Sicabanga ukwandisa amandla Omphathi Wokucushwa Kwesikhungo Sesistimu (umkhiqizo wokuphatha ingqalasizinda ye-IT) lapho siqalisa ama-PC omsebenzisi kunethiwekhi sisebenzisa i-PXE. Sakha imenyu yokuqalisa esekelwe ku-PXELinux ngokusebenza kweSistimu Yesikhungo futhi sengeza ukuskena okulwa namagciwane, ukuxilonga nokuthola izithombe. Ekupheleni kwesihloko, sithinta izici ze-System Center 2012 Configuration Manager ngokuhlanganyela neWindows Deployment Services (WDS) uma ibhutha nge-PXE.
Senza zonke izenzo endaweni yokuhlola esivele inesiphathi se-System Center 2012 se-SP1 esifakiwe, isilawuli sesizinda, kanye nenani lemishini yokuhlola. Kucatshangwa ukuthi i-SCCM isivele isebenzisa inethiwekhi isebenzisa i-PXE.
entry
Indawo yokuhlola iqukethe imishini embalwa ebonakalayo. Yonke imishini ine-Microsoft Windows Server 2008 R2 (x64) yesivakashi OS efakiwe, i-adaptha yenethiwekhi ye-E1000, Isilawuli se-SCSI: LSI Logic SAS
Igama (Izindima)
Ikheli le-IP / igama le-DNS
Ukusebenza
I-SCCM (I-System Center Configuration Manager)
192.168.57.102
sccm2012.test.local
Kufakiwe Isiphathi Sokucushwa Kwesikhungo Sesistimu 2012 SP1
I-DC (AD,DHCP,DNS)
192.168.57.10
dc1.test.local
Indima yesilawuli sesizinda, iseva ye-DHCP kanye neseva ye-DNS
TEST (Umshini wokuhlola)
192.168.57.103
test.test.local
Okokuhlola
G.W. (Isango)
192.168.57.1
Umzila phakathi kwamanethiwekhi. Indima yesango
1. Engeza i-PXELinux ku-SCCM
Senza izenzo emshinini lapho Umphathi Wokucushwa Wesikhungo Sesistimu efakwe khona
- Ake sinqume uhla lwemibhalo lapho amafayela e-WDS atholakala khona ukuze alandwe, ngoba lokhu sibheka ebhukwini ngenani lepharamitha.
RootFolderegatsheniHKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesWDSServerProvidersWDSTFTP
Inani elizenzakalelayoC:RemoteInstall
Amafayela azolandwa endaweni ye-SCCM yokuphakelwa atholakala ohlwini lwemibhalosmsbootx86ΠΈsmsbootx64kuye ngokuthi i-architecture.
Okokuqala, setha uhla lwemibhalo lwezakhiwo ezingama-32-bit, ngokuzenzakalelayoc:Remoteinstallsmsbootx86 - Landa ingobo yomlando nokwakamuva . Kopisha kusuka ku-syslinux-5.01.zip kuye
c:Remoteinstallsmsbootx86amafayela alandelayo:
memdisk, chain.c32, ldlinux.c32, libcom32.c32, libutil.c32, pxechn.c32, vesamenu.c32, pxelinux.0
Amafayela engeziwe ayadingeka ukuze kugwenywe iphutha elinjalo.
