{"id":79249,"date":"2020-04-25T19:42:10","date_gmt":"2020-04-25T17:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/chto-novogo-v-ubuntu-20-04"},"modified":"2020-04-25T19:42:10","modified_gmt":"2020-04-25T17:42:10","slug":"chto-novogo-v-ubuntu-20-04","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/administrirovanie\/chto-novogo-v-ubuntu-20-04","title":{"rendered":"Mis on uut Ubuntu 20.04-s?","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Mis on uut Ubuntu 20.04-s?\" src=\"\/wp-content\/uploads\/2020\/04\/e315f7ccdb370c7afdd5d9d0357ce10f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n23. aprill <noindex><a rel=\"nofollow\" href=\"https:\/\/releases.ubuntu.com\/20.04\/\">toimus<\/a><\/noindex> Ubuntu 20.04 v\u00e4ljaande, mille koodnimi on Focal Fossa, on j\u00e4rgmine versioon Ubuntu-st pikaajalise toe (LTS) jaoks ja j\u00e4rgneb Ubuntu 18.04 LTS-le, mis ilmus 2018. aastal.<\/p>\n<p>Veidi koodnime kohta. S\u00f5na \"Focal\" t\u00e4hendab \"keskpunkt\" v\u00f5i \"k\u00f5ige olulisem osa\", seega on see seotud keskuse m\u00f5istmisega, teatud omaduste, n\u00e4htuste, s\u00fcndmuste keskpunktiga, samas kui \"Fossa\" on tuletatud s\u00f5nast \"FOSS\" (Free and Open-Source Software \u2014 vabavaraline ja avatud l\u00e4htekoodiga tarkvara) ning vastavalt Ubuntu versiooni nimede traditsioonile loomade nimedel t\u00e4hendab see <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A4%D0%BE%D1%81%D1%81%D0%B0\">Fossa<\/a><\/noindex> \u2014 suurim kiskja Madasgari saare mangustide sugukonnast.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<blockquote><p><b>Arendajad positsioneerivad Ubuntu 20.04 kui olulise ja eduka uuenduse, mis pakub tuge j\u00e4rgmise 5 aasta jooksul nii lauaarvutitele kui ka serveritele.<\/b><\/p><\/blockquote>\n<p>Ubuntu 20.04 on loogiline j\u00e4tk Ubuntu 19.04-le \"Disco Dingo\" ja Ubuntu 19.10-le \"Eoan Ermine\". Lauaarvutiversioonides, j\u00e4rgides viimasid suundi, on saadaval tume teema. Seega on Ubuntu 20.04-s kolm standardset Yaru teema varianti:<\/p>\n<ul>\n<li>Heledat,<\/li>\n<li>Tumeda,<\/li>\n<li>Standard.<\/li>\n<\/ul>\n<p>\nSamuti eemaldati Amazoni rakendus. Ubuntu 20.04 kasutab vaikimisi graafilise liidesena viimast versiooni. <noindex><a rel=\"nofollow\" href=\"https:\/\/itsfoss.com\/gnome-3-36-release\/\">GNOME 3.36<\/a><\/noindex>.<\/p>\n<p><img decoding=\"async\" alt=\"Mis on uut Ubuntu 20.04-s?\" src=\"\/wp-content\/uploads\/2020\/04\/9b22ae9782de374acf7c7579c500e5fd.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h2>Peamised muudatused<\/h2>\n<p>\nUbuntu 20.04 p\u00f5hineb 5.4 tuumaval, mis ilmus 24. novembril 2019. Selles versioonis on mitmeid olulisi uuendusi, millest r\u00e4\u00e4gime allpool.<\/p>\n<h3>lz4<\/h3>\n<p>\nCanonicali insenerid testisid erinevaid kokkusurumismeetodeid tuumas ja alglaadimisbilansis initramfs, p\u00fc\u00fcdes leida kompromissi parima tihendamise (v\u00e4iksema faili suuruse) ja lahtipakkimise aja vahel. Kaotusteta kokkusurumisalgoritm lz4 n\u00e4itas k\u00f5ige m\u00e4rgatavamaid tulemusi ja lisati Ubuntu 19.10, v\u00f5imaldades tal laadimisaega v\u00f5rreldes varasemate v\u00e4ljaannetega (Ubuntu 18.04 ja 19.04) v\u00e4hendada. See sama algoritm p\u00fcsib ka Ubuntu 20.04-s.