- Preface
-
- Configuring the Fabric Interconnects
- Configuring Ports and Port Channels
- Configuring Communication Services
- Configuring Authentication
- Configuring Organizations
- Configuring Role-Based Access Control
- Configuring DNS Servers
- Configuring System-Related Policies
- Managing Licenses
- Managing Virtual Interfaces
- Registering Cisco UCS Domains with Cisco UCS Central
- Index
- Boot Policy
- Creating a Boot Policy
- SAN Boot
- iSCSI Boot
- iSCSI Boot Process
- iSCSI Boot Guidelines and Prerequisites
- Initiator IQN Configuration
- Enabling MPIO on Windows
- Configuring iSCSI Boot
- Creating an iSCSI Adapter Policy
- Deleting an iSCSI Adapter Policy
- Creating an iSCSI Authentication Profile
- Deleting an iSCSI Authentication Profile
- Creating an iSCSI Initiator IP Pool
- Creating an iSCSI Boot Policy
- Creating an iSCSI vNIC for a Service Profile
- Deleting an iSCSI vNIC from a Service Profile
- Setting the Initiator IQN at the Service Profile Level
- Changing the Initiator IQN at the Service Profile Level
- Setting iSCSI Boot Parameters
- Modifying iSCSI Boot Parameters
- IQN Pools
- Creating an IQN Pool
- Adding a Block to an IQN Pool
- Deleting a Block from an IQN Pool
- Deleting an IQN Pool
- LAN Boot
- Local Disk Boot
- Virtual Media Boot
- Deleting a Boot Policy
Configuring Server Boot
This chapter includes the following sections:
- Boot Policy
- Creating a Boot Policy
- SAN Boot
- iSCSI Boot
- LAN Boot
- Local Disk Boot
- Virtual Media Boot
- Deleting a Boot Policy
Boot Policy
The boot policy determines the following:
-
Configuration of the boot device
-
Location from which the server boots
-
Order in which boot devices are invoked
For example, you can choose to have associated servers boot from a local device, such as a local disk or CD-ROM (VMedia), or you can select a SAN boot or a LAN (PXE) boot.
You must include this policy in a service profile, and that service profile must be associated with a server for it to take effect. If you do not include a boot policy in a service profile, the server uses the default settings in the BIOS to determine the boot order.
Note | Changes to a boot policy might be propagated to all servers created with an updating service profile template that includes that boot policy. Reassociation of the service profile with the server to rewrite the boot order information in the BIOS is automatically triggered. |
Creating a Boot Policy
You can also create a local boot policy that is restricted to a service profile or service profile template. However, we recommend that you create a global boot policy that can be included in multiple service profiles or service profile templates.
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. |
Step 4 | Right-click
Boot Policies and select
Create Boot Policy.
The Create Boot Policy wizard displays. |
Step 5 | Enter a unique name and description for the policy.
This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved. |
Step 6 | (Optional)To reboot all servers that use this boot policy after you make
changes to the boot order, check the
Reboot on Boot Order
Change check box.
In the Cisco UCS Manager GUI, if the Reboot on Boot Order Change check box is checked for a boot policy, and if CD-ROM or Floppy is the last device in the boot order, deleting or adding the device does not directly affect the boot order and the server does not reboot. |
Step 7 | (Optional)If desired, check the Enforce vNIC/vHBA/iSCSI Name check box.
|
Step 8 | Configure one or more of the following boot options for the boot policy and set their boot order:
|
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.
SAN Boot
You can configure a boot policy to boot one or more servers from an operating system image on the SAN. The boot policy can include a primary and a secondary SAN boot. If the primary boot fails, the server attempts to boot from the secondary.
We recommend that you use a SAN boot, because it offers the most service profile mobility within the system. If you boot from the SAN when you move a service profile from one server to another, the new server boots from the exact same operating system image. Therefore, the new server appears to be the exact same server to the network.
To use a SAN boot, ensure that the following is configured:
Configuring a SAN Boot for a Boot Policy
You can also create a local boot policy that is restricted to a service profile or service profile template. However, we recommend that you create a global boot policy that can be included in multiple service profiles or service profile templates.
