NBMR. Bare Machine Recovery for EMC NetWorker. User Guide. For Linux. June Version Cristie Data Products GmbH Nordring 53-55

Transcription

1 NBMR Bare Machine Recovery for EMC NetWorker User Guide For Linux June 2014 Version Cristie Softw are Ltd. New Mill Chestnut Lane Stroud GL5 3EH United Kingdom Tel:+44(0) Fax:+44(0) Cristie Data Products GmbH Nordring Cristie Nordic AB Gamla Värmdövägen Niedernberg Germany Tel: +49 (0) 60 28/ Fax: +49 (0) 60 28/ cbmr@cristie.de SE Nacka Sw eden Tel:+46(0) Fax:+46(0) cbmr@cristie.se

2 All rights reserved. The software contains proprietary information of Cristie Software Ltd.; it is provided under a license agreement containing restrictions on use and disclosure and is also protected by copyright law. Reverse engineering of the software is prohibited. Due to continued product development this information may change without notice. The information and intellectual property contained herein is confidential between Cristie Software Ltd. and the client and remains the exclusive property of Cristie Software Ltd. If you find any problems in the documentation, please report them to us in writing. Cristie Software Ltd. does not warrant that this document is error-free. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior written permission of Cristie Software Ltd. IBM Tivoli Storage Manager (TSM), AIX and TIVOLI are trademarks of the IBM Corporation. NetWorker and Avamar are trademarks of the EMC Corporation. vsphere, vcenter and vcloud are trademarks of VMware Inc. Cristie Management Console (CMC), PC-BaX, UBax, Cristie Storage Manager (CSM), SDB, ABMR (Bare Machine Recovery for EMC Avamar), NBMR (Bare Machine Recovery for EMC NetWorker), TBMR (Bare Machine Recovery for TSM), CBMR (Cristie Bare Machine Recovery), Recovery Simulator (RS), CloneManager and CRISP (Cristie Recovery ISO Producer) are all trademarks of Cristie Software Ltd. Cristie Software Ltd New Mill Chestnut Lane Stroud GL5 3EH UK Tel: +44 (0) cbmr@cristie.com Website:

3 Contents 3 Contents 1 Introduction Limitations Further... Information 4 2 System Requirements 5 3 Using NBMR For Disaster Recovery Saving... the System Configuration NBMRcfg NetWorker Client Backup Housekeeping Performing a Recovery 8 6 Post Recovery Options Copy... Log Files View... Log Files Post... Recovery Network Changes 25 7 Cristie Technical Support 27

4 4 1 Bare Machine Recovery for EMC NetWorker Introduction Bare Machine Recovery for EMC NetWorker for NetWorker (NBMR) provides disaster recovery capability for EMC NetWorker for Linux. It is possible to recover the original system to the same or dissimilar hardware. To protect a system, backups can be taken periodically, along with configuration information, which includes details of hard disks, network interfaces, etc. This Guide shows the user how to save system configuration information, backup and recover a Linux machine using NBMR. More detailed information is available from man pages for the NBMR components. The man pages are available after installation of NBMR. This guide is for NBMR for Linux version only. Note: NBMR can only be used in conjunction with EMC NetWorker. This guide describes how to: Save Configuration data using nbmrcfg Configure and run your EMC NetWorker Client backup Perform a Disaster Recovery 1.1 Limitations NBMR for Linux does NOT support: Platforms other than Intel or PPC Multi-boot operating systems Recovery of files that are being written to at the time of backup. 1.2 Further Information Further information and advice on using NBMR may be found in the Cristie Knowledge Base at: NBMR User Guide

5 System Requirements 2 5 System Requirements NBMR for Linux can be installed on a x86, x86_64 or PPC Linux machine. NBMR requires that EMC Networker client version 7.4.x or later is already installed. A minimum memory of 1.5GB RAM is required for booting the recovery environment and running a recovery. NBMR Version supports the following Linux platforms: RedHat Enterprise 4.x to 6.5. SUSE 10.x to SUSE 11 SP3. This release supports EMC Networker client versions 7.4.5, 7.5.4, 7.6.5, and Other versions of the 7.4.x, 7.5.x, 7.6.x, 8.0.x and 8.1.x client may work, but they have not been specifically tested by Cristie. At the time of release the EMC Networker servers supported are 7.4.x, 7.5.x, 7.6.x, 8.0.x and 8.1.x. NBMR installation is currently available in English only. Before NBMR can be used it must also be correctly licensed. Cristie provides a 30 day trial license with the product. Note: This release of NBMR does not support the recovery of encrypted or password protected backups.

