H

HA clusters. See high-availability clusters/clustering HA Management Client utility, 568 ha.cf configuration file, 559-560 hard limits, 122, 530 hard links, 132

hardware abstraction layer (HAL), 496 Hardware Configuration screen, 27-28 hardware detection module, 267 hardware information, 217-220 Hardware Information option, 54 Hardware menu, 51

hardware resources, allocation of in Xen environment, 593 hardware settings, configuring, 27-28 haresources file, 559-563 hash marks (#), 504 head command, 78 Heartbeat, 543-544 configuration file, 545 differences between versions 1 and 2, 558 software resources, 545 starting on both nodes, 563 using for HA clustering, 558-563

Heartbeat 2-style clusters, 565-572

Heartbeat clusters, 563-564

help, accessing from command line, 83-87

Help interface, 41

here document, 508

hibernation mode, 182

hidden files, 77

High Availability option, 13, 58 high-availability (HA) clusters/clustering, 543-544 designing, 544-545 managing shared resources, 563-564 software resources, 545 using shared storage, 545-558 using Heartbeat, 558-563 high-performance clustering, 543 /home directory, 33-37, 92 /home partition, 147 home directory field, 97 host keys, 369-370 host names, 63

from DHCP servers, 475 specifying, 14-15

translating to IP addresses, 251-253 Host option, 373

host-based access restrictions, 431-432 Hostname and Name Server Configuration screen, 19 HTML, 419 HTML files, 419 HTTP, 419 HTTP servers, 5, 63 httpd process, 421-422 httpd.conf file, 423 http_access tags, 485-487 http_port tag, 481 hwup command, 496 Hypertext Markup Language (HTML), 419 Hypertext Transfer Protocol (HTTP), 419 hypervisor, Xen, 593-594

IDE devices enabling DMA access for, 55 starting, 182 ide= option, 182 IEEE EIA-64 ID, 247 if, 517

if . . . then . . . else construction, 518-520 ifconfig command, 247, 632-633

bringing interfaces up and down with, 244 configuring network card with, 243 configuring network interface with, 242, 244 displaying information with, 243 ifdown tool, 241 ifprobe tool, 241 ifrenew tool, 241 ifstatus tool, 241-242

iftop utility, 260-261 ifup tool, 241 image viewers, 43 Images menu, 43 IMAP, 318, 333-335 incoming mail filtering, with Procmail, 335-336 processing, by Postfix, 319 receiving, using Cyrus IMAPd, 333-335 retrieving, with POP3, 336-337 incremental backups, 134 infrared devices, 55 inheritance, 110 INIT INFO, 195, 199 init process, 179, 189, 191-197 init q command, 194 initdefault option, 192 initrd, 189, 494

INITRD_MODULES variable, 494 inittab configuration file, 179, 197-198 inodes, 132, 141 insert mode, Vi, 82 insserv command, 200 insserv quota command, 124 insservice xinetd command, 386 Install Software item, 41 installation files, 37 installation media, 165-168 installation menu, 4 installation servers, 3, 5, 70

automatic installation of, with AutoYaST, 655-658

configuring TFTP for PXE boot, 653-655 creating, 647-652 remote, 659-661 uses of, 647 installation sources, 5 installed packages, 84-86 interactive processes, 203-205 internal commands, 84, 505 Internet connectivity, testing, 20 Internet Gateway setting, 13 Internet Printing Protocol (IPP), 267 Internet Protocol (IP), 437 ip address show command, 245-247 IP addresses address length, 247 assigning, with ip tool, 246-247 automatic assignment of, with neighbor discovery protocol, 248 changing, of network card, 241 default gateway, 238

displaying setup information, with ip tool, 245

of shared resource, 561 specifying, 19, 236-238 translation of, to names, 441 virtual, using ipconfig with, 244 IP configuration, verifying, 632-633 ip link show command, 245-246

ip tool assigning IP addresses with, 246-247 configuring network interface using, 244-247 displaying IP address information with, 245 objects, 244

showing device attributes with, 245-246 specifying default gateway with, 251 ipconfig command, 244 IPsec connections, 582 iptables, tuning netfilter with, 584-590 iptables -L command, 633-634 iptables command, 577 IPTraf tool, 259-260 iputils package, 249 IPv6 addresses, 247 address types, 248

assigning, in SUSE Linux Enterprise Server,

248-249 managing, 247-249 neighbor discovery protocol, 248 IrDA printers, 268 iSCSI, 546, 550 iSCSI initiator, 66, 550 iSCSI target, 66 ISDN Adapters option, 18 ISO files, mounting, 127 iso9660 file system, 127

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