2.4 SLES for SAP Applications — Installation with Wizard

This is a guided installation of the operating system with optimized settings for SAP applications.

During this installation scenario, the following installation and configuration steps will take place and interactive settings are required or possible.

2.4.1 Data Required for Installing the System (with Wizard)

The following data is required for the SUSE Linux Enterprise Server part of the installation (required per physical server):

Hostname

Domain

IP address

Subnet mask

Domain searchlist (DNS)

IP for nameserver

IP for gateway

Master password for the system installation (root password)

The following data is required for the SAP part of the installation (required per SAP system):

SAP System ID of the system to be built up

Virtual hostname (*)

Virtual IP address for SAP service (*)

Virtual netmask (*)

Instance number of the SAP system

Solution Manager key for the SAP system (*)

System T-Shirt Sizing (S, M, L, or customer-specific size) (*)

Database Log Mode (*)

(*) not required for TREX.

2.4.2 Selecting SLES for SAP Applications — Installation with Wizard from the DVD Boot Menu

From the DVD boot menu (see Figure 2-1), select SLES for SAP Applications — Installation with Wizard. The installation process loads and configures a Linux system with all requirements for a SAP installation. To view the boot messages and copyright notices during this process, press Esc. On completion of this process, the YaST installation program starts and displays the graphical installer, which will run mostly automatically.

2.4.3 Preparing System for Automated Installation

After analyzing your computer, the next YaST pop-up dialog will let you specify the volume configuration. Here you configure the volume for the system and swap space. The data volume comes later, after you select the SAP Application.

Figure 2-2 System Volume Configuration

If there is just one hard disk, keep it as the system volume device and set the size of the system volume (and the swap space) in GB in the lower field and confirm it; see Figure 2-2.

HINT: Size of the System Volume

Normally, at least 10 GB is required for the system volume. The swap space depends on the available main memory (RAM). For more information, see the SAP Note 1597355: https://service.sap.com/sap/support/notes/1597355.

If there is more than one hard disk, select the right one as the system volume device and set the size of the system volume (and the swap space) in GB in the lower fields and confirm it. For more information about partitioning, see Section 3.0, Background Information on Partitioning.

WARNING: Deleting Data

If you confirm the storage volume configuration, all existing data on the hard disk will be deleted. If you do not want this to happen, turn off the system.

After confirmation, YaST performs the software installation. Packages are installed one by one, so you can see the progress.

2.4.4 Password for the System Administrator root

When all packages are installed, the basic installation is finished, and the system is rebooted for initial configuration, you will be prompted to enter a Password for the System Administrator root; see Figure 2-3.

Figure 2-3 Password for root User

root is the name of the superuser, or the administrator of the system. Unlike regular users (who may or may not have permission to access certain areas or execute certain commands on the system), root has unlimited access to change the system configuration, install programs, and set up new hardware. The root account should only be used for system administration, maintenance, and repair. Logging in as root for daily work is rather risky: a single mistake could lead to irretrievable loss of system files.

For verification purposes, the password for root must be entered twice. Do not forget the root password. Once entered, this password cannot be retrieved.

The root password can be changed any time later in the installed system. To do so, run YaST and start Security and Users > User and Group Management.

WARNING: The root User

The root user has all the permissions needed to make changes to the system. To carry out such tasks, the root password is required. You cannot carry out any administrative tasks without this password.

2.4.5 Hostname, Domain Name, and IP Address

The next dialog starts with the network configuration; see Figure 2-4.

Figure 2-4 Hostname, Domain Name, and IP Address

The Hostname is the computer’s name in the network. The Domain Name is the name of the network. A hostname and domain are proposed by default. If your system is part of a network, the hostname has to be unique in this network, whereas the domain name has to be common to all hosts on the network.

Also enter the IP Address and Netmask for this host. The IP address must be unique and the netmask has to be common to all hosts on the network.

2.4.6 Domain Name Service (DNS) and Time Server (NTP)

The next dialog continues with the network configuration; see Figure 2-5.

Figure 2-5 Domain Name Service (DNS) and Time Server (NTP)

For Domain Name Service (DNS) configuration, enter the Domain Searchlist and the IP Address of DNS Server plus the IP address of the Default Gateway of your network.

Also enter the address of the NTP Server to synchronize automatically via Network Time Protocol (NTP).