Tip | If you configure a local disk and a SAN LUN for the boot order storage type and the operating system or logical volume manager (LVM) is configured incorrectly, the server might boot from the local disk rather than the SAN LUN. For example, on a server with Red Hat Linux installed, where the LVM is configured with default LV names and the boot order is configured with a SAN LUN and a local disk, Linux reports that there are two LVs with the same name and boots from the LV with the lowest SCSI ID, which could be the local disk. |
This procedure continues directly from Creating a Boot Policy.
Note | If you are creating a boot policy that boots the server from a SAN LUN and you require reliable SAN boot operations, we recommend that you first remove all local disks from servers associated with a service profile that includes the boot policy. |
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.
iSCSI Boot
iSCSI boot enables a server to boot its operating system from an iSCSI target machine located remotely over a network.
iSCSI boot is supported on the following Cisco UCS hardware:
Cisco UCS server blades that have the Cisco UCS M51KR-B Broadcom BCM57711 network adapter and use the default MAC address provided by Broadcom.
Cisco UCS M81KR Virtual Interface Card
Cisco UCS VIC-1240 Virtual Interface Card
Cisco UCS VIC-1280 Virtual Interface Card
There are prerequisites that must be met before you configure iSCSI boot. For a list of these prerequisites, see iSCSI Boot Guidelines and Prerequisites.
For a high-level procedure for implementing iSCSI boot, see Configuring iSCSI Boot.
- iSCSI Boot Process
- iSCSI Boot Guidelines and Prerequisites
- Initiator IQN Configuration
- Enabling MPIO on Windows
- Configuring iSCSI Boot
- Creating an iSCSI Adapter Policy
- Deleting an iSCSI Adapter Policy
- Creating an iSCSI Authentication Profile
- Deleting an iSCSI Authentication Profile
- Creating an iSCSI Initiator IP Pool
- Creating an iSCSI Boot Policy
- Creating an iSCSI vNIC for a Service Profile
- Deleting an iSCSI vNIC from a Service Profile
- Setting the Initiator IQN at the Service Profile Level
- Changing the Initiator IQN at the Service Profile Level
- Setting iSCSI Boot Parameters
- Modifying iSCSI Boot Parameters
- IQN Pools
- Creating an IQN Pool
- Adding a Block to an IQN Pool
- Deleting a Block from an IQN Pool
- Deleting an IQN Pool
iSCSI Boot Process
Cisco UCS Manager uses the iSCSI vNIC and iSCSI boot information created for the service profile in the association process to program the adapter, located on the server. After the adapter is programmed, the server reboots with the latest service profile values. After the power on self-test (POST), the adapter attempts to initialize using these service profile values. If the adapter can use the values and log in to its specified target, the adapter initializes and posts an iSCSI Boot Firmware Table (iBFT) to the host memory and a valid bootable LUN to the system BIOS. The iBFT that is posted to the host memory contains the initiator and target configuration that is programmed on the primary iSCSI VNIC.
Note | Previously, the host would see only one of the boot paths configured, depending on which path completed the LUN discovery first, and would boot from that path. Now, when there are two iSCSI boot vNICs configured, the host will see both of the boot paths. So for multipath configurations, a single IQN needs to be configured on both the boot vNICs If there are different IQNs configured on the boot vNICs on a host, the host will boot with the IQN that is configured on the boot vNIC with the lower PCI order. |
The next step, which is the installation of the operating system (OS), requires an OS that is iBFT capable. During installation of the OS, the OS installer scans the host memory for the iBFT table and uses the information in the iBFT to discover the boot device and create an iSCSI path to the target LUN. In some OS's a NIC driver is required to complete this path. If this step is successful, the OS installer finds the iSCSI target LUN on which to install the OS.