- Π
c:Remoteinstallsmsbootx86qamba kabushapxelinux.0Π²pxelinux.com
Kufoldac:remoteinstallsmsbootx86yenza ikhophiabortpxe.comfuthi uyiqambe kabusha ukuzeabortpxe.0
Uma kungenjalo ukuqamba kabusha kusandiso.0, bese ngokwesibonelo isiyaloKernel abortpxe.comizohluleka ngephutha elilandelayo: Ukuqalisa i-kernel kwehlulekile: Inombolo yefayela embi
Ku-PXELINUX, isandiso sefayela lokulanda kufanele sisethwe ngokuya ngepuletinone or other Linux kernel image .0 PXE bootstrap program (NBP) [PXELINUX only] .bin "CD boot sector" [ISOLINUX only] .bs Boot sector [SYSLINUX only] .bss Boot sector, DOS superblock will be patched in [SYSLINUX only] .c32 COM32 image (32-bit COMBOOT) .cbt COMBOOT image (not runnable from DOS) .com COMBOOT image (runnable from DOS) .img Disk image [ISOLINUX only]Source: isigaba "Kernel file"
- Ukuze ungacindezeli ukhiye we-F12 izikhathi eziningana lapho ulayisha i-SCCM ngemenyu, qamba kabusha i-pxeboot.com kuya ku-pxeboot.com.f12, kopisha pxeboot.n12 ku-pxeboot.com
Uma lokhu kungenziwanga, lapho-ke sikhetha, sizothola umlayezo onjalo njalo
Qaphela: Ungakhohlwa ukuqamba kabusha lawa mafayela kufolda ye-x64 futhi. uma ilayishax86wdsnbp.comkusuka kufolda ye-x86, isilayishi sinquma ukwakheka kweprosesa futhi ifayela elilandelayo lilayishwa kusuka kufolda ngezakhiwo ezihambisanayo. Ngakho, ku-x64, ifayela elilandelayo ngeke libex86pxeboot.com, futhix64pxeboot.com - Landa / dala , ukulungiswa okungu-640x480, kopisha kufolda efanayo. Dala ifolda
ISOlapho sizobeka khona izithombe ze-ISO. Dala ifoldapxelinux.cfgkwe-configs. - Kufolda ye-pxelinux.cfg, dala ifayela elizenzakalelayo, ngombhalo wekhodi okungeyona i-unicode, nokuqukethwe
okuzenzakalelayo (Chofoza ukuze ubonise)# ΠΈΡΠΏΠΎΠ»ΡΠ·ΡΠ΅ΠΌ Π³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΌΠ΅Π½Ρ DEFAULT vesamenu.c32 PROMPT 0 timeout 80 TOTALTIMEOUT 9000 MENU TITLE PXE Boot Menu (x86) MENU INCLUDE pxelinux.cfg/graphics.conf MENU AUTOBOOT Starting Local System in 8 seconds # Boot local HDD (default) LABEL bootlocal menu label Boot Local menu default localboot 0x80 # if it doesn't work #kernel chain.c32 #append hd0 # ΠΡ ΠΎΠ΄ Π² ΠΌΠ΅Π½Ρ ΠΏΠΎ ΠΏΠ°ΡΠΎΠ»Ρ Qwerty, Π°Π»Π³ΠΎΡΠΈΡΠΌ MD5 label av menu label Antivirus and tools menu PASSWD $1$15opgKTx$dP/IaLNiCbfECiC2KPkDC0 kernel vesamenu.c32 append pxelinux.cfgav.conf label sccm menu label Start to SCCM COM32 pxechn.c32 APPEND sccm2012.test.local::smsbootx86wdsnbp.com -W label pxe64 menu label Start to x64 pxelinux COM32 pxechn.c32 APPEND sccm2012.test.local::smsbootx64pxelinux.com LABEL Abort MENU LABEL Exit KERNEL abortpxe.0Kufolda
pxelinux.cfgdala ifayelagraphics.confngokuqukethwe
graphics.conf (Chofoza ukuze ubonise)MENU MARGIN 10 MENU ROWS 16 MENU TABMSGROW 21 MENU TIMEOUTROW 26 MENU COLOR BORDER 30;44 #00000000 #00000000 none MENU COLOR SCROLLBAR 30;44 #00000000 #00000000 none MENU COLOR TITLE 0 #ffffffff #00000000 none MENU COLOR SEL 30;47 #40000000 #20ffffff MENU BACKGROUND background.png NOESCAPE 0 ALLOWOPTIONS 0Kufolda
pxelinux.cfgdala ifayelaav.confngokuqukethwe
