Automating Linux and Unix System Administration Second Edition phần 10 potx

... repetition operators (and others support XwXy instead). The acnal command can also be found on many systems. If you find yourself limited by the standard cnal command and the differences between ... (central host), 103 105 , 161greediness, 386grep command, 396grep program, 386–389group IDs, NFS and, 233Hhacks, postinstall script and, 128hemingway, 338homogenizing systems, 13hooks ... Network and System Adminis-tration, Second Edition (Burgess), 6private DNS, setting upBIND configuration automating, 178–188overview of, 172–178overview, 171private keys, trust in cfengine and, ...

Automating Linux and Unix System Administration Second Edition phần 1 potx

... tasks that you might never have considered automating. Automating Linux and Unix System Administration Second Edition Nate Campi and Kirk BauerINTRODUCTIONxxivDownloading the CodeThe ... Automating Linux and Unix System Administration, Second Edition Copyright © 2009 by Nate Campi, Kirk BauerAll rights reserved. ... command oq`k)g is executed. xvAbout the AuthorsNATE CAMPI is a UNIX and Linux system administrator by trade, cur-rently working as a UNIX operations manager in San Francisco. His system administration...

Automating Linux and Unix System Administration Second Edition phần 9 potx

... with Perl as standard software. However, most administrators find that adding Perl to all of their UNIX systems is well worth the effort, and it comes preinstalled on all major Linux distributions. ... very popular in the system administration community and may very well be the most popular scripting language in use today. The major disadvantage is that some com-mercial UNIX variants may not ... bpl6++bpl*_l]j*knc. These modules were contributed by thousands of Perl developers and systems admin-istrators around the world. They can save you a lot of time, and if you upload your own modules, you can...

Automating Linux and Unix System Administration Second Edition phần 2 pps

... each system by logging in and manually run-ning the _b]cajp command. Cfengine follows a good theory in system- administration automation: the more ways you can initiate changes to a system, ... configuration file. You can choose from approximately 100 possible commands in this section. These commands allow you to check and modify text files (and, in a few cases, binary files).We won’t go ... +qon+hk_]h or a similar directory through NFS—or Andrew File System (AFS) or Distributed File System (DFS) and utilize the shared files from all systems. But most SAs today would see a real disadvantage...

Automating Linux and Unix System Administration Second Edition phần 3 ppsx

... master, system upgrade, and patching procedures is easy before the systems and procedures are put into use. Once you’ve been deploying and updating systems using automated means, reorganizing and ... odahh_kii]j`o6]hh66+qon+^ej+n`]pa)ojpl-peiakqp9/,na`d]p*Dn,.[M-66+qon+hk_]h+o^ej+hkc[l]_g]cao^]_gcnkqj`9pnqaOn all systems, the n`]pa command is executed to synchronize the system s clock. Cfengine terminates this command in 30 seconds if it has not completed. On systems running Red Hat Linux, a ... run Linux, and the NFS server hosts run Solaris.One of the major goals of this project is to rapidly deploy and configure the systems hosting the site, as well as to deploy application and...

Automating Linux and Unix System Administration Second Edition phần 4 pptx

... AUTOMATING A NEW SYSTEM INFRASTRUCTURE163Internal NTP MastersWe’ll use our cfengine master host (goldmaster.campin.net) and our Red Hat Kickstart system (rhmaster.campin.net) as the two systems ... to choose Linux over Solaris systems to handle this role. You should find it quite easy to modify this procedure to use one or more Solaris systems to synchronize off site instead, and have ... con-฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀฀ 1. Boot server: This system provides network clients with the information they need to boot and install the operating system. 2. Profile server: This system hosts what the JumpStart...

Automating Linux and Unix System Administration Second Edition phần 5 docx

... 5.฀฀฀฀฀฀฀฀฀+ap_+]qpk*i]opan and +ap_+]qpk*dkia. On Solaris, the files are +ap_+]qpk[i]opan and +ap_+]qpk[dkia. The ]qpk*i]opan and ]qpk[i]opan files map filesystem paths to files that contain the commands to ... router at -5.*-24*-*- that handles routing, Network Address Translation (NAT), and DNS- caching services. After we get DNS up and running on one or more of our UNIX systems, we’ll have cfen-gine ... the host aurora and inspect the new +ap_+naokhr*_kjb:CHAPTER 7 ฀ AUTOMATING A NEW SYSTEM INFRASTRUCTURE165Create the file +r]n+jpl+jpl*`nebp as nkkp using the pkq_d command, and enable the...

Automating Linux and Unix System Administration Second Edition phần 6 pps

... applications and data from mul-tiple systems. You can modify the files on any system, and the changes become instantly available on all other systems.Problems with network filesystems begin ... Network filesystems do not operate at 100 percent efficiency when these prob-lems occur. In many cases, the network filesystem might not work at all and could even hang the UNIX /Linux host.We ... this book’s second edition, that rsync now uses the SSH protocol by default to communicate with a remote system, allowing it to use all the standard SSH authentication methods and perform encrypted...

Automating Linux and Unix System Administration Second Edition phần 7 pdf

... has bugs; and all manner of issues crop up that cause hosts and applications to fail. System and service monitoring is automation’s com-panion tool, used to notify us when systems and applications ... chapter, and we believe that our choices will scale with your environment as it grows.฀have chosen Nagios for our system and service monitoring system. Nagios is flex-ible and mature, and help ... schedule plug-ins and handle notifications, plug-ins to perform host and service checks, NRPE to run plug-ins on remote hosts, and the Nagios CGI web interface to display status and to interact...

Automating Linux and Unix System Administration Second Edition phần 8 pptx

... COURSEMost system administrators are familiar with the `ebb and l]p_d commands. The `ebb command is used to compare text files line by line and show the differences. The l]p_d command takes a ... of state on the system, relays the state changes on to other systems via TCP or multicast UDP, listens for and gathers the state of other cikj` daemons in the local cluster, and answers request ... run with many more as the total number of systems at your site increases.CHAPTER 10 ฀ MONITORING296Figure 10- 1. Nagios service detail screen for the system localhost ฀฀฀฀฀฀฀฀฀฀฀฀฀in...

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