{"id":113049,"date":"2024-01-22T17:28:02","date_gmt":"2024-01-22T15:28:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-bpftime-razvivaet-realizacziyu-ebpf-rabotayushhuyu-v-prostranstve-polzovatelya"},"modified":"2024-01-22T17:28:02","modified_gmt":"2024-01-22T15:28:04","slug":"proekt-bpftime-razvivaet-realizacziyu-ebpf-rabotayushhuyu-v-prostranstve-polzovatelya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/proekt-bpftime-razvivaet-realizacziyu-ebpf-rabotayushhuyu-v-prostranstve-polzovatelya","title":{"rendered":"A bpftime projekt az eBPF megval\u00f3s\u00edt\u00e1s\u00e1t fejleszti, amely a felhaszn\u00e1l\u00f3i t\u00e9rben m\u0171k\u00f6dik","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Bemutatkozik a bpftime projekt, amely a runtime-ot \u00e9s egy virtu\u00e1lis g\u00e9pet fejleszt a felhaszn\u00e1l\u00f3i t\u00e9rben v\u00e9grehajtott eBPF kezel\u0151k sz\u00e1m\u00e1ra. A bpftime lehet\u0151v\u00e9 teszi teljes m\u00e9rt\u00e9kben a felhaszn\u00e1l\u00f3i t\u00e9rben v\u00e9grehajtott eBPF nyomk\u00f6vet\u0151 \u00e9s beavatkoz\u00e1si programok futtat\u00e1s\u00e1t, amelyek olyan funkci\u00f3kat haszn\u00e1lnak, mint az uprobe \u00e9s a rendszerh\u00edv\u00e1sok szoftveres megfigyel\u00e9se. Megjegyzik, hogy a felesleges kontextusv\u00e1lt\u00e1sok kiz\u00e1r\u00e1s\u00e1val a bpftime ak\u00e1r t\u00edzszeres k\u00f6lts\u00e9gcs\u00f6kkent\u00e9st is lehet\u0151v\u00e9 tesz az uprobe \u00e9s uretprobe funkcionalit\u00e1shoz k\u00e9pest, amelyet a Linux kernel biztos\u00edt. Ezen k\u00edv\u00fcl a bpftime jelent\u0151sen megk\u00f6nny\u00edti a hibakeres\u00e9st, potenci\u00e1lisan alkalmazhat\u00f3 Linux kernel n\u00e9lk\u00fcli rendszereken, \u00e9s nem ig\u00e9nyel sz\u00e9lesk\u00f6r\u0171 jogosults\u00e1gokat, amelyek sz\u00fcks\u00e9gesek eBPF alkalmaz\u00e1sok kernelbe t\u00f6rt\u00e9n\u0151 bet\u00f6lt\u00e9s\u00e9hez. A projekt k\u00f3dja C\/C++ nyelveken \u00edr\u00f3dott \u00e9s MIT licenc alatt terjesztik. <\/p>\n

A rendszerh\u00edv\u00e1sok megfigyel\u00e9se \u00e9s az uprobe-ellen\u0151rz\u00e9sek integr\u00e1ci\u00f3ja a v\u00e9grehajtott k\u00f3d \u00fajra\u00edr\u00e1s\u00e1nak technik\u00e1j\u00e1val val\u00f3sul meg, amely sor\u00e1n a rendszerh\u00edv\u00e1sok, bel\u00e9p\u00e9si pontok \u00e9s lok\u00e1lis funkci\u00f3k h\u00edv\u00e1sait a hibakeres\u0151 kezel\u0151kre ir\u00e1ny\u00edtj\u00e1k a v\u00e9grehajtott alkalmaz\u00e1s g\u00e9pi k\u00f3dj\u00e1nak m\u00f3dos\u00edt\u00e1s\u00e1val, ami l\u00e9nyegesen hat\u00e9konyabb, mint az uprobe szint\u0171 kernel megfigyel\u00e9s. <\/p>\n

T\u00e1mogatja a funkci\u00f3k cser\u00e9j\u00e9t vagy m\u00f3dos\u00edt\u00e1s\u00e1t, kezel\u0151k (hook-ok) \u00e9s sz\u0171r\u0151k csatol\u00e1s\u00e1t, param\u00e9terek ir\u00e1ny\u00edt\u00e1s\u00e1t, blokkol\u00e1s\u00e1t vagy cser\u00e9j\u00e9t a rendszerh\u00edv\u00e1sok sor\u00e1n, bel\u00e9p\u00e9si \u00e9s kil\u00e9p\u00e9si pontok megfigyel\u00e9s\u00e9t, valamint kezel\u0151k behelyettes\u00edt\u00e9s\u00e9t a k\u00f3dban tal\u00e1lhat\u00f3 tetsz\u0151leges eltol\u00e1sn\u00e1l. A bpftime b\u00e1rmely fut\u00f3 folyamathoz csatlakoztathat\u00f3 a rendszerben a folyamok \u00fajraind\u00edt\u00e1sa vagy \u00fajraford\u00edt\u00e1sa n\u00e9lk\u00fcl. A bpftime beilleszt\u00e9se folyamatokhoz ptrace seg\u00edts\u00e9g\u00e9vel t\u00f6rt\u00e9nhet, m\u00edg a bet\u00f6lt\u00e9sekhez LD_PRELOAD haszn\u00e1lhat\u00f3. <\/p>\n

