Cisco UCS Manager Configuration Common Practices and Quick- Start Guide Introduction to Cisco Unified Computing System. The introduction of the Cisco Unified Computing System. As of August 2. 01. Centos Installation Minimal Vs Basic Server Diagram SocketCisco UCS is the #2 x. While the model is no longer new, a growing number of customers are deploying Cisco UCS for the first time. This guide provides an overview of Cisco UCS essentials and best practices. Centos Installation Minimal Vs Basic Server Diagram DrawingThis document is a gentle introduction to Redis Cluster, that does not use complex to understand distributed systems concepts. Maximum Service - minimal effort! IT-Service Management and customer service in an incredibly attractive package! Light and fast implementation. How To Use This Manual. This is the manual for apcupsd, a daemon for communicating with UPSes (Uninterruptible Power Supplies) made by American Power Conversion. This guide also covers the most direct path to working in a stateless- server SAN boot environment, upon which much of the Cisco UCS core value is based, with respect to service availability. In support of a utility or cloud computing model, this guide also presents a number of concepts and elements within the Cisco UCS Management Model that should help data center operators increase responsiveness and efficiency by improving data center automation. To provide greater administrative and operational control, using fewer individual points of management, thereby allowing increased scalability while reducing complexity. To greatly reduce the time needed to commision new compute resources, and the time needed to deploy new servers (either bare- metal OS or hypervisor- based). To improve service availability through the deepest possible abstraction of hardware state and I/O connectivity. To simplify server virtualization through converged physical infrastructure. To enable all the physical infrastructure and connectivity to be fully programmable, thereby reducing manual intervention, and enabling automation. In Cisco UCS, the notion of .
There is less focus on the . The Service Profile contains all the server hardware identifiers, firmware, state, configuration, connectivity and behaviour, but is totally abstracted from the physical server. Cisco UCS provides a . An instance of the UCS Manager (UCSM) is what defines a Cisco UCS domain. A domain can dynamically grow to 2. All management and configuration is done at the domain level, not the chassis level. While virtualization of MAC addresses and World Wide Port Name (WWPN) identifiers has been evolving through the industry for years, UCS goes ever further by extending the logical service profile definition to include the hardware, BIOS, CPU, and I/O adapter configuration, versions and settings. A first time wizard will guide the user through the standard questions (hostname, IP address, netmask, default gateway, etc). The configuration of the . This value must be set explicitly. To set this value from the Equipment tab, select Equipment and then choose Policies > Global Policies and set the policy as shown in Figure 1. Chassis Discovery Policy. The . If the link grouping preference is set to port channel, all of the links from the IOM to the fabric interconnect are grouped in a fabric port channel. The best practice is to set Link Grouping Preference to . They are oriented with southbound connections going to the chassis IOMs and with northbound connections going to the core LAN or SAN. Ports going south to the chassis IOMs are configured as . Ports can be configured and enabled by right- clicking the desired ports when the FI is in scope, as shown in Figure 2. Configuring and Enabling Fabric Interconnect Ports. One of the main solution benefits is the reduction in server provisioning time. Whenever additional chassis are racked, stacked, and cabled and their server ports are configured, the Cisco UCS Manager will automatically perform an inventory and deep discovery of any subsequently attached equipment, without requiring manual intervention. Regardless of how many new chassis are connected, the discovery process would take about 1. Equipment tab. This access is made possible by associating a pool of IP addresses for the cut- through interfaces that correspond with each blade's Cisco. Typically, these addresses are configured on the same administrative subnet as the UCS Manager IP address. This pool is created from the LAN tab under Pools, by selecting . The binding of these addresses to the blades happens automatically, with no manual intervention required. This model represents a major shift from traditional server models: the version of the BIOS and adapter firmware become properties that are prescribed and associated as part of the logical server (Service Profile) definition. This model stands in contrast with that of other so- called . Furthermore, the Host Firmware Package is not architecturally related to the UCSM firmware version and does not need to be synchronized with that version. From the Equipment tab, select Equipment and choose Firmware Management > Installed Firmware, as shown in Figure 3. In general, the IOMs, FIs, and UCS Manager should all have the same version; the version on the adapter cards, BIOS, and CIMC will