Automating Linux and Unix System Administration Second Edition phần 8 pptx

... COURSE Most 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 answe...

Ngày tải lên: 13/08/2014, 04:21

... AUTOMATING A NEW SYSTEM INFRASTRUCTURE 163 Internal NTP Masters We’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, a...

Ngày tải lên: 13/08/2014, 04:21

... tasks that you might never have considered automating. Automating Linux and Unix System Administration Second Edition Nate Campi and Kirk Bauer INTRODUCTION xxiv Downloading the Code The ... 380 Other Scripting Languages 382 Perl Resources 383 Basic Regular Expressions 383 Characters 383 Matching Repeating Characters 384 Other Special Characters 385 Marking and Ba...

Ngày tải lên: 13/08/2014, 04:21

... 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, ... example to any number of systems. We would recommend, though, that you start out with just two systems. Once you get cfengine up and running on those systems, expanding the system to o...

Ngày tải lên: 13/08/2014, 04:21

... 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`9pnqa On all systems, the n`]pa command is execut...

Ngày tải lên: 13/08/2014, 04:21

... the `ec command: `ec<ap_dh]ilcs*_]ilej*jap* 7 88 ::@eC5*/*0)L-*- 88 ::<ap_dh]ilcs*_]ilej*jap* 7$-oanranbkqj`% 77chk^]hklpekjo6lnejp_i` 77Ckp]josan6 77)::DA=@AN 88) kl_k`a6MQANU(op]pqo6JKANNKN(e`601.30 77bh]co6mn]]n`n]7MQANU6-(=JOSAN6-(=QPDKNEPU6-(=@@EPEKJ=H6- 77MQAOPEKJOA?PEKJ6 7cs*_]ilej*jap*EJ= 77=JOSANOA?PEKJ6 cs*_]ile...

Ngày tải lên: 13/08/2014, 04:21

... 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 ... Managing NFS and NIS, Second Edition by Hal Stern, Mike Eisler, and Ricardo Labiaga (O’Reilly Media Inc., 2001). The biggest disadvantage of NFS is that it relies on the network and a...

Ngày tải lên: 13/08/2014, 04:21

... 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- ibl...

Ngày tải lên: 13/08/2014, 04:21

... 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...

Ngày tải lên: 13/08/2014, 04:21

... expressions characters matching repeating, 384 – 385 overview of, 383 – 384 special, 385 marking and back referencing, 385 – 386 overview of, 383 reload_bind class, 181 Remote Procedure Calls (RPCs), 233 remote systems configuring ... Network and System Adminis- tration, Second Edition (Burgess), 6 private DNS, setting up BIND configuration automating, 1 78 188 overview of,...

Ngày tải lên: 13/08/2014, 04:21