Apple Mac OS X Server System Imaging and Software Update Administration For Version 10.4 or Later Manuel d'utilisateur Page 41
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Chapter 2 Creating Boot and Install Images 41
Installing Mac OS Updates
To use Network Install to install operating system updates on client computers, add the
system update package to an install image in the same way you would add any other
package. See “Adding Packages to a Boot or Install Image” on page 39.
You can download Mac OS updates from www.apple.com/support.
Adding Post-Install Scripts to Install Images
Post-install scripts let you make changes to software after it has been installed on client
computers. As the name implies, post-install scripts run at the end of the network
install process.
You can use the scripts to perform any tasks you want—within the limitations of the
scripts themselves. However, post-install scripts are typically used to make minor
changes to network-installed software when you don’t want to create additional install
images. For example, you may use post-install scripts to delete files, set startup items,
or create a user after installing software on a client computer.
Note: One good use of post-install scripts is to alter items in the ~/Library/Preferences/
ByHost folder to ensure that settings in the original image persist or to override them.
For example, you can create a script to replace the MAC address in the names of items
in the ByHost folder with the MAC address of the computer on which the image has
been installed. In this way, any imaged computer will retain the settings (such as
display and print preferences) in the original image.
Post-install scripts work only with install images created from volumes mounted on
your computer; they cannot be used with install images created from CDs. Post-install
scripts must be written as shell scripts. Perl scripts are not supported.
To add post-install scripts to a new install image you’re creating using System Image
Utility, click the Add (+) button in the Contents pane and select the scripts you want
to add.
To add post-install scripts to an existing image, open System Image Utility, click Images,
and select the image in the list. Then click Edit, click the Add (+) button in the Contents
pane, and select the scripts you want to add.
When you create an install image with post-install scripts, System Image Utility copies
the scripts to the /var/db/emptyScriptFolder/ directory. The Network Install application
runs the scripts in the order that you add them to the image in System Image Utility.
The order of the scripts is recorded in the text file /private/etc/emptyScript, which
contains a list of the paths to each of the scripts. To change the order the scripts are
executed, edit the text file, which you can do by mounting the image on your server.
- Mac OS X Server 1
- Contents 3
- About This Guide 7
- What’s in This Guide 8
- Using Onscreen Help 8
- The Mac OS X Server Suite 9
- Getting Documentation Updates 10
- Part I: System Imaging 13
- Administration 13
- About System Imaging 15
- Inside NetBoot 16
- Client Information File 17
- Shadow Files 17
- NetBoot Image Folder 18
- Property List File 19
- BootP Server 20
- Boot Files 20
- Network Install Images 21
- Before You Set Up NetBoot 21
- What You Need to Know 22
- Client Computer Requirements 22
- Network Hardware Requirements 23
- Network Service Requirements 24
- Capacity Planning 24
- Setup Overview — NetBoot 25
- Creating Mac OS X Boot Images 29
- Creating an OS Install Image 35
- About Packages 38
- Creating Packages 38
- Automating Image Installation 40
- Installing Mac OS Updates 41
- Setting Up NetBoot Service 43
- Enabling Images 45
- Deleting Images 47
- Editing Images 48
- Specifying the Default Image 48
- Setting Up Diskless Clients 51
- Starting Up Using the N Key 52
- Managing NetBoot Service 53
- Boot Images 55
- Balancing Boot Image Access 56
- Advanced NetBoot Tuning 57
- Solving Problems with System 59
- NetBoot Client 60
- Part II: Software Update 65
- About Software Update 67
- Overview 68
- Catalogs 68
- Install Packages 68
- Limiting User Bandwidth 69
- Revoked Files 69
- Log Files 69
- Setup Overview 71
- Setting Up Software Update 73
- Managing Software Update 77
- Update Service 79
- Glossary 81
- 82 Glossary 82
- Glossary 83 83
- 84 Glossary 84
- Glossary 85 85
- 86 Glossary 86
- 87 87
- 88 Index 88
- Index 89 89
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