Note | The iBFT works at the OS installation software level and might not work with HBA mode (also known as TCP offload). Whether iBFT works with HBA mode depends on the OS capabilities during installation. Also, for a server that includes a Cisco UCS M51KR-B Broadcom BCM57711 adapter, the iBFT normally works at a maximum transmission unit (MTU) size of 1500, regardless of the MTU jumbo configuration. If the OS supports HBA mode, you might need to set HBA mode, dual-fabric support, and jumbo MTU size after the iSCSI installation process. |
iSCSI Boot Guidelines and Prerequisites
These guidelines and prerequisites must be met before configuring iSCSI boot:
After the iSCSI boot policies have been created, a user with ls-compute privileges can include them in a service profile or service profile template. However, a user with only ls-compute privileges cannot create iSCSI boot policies.
To set up iSCSI boot from a Windows 2008 server where the second vNIC (failover vNIC) must boot from an iSCSI LUN, consult Microsoft Knowledge Base Article 976042. Microsoft has a known issue where Windows might fail to boot from an iSCSI drive or cause a bugcheck error if the networking hardware is changed. To work around this issue, follow the resolution recommended by Microsoft.
The storage array must be licensed for iSCSI boot and the array side LUN masking must be properly configured.
Two IP addresses must be determined, one for each iSCSI initiator. If possible, the IP addresses should be on the same subnet as the storage array. The IP addresses are assigned statically or dynamically using the Dynamic Host Configuration Protocol (DHCP).
You cannot configure boot parameters in the Global boot policy. Instead, after configuring boot parameters, you need to include the boot policy in the appropriate service profile.
The operating system (OS) must be iSCSI Boot Firmware Table (iBFT) compatible.
- For Cisco UCS M51KR-B Broadcom
BCM57711 network adapters:
Servers that use iSCSI boot must contain the Cisco UCS M51KR-B Broadcom BCM57711 network adapter. For information on installing or replacing an adapter card, see the Cisco UCS B250 Extended Memory Blade Server Installation and Service Note. The service note is accessible from the Cisco UCS B-Series Servers Documentation Roadmap at http://www.cisco.com/go/unifiedcomputing/b-series-doc.
Set the MAC addresses on the iSCSI device.
If you are using the DHCP Vendor ID (Option 43), configure the MAC address of an iSCSI device in /etc/dhcpd.conf.
HBA mode (also known as TCP offload) and the boot to target setting are supported. However, only Windows OS supports HBA mode during installation.
Before installing the OS, disable the boot to target setting in the iSCSI adapter policy, then after installing the OS, reenable the boot to target setting.
NoteEach time you change an adapter policy setting, the adapter reboots to apply the new setting.
When installing the OS on the iSCSI target, the iSCSI target must be ordered before the device where the OS image resides. For example, if you are installing the OS on the iSCSI target from a CD, the boot order should be the iSCSI target and then the CD.
After the server has been iSCSI booted, do not modify the Initiator Name, Target name, LUN, iSCSI device IP, or Netmask/gateway using the Broadcom tool.
Do not interrupt the POST (power on self-test) process or the Cisco UCS M51KR-B Broadcom BCM57711 network adapter will fail to initialize.
For Cisco UCS M81KR Virtual Interface Card and Cisco UCS VIC-1240 Virtual Interface Card: Do not set MAC addresses on the iSCSI device.
HBA mode and the boot to target setting are not supported.
When installing the OS on the iSCSI target, the iSCSI target must be ordered after the device where the OS image resides. For example, if you are installing the OS on the iSCSI target from a CD, the boot order should be the CD and then the iSCSI target.
If you are using the DHCP Vendor ID (Option 43), the MAC address of the overlay vNIC needs to be configured in /etc/dhcpd.conf.
After the server has been iSCSI booted, do not modify the IP details of the overlay vNIC.
The VMware ESX/ESXi operating system does not support storing a core dump file to an iSCSI boot target LUN. Dump files must be written to a local disk.
Initiator IQN Configuration
Cisco UCS uses the following rules to determine the initiator IQN for an adapter iSCSI vNIC at the time a service profile is associated with a physical server:
An initiator IQN at the service profile level and at the iSCSI vNIC level cannot be used together in a service profile.