6 6 3 Bare Machine Recovery for EMC NetWorker Using NBMR For Disaster Recovery This section describes the steps involved in using EMC NetWorker in conjunction with NBMR for disaster recovery. This description assumes that the EMC NetWorker client software has already been installed and configured. To ensure your system is protected observe the following steps: 1. Install NBMR on the system you wish to protect. 2. Use the nbmrcfg program to capture and store the configuration of the system. 3. Backup the system with the EMC NetWorker client to a EMC NetWorker server. 3.1 Saving the System Configuration Configuration is now always saved to /NBMRCFG. It can't be saved anywhere else. This guarantees it is always stored in the backup. When saving the configuration information to the backup location, this must be done before the backup is run. To save the configuration information for each machine, the supplied command line program nbmrcfg is used. It is recommended that this is run prior to running each backup to ensure the configuration is up to date. 3.2 NBMRcfg To use the command line configuration saving program, type nbmrcfg followed by the required options. The available options to nbmrcfg can be shown using: nbmrcfg --help Some examples are shown here: To save configuration information from a machine that boots using grub installed on /dev/sda to the backup location, use: nbmrcfg -b grub -d /dev/sda To save configuration information from a machine that boots using grub installed on /dev/hda, use: nbmrcfg -b grub -d /dev/hda There is a full manual page for nbmrcfg available by typing man nbmrcfg. NBMR User Guide

7 NetWorker Client Backup 4 7 NetWorker Client Backup The backup is performed using the command line savefs, for example: savefs -v -s <hostname> <filesystem> where <hostname> is the host name or IP address of the EMC NetWorker server that the backup will be stored upon and <filesystem> is the name of the file system you wish to backup. The backup command should be repeated for each file system that will need to be recovered in the event of a disaster recovery. As a minimum Cristie recommends backing up the root ('/') and boot ('/ boot') file systems. For example, the following screenshot shows the backup of root being initiated. Please refer to your NetWorker User documentation for a full discussion of the backup options. 4.1 Housekeeping In order to ensure that you can recover to the latest version of the operating system that was installed on your Linux machine, you must ensure that a EMC NetWorker backup is performed every time the operating system files change. This is not always possible, so Cristie recommend that the EMC NetWorker backup be performed regularly. However, you should choose a period which reflects the rate of change in your own organisation. Although the configuration data will change less frequently than the operating system, it is a wise precaution to update this regularly. This can be achieved by creating a cron job for your schedule or by defining a scheduled backup for the required client machine on the EMC NetWorker server.

8 8 5 Bare Machine Recovery for EMC NetWorker Performing a Recovery When a machine has crashed, it can be recovered using the NBMR bootable CD-ROM. This is the same CD from which you installed the software. You should ensure your machine s BIOS is set up to boot from CD-ROM. The process encompasses the following stages: Boot into Recovery environment and configure as required Read Configuration Data from your backup Restore Files from your backup Load additional drivers (if necessary) Reboot into recovered OS Boot the machine using the NBMR bootable CD ROM or ISO. You will be presented with the screen below: Cristie recommend that you choose the graphical X-Windows recovery environment mode which loads the Cristie Recovery Console (CRC). NBMR User Guide

9 Performing a Recovery 9 You will be presented with the Licence screen. Click I Accept if you agree with the NBMR licencing terms.

10 10 Bare Machine Recovery for EMC NetWorker You will then see the Recovery Console main menu: Cristie recommends using the Auto Recovery Wizard option from the Recovery Console main menu. NBMR User Guide

11 Performing a Recovery 11 This will then display the Setup NBMR Location dialogue box, where you can specify the EMC NetWorker Server information. NBMR requires that the recovering machine has the same hostname and IP address as the client machine used to create the backup. In order to configure the recovery environment to match the original client that was backed up, click the Network Setup button. Enter the details of the network settings, so that they match the original client that was backed up. Select OK to save your changes.

12 12 Bare Machine Recovery for EMC NetWorker The Start Network screen will then display the network changes being implemented. Click Close to return to the Setup NBMR Location Wizard. Enter the Hostname and IP address of the EMC NetWorker server that your backup is stored on. (Contact your EMC NetWorker administrator if you are unsure of any of the settings) Next provide the location of the EMC NetWorker binary files to be uses during the recovery. Note: The client binaries used MUST be the same version/platform (i.e. 32 or 64 bit) as the client used to create the backup being restored. The files can be retrieved either from another machine that is running the required EMC NetWorker Client or from a RPM file located on your network. NBMR User Guide

13 Performing a Recovery 13 Retrieving the binaries from a RPM file. To access the binaries from an RPM on your network, select the Install from RPM file radio button.

14 14 Bare Machine Recovery for EMC NetWorker Then either enter the path to the location of the RPM or click the Browse button in order to select the location of the required RPM file. After clicking the Browse button, you will have the option to mount a network drive. NBMR User Guide

15 Performing a Recovery 15 Click the Mount Network Share/Device button, enter the details of the Network Share / Device where the required RPM can be accessed and click the OK button. After receiving confirmation that the share/device has been mounted, click the Close button. Then click upon the required RPM file.