av.conf (Chofoza ukuze ubonise)DEFAULT vesamenu.c32 PROMPT 0 MENU TITLE Antivirus and tools MENU INCLUDE pxelinux.cfg/graphics.conf label main menu menu label return to main menu kernel vesamenu.c32 append pxelinux.cfg/default label drweb menu label DrWeb kernel memdisk append iso raw initrd=isodrweb.iso label eset menu label Eset kernel memdisk append iso raw initrd=isoeset_sysrescue.iso label kav menu label KAV Rescue CD KERNEL kav/rescue APPEND initrd=kav/rescue.igz root=live rootfstype=auto vga=791 init=/init kav_lang=ru udev liveimg doscsi nomodeset quiet splash #ΠΠ°Π³ΡΡΠΆΠ°Π΅ΠΌ ISO ΠΏΠΎ ΠΏΠΎΠ»Π½ΠΎΠΌΡ ΠΏΡΡΠΈ, ΠΌΠΎΠΆΠ½ΠΎ Π·Π°Π³ΡΡΠΆΠ°ΡΡ Ρ Π΄ΡΡΠ³ΠΎΠ³ΠΎ TFTP label winpe menu label WinPE from another TFTP kernel sccm2012.test.local::smsbootx86memdisk append iso raw initrd=sccm2012.test.local::smsbootx86isoWinPE_RaSla.iso label clonezilla menu label Clonezilla kernel memdisk append iso raw initrd=isoclonezilla.iso - Njengomphumela, uhla lwemibhalo lwe-c:remoteinstallsmsbootx86 luqukethe ukwakheka
c:remoteinstallsmsbootx86
pxelinux.cfgiketango.c32
ldlinux.c32
libcom32.c32
libutil.c32
pxechn.c32
vesemenu.c32
pxelinux.com
ingemuva.png
pxelinux.cfg
pxelinux.cfg
pxelinux.cfg
ISO
abortpxe.0
wdsnbp.com
ebobgfw.efi
wdsmgfw.efi
imvu.exe
fxeboot.n12
pxeboot.com
abortpxe.comezenzakalelayo
av.conf
igraphics.conf
*.iso - Ngokwakhiwa kwe-x64, nathi sikopisha futhi sidale isakhiwo esifanayo kufolda
c:remoteinstallsmsbootx64
Ukwengeza
Uma usebenzisa umyalomenu PASSWDiphasiwedi ingasethwa njengoba injalo, noma sebenzisa i-algorithm ye-hashing ngokungeza isiginesha ehambisanayo ekuqaleni kwepharamithaI-Algorithm
IsigineshaMD5
$1I-SHA-1
$4SHA-2-256
$5SHA-2-512
$6Ngakho nge-password
Qwertykanye ne-algorithm ye-MD5menu PASSWD $1$15opgKTx$dP/IaLNiCbfECiC2KPkDC0Ungakwazi ukukhiqiza iphasiwedi, isibonelo, ngokusebenzisa i-inthanethi hashi generator , ulayini
MD5(Unix)
2. Setha i-PXELinux boot
Manje sizokhombisa ukuthi ungayilayisha kanjani i-pxelinux.com futhi uthole imenyu.
Ukucacisa i-bootloader ye-pxelinux.com ngokusebenzisa ukusebenza kwe-WDS akusebenzi ku-SCCM. Buka Imiyalo
wdsutil /set-server /bootprogram:bootx86pxeboot.com /architecture:x86
azicutshungulwa. Ungaqinisekisa ukuthi izithombe zokuqalisa azisethwanga ngokusebenzisa umyalo wokulungiselelwa kweseva ye-WDS okukhiphayo
wdsutil /get-server /show:images
Ngakho-ke, ku-SCCM 2012, awukwazi ukucacisa ifayela lakho ukuze lilande i-PXE kumhlinzeki we-SMSPXE. Ngakho-ke, sizomisa indawo esebenzayo yeseva ye-DHCP.
Kumapharamitha wendawo esebenzayo ye-DHCP, setha imingcele ngokusho kwepuleti
Inketho ye-DHCP
Igama lepharamitha
Okushoyo
066
Igama leseva yokuqalisa
sccm2012.test.local
067
Igama le-bootfile
smsbootx86pxelinux.com
006
Amaseva we-DNS
192.168.57.10
015
Igama lesizinda se-DNS
test.endaweni
Kwinketho ethi 066 sicacisa igama le-FQDN leseva ye-sccm, ekukhetheni okuthi 067 sicacisa indlela eya ku-x86 bootloader pxelinux.com kusukela empandeni ye-TFTP, kunketho ethi 006 sicacisa ikheli le-IP leseva ye-DNS. Uma igama leseva elifushane lisetshenziswa kunketho ethi 066, kunketho ethi 015 sicacisa isijobelelo se-DNS sesizinda.
Ukwengeza
Kuchaze ukucushwa kwe-DHCP ngemininingwane eyengeziwe . Kodwa kuqhubekeDCinketho 150, ikheli le-IP leseva ye-TFTP, belingekho kuzilungiselelo zobubanzi be-DHCP, futhi ukuchaza inketho 150 nge-netsh akusebenzanga.