If an initiator IQN is specified at the service profile level, all of the adaptor iSCSI vNICs are configured to use the same initiator IQN, except in the case of DHCP Option 43, where the initiator IQN is set to empty on the adapter iSCSI vNIC.
When an initiator IQN is set at the iSCSI vNIC level, the initiator IQN at the service profile level is removed, if one is present.
If there are two iSCSI vNIC in a service profile and only one of them has the initiator IQN set, the second one is configured with the default IQN pool. You can change this configuration later. The only exception is if DHCP Option 43 is configured. In this case, the initiator IQN on the second iSCSI vNIC is removed during service profile association.
Enabling MPIO on Windows
Note | If you change the networking hardware, Windows may fail to boot from an iSCSI drive. For more information, see Microsoft support Article ID: 976042. |
The server on which you enable MPIO must have a Cisco VIC driver.
If there are multiple paths configured to the boot LUN, only one path should be enabled when the LUN is installed.
Step 1 | In the service profile associated with the server, configure the primary iSCSI vNIC.
For more information, see Creating an iSCSI vNIC for a Service Profile. |
Step 2 | Using the primary iSCSI vNIC, install the Windows operating system on the iSCSI target LUN. |
Step 3 | After Windows installation is completed, enable MPIO on the host. |
Step 4 | In the service profile associated with the server, add the secondary iSCSI vNIC to the boot policy. For more information, see Creating an iSCSI Boot Policy. |
Configuring iSCSI Boot
When you configure an adapter or blade in Cisco UCS to iSCSI boot from a LUN target, you need to complete all of the following steps.
Command or Action | Purpose | |
---|---|---|
Step 1 | Configure the iSCSI boot adapter policy. | (Optional)
For more information, see Creating an iSCSI Adapter Policy |
Step 2 | Configure the authentication profiles to be used by the initiator and target. | (Optional) For more information, see Creating an iSCSI Authentication Profile |
Step 3 | If you plan to configure the iSCSI initiator to use an IP address from a pool of IP addresses, add a block of IP addresses to the iSCSI initiator pool. | (Optional) For more information, see Creating an iSCSI Initiator IP Pool |
Step 4 | Create a boot policy that can be used in any service profile. Alternatively, you can create a local boot policy only for the specific service policy. However, we recommend that you create a boot policy that can be shared with multiple service profiles. | For more information about creating a boot policy that can be used in any service profile, see Creating an iSCSI Boot Policy. |
Step 5 | If you created a boot policy that can be used in any service profile, you need to assign it to the service profile. Otherwise, proceed to the next step. | You can assign the boot policy to the service profile while configuring the iSCSI boot and vNIC parameters in the service profile in step 7. |
Step 6 | Create an iSCSI vNIC in a service profile. | For more information, see Creating an iSCSI vNIC for a Service Profile |
Step 7 | Configure the iSCSI boot parameters, including the iSCSI qualifier name (IQN), initiator, target interfaces, and iSCSI vNIC parameters in a service profile in expert mode or service profile template. | For more information, see Creating a Service Profile with the Expert Wizard or Creating a Service Profile Template, respectively. |
Step 8 | Verify the iSCSI boot operation. | For more information, see Verifying iSCSI Boot |
Step 9 | Install the OS on the server. | |
Step 10 | Boot the server. |
Creating an iSCSI Adapter Policy
Step 1 | In the Navigation pane, click the Servers tab. | ||||||||||||||||||||||
Step 2 | On the Servers tab, expand . | ||||||||||||||||||||||
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. | ||||||||||||||||||||||
Step 4 | Right-click Adapter Policies and choose Create iSCSI Adapter Policy. | ||||||||||||||||||||||
Step 5 | In the Create iSCSI Adapter Policy dialog box, complete the following fields:
| ||||||||||||||||||||||
Step 6 | Click OK. |
What to Do Next
Include the adapter policy in a service profile and/or template.
Deleting an iSCSI Adapter Policy
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. |
Step 4 | Expand the Adapter Policies node. |
Step 5 | Right-click the adapter policy and choose Delete. |
Step 6 | If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes. |
Creating an iSCSI Authentication Profile
For iSCSI boot, you need to create both an initiator and a target iSCSI authentication profile.
