{"id":35652,"date":"2019-10-31T22:05:33","date_gmt":"2019-10-31T19:05:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/rasshifrovka-luks-kontejnera-v-moment-zagruzki-sistemy\/"},"modified":"2019-10-31T22:05:33","modified_gmt":"2019-10-31T19:05:33","slug":"rasshifrovka-luks-kontejnera-v-moment-zagruzki-sistemy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/administrirovanie\/rasshifrovka-luks-kontejnera-v-moment-zagruzki-sistemy","title":{"rendered":"A LUKS kont\u00e9ner dek\u00f3dol\u00e1sa a rendszer ind\u00edt\u00e1sakor.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Mindenkinek j\u00f3 napot \u00e9s j\u00f3 est\u00e9t! Ez a bejegyz\u00e9s hasznos lesz azoknak, akik LUKS adat titkos\u00edt\u00e1st haszn\u00e1lnak, \u00e9s diskek dekripkel\u00e9s\u00e9t szeretn\u00e9k v\u00e9gezni Linuxon (Debian, Ubuntu) a <b>root part\u00edci\u00f3 dekripkel\u00e9se sor\u00e1n.<\/b>Ilyen inform\u00e1ci\u00f3t az interneten nem tudtam tal\u00e1lni.<\/p>\n<p>Nemr\u00e9giben, a polcokon tal\u00e1lhat\u00f3 lemezek sz\u00e1m\u00e1nak n\u00f6veked\u00e9s\u00e9vel, szembes\u00fcltem azzal a probl\u00e9m\u00e1val, hogy diskek dekripkel\u00e9se t\u00fals\u00e1gosan is ismert m\u00f3dszerrel t\u00f6rt\u00e9nik az \/etc\/crypttab f\u00e1jl seg\u00edts\u00e9g\u00e9vel. Szem\u00e9ly szerint t\u00f6bb probl\u00e9m\u00e1t emeln\u00e9k ki e m\u00f3dszer haszn\u00e1lat\u00e1val kapcsolatban, nevezetesen, hogy a f\u00e1jl csak <b>a root part\u00edci\u00f3 bet\u00f6lt\u00e9se (mount) ut\u00e1n olvashat\u00f3,<\/b>ami kedvez\u0151tlen hat\u00e1ssal van a ZFS import\u00e1l\u00e1s\u00e1ra, k\u00fcl\u00f6n\u00f6sen, ha az *_crypt eszk\u00f6z\u00f6k part\u00edci\u00f3ib\u00f3l, vagy mdadm t\u00f6mb\u00f6kb\u0151l \u00e1lltak \u00f6ssze, amelyeket szint\u00e9n part\u00edci\u00f3kb\u00f3l alak\u00edtottak ki. <i>Mindenki tudja, hogy a LUKS tart\u00e1lyokon haszn\u00e1lhat\u00f3k a parted parancsok?<\/i> Illetve van egy m\u00e1sik probl\u00e9ma is, amikor m\u00e1s szolg\u00e1ltat\u00e1sok korai ind\u00edt\u00e1sa t\u00f6rt\u00e9nik, amikor m\u00e9g nincsenek t\u00f6mb\u00f6k, de <b>haszn\u00e1lni<\/b> m\u00e1r sz\u00fcks\u00e9g van valamire (a Proxmox VE 5.x \u00e9s ZFS over iSCSI klaszterrel dolgozom).<\/p>\n<p><b class=\"spoiler_title\">Egy kicsit a ZFS over iSCSI-r\u00f3l.<\/b>Az iSCSI n\u00e1lam az LIO-n kereszt\u00fcl m\u0171k\u00f6dik, \u00e9s amikor az iscsi c\u00e9lpont elindul, \u00e9s nem l\u00e1tja a ZVOL eszk\u00f6z\u00f6ket, egyszer\u0171en elt\u00e1vol\u00edtja \u0151ket a konfigur\u00e1ci\u00f3b\u00f3l, ami megakad\u00e1lyozza a vend\u00e9g rendszerek ind\u00edt\u00e1s\u00e1t. Innent\u0151l kezdve csak vagy a json f\u00e1jl biztons\u00e1gi ment\u00e9s\u00e9nek helyre\u00e1ll\u00edt\u00e1sa, vagy a VM-ek azonos\u00edt\u00f3ival rendelkez\u0151 eszk\u00f6z\u00f6k manu\u00e1lis hozz\u00e1ad\u00e1sa marad, ami r\u00e9mes, amikor ilyen g\u00e9pekb\u0151l tucatnyi van, \u00e9s minden konfigur\u00e1ci\u00f3ban t\u00f6bb mint egy disk tal\u00e1lhat\u00f3.