3. Ukuhlola umsebenzi
Izilungiselelo eziyisisekelo ziqediwe futhi ungaqala ukuhlola. Sibonisa kukhompyutha yokuhlola ku-BIOS ukuthi ilayishwe kunethiwekhi futhi ilayishwa kumenyu
Khetha into Β«Start to SCCMΒ» futhi uma ukulandelana komsebenzi kunikezwe ikhompuyutha, emva kwesikhashana kuzovela iwindi elithi "Task Sequence Wizard" likutshela ukuthi ufake iphasiwedi.
Qalisa kabusha umshini, buyela emuva kumenyu, khetha kumenyu Β«Antivirus and toolsΒ» bese ufaka iphasiwedi Qwerty
Sikhetha into engafanele futhi sibheke ukulayishwa kwesithombe se-ISO enkumbulweni
Ukulinda nokubona umphumela
Ukuqinisekisa kuqediwe
4. Izilungiselelo nezici ezengeziwe
Ukusethwa komzila
Uma iklayenti, iseva ye-DHCP, neseva equkethe isilayishi senethiwekhi zikusegimenti yenethiwekhi efanayo, akukho ukulungiselelwa okwengeziwe okudingekayo. Kodwa-ke, uma iklayenti neseva ye-DHCP noma iseva ye-WDS/SCCM kukusegmenti ehlukene yenethiwekhi, kuyanconywa ukuthi ulungiselele amarutha akho ukuze adlulisele amaphakethe okusakaza ukusuka kuklayenti kuya kuseva esebenzayo ye-DHCP kanye neseva esebenzayo ye-WDS/SCCM. Ezincwadini zesiNgisi, le nqubo yaziwa ngele-"IP Helper table updates". Kulokhu, iklayenti, ngemva kokuthola ikheli le-IP, lithinta iseva equkethe isilayishi senethiwekhi ngokuqondile ngamaphakethe e-DHCP ukuze lilande isilayishi senethiwekhi.
Kumarutha eCisco, sebenzisa umyalo
ip helper-address {ip address}
kuphi {ip address} Iseva ye-DHCP noma ikheli leseva ye-WDS/SCCM. Lo myalo futhi uthumela amaphakethe okusakaza e-UDP alandelayo
Imbobo
Isivumelwano
69
I-TFTP
53
Uhlelo Lwesizinda Segama (DNS)
37
Isevisi yesikhathi
137
Iseva yegama le-NetBIOS
138
Iseva ye-NetBIOS Datagram
67
I-Bootstrap Protocol (BOOTP)
49
I-TACACS
Indlela yesibili yokuthi iklayenti lithole ulwazi mayelana nesilayishi senethiwekhi ngokuqondile kuseva ye-DHCP iwukucacisa izinketho 60,66,67 kuseva ye-DHCP. Ukusebenzisa inketho ye-DHCP engu-60 enenani Β«PXEClientΒ» kuzo zonke izikophu ze-DHCP, kuphela uma iseva ye-DHCP isingathwe kuseva efanayo ne-Windows Deployment Services. Kulokhu, iklayenti lixhumana ngokuqondile neseva ye-Windows Deployment Services isebenzisa i-TFTP kumbobo ye-UDP 4011 esikhundleni sokusebenzisa i-DHCP. Le ndlela ayinconywa yi-Microsoft ngenxa yezinkinga zokulinganisa umthwalo, ukuphathwa okungalungile kwezinketho ze-DHCP kanye nezinketho zokuphendula ze-Windows Deployment Services ohlangothini lweklayenti. Futhi futhi ngoba ukusebenzisa izinketho ezimbili kuphela ze-DHCP 66 no-67 kukuvumela ukuthi udlule imingcele esethwe kuseva yebhuthi yenethiwekhi.
Udinga futhi ukuvula izimbobo ze-UDP ezilandelayo kuseva ye-Windows Deployment Services
port 67 (DHCP)
port 69 (TFTP)
port 4011 (PXE)
kanye nembobo engu-68 uma ukugunyazwa kwe-DHCP kudingeka kuseva.