Step 1 | In the Navigation pane, click the Servers tab. | ||||||||||
Step 2 | On the Servers tab, expand . | ||||||||||
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. | ||||||||||
Step 4 | Right-click iSCSI Authentication Profiles and choose Create iSCSI Authentication Profile. | ||||||||||
Step 5 |
In the Create Authentication Profile dialog box, complete the following fields:
| ||||||||||
Step 6 | Click OK. |
What to Do Next
Include the authentication profile in a service profile and/or template.
Deleting an iSCSI Authentication Profile
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. |
Step 4 | Expand the iSCSI Authentication Profiles node. |
Step 5 | Right-click the IP pool you want to delete and choose Delete. |
Step 6 | If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes. |
Creating an iSCSI Initiator IP Pool
You can create a group of IP addresses to be used for iSCSI boot. Cisco UCS Manager reserves the block of IP addresses you specify.
The IP pool must not contain any IP addresses that have been assigned as static IP addresses for a server or service profile.
Step 1 | In the Navigation pane, click the LAN tab. | ||||||||||||||
Step 2 | In the LAN tab, expand . | ||||||||||||||
Step 3 | Expand the node for the organization where you want to create the
pool.
If the system does not include multitenancy, expand the root node. | ||||||||||||||
Step 4 | Expand the IP Pools node. | ||||||||||||||
Step 5 | Right-click IP Pool iscsi-initiator-pool and choose Create Block of IP Addresses. | ||||||||||||||
Step 6 | In the
Create a Block of IP Addresses dialog box,
complete the following fields:
| ||||||||||||||
Step 7 | Click OK. |
What to Do Next
Configure one or more service profiles or service profile templates to obtain the iSCSI initiator IP address from the iSCSI initiator IP pool.
Creating an iSCSI Boot Policy
You can add up to two iSCSI vNICs per boot policy. One vNIC acts as the primary iSCSI boot source, and the other acts as the secondary iSCSI boot source.
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the node for the organization where you want to create the
policy.
If the system does not include multitenancy, expand the root node. |
Step 4 | Right-click
Boot
Policies and choose
Create
Boot Policy.
The Create Boot Policy wizard displays. |
Step 5 | Enter a unique
name and description for the policy.
This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved. |
Step 6 | (Optional)To reboot a
server that uses this boot policy after you make changes to the boot order,
check the
Reboot on Boot Order
Change check box.
In the Cisco UCS Manager GUI, if the Reboot on Boot Order Change check box is checked for a boot policy, and if CD-ROM or Floppy is the last device in the boot order, deleting or adding the device does not directly affect the boot order and the server does not reboot. |
Step 7 | (Optional)If desired, check the Enforce vNIC/vHBA/iSCSI Name check box.
|
Step 8 | To add a iSCSI boot to the boot policy, do the following: |
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.
Creating an iSCSI vNIC for a Service Profile
Step 1 | In the Navigation pane, click the Servers tab. | ||||||||||||||||||
Step 2 | On the Servers tab, expand . | ||||||||||||||||||
Step 3 | Expand the node for the organization that contains the service profile for which you want to create an iSCSI vNIC. | ||||||||||||||||||
Step 4 | Expand the service profile for which you want to create a iSCSI vNIC. | ||||||||||||||||||
Step 5 | Right-click the iSCSI vNICs node and choose Create vNICs. | ||||||||||||||||||
Step 6 | In the Create iSCSI vNIC dialog box, complete the following fields:
| ||||||||||||||||||
Step 7 | In the MAC Address Assignment drop-down list in the iSCSI MAC Address area, choose one of the following:
| ||||||||||||||||||
Step 8 | (Optional)If you want to create a MAC pool that will be available to all service profiles, click Create MAC Pool and complete the fields in the Create MAC Pool wizard.