16 16 Bare Machine Recovery for EMC NetWorker Upon returning to the Setup NBMR Location window, click the Next > button to proceed with the recovery. NBMR User Guide

17 Performing a Recovery 17 Retrieving the binaries from another machine. To access the binaries from another machine running the required EMC NetWorker Client, select the Copy files from another machine radio button.

18 18 Bare Machine Recovery for EMC NetWorker Provide the location of a running machine where the EMC NetWorker binary files can be copied from. These files will be copied to the recovery environment and be used to recover the backup. Select Next > to proceed. Next the Restore Configuration dialogue will be shown. Typically, nothing needs to be entered under the NetWorker recover options. However the option is provided if required. Note: for a list of these parameters and how to use them you should consult the relevant EMC NetWorker User Guide. Click Next> to continue. NBMR User Guide

19 Performing a Recovery 19 This will then restore the configuration from the backup. The EMC NetWorker client binary files are also copied from the selected location at this stage.

20 20 Bare Machine Recovery for EMC NetWorker Click Next> to continue to the Start Recovery phase. If you are not recovering to dissimilar hardware, you must un-check the box for Dissimilar Hardware Support. Not doing so can cause problems when restoring to similar hardware. SELinux Relabel is required to ensure successful recovery of your system. Do not untick this box unless instructed to do so by Cristie support NBMR User Guide

21 Performing a Recovery If you wish, you may customise your disk layout by clicking on the Recovery Options button. When you are satisfied that all options are correct, click OK to confirm and return to the Start Recovery dialogue. 21

22 22 Bare Machine Recovery for EMC NetWorker Finally select Next> to start the recovery, which will begin with a dialog like this: NBMR User Guide

23 Performing a Recovery 23 The completion of the recovery is signified with a pop-up box like this: Cristie recommends that the log files are always saved. If the machine fails to boot after the restore Cristie Support will require copies of the log files to diagnose any problems. Details on how to save log files are described in the section Copy Log Files. Note: if you are recovering to dissimilar hardware: NBMR will find the required module (s) automatically. Normally this will happen with no further user intervention. Click OK to close the pop-up box, followed by the Close button to return to the Main Menu. Finally select Reboot from the Main Menu to boot the restored machine, if post recovery options are not required.

24 24 6 Bare Machine Recovery for EMC NetWorker Post Recovery Options After performing a recovery, it is possible to undertake the following actions: Copy Log Files (Cristie recommends that this action is always undertaken after a recovery) View Log Files Re-configure the recovered machines network settings 6.1 Copy Log Files Select the icon from the Cristie Recovery Console main menu. Click Browse to select a location to copy the log files to. Here you will have to option to mount a network drive. Ensure this is a location which can be easily accessed in case there is a need to the log files to Cristie for support purposes. Note: log files are essential if you require support from Cristie. They detail exactly what has happened during the recovery on your system. Without them, it is very difficult for Cristie to offer meaningful support. NBMR User Guide

25 Post Recovery Options View Log Files To view log files, select the logfiles: icon from the Main Menu. This will display the list of Click on the log you wish to view. Check the summary information at the bottom of the recovery status report for any errors. Click Close to finish. 6.3 Post Recovery Network Changes If you wish to change the Network Settings in advance of rebooting, select Tools from the Main Menu, then Post Recovery Changes:

26 26 Bare Machine Recovery for EMC NetWorker Select the required Network Configuration tool. Use the selected Network Configuration tool, to enter the required settings or hostname for the recovered system and save your changes. Note: Select the Network editor that was used on the original system to configure the Network interfaces.. Click Close to return to the Cristie Recovery Console main menu. You should now restart the recovered machine by clicking Console menu. on the Cristie Recovery NBMR User Guide

27 Cristie Technical Support 7 27 Cristie Technical Support If you have any queries or problems concerning your Bare Machine Recovery for EMC NetWorker product, please contact Cristie Technical Support. To assist us in helping with your enquiry, make sure you have the following information available for the person dealing with your call: NBMR Version Number Installed OS type and version Any error message information (if appropriate) Description of when the error occurs All Cristie log files relating to the source or recovery machine. This is very important to help us provide a quick diagnosis of your problem Contact Numbers - Cristie Software (UK) Limited Technical Support +44 (0) Toll-Free US Number TEC-CBMR ( ) Sales Enquiries +44 (0) cbmr@cristie.com Web Support Hours 05:00 to 17:00 Eastern Standard Time (EST) Monday to Friday Out-of-Hours support available to customers with a valid Support Agreement - Severity 1 issues* only UK Bank Holidays** classed as Out-of-Hours - Severity 1 issues only. *Severity 1 issues are defined as: a production server failure, cannot perform recovery or actual loss of data occurring. **For details on dates of UK Bank Holidays, please see Cristie Software Limited are continually expanding their product range in line with the latest technologies. Please contact the Cristie Sales Office for the latest product range. Should you have specific requirements for data storage and backup devices, then Cristie's product specialists can provide expert advice for a solution to suit your needs.