Ngemininingwane eyengeziwe, inqubo yokumisa kanye nama-nuances wokuqondisa kabusha phakathi kwamaseva e-WDS ahlukene achazwe ngezansi emithonjeni:
Ukuphathwa kohlelo lokuqalisa inethiwekhi
Ukuphathwa kweseva
I-Microsoft Product Support Services (PSS) isekela imingcele yokuqalisa inethiwekhi I-Microsoft Windows Preinstallation Environment (Windows PE) 2.0
Ungakudlulisa kanjani ukusakazwa kwe-UDP (BOOTP / DHCP) kuCisco
Izici zokusebenza nokucushwa kwe-DHCP kumarutha eCisco (Ingxenye 2)
Izinketho ezengeziwe zokulanda kwasendaweni
Endaweni yokuhlola, umyalo
localboot 0 inikeza iphutha elinjalo
Kulandela emibhalweni ye-syslinux ukuthi nini
localboot 0ukulayisha kuzosuka kudiski yendawo. Futhi uma ucacisa inani elithile le-0x00 kusuka ku-floppy disk eyinhloko (eyisisekelo), lapho ucacisa i-0x80 kusuka ku-hard disk eyinhloko (eyisisekelo). Ngokushintsha umyalo othi
localboot 0x80 i-OS yendawo ilayishiwe.
Uma kunesidingo sokuqalisa kusuka kudiski ethile, ukwahlukanisa noma umyalo localboot ayisebenzi, ungasebenzisa amakhono emojula chain.c32. Ngemva kokuyilayisha, sebenzisa umyalo we-append ukuze ucacise idiski ethile noma ukwahlukanisa kwediski, izinombolo zediski ziqala ku-0, izinombolo zokuhlukanisa ziqala ku-1. uma ukwahlukanisa 0 kucacisiwe, i-MBR iyalayishwa. Lapho ucacisa idiski, ukwahlukanisa kungashiywa.
KERNEL chain.c32
APPEND hd0 0noma
KERNEL chain.c32
APPEND hd0
Imithombo:
I-oda nencazelo yokulanda amafayela nge-PXE
Njengoba kushiwo ekuqaleni kwesihloko, uhla lwemibhalo lapho amafayela e-WDS atholakala ukuze alandwe luqukethwe inani lepharamitha. RootFolder egatsheni lokubhalisa HKEY_LOCAL_MACHINESYSTEMCurrentControlSetservicesWDSServerProvidersWDSTFTP
Inani elizenzakalelayo C:RemoteInstall
Lapha kupharamitha ReadFilter uhla lwemibhalo lucacisiwe lapho iseva ye-TFTP ibheka amafayela ukuze ilandwe, kusukela empandeni. Njengoba i-SCCM 2012 SP1 ifakiwe, lesi silungiselelo sinjalo
boot*
tmp*
SMSBoot*
SMSTemp*
SMSImages*
Uma ushintsha inani lepharamitha libe * bese wonke amafayela atholakala kuhla lwemibhalo azocutshungulwa RemoteInstall.
Iqhaza lephoyinti lokuphakela le-SCCM 2012 licaciswe kunani lokubhalisa ProvidersOrderetholakala egatsheni HKLMSystemCurrentControlSetWDSServerProvidersWDSPXE
Ipharamitha ProvidersOrder ingathatha amanani
I-SMSPXE
Indawo yesevisi ye-PXE ku-SCCM
I-SMS.PXE.Hlunga
Isiphathi seskripthi se-PXE esivela ku-MDT (I-Microsoft Deployment Toolkit)
I-BINLSVC
Injini ejwayelekile ye-WDS ne-RIS
Nge-SCCM efakiwe, ipharamitha ProvidersOrder izindaba SMSPXE. Ngokushintsha ipharamitha, ungashintsha indlela abahlinzeki abalayishwa ngayo.
Kukhathalogi RemoteInstall amafayela ajwayelekile alandelayo ayatholakala
wdsnbp.com
Uhlelo lwenethiwekhi yokuqalisa eyenzelwe i-Windows Deployment Services eyenza le misebenzi elandelayo:
1. Ukutholwa kwezakhiwo.
2. Ukugcinwa kwamakhompyutha alindile. Uma inqubomgomo yokungeza ngokuzenzakalela inikwe amandla, lolu hlelo lwenethiwekhi yokuqalisa luthunyelwa kumakhompyutha alindile ukuze amise okwesikhashana ukuqalisa kwenethiwekhi nokwazisa iseva ngezakhiwo zekhompuyutha yeklayenti.