generally be dictated by the Host Firmware Package from the associated Service Profile. Firmware Reporting for all Major Hardware Components. At this point, all the hardware should be available and ready to use as physical equipment. The real power of Cisco UCS, though, is in the way it creates and configures application- level servers (Service Profiles) and has them . Stateless servers are logical servers (OS and application images) that can run on any physical server or blade in a way that encapsulates traditional hardware identifiers (World Wide Node Names . Cisco UCS Logical Building Blocks. The foundations of Service Profiles are these logical building blocks (for example, pools and policies) that can then be captured for reuse. Furthermore, virtual network interface card (v. NIC) and virtual host bus adapter (v. HBA) templates can be referenced for use in higher- level Service- Profile templates. To reduce server provisioning time, Service Profile templates can then be used to rapidly instantiate actual Service Profiles (possibly automatically associating those instantiated service profiles with actual physical servers and blades). Higher- level objects (such as v. NICs) can be created by referencing lower- level objects (such as pools and policies). This normalized data model promotes reuse and removes the need for duplication of common objects. As the basis for the UCS management model, they allow Service Profiles to be associated with any blade, while still providing the exact same ID and presentation to the upstream LAN or SAN. There are three sets of pools used part of best practices. The presentation of duplicate WWNs and MAC addresses to the LAN or SAN could naturally be a major source of complications. Best practices are to embed either a simple domain ID, or a site/domain pair, along with a fabric side indicator to guarantee uniqueness and identify fabric source. For example, a MAC pool block would take the form. B5: 2. 3: BX: YY, where. B5 designates Cisco UCS. B indicates the B- side fabric. Smaller environments could shorten the encoding to just domain and fabric side, as in. B5: 1. A: XX: YY. Make sure that. . For many environments, populating and using the respective default pools may be simplest and sufficient, or by creating domain- wide pools, such as . This approach reduces the number of objects that need to be configured and managed. Alternatively, operators are free to configure different pools on a per- tenant or per- application basis. This approach can provide more specific identity management and more granular traffic monitoring of tenants, applications, etc. Defining and using a comprehensive set of policies enables greater consistency, control, predictability and automation. The most common policies that should be used regularly are presented here. Typically, having 1. SAN- boot would require configuring 1. Cisco UCS inverts this unwieldy model, and instead requires configuring only in proportion to the number of storage arrays serving SAN- boot images, regardless of the number of servers doing SAN- boot. A single boot policy, with the WWPNs of a single storage array can be referenced and reused by any number of servers, without additional manual configuration. Therefore, the use of SAN boot within a Boot policy is a most highly recommended best practice to improve service availability. This allows for a network boot and installation, only if the OS had not previously been installed. A best practice is to create one policy, based on the latest packages that correspond with the Cisco UCS Manager infrastructure and server software release, and to reference that Host Firmware Package for all Service Profiles and templates created. This best practice will help ensure version consistency of a server's lowest- level firmware, regardless of physical server failures that may cause re- association of Service Profiles on other blades. Values for the Maintenance Policy can be . The best practice is to not use the . A best practice is to specify no local storage for SAN boot environments, thereby precluding any problems at Service Profile association time, when local disks may present themselves the host OS during installation. For additional assurance, you can remove or unseat local disks from blades completely, especially blades used for OS installation. The default policy is no scrubbing. A best practice is to set the policy to scrub the local disk, especially for service providers, multi- tenant customers, and environments in which network installation to a local disk is used. For VMware and virtual environments that depend on CPU support for Intel Virtualization Technology, a corresponding policy can be created, removing any requirement for manual intervention during server provisioning. Similarly, applications that are sensitive to Intel Turbo Boost or Hyper- Threading can could have dedicated BIOS policies referenced, as shown in Figure 2. Also, setting . BIOS Policies Isolation. Cisco UCS addresses isolation requirements with the following objects. VLANs are created on the northbound LAN switch and then declared as available, since UCS does not create VLANs. Any declared VLANs can then be referenced when v. NICs or v. NIC templates are created.
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