Automating Linux and Unix System Administration Second Edition phần 6 pps

... 6, 2CIP)Eooqan6Klo(_]ilej*jap(OB(?]hebknje](QO)Bejcanlnejp65 362 164 ^63 ^64 46_ ^6] ,6^ ]60 26` .6- ]6. 360 065 365 /6a `6` ^6_ 26 6b0$N%afa_p(]__alp$p%ailkn]nehukn]__alp$l%ani]jajphu;l=qpdajpe_]pekjna]hi68dpplo6++orj*_]ilej*jap600/:?]ilej*japOq^ranoekjNalkoepknuL]ooskn`bkn#j]pa #6 =``ejc+atlknp+lgc+e242*na`d]p=``ejc+atlknp+lgc+oqjko[oqj0q=``ejc+atlknp+lgc+e242*`a^e]j=``ejc+atlknp+lgc+e242*`a^e]j+^ej`=``ejc$^ej%+atlknp+lgc+e242*`a^e]j+^ej`+j]ia`)_da_g_kjb=``ejc$^ej%+atlknp+lgc+e242*`a^e]j+^ej`+j]ia`)_da_gvkja?kiieppa`nareoekj-* ... procedure:orj))qoanj]ia9j]paeilknp+atlknp+lgcdpplo6++orj*_]ilej*jap+orj+^ej]nu)oanranX)iejepe]heilknpAnnknr]he`]pejcoanran_anpebe_]pabkn#dpplo6++orj*_]ilej*jap600/ #6 )Pda_anpebe_]paeojkpeooqa`^u]pnqopa`]qpdknepu*Qoapdabejcanlnejppkr]he`]papda_anpebe_]pai]jq]hhu?anpebe_]paejbkni]pekj6)Dkopj]ia6orj*_]ilej*jap)R]he `6 bnkiBne(,4=qc.,,4, 56 6,2CIPqjpehOqj(,3Oal.,,4, 56 6,2CIP)Eooqan6Klo(_]ilej*jap(OB(?]hebknje](QO)Bejcanlnejp65 362 164 ^63 ^64 46_ ^6] ,6^ ]60 26` .6- ]6. 360 065 365 /6a `6` ^6_ 26 ... 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...

... ood)gaucaj)pno])^.,04Cajan]pejclq^he_+lner]pano]gaul]en*Ajpanl]ooldn]oa$ailpubknjkl]ooldn]oa %6 Ajpano]ial]ooldn]oa]c]ej6Ukqne`ajpebe_]pekjd]o^aajo]ra`ejz+*ood+e`[no]*Ukqnlq^he_gaud]o^aajo]ra`ejz+*ood+e`[no]*lq^*Pdagaubejcanlnejpeo6/ ]64 16_ 36a 06. /6/ 261 _6, 562 06, 463 46^ /63 .6a ,6` _6, `geng<g]u^aa*kncThe ... ood)gaucaj)pno])^.,04Cajan]pejclq^he_+lner]pano]gaul]en*Ajpanl]ooldn]oa$ailpubknjkl]ooldn]oa %6 Ajpano]ial]ooldn]oa]c]ej6Ukqne`ajpebe_]pekjd]o^aajo]ra`ejz+*ood+e`[no]*Ukqnlq^he_gaud]o^aajo]ra`ejz+*ood+e`[no]*lq^*Pdagaubejcanlnejpeo6/ ]64 16_ 36a 06. /6/ 261 _6, 562 06, 463 46^ /63 .6a ,6` _6, `geng<g]u^aa*kncThe default output files are z+*ood+e`[no] and z+*ood+e`[no]*lq^ for the private and public keys, respectively.WHAT ... 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, ...

