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138 The Virtualization Cookbook for Red Hat Enterprise Linux 5.2
3. Copy and then edit the supplied sample configuration file to reflect the values of the new
Linux system:
# cp /etc/clone/rhel.conf.sample /etc/clone/linux01.conf
# vi /etc/clone/linux01.conf
4. Edit the new configuration file with the appropriate values for your system. This file is
based on the RHEL52 CONF file that you used earlier when building the RHEL 5.2 golden
image; see 7.1.3, “Preparing LNXINST bootstrap files” on page 94.
If the new Linux image is going to be on the same network as the golden image, you are
likely to only have to change two variables: the Internet Protocol (IP) address (IPADDR)
and the Domain Name System (DNS) name (HOSTNAME). In the following example, the IP
address is set to 10.1.40.91 and the DNS name to linux01.example.com.
# vi /etc/clone/linux01.conf
# Define the DASD that should be included as a part
# of the clone.
DASD=100,101 1
DASD_ROOT=100 2
VG_NAME=system_vg 3
LV_ROOT=root_lv 4
# Define networking information that will be used for the host.
IPADDR=9.12.5.31
SUBCHANNELS=0.0.0600,0.0.0601,0.0.0602
HOSTNAME=virtc531.itso.ibm.com
NETTYPE=qeth
NETMASK=255.255.252.0
NETWORK=9.12.4.0
SEARCHDNS=itso.ibm.com
BROADCAST=9.12.4.255
GATEWAY=9.12.4.1
DNS=9.12.6.7
MTU=1500
Note the following points for the numbers in black above:
1 This is the DASD range. You may enter dashes (-) or commas (,) to specify address
ranges or specific disks, respectively. Make sure that the range following DASD= is one
continuous block of text with no spaces added.
2 This is the DASD that contains the root file system. If the root file system is on LVM, this
value is ignored.
3 If the root file system of the golden image is on LVM, specify the volume group name
here. If you followed the installation procedure in Chapter 8, “Installing and configuring
RHEL 5.2” on page 119, the volume group name is system_vg.
4 If you specified a value for 3 (VG_NAME), specify the logical volume name of the root file
system.
5. Save the file and log off root.
This is your first time cloning, therefore it is important to verify some initial settings of the
new user ID. The next steps confirm that the LINUX01 user ID has the disk configuration
required for a successful clone and IPL.
6. Log in to LINUX01.
7. Answer n to the question Do you want to IPL Linux from minidisk 100? y/n. Verify that
the minidisks at addresses 100 and 101 and the virtual disk (VDISK) at addresses 300
and 301 are read/write:
==> q da
- 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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