<\/p>\n<p>A m\u00e1sodik k\u00e9rd\u00e9s, amelyet meg fogok vizsg\u00e1lni, az, hogy mivel v\u00e9gezz\u00fck a dekripkel\u00e9st (ez a cikk kulcsfontoss\u00e1g\u00fa pontja). Err\u0151l al\u00e1bb fogunk besz\u00e9lni, tarts vel\u00fcnk!<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\nLeggyakrabban az interneten kulcsf\u00e1jlt haszn\u00e1lnak (amelyet term\u00e9szetesen el\u0151z\u0151leg a cryptsetup luksAddKey parancs seg\u00edts\u00e9g\u00e9vel a hely\u00e9re kellett tenni), vagy ritka kiv\u00e9telekben (a magyar nyelv\u0171 interneten nagyon szeg\u00e9nyes az inform\u00e1ci\u00f3) \u2013 a decrypt_derived szkriptet, amely a \/lib\/cryptsetup\/script\/ mapp\u00e1ban tal\u00e1lhat\u00f3 (term\u00e9szetesen vannak m\u00e1s m\u00f3dszerek is, de \u00e9n pontosan ezeket a kett\u0151t haszn\u00e1ltam, ami a cikk alapj\u00e1t k\u00e9pezi). Emellett t\u00f6rekedtem a teljes auton\u00f3m ind\u00edt\u00e1sra a rendszer \u00fajraindul\u00e1sa ut\u00e1n, b\u00e1rmilyen tov\u00e1bbi konzolos parancs n\u00e9lk\u00fcl, hogy minden azonnal \"futni tudjon\". Sz\u00f3val, mi\u00e9rt v\u00e1rjunk? \u2013 <\/p>\n<p>Kezdj\u00fcnk hozz\u00e1!<\/p>\n<p>Tegy\u00fck fel, hogy egy Debian rendszer van telep\u00edtve a crypto-part\u00edci\u00f3n, az sda3_crypt-en, \u00e9s van egy tucat lemez\u00fcnk, amelyek k\u00e9szen \u00e1llnak a titkos\u00edt\u00e1sra, \u00e9s b\u00e1rmire, amire csak sz\u00fcks\u00e9g van. Van egy kulcskifejez\u00e9s\u00fcnk (passphrase) az sda3_crypt felold\u00e1s\u00e1hoz, \u00e9s pontosan err\u0151l a part\u00edci\u00f3r\u00f3l fogunk a fut\u00f3 (dek\u00f3dolt) rendszeren \u201ehash\u201d-t k\u00e9sz\u00edteni a jelsz\u00f3r\u00f3l, \u00e9s hozz\u00e1adni a t\u00f6bbi lemezhez. Minden egyszer\u0171, a konzolba \u00edrjuk:<\/p>\n<pre><code class=\"plaintext\">\/lib\/cryptsetup\/scripts\/decrypt_derived sda3_crypt | cryptsetup luksFormat \/dev\/sdX<\/code><\/pre>\n<p>\nahol az X \u2014 a lemezeink, part\u00edci\u00f3ink stb.<\/p>\n<p>A lemezek \u201ehash\u201d-el\u00e9s\u00e9vel a kulcskifejez\u00e9s\u00fcnkt\u0151l most meg kell tudnunk az UUID-t vagy az ID-t - att\u00f3l f\u00fcgg, ki mit r\u00e9szes\u00edt el\u0151nyben. Az adatokat az \/dev\/disk\/by-uuid \u00e9s by-id k\u00f6nyvt\u00e1rakb\u00f3l vessz\u00fck.<\/p>\n<p>A k\u00f6vetkez\u0151 l\u00e9p\u00e9s a sz\u00fcks\u00e9ges funkci\u00f3k m\u0171k\u00f6d\u00e9s\u00e9hez sz\u00fcks\u00e9ges f\u00e1jlok \u00e9s mini-scriptek el\u0151k\u00e9sz\u00edt\u00e9se, kezdj\u00fck el:<\/p>\n<pre><code class=\"plaintext\">cp -p \/usr\/share\/initramfs-tools\/hooks\/cryptroot \/etc\/initramfs-tools\/hooks\/\ncp -p \/usr\/share\/initramfs-tools\/scripts\/local-top\/cryptroot \/etc\/initramfs-tools\/scripts\/local-top\/<\/code><\/pre>\n<p>\ntov\u00e1bb<\/p>\n<pre><code class=\"plaintext\">touch \/etc\/initramfs-tools\/hooks\/decrypt &amp;&amp; chmod +x \/etc\/initramfs-tools\/hooks\/decrypt<\/code><\/pre>\n<p>\n<b class=\"spoiler_title\">A tartalom .. \/decrypt<\/b><\/p>\n<pre><code class=\"bash\">#!