... 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 ... example: odahh_kii]j`o6]hh 66 +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 ... binaries:Atlena=bpan9$-1%I]t?kjja_pekjo9$1%Iqhpelha?kjja_pekjo9$pnqa%Hkc=hh?kjja_pekjo9$pnqa%PnqopGauoBnki9$-5.*-24*-%okh]neoxokh]neot4 266 _b[^]oa[l]pd9$+klp+_os+o^ej%_bnqj?kii]j`9$+klp+_os+o^ej+_b]cajp%`a^e]j 66 _b[^]oa[l]pd9$+qon+o^ej%_bnqj?kii]j`9$+qon+o^ej+_b]cajp%na`d]p 66 _b[^]oa[l]pd9$+qon+lgc+_bajceja+o^ej%`a^e]j*na`d]p*$okh]neoxokh]neot42 %66 p]ga]^aopcqaookjpdal]pdbknkpdandkopo(oej_aEqoa]ju 66 ^ahkspkgaal_bajcejalnk_o]herakj]hhdkopo_b[^]oa[l]pd9$+qon+lgc+_bajceja+o^ej%_bnqj?kii]j`9$+qon+lgc+_bajceja+o^ej+_b]cajp%CHAPTER...

... 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...

... (.,04I>iaiknuejop]hha`(Oane]h50,,110*Apdanjap]``naoo 46, 6. ,64 b63,6a](DkopE @6 4,4b3,a]*CHAPTER 6 ฀ SETTING UP AUTOMATED INSTALLATION119ecjkna6N?O+orj]`iejeopn]peraopqbbsehh^aecjkna`ej]hh_kleaoN?O*orjlnk_aooao6]ju 66 _bata_`naop]np ... to its serial port and watching the boot messages: _`+fqilop]np+Okh-,ol]n_+Okh]neo[-,+Pkkho+*+]``[ejop]hh[_heajp)e-5.*-24*-*.04)a, 46, ,6. ,64 b63,6a])lXdaiejcs]u6+fqilop]np+lnkbehao+]qnkn]+)odaiejcs]u6+fqilop]np+Okh-,ol]n_+)_Xdaiejcs]u6+fqilop]np+lnkbehao+]qnkn]+]qnkn]oqj0q=``ejcApdanjapjqi^anbkn]qnkn]*dkia*_]ilej*jappk+ap_+apdanoql`]pejc+ap_+^kkpl]n]ioNow ... information directly from our exam-ple systems):@D?LI=?=@@N6,,,03130=.0/@D?L***+?HEAJPEL6-5.*-24*-* I=OG6.11*.11*.11*,@D?LEL6-5.*-24*-*.1,C=PAS=UEL6-5.*-24*-*.10LTAHEJQT/*/-$@a^e]j(.,,3),/),5%?klunecdp$?%-550).,,1D*Lapan=jrejQJ@E`]p]oaciajp]p6,,,5@30,QJ@E`]p]oaciajpoeva6/.40QJ@E_k`aoaciajp]p6,,,5,,,,QJ@E_k`aoaciajpoeva6.0?,LTAajpnulkejpbkqj`$sadkla%]p5@3 06, ,B2IuEl]``naoooaaiopk^a?,=4,-?,-5.*-24*-*...

... section:OA?[OEJ?A[ALK?D9\`]pa'!o\CNKQL[BKNI=P9 QOANJ=IA6t6 JATPQE @6 L=OOS@[BKNI=P9 QOANJ=IA6t6 JATPQE @6 JATPQE @6 CA?KO6+dkia+ QOANJ=IA6+^ej+^]odOD=@KS[BKNI=P9 QOANJ=IA6 AJ?[L=OO6 OA?[OEJ?A[ALK?D6 36- 4 ,6- 063 66 If you use this ... `ec<ap_dh]ilcs*_]ilej*jap788::@eC5*/*0)L-*-88::<ap_dh]ilcs*_]ilej*jap7$-oanranbkqj`%77chk^]hklpekjo6lnejp_i`77Ckp]josan677)::DA=@AN88)kl_k`a6MQANU(op]pqo6JKANNKN(e `6 1533577bh]co6mn]]n`n]7MQANU6-(=JOSAN6-(=QPDKNEPU6-(=@@EPEKJ=H6-77MQAOPEKJOA?PEKJ67cs*_]ilej*jap*EJ=77=JOSANOA?PEKJ6cs*_]ilej*jap*2,,EJ=-5.*-24*-*-77=QPDKNEPUOA?PEKJ6_]ilej*jap*2,,EJJOap_dh]il*_]ilej*jap*CHAPTER ... `ec<ap_dh]ilcs*_]ilej*jap*788::@eC5*/*0)L-*-88::<ap_dh]ilcs*_]ilej*jap*7$-oanranbkqj`%77chk^]hklpekjo6lnejp_i`77Ckp]josan677)::DA=@AN88)kl_k`a6MQANU(op]pqo6JKANNKN(e `6 01.3077bh]co6mn]]n`n]7MQANU6-(=JOSAN6-(=QPDKNEPU6-(=@@EPEKJ=H6-77MQAOPEKJOA?PEKJ67cs*_]ilej*jap*EJ=77=JOSANOA?PEKJ6cs*_]ilej*jap*2,,EJ=-5.*-24*-*-77=QPDKNEPUOA?PEKJ6_]ilej*jap*2,,EJJOap_dh]il*_]ilej*jap*77=@@EPEKJ=HOA?PEKJ6ap_dh]il*_]ilej*jap*2,,EJ=-5.*-24*-*./577Mqanupeia6-5ioa_77OANRAN6-5.*-24*-*./51/$-5.*-24*-*./5%77SDAJ6PqaFqh.5- 360 160 5.,,477IOCOEVAn_r `6 42This...