For more information, see Creating a MAC Pool. | ||||||||||||||||||
Step 9 | Click OK. | ||||||||||||||||||
Step 10 | (Optional)If you want to set or change the initiator name, from the iSCSI vNICs tab, click Reset Initiator Name or Change Initiator Name and complete the fields in the Change Initiator Name dialog box or click . For more information, see either Setting the Initiator IQN at the Service Profile Level or Setting the Initiator IQN at the Service Profile Level. |
Deleting an iSCSI vNIC from a Service Profile
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the node for the organization that contains the service profile from which you want to delete an iSCSI vNIC. |
Step 4 | Expand the service profile from which you want to delete an iSCSI vNIC. |
Step 5 | Expand the iSCSI vNICs node. |
Step 6 | Right-click the iSCSI vNIC you want to delete and choose Delete. |
Step 7 | If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes. |
Setting the Initiator IQN at the Service Profile Level
Step 1 | In the Navigation pane, click the Servers tab. |
Step 2 | On the Servers tab, expand . |
Step 3 | Expand the desired node for the organization. |
Step 4 | Click the service profile that has the iSCSI vNIC that you want to change. |
Step 5 | In the Work pane, click the iSCSI vNICs tab. |
Step 6 | Click Reset Initiator Name. |
Step 7 | If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes. |
Changing the Initiator IQN at the Service Profile Level
Command or Action | Purpose | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Step 1 | In the Navigation pane, click the Servers tab. | |||||||||
Step 2 | On the Servers tab, expand . | |||||||||
Step 3 | Expand the desired node for the organization. | |||||||||
Step 4 | Click the service profile that has the iSCSI vNIC that you want to change. | |||||||||
Step 5 | In the Work pane, click the iSCSI vNICs tab. | |||||||||
Step 6 | In the Actions area, click Change Initiator Name. | |||||||||
Step 7 | In the Change Initiator Name dialog box, change the values in the following fields |
| ||||||||
Step 8 | Click OK. |
Setting iSCSI Boot Parameters
You can set iSCSI boot parameters, including the boot order, boot policy, iSCSI authentication profile, initiator interface, and target interface for an iSCSI vNIC.
Step 1 | In the Navigation pane, click the Servers tab. | ||||||||||||||||
Step 2 | On the Servers tab, expand . | ||||||||||||||||
Step 3 | Expand the node for the organization that contains the service profile for which you want to create iSCSI boot parameters. If the system does not include multi-tenancy, expand the root node. | ||||||||||||||||
Step 4 | Click the service profile for which you want to create iSCSI boot parameters. | ||||||||||||||||
Step 5 | Click the Boot Order tab. | ||||||||||||||||
Step 6 | In the Specific Boot Policy area, click the down arrows to expand the iSCSI vNICs area. | ||||||||||||||||
Step 7 | In the iSCSI vNICs area, double-click the iSCSI vNICs from which you want to boot the server to add them to the Boot Order table. | ||||||||||||||||
Step 8 | In the iSCSI vNICs area, click the Set Boot Parameters link. If there are two iSCSI vNICs, choose the one for which you want to set boot parameters. | ||||||||||||||||
Step 9 | In the Set iSCSI Boot Parameters dialog box, complete the following fields:
| ||||||||||||||||
Step 10 | In the
Initiator Name area, complete the following fields:
| ||||||||||||||||
Step 11 | From the
Initiator IP Address Policy drop-down list,
choose of the following:
| ||||||||||||||||
Step 12 | If you chose Static from the
Initiator IP Address Policy drop-down list, complete the following fields:
| ||||||||||||||||
Step 13 | For the
iSCSI target interface, choose one of the following radio buttons:
| ||||||||||||||||
Step 14 | If you chose iSCSI Static Target Interface, in the Static Target Interface table, click Add. | ||||||||||||||||
Step 15 | In the Create iSCSI Static Target dialog box, complete the following fields:
| ||||||||||||||||
Step 16 | If you chose iSCSI Auto Target Interface, enter either the initiator name or the DHCP vendor ID in the DHCP Vendor Id field. The initiator must have already been configured. The vendor ID can be up to 32 alphanumeric characters. | ||||||||||||||||
Step 17 | Click OK. |
Modifying iSCSI Boot Parameters
You can modify iSCSI boot parameters, including the boot order, boot policy, iSCSI authentication profile, initiator interface, and target interface for an iSCSI vNIC.