<\/p>\n<h3>Linux Lockdown Kernel<\/h3>\n<p>\nLockdown funktsioon suurendab Linuxi tuuma turvalisust, piirates juurdep\u00e4\u00e4su funktsioonidele, mis v\u00f5ivad lubada juhusliku koodi t\u00e4itmist kasutaja protsesside kaudu esitatud koodi abil. Lihtsamalt \u00f6eldes ei saa isegi superkasutaja konto root tuuma koodi muuta. See aitab v\u00e4hendada v\u00f5imaliku r\u00fcnnaku p\u00f5hjustatud kahju, isegi kui root-konto on kompromiteeritud. Seel\u00e4bi t\u00f5useb ka kogu operatsioonis\u00fcsteemi turvalisus.<\/p>\n<h3>exFAT<\/h3>\n<p>\nMicrosofti FAT failis\u00fcsteem ei luba faile, mille suurus \u00fcletab 4 GB. Selle piirangu \u00fcletamiseks l\u00f5i Microsoft failis\u00fcsteemi exFAT (Extended FAT \u2014 \"laiendatud FAT\"). N\u00fc\u00fcd saate n\u00e4iteks vormindada USB-m\u00e4lupulga exFAT-ks, kasutades <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=c48c9f7ff32b8b3965a08e40eb6763682d905b5d\">integreeritud tuge<\/a><\/noindex> failis\u00fcsteemile exFAT.<\/p>\n<h3>WireGuard<\/h3>\n<p>\nKuigi Ubuntu 20.04 ei kasuta kohe tuuma 5.6, on tal juba praegu tuuma 5.4-s WireGuardi tagasivool. WireGuard on <noindex><a rel=\"nofollow\" href=\"https:\/\/itsfoss.com\/wireguard\/\">uus s\u00f5na VPN-industri<\/a><\/noindex>, seega toomine <noindex><a rel=\"nofollow\" href=\"https:\/\/www.wireguard.com\/\">WireGuard<\/a><\/noindex> tuuma juba praegu annab Ubuntu 20.04-le eelise pilveteenustes.<\/p>\n<p>Parandatud <noindex><a rel=\"nofollow\" href=\"https:\/\/www.phoronix.com\/scan.php?page=news_item&amp;px=High-Threads-CFS-Quota-Fix\">CFS-i kvotiga seotud t\u00f5rge<\/a><\/noindex> ja n\u00fc\u00fcd saavad mitme j\u00e4lgimisega rakendused t\u00f6\u00f6tada kiiremini. Lisatud on draiver, mis v\u00f5imaldab t\u00f6\u00f6tada Ryzen seeria protsessorite temperatuuri ja pingetunduritega.<\/p>\n<p>Kaugeltki mitte k\u00f5ik uuendused, mis on kerge 5.4 sisse viidud. \u00dcksikasjalike \u00fclevaadetega saab tutvuda lehelt <noindex><a rel=\"nofollow\" href=\"https:\/\/kernelnewbies.org\/Linux_5.4\">kernelnewbies.org<\/a><\/noindex> (inglise keeles) ja foorumis <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51881\">OpenNET<\/a><\/noindex> (vene keeles).<\/p>\n<h3>Kubernetes'i kasutamine<\/h3>\n<p>\nCanonical t\u00f5i Ubuntu 20.04-sse t\u00e4ieliku toe <noindex><a rel=\"nofollow\" href=\"https:\/\/ubuntu.com\/blog\/kubernetes-1-18-available-from-canonical\">Kubernetes 1.18<\/a><\/noindex> toega <noindex><a rel=\"nofollow\" href=\"https:\/\/ubuntu.com\/kubernetes\/features\">Charmed Kubernetes<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/microk8s.io\/\">MicroK8s<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/ubuntu.com\/blog\/canonical-widens-kubernetes-support-with-kubeadm\">kubeadm'ile.<\/a><\/noindex>.<\/p>\n<p>Kubectl installimine Ubuntu 20.04-s:<\/p>\n<pre><code class=\"plaintext\"># snap install kubectl --classic\n\nkubectl 1.18.0 from Canonical \u2713 installed<\/code><\/pre>\n<p><\/p>\n<h3>Kasutades SNAP<\/h3>\n<p>\nCanonical j\u00e4tkab universaalse pakendi formaadi \u2014 snap \u2014 edendamist. See on veelgi ilmsem Ubuntu 20.04 v\u00e4ljaandes. Kui proovite k\u00e4ivitada programmi, mida pole installitud, pakutakse selle esmalt installida j\u00e4rgmistest:<\/p>\n<pre><code class=\"plaintext\"># snap install &lt;package&gt;<\/code><\/pre>\n<p>\n<img decoding=\"async\" alt=\"Mis on uut Ubuntu 20.04-s?