3. Ukusebenzisa izixhumanisi zokuvula inethiwekhi (okuhlanganisa ukusebenzisa izinketho ze-DHCP 66 kanye no-67)
PXEboot.com
(Okuzenzakalelayo) Idinga umsebenzisi ukuthi acindezele ukhiye we-F12 ukuze aqhubeke nokuqalisa inethiwekhi
I-PXEboot.n12
Ayidingi ukuthi umsebenzisi acindezele ukhiye we-F12 futhi iqale ukubhutha kwenethiwekhi ngokushesha
I-AbortPXE.com
Ivula ikhompuyutha isebenzisa into elandelayo yokuqalisa ku-BIOS ngaphandle kokulinda
I-Bootmgr.exe
I-Windows Boot Manager (Bootmgr.exe noma i-Bootmgr.efi). Ilayisha i-bootloader ye-Windows isebenzisa i-firmware evela esahlulelweni esithile sediski noma ngoxhumano lwenethiwekhi (uma kuqalwa inethiwekhi)
I-Bootmgfw.efi
Inguqulo ye-EFI ye-PXEboot.com ne-PXEboot.n12 (ku-EFI, ukukhetha ukuqalisa noma ukungavuli i-PXE kukugobolondo le-EFI, hhayi uhlelo lokuqalisa inethiwekhi). I-Bootmgfw.efi ihlanganisa amandla e-PXEboot.com, PXEboot.n12, abortpxe.com, kanye ne-bootmgr.exe. Okwamanje ikhona kuphela kuma-architectures we-x64 kanye ne-Itanium.
Okuzenzakalelayo.bcd
Isitolo Sedatha Yokucushwa Kwe-Boot (BCD), ifomethi ye-REGF, ingalayishwa ku-REGEDIT, ingene esikhundleni sefayela lombhalo le-Boot.ini
Ukulayisha kwenzeka ngohlelo olulandelayo njengoba kuchazwe ngenhla
1. Layisha i-wdsnbp.com.
2. Okulandelayo, i-pxeboot.com yezakhiwo ezifanele iyalayishwa
3. I-PXEBoot.com ilanda i-bootmgr.exe kanye nesitolo sedatha yokucushwa kwe-BCD yokuqalisa
4. I-Bootmgr.exe ifunda okufakiwe kwesistimu yokusebenza kwedatha yokuqalisa ye-BCD bese ilayisha ifayela le-Boot.sdi kanye nesithombe se-Windows PE (boot.wim)
5. I-Bootmgr.exe iqala ukulayisha i-Windows PE ngokufinyelela i-Winload.exe esithombeni se-Windows PE
Uma ku RemoteInstall kukhona amafolda
Boot
Images
Mgmt
Templates
Tmp
WdsClientUnattend ukuba khona kwabo kusho ukuthi ngaphambi kokwengeza indima yephoyinti lokusabalalisa ku-SCCM 2012 (izindawo zesevisi ye-PXE ku-SCCM 2007), kube khona isenzo esithile sokumisa ku-Windows Deployment Services (WDS) efakwe ngokuzenzakalelayo lawa mafolda.
Ngendima yephoyinti lokusabalalisa (iphoyinti lesevisi ye-PXE ku-SCCM 2007), amafolda alandelayo kuphela anele
SMSBoot
SMSIMAGES
SMSTemp
StoresLokhu akusho ukuthi i-SCCM ifakwe ngokungalungile, kodwa ingakhomba umthombo wamaphutha okungenzeka.
Isixazululo sezinkinga ezahlukahlukene zenqwaba ye-WDS, SCCM kanye ne-PXE kuxoxwa ngayo ngokuningiliziwe esihlokweni.
Umphumela
Ingqalasizinda ye-IT ephethwe yi-System Center Configuration Manager yengeze ithuluzi elisha labalawuli besistimu yenkambu.
Uhlu lwezixhumanisi zezithombe ze-ISO (Chofoza ukuze ubonise)
Π‘ΠΏΠ°ΡΠΈΠ±ΠΎ Π·Π° Π²Π½ΠΈΠΌΠ°Π½ΠΈΠ΅!
Source: www.habr.com