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4 The Virtualization Cookbook for Red Hat Enterprise Linux 5.2
Use of manual installation versus cloning script or EXEC
Two methods of cloning are described: manually, and using a Linux bash script. The
manual method was chosen so that you will better learn the described concepts. However,
the Linux script is also provided so you can save time.
1.4 Infrastructure design
To install and configure z/VM, and install, configure and clone Linux, or to provision virtual
servers, there must be a certain infrastructure design in place. A System z server with
associated resources and the z/VM operating system define much of this infrastructure.
Figure 1-1 shows a block diagram of a System z10 with multiple LPARs. z/VM 5.4 is installed
in one of these LPARs. z/VM comes with many user IDs predefined. The most important six
IDs are shown in the z/VM LPAR above the dashed line. Below the dashed line, you see the
user IDs described in this book.
Figure 1-1 System infrastructure and z/VM user IDs
The user IDs that are described in this book have the following functions:
LNXMAINT This is a user ID on which to store files that will be used by both
CMS and Linux.
LINUX00 or LNXINST This is the controller that does the cloning. It also serves as the
Linux install server, and has other functions.
LINUX01-04 This is the user IDs that will be cloned to. Each virtual server is
configured with a two 3390-3 minidisks to allow for slightly more
than 4 GB of space.
L
1
R
A
P
L
n
R
A
P
MAINT: SYSTEM CONFIG (CF1), USER DIRECT(2CC)
TCPMAINT: SYSTEM DTCPARMS (198)
AUTOLOG1: PROFILE EXEC (191)
LPAR 2: z/VM 5.4 on a z10
TCPIP: <system_ID> TCPIP (TCPMAINT 198)
DTCVSW1 and DTCVSW2: VSWITCH controllers
Resources:
CPU: 2 IFLs, shared
Memory: 3GB/1GB or more
Disk: 25 3390-3 DASD
Network:16 OSA-E addresses
TCP/IP 5 TCP/IP addresses
LNXMAINT: CMS files on 192
LINUX01: A Web server
LINUX02: An LDAP server
OSA Express
OSA Express
Physical switch
PC Linux
NFS server
Desktop
machine
LINUX00 or LNXINST: The "controller"
LINUX04: An application development server
LINUX03: A File server
SLES10S2 or RHEL52: The "golden image"
- The Virtualization Cookbook 1
- Linux 5.2 3
- October 2008 3
- First Edition (October 2008) 4
- Contents 5
- Contents v 7
- Contents vii 9
- Trademarks 12
- The team that wrote this book 13
- Chapters and appendixes 15
- Conventions 17
- Comments welcome 17
- 1.1 What is virtualization 20
- 1.2 This book’s approach 21
- 1.4 Infrastructure design 22
- Planning 25
- 2.1 Bill of materials 26
- 2.2 z/VM conventions 27
- 2.3 Disk planning 28
- DASD versus SCSI/FCP 29
- 3390-3s versus 3390-9s 29
- Disk storage per Linux image 29
- 2.4 Memory planning 30
- 2.5 Password planning 30
- 2.6 Planning worksheets 31
- 2.7 Blank worksheets 34
- 2.7.2 z/VM DASD worksheet 35
- Configuring a desktop machine 37
- Figure 3-2 Setting logging 39
- Saving sessions 41
- 3.2 Setting up a VNC client 42
- 3.3 3270 emulators 43
- 4.1 Installing z/VM from DVD 46
- ==> instplan 50
- Running INSTDVD 52
- Figure 4-8 Load window 53
- ==> cold drain noautolog 54
- ==> no 54
- ==> disc 54
- 4.2 Configuring TCP/IP 56
- not specified 62
- 4.6 Adding paging volumes 65
- Using the CPFORMAT EXEC 67
- 4.6.4 Testing the changes 71
- 4.8.2 Testing the changes 78
- 4.9.1 VM security products 79
- ==> sampnss cms 86
- Servicing z/VM 89
- 5.1 Applying a PTF 90
- 6.4 Enabling the NFS server 106
- 7.2.3 Configuring VDISK swap 128
- 7.2.4 Configuring yum 128
- 7.2.5 Adding additional RPMs 129
- 7.2.10 Configuring SSH keys 134
- 4 6763) is running 135
- 8.2.4 Adding additional RPMs 145
- 8.2.8 Configuring SSH keys 145
- 8.2.9 Rebooting the system 146
- 8.2.10 Verifying the changes 146
- Detach the source disks 151
- Detach the target disks 154
- IPL the target system 154
- 9.3.2 Using the clone script 157
- FLASHCOPY 159
- Installation Server 159
- Master Image 159
- 9.5 Reviewing system status 163
- LNXMAINT 164
- Delete these 167
- Servicing Linux with Red Hat 171
- 12.1.2 Testing Apache 179
- 12.1.3 Turning on a firewall 179
- 12.1.6 Apache resources 182
- Start the LDAP service 184
- Deleting duplicate users 186
- Set a password 189
- 12.3.4 Adding a Samba user 191
- 12.3.6 Testing your changes 192
- 12.3.7 Configuring printing 193
- 12.4.1 Additional resources 194
- Linux kernel development 195
- Web development 195
- Miscellaneous recipes 197
- 13.1 Adding a logical volume 198
- Volume Group - optvg 200
- Creating a physical volume 204
- Extending the volume group 204
- /var/lib/ldap 205
- Configuring LDAP 206
- Configuring automount 207
- 13.4 Rescuing a Linux system 208
- Monitoring z/VM and Linux 211
- INIDICATE LOAD 212
- INDICATE QUEUES EXP 213
- Getting help 214
- Determining who is logged on 214
- Determining storage or memory 215
- Determining software level 215
- 14.2.3 Configuring PERFSVM 218
- Using a Web browser interface 220
- Using a 3270 interface 222
- 14.3 Monitoring Linux 223
- PURGE NSS NAME MONDCSS 228
- CP SAVESEG MONDCSS 228
- References 229
- Quick reference sheets 230
- Prefix commands 231
- :help give help 232
- Appendix B. z/VM source code 233
- The CPFORMAT EXEC 234
- The CHPW540 XEDIT macro 238
- The LABEL540 EXEC 241
- The LABEL540 XEDIT macro 243
- Linux source code 245
- Related publications 257
- Online resources 258
- How to get Redbooks 258
- Help from IBM 258
- Hat Enterprise Linux 5.2 265
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