\/bin\/sh\n\ncp -p \/lib\/cryptsetup\/scripts\/decrypt_derived \"$DESTDIR\/bin\/decrypt_derived\"<\/code><\/pre>\n<p>tov\u00e1bb<\/p>\n<pre><code class=\"plaintext\">touch \/etc\/initramfs-tools\/hooks\/partcopy &amp;&amp; chmod +x \/etc\/initramfs-tools\/hooks\/partcopy<\/code><\/pre>\n<p>\n<b class=\"spoiler_title\">A tartalom .. \/partcopy<\/b><\/p>\n<pre><code class=\"bash\">#!\/bin\/sh\n\ncp -p \/sbin\/partprobe \"$DESTDIR\/bin\/partprobe\"\ncp -p \/lib\/x86_64-linux-gnu\/libparted.so.2 \"$DESTDIR\/lib\/x86_64-linux-gnu\/libparted.so.2\"\ncp -p \/lib\/x86_64-linux-gnu\/libreadline.so.7 \"$DESTDIR\/lib\/x86_64-linux-gnu\/libreadline.so.7\"<\/code><\/pre>\n<p>m\u00e9g egy kicsit<\/p>\n<pre><code class=\"plaintext\">touch \/etc\/initramfs-tools\/scripts\/local-bottom\/partprobe &amp;&amp; chmod +x \/etc\/initramfs-tools\/scripts\/local-bottom\/partprobe<\/code><\/pre>\n<p>\n<b class=\"spoiler_title\">A tartalom .. \/partprobe<\/b><\/p>\n<pre><code class=\"bash\">#!\/bin\/sh\n\n$DESTDIR\/bin\/partprobe<\/code><\/pre>\n<p>\u00e9s v\u00e9g\u00fcl, az update-initramfs el\u0151tt szerkeszten\u00fcnk kell a f\u00e1jlt \/etc\/initramfs-tools\/scripts\/local-top\/cryptroot, a ~360. sor k\u00f6rny\u00e9k\u00e9n, l\u00e1sd az al\u00e1bbi k\u00f3dr\u00e9szletet<\/p>\n<p><b class=\"spoiler_title\">Eredeti<\/b><\/p>\n<pre><code class=\"bash\">\n                # decrease $count by 1, apparently last try was successful.\n                count=$(( $count - 1 ))\n                \n                message \"cryptsetup ($crypttarget): set up successfully\"\n                break\n<\/code><\/pre>\n<p>\u00e9s \u00edgy alak\u00edtjuk \u00e1t<\/p>\n<p><b class=\"spoiler_title\">Szerkesztett<\/b><\/p>\n<pre><code class=\"bash\">\n                # decrease $count by 1, apparently last try was successful.\n                count=$(( $count - 1 ))\n                \n\n                \/bin\/decrypt_derived $crypttarget | cryptsetup luksOpen \/dev\/disk\/by-uuid\/ *CRYPT_MAP*\n                \/bin\/decrypt_derived $crypttarget | cryptsetup luksOpen \/dev\/disk\/by-id\/ *CRYPT_MAP*\n\n                message \"cryptsetup ($crypttarget): set up successfully\"\n                break<\/code><\/pre>\n<p>Felh\u00edvjuk figyelm\u00e9t, hogy itt vagy UUID-t, vagy ID-t haszn\u00e1lhatunk. A l\u00e9nyeg, hogy a sz\u00fcks\u00e9ges HDD\/SSD meghajt\u00f3k a \/etc\/initramfs-tools\/modules k\u00f6nyvt\u00e1rban legyenek. A haszn\u00e1lt meghajt\u00f3i inform\u00e1ci\u00f3k a k\u00f6vetkez\u0151 paranccsal tal\u00e1lhat\u00f3ak: <i>udevadm info -a -n \/dev\/sdX | egrep 'looking|DRIVER'<\/i>.<\/p>\n<p>Most, hogy v\u00e9gezt\u00fcnk, \u00e9s minden f\u00e1jl a hely\u00e9n van, ind\u00edtsuk el <i>update-initramfs -u -k all -v<\/i>, a napl\u00f3z\u00e1sban <b>nem kell, hogy<\/b> a scriptjeink v\u00e9grehajt\u00e1sakor hib\u00e1k legyenek. \u00dajraind\u00edtjuk, be\u00edrjuk a kulcskifejez\u00e9st, \u00e9s egy kicsit v\u00e1runk, a lemezek sz\u00e1m\u00e1t\u00f3l f\u00fcgg\u0151en. Ezut\u00e1n a rendszer elindul, \u00e9s a rendszerind\u00edt\u00e1s v\u00e9gs\u0151 f\u00e1zis\u00e1ban, nevezetesen a root-part\u00edci\u00f3 \u201emounting\u201d-ja ut\u00e1n, v\u00e9grehajtja a partprobe parancsot - ez megtal\u00e1lja \u00e9s csatlakoztatja az \u00f6sszes l\u00e9trehozott part\u00edci\u00f3t a LUKS eszk\u00f6z\u00f6k\u00f6n, \u00e9s b\u00e1rmilyen t\u00f6mb, ak\u00e1r ZFS, ak\u00e1r mdadm, gond n\u00e9lk\u00fcl \u00f6ssze\u00e1ll! Mindez <b>a szolg\u00e1ltat\u00e1sok \u00e9s szolg\u00e1ltat\u00e1sok ind\u00edt\u00e1sa el\u0151tt, amelyeknek ezekre a lemezekre\/t\u00f6mb\u00f6kre sz\u00fcks\u00e9g\u00fck van.