2.4.7 Registration

To get technical support and product updates, you need to register and activate your product with the Novell Customer Center; see Figure 2-6. This dialog provides assistance for doing so. Find detailed information about Novell Customer Center at http://www.novell.com/documentation/ncc/.

Figure 2-6 Registration

Enter your E-Mail Address and Registration Code for the product. If you provide the registration code now, operating system updates will be installed automatically during the installation of the system.

2.4.8 System Configuration Settings

After confirming the registration data, the system will be configured with the supplied settings.

No user action is required at this stage.

WARNING: Firewall Disabled

This wizard-based installation scenario disables the firewall (SuSEfirewall2) completely.

If needed, you can activate the firewall after the installation. If you activate the firewall after the installation, you must open all required ports manually. For more information about required ports, see Section 5.2.2, Ports Configuration.

2.4.9 SAP Product Installation

After applying the configuration settings, you are prompted to continue with the SAP Product Installation using the SAP Installation Wizard. The SAP Installation Wizard will install the SAP application from the SAP media kits you received from SAP.

HINT: SAP Product Installation Default Settings

The SAP Product Installation default settings are specified and documented in /etc/sysconfig/sap-installation-wizard. You can change them according to your needs.

SAP Product Installation

  1. Confirm the pop-up (see Figure 2-7) if you want to continue with the installation right away. Otherwise, it is possible to interrupt the installation process at this point and resume it after a system restart.

    Figure 2-7 SAP Product Installation

    HINT: Resuming SAP Installation after System Restart

    To resume the SAP installation with the wizard, start YaST and select the SAP Product Installer (Computer, then in the YaST Control Center click Miscellaneous > SAP Product Installer; see Figure 2-8). The functionality is the same, but the layout of the dialogs is different; the left progress pane is only displayed when continuing with the installation without a restart.

    The following screen shots document the installation with the SAP Product Installer that runs after a restart of the system.

    Figure 2-8 YaST Control Center: SAP Product Installer

  2. In the next dialog provide the Location of the SAP Installation Master; see Figure 2-9. The location could be a local source (either directory (dir://), locally connected hard disk (device://), USB mass storage (usb://), or CD-ROM (cdrom://)), or a remotely provided installation source (either NFS (nfs://) or SMB (smb://))—select the corresponding option from the pull-down list on the left.

    HINT: Remote Location Specification

    If you want to install from an NFS source, you must enter the name of the server and the complete path to the media data.

    For more information about setting up a remote installation server, see the SUSE Linux Enterprise Server 11 Deployment Guide, Section 14.2, Setting Up the Server Holding the Installation Sources (the Deployment Guide comes with the product or is available from http://www.suse.com/documentation/sles11/).

    To save time and space, you can also loop mount ISO images on the installation server. For more information, see the SUSE Linux Enterprise Server 11 Deployment Guide, Section 14.2.6, Using ISO Images of the Installation Media on the Server.

    Figure 2-9 SAP Installation Wizard: SAP Installation Master Location

  3. In the next dialog you can select the SAP products you want to install. The offerings of available products depend on the media set and installation master you received from SAP; for example, see Figure 2-10.

    Figure 2-10 SAP Installation Wizard: Products Available

  4. For example, select Enhancement Package 5 for SAP ERP and click Next. Now the relevant part of the SAP media will be copied to the hard drive of the machine for the following SAP installation (after copying, see the contents of /data/SAP_CDs; the layout is explained later in this chapter). This is repeated for all necessary SAP media, with some additional simple questions.

  5. After copying the Installation Master Media, as step 2 enter the location of the database medium (e.g., the SAP MaxDB RDBMS); see Figure 2-11 for an NFS installation example.

    Figure 2-11 SAP Installation: Location of the Database Medium

  6. Now you must provide the medium with the application server framework. As step 3 you are asked for the Path to a Kernel or Java Medium. For example, if you want to install an ABAP-based system, provide the SAP Kernel for NW70 EHP1 Linux; see Figure 2-12 for an NFS installation example.

    Figure 2-12 SAP Installation: Path to a Kernel or Java Medium

  7. As step 4 for the Type of Installation, select Central Installation; see Figure 2-13.

    Figure 2-13 SAP Installation: Type of Installation

  8. As step 5 enter the location of the Export Media (e.g., the SAP CRM Installation Export DVD); see Figure 2-14 for an NFS installation example.

    Figure 2-14 SAP Installation: Location of the Export Media

    If needed, add the additional export media when installation wizard asks about it.

