Linux System Administration Recipes A Problem-Solution Approach

■ INDEXlimiting over ssh, 138—140rapid restore with, 104—108using with SSH keys, 108—110RT (Request Tracker) ticketing systembasic configuration, 235installing, 234overview, 234rights system, 238—239scrips, 239—240secure setup for, creating, 241—243setting up, 235—237tickets, creating via e-mail, 240—241■SSatisfy Any/Satisfy All directives, 168scalpel, 116schemas (LDAP), 28scrips (RT), 239—240scriptsadding new users to LDAP with, 49—52LDAP, modifying/deleting entries with, 52—55querying LDAP with, 55—57setting display style of, 7testing, 9—10searching for strings, 193securitymonitoring for break-ins with chkrootkit,152—154password policy. See password policysecure setup for RT, 241—243securing web sites via Apache withKerberos, 169—170securing web sites with htaccess, 167—168sed stream editor (text)appending/inserting/changing lines, 190—191deleting lines with, 187—188editing within lines, 188—189overview, 187sed regexp syntax, 189self-signed certificates, 29—30ServerAliveInterval, 140—141services/hostgroups, using in Nagios, 68—69shell script wrapper, running strace in, 221showkey utility, 204site manifest, setting up (Puppet), 81—83slave LDAP server, 42—46snapshot filesystems, 130sorter script, 117SourceForge, 19Springnote application, 3SSHbrute-force attacks, stopping with iptables,151—152connections, transferring files over, 142—143IdentityFile option, 141—142Kerberizing setup of, 143—144Kerberos SSH and logon, 26—28limiting rsync over, 138—140setting options on, 140—141ssh -X, remote login with, 208—209ssh-add, 135ssh-agent, 135, 137—138ssh-xfer, 142—143SSH keysmanaging with keychain, 137—138using and limiting, 135—136using with rsync, 108—110SSL certificates, setting up for Apache2, 162—164static linking, 219strace, examining system calls with, 218—221strings, searching for, 193striping (RAID arrays), 128—129subroutines, defining, 111subscribe dependency (Puppet), 83Subversionadding multiple files to, 11—12aliases, version control with, 10—11branching repositories, 15—16dividing repositories, 14—15excluding files with, 13log messages, adding labels to, 11merging repositories, 16sudolimiting usage of, 148—149password usage options, 149—150svn mkdir command, 16svnadmin load command, 16SWITCH statements, Perl and, 252synchronizing root setup, 78—79syntax notes (Perl), 251—252sysadmin work. See also bug fixinglarge projects, executing, 243—244managing interruptions, 231—232RT ticketing system. See RT (RequestTracker) ticketing systemtips for serving co-workers, 244—245tracking work and problems, 233258Download at WoweBook.Com