Citrix Systems 6.1.0 manual Before You Upgrade

Page 30

Before You Upgrade

Before you begin your upgrade, be sure to make the following preparations:

•Download the latest version of XenCenter. Earlier versions of XenCenter do not include the wizard.

•Citrix strongly recommends that you take a backup of the state of your existing pool using the pool-dump- database xe CLI command (see the XenServer Administrator's Guide). Taking a backup state ensures that you can revert a partially complete rolling upgrade to its original state without losing VM data.

•Ensure that your hosts are not over-provisioned: check that hosts have sufficient memory to carry out the upgrade. As a general guideline, if N equals the total number of hosts in a pool, then there needs to be sufficient memory across N-1 hosts to run all of the live VMs in the pool, as the Rolling Pool Upgrade wizard migrates VMs from and shuts down one host in a pool at a time. It is best to suspend any non-critical VMs during the upgrade process.

While the Rolling Pool Upgrade wizard checks that the following actions have been taken, you may choose to perform them before you begin:

•Empty the CD/DVD drives of the VMs in the pool(s).

•Disable HA.

•Disable WLB.

To upgrade XenServer hosts using the XenCenter Rolling Pool Upgrade wizard:

1.Open the Rolling Pool Upgrade wizard: on the Tools menu, select Rolling Pool Upgrade.

2.Read the Before You Start information, and then click Next to continue.

3.Select the pool(s) and/or individual hosts that you wish to upgrade, and then click Next.

4.Choose Automatic Mode or Manual Mode, depending on whether you are planning an automated upgrade from network installation files located on an HTTP, NFS or FTP server, or a manual upgrade from either a CD/ DVD or via PXE boot (using already existing infrastructure).

Note:

If you choose Manual Mode, you must run the XenServer installer on each XenServer host in turn and follow the on-screen instructions on the serial console of the host. Once the upgrade begins, XenCenter prompts you to insert the XenServer installation media or specify a PXE boot server for each host that you upgrade.

Once you have selected your Upgrade Mode, click Run Prechecks.

5.Follow the recommendations to resolve any upgrade prechecks that have failed. If you would like XenCenter to automatically resolve all failed prechecks, click Resolve All.

Once all prechecks have been resolved, click Next to continue.

6.Prepare the XenServer installation media.

If you chose Automatic Mode, enter the installation media details. Choose HTTP, NFS or FTP and then specify the path, username and password, as appropriate.

Note:

Enter the username and password associated with your HTTP, NFS or FTP server, if you have configured security credentials. Do not enter the username and password associated with your XenServer pool.

If you chose Manual Mode, note the upgrade plan and instructions.

Click Start Upgrade.

25

Page 29 Page 31
Image 30
Page 29 Page 31
Contents Citrix XenServer 6.1.0 Installation Guide Trademarks Contents Using Scvmm and Scom with XenServer Boot From SAN Environments Welcome Benefits of Using XenServerAdministering XenServer About This DocumentNew Features in XenServer XenServer EditionsXenServer Documentation Guest EnhancementsReferences System Requirements System RequirementsXenServer Host System Requirements XenCenter System Requirements Supported Guest Operating SystemsInstalling XenServer and XenCenter Installation Media and MethodsInstalling the XenServer Host To install or upgrade the XenServer hostPage Installing XenCenter To install XenCenterHost Partition Format Connecting XenCenter to the XenServer Host To connect XenCenter to the XenServer hostXenServer Hosts with Local Storage Installation and Deployment ScenariosHigh-level procedure Basic hardware requirementsPools of XenServer Hosts with Shared Storage XenServer Hosts with Shared NFS StorageConfiguring your iSCSI storage XenServer Hosts with Shared iSCSI StorageConfiguring an iSCSI IQN for each XenServer host Xe pool-param-set uuid=pooluuid default-SR=iscsisharedsruuid Enabling on Host Installation XenServer and IntelliCacheIntelliCache Deployment To enable local caching, enter the following commands Converting an Existing Host to Use Thin ProvisioningVM Boot Behavior Implementation Details and TroubleshootingXe sr-list params=local-cache-sr,uuid,name-label Using Scvmm and Scom with XenServer How to install the Integration Suite Supplemental PackIntegration Requirements for Scvmm Integration Requirements for Scom Rolling Pool Upgrades Upgrading XenServerPage Before You Upgrade Upgrading XenServer Hosts Using the xe CLI Before you begin your rolling pool upgradeTo upgrade a pool of XenServer hosts using the xe CLI Upgrading a Single XenServer Host Using the xe CLI Before You Upgrade a Single XenServer HostUpgrading a Single XenServer Host Using the xe CLI To empty the CD/DVD drive of a VM using the xe CLITo upgrade a single XenServer host using the xe CLI Page Upgrading LVM-based SRs using the xe CLI Upgrading LVM Storage from XenServer 5.0 or EarlierApplying Updates and Hotfixes to XenServer Before You Apply an Update or HotfixBefore you begin updating To update individual hosts using XenCenter To update individual hosts using the xe CLIUpdating Individual XenServer Hosts To update a pool of hosts using XenCenter Updating a Pool of XenServer HostsTo update a pool of XenServer hosts using the xe CLI Licensing XenServer Activating a Free XenServer ProductTo activate a free XenServer product Licensing XenServer Editions To license XenServer Advanced editions and higherTo configure licensing for XenServer hosts using XenCenter To configure licensing for XenServer hosts using the xe CLIAdditional Licensing Information Grace Period Appendix A. Troubleshooting To capture and save the log fileAppendix B. Boot From SAN Environments Appendix C. PXE Boot Installations Configuring your PXE Environment for XenServer InstallationTo configure your Tftp server Creating an answer file for unattended PXE installation Preparing the destination systemElement Description Required? Element Description Required? Element Proto dhcp or static
Top Page Image Contents