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... these entries:฀฀+ap_+l]oos `6 c]jche]6t6-, 26- ,56C]jche]Ikjepkn6+qon+lgc+c]jche ]6+ ^ej+b]hoa฀฀+ap_+cnkql6c]jche]6t6-, 56 ฀฀+ap_+od]`ks6c]jche ]6 6- 0-, /6, 65555 563 666 Next, we created a cfengine ... thereafter:Bnki6klo<at]ilha*kncPk6klo<at]ilha*knc@]pa6Ikj(Oal-(.,,4]p .6 =IOq^fa_p6W?BAJCEJAORJYW3Yi]opanbehao+LNK@+ejlqpo+dkopcnkqlo+_b*orj[oanranNareoekj63=qpdkn6j]pa@]pa6.,,4),5),-, .6 ... $behaoanran%aj_nulp9pnqa`abeja9naop]np[jnlaodahh_kii]j`o6naop]np[jnla 66 +ap_+ejep*`+jnlanaop]nppeiakqp92,ejbkni9pnqa`ena_pkneao6]ju 66 +qon+lgc+ $jnla[ran%+o^eji9331ksjan9j]cekocnkql9j]c_i`ejbkni9b]hoa+qon+lgc+...

... contents:behpano6wnkkpksja`behaoKsjan6nkkpNaoqhp6KsjanyCHAPTER 12 ฀ IMPROVING SYSTEM SECURITY 363 Oal./, -61 .6, 0]qnkn]_bajceja6]qnkn]W-,13/Y6WE@3,.5 `]aikj*jkpe_aY@eo]^hejc+naj]iejcbeha+ap_+dkopo*amqerpk+ap_+dkopo*amqer*_b`eo]^ha`$laj`ejcnalkoepknuikra%Oal./, -61 .6, 0]qnkn]_bajceja6]qnkn]W-,13/Y6WE@3,.5 ... dppl6++sss*_l]j*knc or 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 ... with a convenient lanh`k_ command. lanh`k_Beha 66? klu provides documentation on the Beha 66? klu Perl module. lanh`k_)bouopai provides help on the built-in system function. Finally, lanh`k_)mpani...

... daemons, 361 – 362 firewalls and overview of, 365 – 366 TCP Wrappers, 366 – 367 Kerberos and, 365 LDAP and, 364 overview of, 354packet filteringiptables on Debian, 368 –371overview of, 367 – 368 sudo and, ... unsafe files, 362 – 363 shutting down daemons, 361 – 362 enhancing with SSH, 29firewalls and overview of, 365 – 366 TCP Wrappers, 366 – 367 Kerberos and, 365 LDAP and, 364 outputs directory and rsync daemon, ... are a few entries from +ap_+cnkql: nkkp6t6,6nkkp^ej6t6-6nkkp(^ej(`]aikj`]aikj6t6.6nkkp(^ej(`]aikjppu6t6 16 APPENDIX B ฀ WRITING CFENGINE MODULES3 96 ฀ ฀ ฀฀฀฀฀฀฀฀฀฀฀฀฀฀output...