  9. Then you can then copy a CryptoAddOn medium; this is optional. Generally, the encryption feature depends on the SAP product. Starting with SAP NetWeaver 7.03/7.3 the cryptographic functionality is already included in the SAP NetWeaver DVDs and does not have to be specified separately. If the wizard asks you to insert the medium containing the cryptographic functionality, see the Section A.0, Downloading CryptoAddOn (SAPCryptoLib) on how to obtain the encryption files.

  10. At this point, all data required for the SAP installation is selected and copied to /data/SAP_CDs/0, one directory per medium:

    /data/SAP_CDs/0:
    total 48
    drwxr-xr-x 12 root root 4096 Sep 27 14:01 ./
    drwxr-xr-x  4 root root 4096 Sep 27 14:06 ../
    drwxr-xr-x  4 root root 4096 Sep 27 13:54 EXPORT1/
    drwxr-xr-x  4 root root 4096 Sep 27 13:56 EXPORT2/
    drwxr-xr-x  4 root root 4096 Sep 27 13:58 EXPORT3/
    drwxr-xr-x  4 root root 4096 Sep 27 14:00 EXPORT4/
    drwxr-xr-x  4 root root 4096 Sep 27 14:01 EXPORT5/
    drwxr-xr-x  4 root root 4096 Sep 27 14:03 EXPORT6/
    drwxr-xr-x 15 root root 4096 Sep 27 13:43 Instmaster/
    drwxr-xr-x  4 root root 4096 Sep 27 13:44 RDBMS-ADA/
    drwxr-xr-x  2 root root 4096 Sep 27 13:46 SAPLUP/
    drwxr-xr-x  7 root root 4096 Sep 27 13:46 UKERNEL/

    Each time you start the installation process again, a new directory will be created with a higher number (/data/SAP_CDs/0, /data/SAP_CDs/1, /data/SAP_CDs/2, etc.):

    /data/SAP_CDs/1:
    total 16
    drwxr-xr-x  4 root root 4096 Sep 27 14:07 ./
    drwxr-xr-x  4 root root 4096 Sep 27 14:06 ../
    drwxr-xr-x 15 root root 4096 Sep 27 14:06 Instmaster/
    drwxr-xr-x  4 root root 4096 Sep 27 14:07 RDBMS-ADA/
    

    /data/SAP_CDs is the default as specified in the /etc/sysconfig/sap-installation-wizard configuration file.

  11. In the following configuration dialogs, enter the details for the SAP installation.

    Figure 2-15 SAP System Parameters

    In Figure 2-15, as SID (SAP System ID) enter the three letter SAP System ID such as ERP. Enter the SAP Instance Number. Enter and repeat the SAP Master Password, which must fulfill the requirements described in the help text. Finally, specify the System T-Shirt-Sizing. The SAP SCS Instance Number is only required for Java installations. For details, see the online help on the left.

  12. In Figure 2-16, enter the virtual network settings, if needed.

    Figure 2-16 SAP Virtual Network Settings

  13. In Figure 2-17, select the the database log mode, and—if needed—install the SAP Cryptographic Library. Provide the location of the Crypto Add-On medium, if the wizard asks for it.

    Figure 2-17 SAP Database Log Mode

  14. At this stage it is possible to install a Supplement Medium; see Figure 2-18. For more information about a Supplement Media, see Section 5.3.1, Supplement Media.

    Figure 2-18 SAP Installation: Supplement Medium

  15. SUSE Linux Enterprise Server for SAP Applications 11 SP3 is delivered with the Linux Kernel 3.0. If the SAP Kernel does not support Linux Kernel 3.0 yet, a pop-up dialog (Figure 2-19) will inform you about the activation of a compatibility mode, which will make sure that you can still install your SAP product.

    Figure 2-19 SAP Installation: Compatibility Mode

  16. As the last step of the installation procedure, you can prepare the installation of another SAP product, if wanted. If you confirm that you wish to install an additional product, the installation procedure will enter into a new iteration and restart the installation process beginning with Step 4 to set up an additional product.

  17. Now all installation data (media and settings) is available to the wizard, and the final deployment of the SAP system can take place with the SAP installer (SAPinst). The SAP installer displays a visualization of the installation steps it performs; see Figure 2-20.

    Figure 2-20 SAP Installer (SAPinst)

NOTE: Installation Progress

Depending on your machine, it takes a while until the SAPinst tool shows up.

After the SAP installer has finished, you will see a short summary of the installation data.