Masiku angapo apitawo kutulutsidwa kwa mtundu watsopano wa projekiti ya Chrony 4.2, zomwe imapereka kukhazikitsa kodziyimira pawokha kwa kasitomala wa NTP ndi seva yomwe imagwiritsidwa ntchito kulumikiza nthawi yeniyeni pamagawidwe osiyanasiyana a Linux, kuphatikiza Fedora, Ubuntu, SUSE / openSUSE, ndi RHEL / CentOS.
Pulogalamuyo imathandizira mafotokozedwe a NTPv4 (RFC 5905) ndi NTS (Network Time Security) protocol, yomwe imagwiritsa ntchito Public Key Infrastructure Elements (PKI) ndipo imathandiza kugwiritsa ntchito TLS ndi Authenticated Encryption with Associated Data (AEAD) pofuna kuteteza nthawi ndi kugwirizanitsa .
Zotsatira
Za Chrony 4.2
Kuti mudziwe nthawi yeniyeni, ma seva onse akunja a NTP ndi mawotchi ofotokozera angagwiritsidwe ntchito, mwachitsanzo, kutengera olandila GPS, mukamagwiritsa ntchito kulondola komwe kungatheke pamlingo wa tizigawo ta microsecond.
Ntchitoyi idapangidwa poyambirira kuti igwire ntchito bwino m'malo osakhazikika, kuphatikiza maukonde osadalirika okhala ndi maulumikizidwe osalumikizidwa, kuchedwa kwambiri komanso kutayika kwa paketi, kugwira ntchito pamakina owoneka bwino, ndi machitidwe omwe ali ndi kutentha kosiyanasiyana (kutentha kumakhudza magwiridwe antchito a wotchi ya hardware).
Kulondola kwenikweni pakati pa makina awiri olumikizidwa pa intaneti ndi ma milliseconds ochepa; pa LAN, kulondola kwake kumakhala ma microseconds makumi khumi. Ndi chidindo chanthawi ya hardware kapena wotchi yolozera pa hardware, kulondola kwa ma microseconds ocheperako kungakhale kotheka.
Mapulogalamu awiri akuphatikizidwa mu chrony, chronyd ndi daemon yomwe ingayambike panthawi ya boot, ndipo chronyc ndi pulogalamu yowonetsera mzere wa malamulo yomwe ingagwiritsidwe ntchito kuyang'anira chrony kuti igwire ntchito ndikusintha magawo osiyanasiyana ogwiritsira ntchito pamene ikuyenda.
Zatsopano zatsopano za Chrony 4.2
Mu mtundu watsopano wa Chrony 4.2 anawonjezera kuyesera thandizo kwa gawo lomwe limakulitsa kuthekera kwa protocol NTPv4 ndipo amagwiritsidwa ntchito kupititsa patsogolo kukhazikika kwa nthawi, komanso kuchepetsa kuchedwa ndi kufalikira kwa mtengo.
Zimatchulidwanso polengeza kuti adawonjezera chithandizo choyesera kutumiza kwa NTP za Precision Time Protocol (PTP).
Komanso mumayendedwe ophatikizika a seva izi zasinthidwa kuti zithandizire kudalirika, kuphatikiza pakuwonjezera ziwerengero zophatikizika ku lipoti la ziwerengero za seva.
Kukhazikitsa kwa NTS imawonjezera chithandizo cha AES-CMAC encryption algorithm ndi kuthekera kogwiritsa ntchito ma hashi a GnuTLS.
Chachilendo china chomwe chimadziwika bwino ndi kuyanjana ndi malo opangira a Solaris, monga mu mtundu watsopanowu wamasuliridwa ngati kalozera wa pulojekiti ya Illumos, yomwe ikupitiliza kusinthira kernel, network stack, mafayilo amafayilo, madalaivala, malaibulale, ndi zida zoyambira za OpenSolaris system. Kwa Illumos, idakhazikitsa kuyimitsa mawotchi a kernel.
Mwa kusintha kwina zomwe zikuwonekera mu mtundu watsopanowu:
- Thandizo lokwezeka lamakasitomala angapo kumbuyo kwa womasulira adilesi imodzi (NAT).
- Zosefera zoyimba kachitidwe zosinthidwa kutengera makina a seccomp.
Mapeto, ngati mukufuna kudziwa zambiri za izo za mtundu watsopano wa Chrony 4.2 mutha kuwona zambiri Mu ulalo wotsatira.
Momwe mungayikitsire Chrony 4.2 pa Linux?
Kwa iwo omwe ali ndi chidwi chotha kukhazikitsa chida ichi pamakina awo, atha kutero potsatira malangizo omwe timagawana pansipa.
Ngati ndinu wogwiritsa ntchito Debian, Ubuntu kapena chotengera chilichonse mwa izi, mutha kukhazikitsa potsegula terminal ndikulembamo lamulo ili:
sudo apt install chrony
Tsopano ngati ndinu wogwiritsa ntchito CentOS, RHEL kapena kugawa kulikonse komwe kumachokera pa izi, lamulo loti mugwiritse ntchito ndi ili:
sudo yum -y install chrony
Kwa omwe ali ogwiritsa ntchito Fedora, zofunikira zitha kukhazikitsidwa polemba:
sudo dnf -y install chrony
Pomwe kwa iwo omwe amagwiritsa ntchito Arch Linux, Manjaro, Arco Linux kapena kugawa kwina kulikonse kutengera Arch Linux, akhoza kukhazikitsa ndi:
sudo pacman -S chrony
Khalani oyamba kuyankha