPort, keyboardLayout);
    } finally {
        try {
            mgr.endExclusiveOperation();
        } catch (Throwable e) {
            assert (false);
            s_logger.error("Unexpected exception ", e);
        }
    }
}