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&PRODUCT; provides a variety of settings you can use to set limits, configure features, and enable or disable features in the cloud. Once your Management Server is running, you might need to set some of these configuration parameters, depending on what optional features you are setting up. You can set default values at the global level, which will be in effect throughout the cloud unless you override them at a lower level. You can make local settings, which will override the global configuration parameter values, at the level of an account, zone, cluster, or primary storage. The documentation for each &PRODUCT; feature should direct you to the names of the applicable parameters. The following table shows a few of the more useful parameters. Field Value management.network.cidr A CIDR that describes the network that the management CIDRs reside on. This variable must be set for deployments that use vSphere. It is recommended to be set for other deployments as well. Example: 192.168.3.0/24. xen.setup.multipath For XenServer nodes, this is a true/false variable that instructs CloudStack to enable iSCSI multipath on the XenServer Hosts when they are added. This defaults to false. Set it to true if you would like CloudStack to enable multipath. If this is true for a NFS-based deployment multipath will still be enabled on the XenServer host. However, this does not impact NFS operation and is harmless. secstorage.allowed.internal.sites This is used to protect your internal network from rogue attempts to download arbitrary files using the template download feature. This is a comma-separated list of CIDRs. If a requested URL matches any of these CIDRs the Secondary Storage VM will use the private network interface to fetch the URL. Other URLs will go through the public interface. We suggest you set this to 1 or 2 hardened internal machines where you keep your templates. For example, set it to 192.168.1.66/32. use.local.storage Determines whether CloudStack will use storage that is local to the Host for data disks, templates, and snapshots. By default CloudStack will not use this storage. You should change this to true if you want to use local storage and you understand the reliability and feature drawbacks to choosing local storage. host This is the IP address of the Management Server. If you are using multiple Management Servers you should enter a load balanced IP address that is reachable via the private network. default.page.size Maximum number of items per page that can be returned by a CloudStack API command. The limit applies at the cloud level and can vary from cloud to cloud. You can override this with a lower value on a particular API call by using the page and page size API command parameters. For more information, see the Developer's Guide. Default: 500. ha.tag The label you want to use throughout the cloud to designate certain hosts as dedicated HA hosts. These hosts will be used only for HA-enabled VMs that are restarting due to the failure of another host. For example, you could set this to ha_host. Specify the ha.tag value as a host tag when you add a new host to the cloud.

Use the following steps to set global configuration parameters. These values will be the defaults in effect throughout your &PRODUCT; deployment. Log in to the UI as administrator. In the left navigation bar, click Global Settings. In Select View, choose one of the following: Global Settings. This displays a list of the parameters with brief descriptions and current values. Hypervisor Capabilities. This displays a list of hypervisor versions with the maximum number of guests supported for each. Use the search box to narrow down the list to those you are interested in. In the Actions column, click the Edit icon to modify a value. If you are viewing Hypervisor Capabilities, you must click the name of the hypervisor first to display the editing screen.

Use the following steps to set local configuration parameters for an account, zone, cluster, or primary storage. These values will override the global configuration settings. Log in to the UI as administrator. In the left navigation bar, click Infrastructure or Accounts, depending on where you want to set a value. Find the name of the particular resource that you want to work with. For example, if you are in Infrastructure, click View All on the Zones, Clusters, or Primary Storage area. Click the name of the resource where you want to set a limit. Click the Settings tab. Use the search box to narrow down the list to those you are interested in. In the Actions column, click the Edit icon to modify a value.

The following global configuration parameters have been made more granular. The parameters are listed under three different scopes: account, cluster, and zone. Field Field Value account remote.access.vpn.client.iprange The range of IPs to be allocated to remotely access the VPN clients. The first IP in the range is used by the VPN server. account allow.public.user.templates If false, users will not be able to create public templates. account use.system.public.ips If true and if an account has one or more dedicated public IP ranges, IPs are acquired from the system pool after all the IPs dedicated to the account have been consumed. account use.system.guest.vlans If true and if an account has one or more dedicated guest VLAN ranges, VLANs are allocated from the system pool after all the VLANs dedicated to the account have been consumed. cluster cluster.storage.allocated.capacity.notificationthreshold The percentage, as a value between 0 and 1, of allocated storage utilization above which alerts are sent that the storage is below the threshold. cluster cluster.storage.capacity.notificationthreshold The percentage, as a value between 0 and 1, of storage utilization above which alerts are sent that the available storage is below the threshold. cluster cluster.cpu.allocated.capacity.notificationthreshold The percentage, as a value between 0 and 1, of cpu utilization above which alerts are sent that the available CPU is below the threshold. cluster cluster.memory.allocated.capacity.notificationthreshold The percentage, as a value between 0 and 1, of memory utilization above which alerts are sent that the available memory is below the threshold. cluster cluster.cpu.allocated.capacity.disablethreshold The percentage, as a value between 0 and 1, of CPU utilization above which allocators will disable that cluster from further usage. Keep the corresponding notification threshold lower than this value to be notified beforehand. cluster cluster.memory.allocated.capacity.disablethreshold The percentage, as a value between 0 and 1, of memory utilization above which allocators will disable that cluster from further usage. Keep the corresponding notification threshold lower than this value to be notified beforehand. cluster cpu.overprovisioning.factor Used for CPU over-provisioning calculation; the available CPU will be the mathematical product of actualCpuCapacity and cpu.overprovisioning.factor. cluster mem.overprovisioning.factor Used for memory over-provisioning calculation. cluster vmware.reserve.cpu Specify whether or not to reserve CPU when not over-provisioning; In case of CPU over-provisioning, CPU is always reserved. cluster vmware.reserve.mem Specify whether or not to reserve memory when not over-provisioning; In case of memory over-provisioning memory is always reserved. zone pool.storage.allocated.capacity.disablethreshold The percentage, as a value between 0 and 1, of allocated storage utilization above which allocators will disable that pool because the available allocated storage is below the threshold. zone pool.storage.capacity.disablethreshold The percentage, as a value between 0 and 1, of storage utilization above which allocators will disable the pool because the available storage capacity is below the threshold. zone storage.overprovisioning.factor Used for storage over-provisioning calculation; available storage will be the mathematical product of actualStorageSize and storage.overprovisioning.factor. zone network.throttling.rate Default data transfer rate in megabits per second allowed in a network. zone guest.domain.suffix Default domain name for VMs inside a virtual networks with a router. zone router.template.xen Name of the default router template on Xenserver. zone router.template.kvm Name of the default router template on KVM. zone router.template.vmware Name of the default router template on VMware. zone enable.dynamic.scale.vm Enable or diable dynamically scaling of a VM. zone use.external.dns Bypass internal DNS, and use the external DNS1 and DNS2 zone blacklisted.routes Routes that are blacklisted cannot be used for creating static routes for a VPC Private Gateway.