\" src=\"\/wp-content\/uploads\/2020\/04\/d9d5b34233f7b267e85fd83ca96a9544.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<h3>T\u00f5hustatud ZFS toetus<\/h3>\n<p>\nKuigi <noindex><a rel=\"nofollow\" href=\"https:\/\/www.realworldtech.com\/forum\/?threadid=189711&amp;curpostid=189841\">Linus Torvaldsi jaoks ei pruugi ZFS meeldida<\/a><\/noindex>, j\u00e4\u00e4b see siiski populaarseks failis\u00fcsteemiks ja selle eksperimentaalsed toed lisati Ubuntu 19.10.<br \/>\nSee on piisavalt mugav ja stabiilne andmete salvestamiseks, olgu selleks koduarhiiv v\u00f5i t\u00f6\u00f6serveri salvestada (\"karbist v\u00e4lja\" oskab see rohkem kui n\u00e4iteks LVM). ZFS toetab sektsioonide suurusi kuni 256 kvadriljoni zettabaidi (seet\u00f5ttu ongi Z-t\u00e4hega nimi) ja suudab hallata faile, mis on kuni 16 eksabaiti suured.<\/p>\n<p>ZFS teostab andmete terviklikkuse kontrolli, arvestades seda, kuidas need kettale paigutatud on. Kirjutamise ajal kopeerimise funktsioon tagab, et kasutatud andmeid ei kirjutata \u00fcle. Uus teave kirjutatakse uude plokki ja failis\u00fcsteemi metaandmed uuendatakse, et viidata sellele. ZFS v\u00f5imaldab luua hetkeke, mis j\u00e4lgivad tehtud muudatusi failis\u00fcsteemis ja vahetavad selle andmetega, et s\u00e4\u00e4sta kettaruumi.<\/p>\n<p>ZFS m\u00e4\u00e4rab iga faili kontrollsummad kettale ja kontrollib pidevalt selle olekut. Kui see leiab, et fail on rikutud, p\u00fc\u00fcab see automaatselt taastada. Ubuntu installi programmis on ilmunud eraldi punkt, mis v\u00f5imaldab kasutada ZFS-i. ZFS-i ajaloo ja selle omadustega saate l\u00e4hemalt tutvuda blogis. <noindex><a rel=\"nofollow\" href=\"https:\/\/itsfoss.com\/what-is-zfs\/\">See on FOSS<\/a><\/noindex>.<\/p>\n<h3>Head aega Python 2.X<\/h3>\n<p>\nPythoni kolmas versioon esitati juba 2008. aastal, kuid isegi 12 aastat ei osutunud piisavaks, et Python 2 projektid sellele kohandatud oleksid.<br \/>\nJuba Ubuntu 15.10-s tehti katse loobuda Python 2-st, kuid selle tugi j\u00e4tkus. Ja n\u00fc\u00fcd, 20. aprillil 2020 ilmus <noindex><a rel=\"nofollow\" href=\"https:\/\/www.python.org\/downloads\/release\/python-2718\/\">Python 2.7.18<\/a><\/noindex>, mis on viimase v\u00e4ljaande Python 2 harust. Uuendusi selle jaoks enam ei tule.<\/p>\n<p>Ubuntu 20.04 ei toeta enam Python 2 ja kasutab Python 3.8 vaikimisi Pythoni versioonina. Kahjuks on maailmas veel palju projekte, mis t\u00f6\u00f6tavad Python 2 peal, ja nende \u00fcleminek Ubuntu 20.04-le v\u00f5ib osutuda valulikuks.<\/p>\n<p>Viimast Python 2 versiooni saate installida \u00fche k\u00e4suga:<\/p>\n<pre><code class=\"plaintext\"># apt install python2.7<\/code><\/pre>\n<p>\nPeale Python 3.8 saavad arendajad hinnata uuendatud t\u00f6\u00f6riistade komplekti, mis sisaldab:<\/p>\n<ul>\n<li>MySQL 8,<\/li>\n<li>glibc 2.31,<\/li>\n<li>OpenJDK 11,<\/li>\n<li>PHP 7.4,<\/li>\n<li>Perl 5.30,<\/li>\n<li>Golang 1.14.