Step 1 | In the Navigation pane, click the Servers tab. | ||||||||||||||||||
Step 2 | On the Servers tab, expand . | ||||||||||||||||||
Step 3 | Expand the node for the organization that contains the service profile for which you want to modify iSCSI boot parameters. If the system does not include multi-tenancy, expand the root node. | ||||||||||||||||||
Step 4 | Click the service profile for which you want to modify iSCSI boot parameters. | ||||||||||||||||||
Step 5 | Click the Boot Order tab. | ||||||||||||||||||
Step 6 | In the Specific Boot Policy area, click the down arrows to expand the iSCSI vNICs area. | ||||||||||||||||||
Step 7 | To add or delete an iSCSI vNIC from the boot order or to change the boot order, do one of the following:
| ||||||||||||||||||
Step 8 | To change the boot parameters, in the iSCSI vNICs area, click the Set Boot Parameters link. If there are two iSCSI vNICs, choose the one for which you want to change boot parameters. | ||||||||||||||||||
Step 9 | In the Set iSCSI Boot Parameters dialog box, change the values in any of the following fields:
| ||||||||||||||||||
Step 10 | In the
Initiator Name area, complete the following fields:
| ||||||||||||||||||
Step 11 | From the
Initiator IP Address Policy drop-down list,
change the selection to one of the following:
| ||||||||||||||||||
Step 12 | If you chose Static from the
Initiator IP Address Policy drop-down list, complete or change the following fields:
| ||||||||||||||||||
Step 13 | For the
iSCSI target interface, choose one of the following radio buttons:
| ||||||||||||||||||
Step 14 | If you chose iSCSI Static Target Interface, do one of the following in the Static Target Interface table:
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Step 15 | If you chose iSCSI Auto Target Interface, change the entry to either the initiator name or the DHCP vendor ID in the DHCP Vendor Id field. The initiator must have already been configured. The vendor ID can be up to 32 alphanumeric characters. | ||||||||||||||||||
Step 16 | Click OK. |
IQN Pools
An IQN pool is a collection of iSCSI Qualified Names (IQNs) for use as initiator identifiers by iSCSI vNICs in a Cisco UCS domain.
IQN pool members are of the form prefix:suffix:number, where you can specify the prefix, suffix, and a block (range) of numbers.
An IQN pool can contain more than one IQN block, with different number ranges and different suffixes, but sharing the same prefix.
Creating an IQN Pool
Note | In most cases, the maximum IQN size (prefix + suffix + additional characters) is 223 characters. When using the Cisco UCS NIC M51KR-B adapter, you must limit the IQN size to 128 characters. |
Step 1 | In the Navigation pane, click the SAN tab. | ||||||||||
Step 2 | On the SAN tab, expand . | ||||||||||
Step 3 | Expand the node for the organization where you want to create the
pool.
If the system does not include multitenancy, expand the root node. | ||||||||||
Step 4 | Right-click IQN Pools and select Create IQN Suffix Pool. | ||||||||||
Step 5 | In the
Define Name and Description page of the
Create IQN Suffix Pool wizard, fill in the
following fields:
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Step 6 | Click Next. | ||||||||||
Step 7 | In the Add IQN Blocks page of the Create IQN Suffix Pool wizard, click Add. | ||||||||||
Step 8 | In the
Create a Block of IQN Suffixes dialog box, fill in the
following fields:
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Step 9 | Click OK. | ||||||||||
Step 10 | Click Finish to complete the wizard. |
What to Do Next
Include the IQN suffix pool in a service profile and/or template.