<\/b> update1<\/p>\n<p><b>: Hogyan<\/b>AEP <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/457260\/#comment_20315522\">\u00e9szrevettem<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/users\/aep\/\" class=\"user_link\">, ez a m\u00f3dszer csak a LUKS1-re m\u0171k\u00f6dik.<\/a><\/noindex>Mindenkinek j\u00f3 napot, j\u00f3 est\u00e9t! Ez a bejegyz\u00e9s hasznos lesz azok sz\u00e1m\u00e1ra, akik LUKS adatokat titkos\u00edtanak, \u00e9s le szeretn\u00e9k bontani a lemezeket Linuxon (Debian, Ubuntu) a root part\u00edci\u00f3 dek\u00f3dol\u00e1sa sor\u00e1n.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/457260\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u0441\u0435\u043c \u0434\u043e\u0431\u0440\u043e\u0433\u043e \u0434\u043d\u044f, \u043d\u043e\u0447\u0438! \u042d\u0442\u043e\u0442 \u043f\u043e\u0441\u0442 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u043b\u0435\u0437\u0435\u043d \u0442\u0435\u043c, \u043a\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0448\u0438\u0444\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 LUKS \u0438 \u0445\u043e\u0447\u0435\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u044c decrypt\u0434\u0435\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0443 \u0434\u0438\u0441\u043a\u043e\u0432 \u043f\u043e\u0434 Linux (Debian, Ubuntu) \u043d\u0430 \u0441\u0442\u0430\u0434\u0438\u0438 \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 root \u0440\u0430\u0437\u0434\u0435\u043b\u0430. \u0418 \u0442\u0430\u043a\u043e\u0439 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0432 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0435 \u044f \u043d\u0430\u0439\u0442\u0438 \u043d\u0435 \u0441\u043c\u043e\u0433. \u0421\u043e\u0432\u0441\u0435\u043c \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u0441 \u0443\u0432\u0435\u043b\u0438\u0447\u0435\u043d\u0438\u0435\u043c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0434\u0438\u0441\u043a\u043e\u0432 \u0432 \u043f\u043e\u043b\u043a\u0430\u0445, \u0441\u0442\u043e\u043b\u043a\u043d\u0443\u043b\u0441\u044f \u0441 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043e\u0439 \u0440\u0430\u0441\u0448\u0438\u0444\u0440\u043e\u0432\u043a\u0438 \u0434\u0438\u0441\u043a\u043e\u0432 \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0431\u043e\u043b\u0435\u0435 \u0447\u0435\u043c \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e\u0433\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-35652","post","type-post","status-publish","format-standard","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u0441\u0435\u043c \u0434\u043e\u0431\u0440\u043e\u0433\u043e \u0434\u043d\u044f, \u043d\u043e\u0447\u0438! 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