<\/li>\n<\/ul>\n<p><\/p>\n<h3>H\u00fcvasti 32 bitti<\/h3>\n<p>\nUbuntu ei paku juba mitu aastat 32-bitistele arvutitele ISO-berzi. Praegused Ubuntu 32-bitiste versioonide kasutajad saavad \u00fcle minna Ubuntu 18.04-le, kuid Ubuntu 20.04-le uuendamine pole enam v\u00f5imalik. Kui kasutate praegu 32-bitist Ubuntu 18.04, saate sellega j\u00e4tkata kuni aprillini 2023.<\/p>\n<h2>Kuidas uuendada<\/h2>\n<p>\nUbuntu 20.04-le uuendamine eelnevatest versioonidest on lihtne \u2014 piisab j\u00e4rgmistest k\u00e4skudest:<\/p>\n<pre><code class=\"plaintext\"># sudo apt update &amp;&amp; sudo apt upgrade\n# sudo do-release-upgrade<\/code><\/pre>\n<p><\/p>\n<blockquote><p>Meil on hea meel teatada, et Ubuntu 20.04 LTS (Focal Fossa) on juba saadaval meie <noindex><a rel=\"nofollow\" href=\"http:\/\/slc.tl\/-287K\">Pilveplatvormil<\/a><\/noindex>. Looge oma virtuaalne IT-infrastruktuur, kasutades uusimat tarkvara!<\/p><\/blockquote>\n<p>\n<b>UPD:<\/b> Ubuntu 19.10 kasutajad saavad uuendada 20.04-le juba n\u00fc\u00fcd, samas kui Ubuntu 18.04 kasutajad saavad uuendada p\u00e4rast 20.04.1 v\u00e4ljalaskmist, mille kuup\u00e4ev on planeeritud 23. juuliks 2020.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/company\/selectel\/blog\/498526\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>23 \u0430\u043f\u0440\u0435\u043b\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 Ubuntu \u0432\u0435\u0440\u0441\u0438\u0438 20.04 \u0441 \u043a\u043e\u0434\u043e\u0432\u044b\u043c \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435\u043c Focal Fossa, \u044f\u0432\u043b\u044f\u044e\u0449\u0438\u043c\u0441\u044f \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u043c \u0432\u044b\u043f\u0443\u0441\u043a\u043e\u043c Ubuntu \u0434\u043b\u044f \u0434\u043e\u043b\u0433\u043e\u0441\u0440\u043e\u0447\u043d\u043e\u0439 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 (LTS) \u0438 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435\u043c Ubuntu 18.04 LTS, \u0432\u044b\u043f\u0443\u0449\u0435\u043d\u043d\u043e\u0439 \u0432 2018 \u0433\u043e\u0434\u0443. \u041d\u0435\u043c\u043d\u043e\u0433\u043e \u043f\u0440\u043e \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f. \u0421\u043b\u043e\u0432\u043e \u00abFocal\u00bb \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u00ab\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u044c\u043d\u0430\u044f \u0442\u043e\u0447\u043a\u0430\u00bb \u0438\u043b\u0438 \u00ab\u0441\u0430\u043c\u0430\u044f \u0432\u0430\u0436\u043d\u0430\u044f \u0447\u0430\u0441\u0442\u044c\u00bb, \u0442\u043e \u0435\u0441\u0442\u044c \u0441\u0432\u044f\u0437\u0430\u043d\u043e \u0441 \u043f\u043e\u043d\u044f\u0442\u0438\u0435\u043c \u0441\u0440\u0435\u0434\u043e\u0442\u043e\u0447\u0438\u044f, \u0446\u0435\u043d\u0442\u0440\u043e\u043c \u043a\u0430\u043a\u0438\u0445-\u043b\u0438\u0431\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432, \u044f\u0432\u043b\u0435\u043d\u0438\u0439, \u0441\u043e\u0431\u044b\u0442\u0438\u0439, \u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":79250,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-79249","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"23 \u0430\u043f\u0440\u0435\u043b\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f 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