Adding a Block to an IQN Pool
Step 1 | In the Navigation pane, click the SAN tab. | ||||||||
Step 2 | On the SAN tab, expand . | ||||||||
Step 3 | Expand the node for the organization containing the pool. If the system does not include multitenancy, expand the root node. | ||||||||
Step 4 | Expand the IQN Pools node. | ||||||||
Step 5 | Right-click the desired IQN pool and select Create a Block of IQN Suffixes. | ||||||||
Step 6 | In the
Create a Block of IQN Suffixes dialog box, fill in the
following fields:
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Step 7 | Click OK. |
Deleting a Block from an IQN Pool
If you delete an address block from a pool, Cisco UCS Manager does not reallocate any addresses in that block that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted block remain with the vNIC or vHBA to which they are assigned until one of the following occurs:
Step 1 | In the Navigation pane, click the SAN tab. |
Step 2 | On the SAN tab, expand . |
Step 3 | Expand the node for the organization containing the pool. If the system does not include multitenancy, expand the root node. |
Step 4 | Expand the IQN Pools node. |
Step 5 | Choose the IQN pool for which you want to delete a block of IQN suffixes. |
Step 6 | In the Work pane, click the IQN Blocks tab. |
Step 7 | Right-click the block to be deleted and select Delete. |
Step 8 | Click Yes to confirm the deletion. |
Step 9 | Click Save Changes. |
Deleting an IQN Pool
If you delete a pool, Cisco UCS Manager does not reallocate any addresses from that pool that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted pool remain with the vNIC or vHBA to which they are assigned until one of the following occurs:
Step 1 | In the Navigation pane, click the SAN tab. |
Step 2 | On the SAN tab, expand . |
Step 3 | Expand the node for the organization containing the pool. If the system does not include multitenancy, expand the root node. |
Step 4 | Expand the IQN Pools node. |
Step 5 | Right-click the pool you want to delete and select Delete. |
Step 6 | If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes. |
LAN Boot
You can configure a boot policy to boot one or more servers from a centralized provisioning server on the LAN. A LAN (or PXE) boot is frequently used to install operating systems on a server from that LAN server.
You can add more than one type of boot device to a LAN boot policy. For example, you could add a local disk or virtual media boot as a secondary boot device.
Configuring a LAN Boot for a Boot Policy
You can also create a local boot policy that is restricted to a service profile or service profile template. However, we recommend that you create a global boot policy that can be included in multiple service profiles or service profile templates.
You can add more than one type of boot device to a boot policy. For example, you could add a local disk or virtual media boot as a secondary boot device.
This procedure continues directly from Creating a Boot Policy.
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.
Local Disk Boot
If a server has a local drive or bootable USB device, you can configure a boot policy to boot the server from that device with a local disk boot policy.
Note | Cisco UCS Manager does not differentiate between the types of local boot devices. If an operating system has been installed on more than one local drive or on an internal USB drive (eUSB), you cannot specify which of these devices the server should use as the boot drive. |
Configuring a Local Disk Boot for a Boot Policy
You can also create a local boot policy that is restricted to a service profile or service profile template. However, we recommend that you create a global boot policy that can be included in multiple service profiles or service profile templates.
You can add more than one type of boot device to a boot policy. For example, you could add a virtual media boot as a secondary boot device.
This procedure continues directly from Creating a Boot Policy.
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.
Virtual Media Boot
You can configure a boot policy to boot one or more servers from a virtual media device that is accessible from the server. A virtual media device mimics the insertion of a physical CD-ROM disk (read-only) or floppy disk (read-write) into a server. This type of server boot is typically used to manually install operating systems on a server.
Configuring a Virtual Media Boot for a Boot Policy
You can also create a local boot policy that is restricted to a service profile or service profile template. However, we recommend that you create a global boot policy that can be included in multiple service profiles or service profile templates.
You can add more than one type of boot device to a boot policy. For example, you could add a local disk boot as a secondary boot device.
Note | Virtual Media requires the USB to be enabled. If you modify the BIOS settings that affect the USB functionality, you also affect the Virtual Media. Therefore, we recommend that you leave the following USB BIOS defaults for best performance: |
This procedure continues directly from Creating a Boot Policy.
What to Do Next
Include the boot policy in a service profile and/or template.
After a server is associated with a service profile that includes this boot policy, you can verify the actual boot order in the Boot Order Details area on the General tab for the server.