A bpftime keret\u00e9n bel\u00fcl egy runtime fejl\u0151dik, amely lehet\u0151v\u00e9 teszi eBPF programok csatlakoztat\u00e1s\u00e1t a rendszerh\u00edv\u00e1si \u00e9s uprobe nyomk\u00f6vet\u00e9si pontokhoz; virtu\u00e1lis g\u00e9p<\/a> eBPF JIT-tel a felhaszn\u00e1l\u00f3i folyamat szintj\u00e9n v\u00e9grehajtott eBPF programok elk\u00fcl\u00f6n\u00edtett futtat\u00e1sa \u00e9rdek\u00e9ben (tov\u00e1bb\u00e1 t\u00e1mogatott az AOT-compiler); h\u00e1tt\u00e9rfolyamat a maggal val\u00f3 k\u00f6lcs\u00f6nhat\u00e1sra \u00e9s az uprobe alrendszerrel val\u00f3 kompatibilit\u00e1s megszervez\u00e9s\u00e9re (a bpftime t\u00e1mogatja az eBPF bet\u00f6lt\u00e9si m\u00f3dj\u00e1t a felhaszn\u00e1l\u00f3i t\u00e9rbe a magb\u00f3l, lehet\u0151v\u00e9 t\u00e9ve az egy\u00fcttm\u0171k\u00f6d\u00e9st a magban haszn\u00e1lt eBPF programokkal, p\u00e9ld\u00e1ul kprobe-ok feldolgoz\u00e1s\u00e1ra vagy h\u00e1l\u00f3zati sz\u0171r\u0151k be\u00e1ll\u00edt\u00e1s\u00e1ra). <\/p>\n

Az eBPF virtu\u00e1lis g\u00e9pe csatlakoztathat\u00f3 k\u00f6nyvt\u00e1r form\u00e1j\u00e1ban van megval\u00f3s\u00edtva, \u00e9s hasonl\u00f3 API-t k\u00edn\u00e1l, mint az ubpf, lehet\u0151v\u00e9 t\u00e9ve annak integr\u00e1l\u00e1s\u00e1t m\u00e1s projektekbe. T\u00e1mogatja a t\u00f6bb folyamatb\u00f3l sz\u00e1rmaz\u00f3 adatok \u00f6sszes\u00edt\u00e9s\u00e9t megosztott mem\u00f3ri\u00e1ban elhelyezett k\u00f6z\u00f6s eBPF Map l\u00e9trehoz\u00e1s\u00e1val. A bpftime-mal egy\u00fctt haszn\u00e1lhat\u00f3k a magban haszn\u00e1lt eBPF tipikus kezel\u0151k is, \u00e9s a gy\u0171jt\u00e9shez a clang \u00e9s libbpf alap\u00fa szabv\u00e1nyos eszk\u00f6z\u00f6k alkalmazhat\u00f3k. <\/p>\n

A bpftime-mal a felhaszn\u00e1l\u00f3i t\u00e9rben futtathat\u00f3k olyan nyomk\u00f6vet\u0151 rendszerek, mint a BCC, bpftrace \u00e9s Deepflow. P\u00e9ld\u00e1ul bemutat\u00e1sra ker\u00fclt a BCC keretrendszerb\u0151l sz\u00e1rmaz\u00f3 sslsniff scripttel v\u00e9gzett titkos\u00edtott forgalom elemz\u00e9se \u00e9s t\u00e1rol\u00e1sa az nginx-ben. A v\u00e9gzett tesztek sor\u00e1n az nginx teljes\u00edtm\u00e9nye sslsniff kernel oldali v\u00e9grehajt\u00e1sakor 58%-kal cs\u00f6kkent, m\u00edg a kezel\u0151 felhaszn\u00e1l\u00f3i t\u00e9rbe helyez\u00e9se eset\u00e9n 12,3%-kal. <\/p>\n

A folyamatok nyomk\u00f6vet\u00e9s\u00e9nek architekt\u00far\u00e1ja az eredeti eBPF haszn\u00e1lat\u00e1val a magban:

\"A<\/center> <\/p>\n

A felhaszn\u00e1l\u00f3i t\u00e9rbeli nyomk\u00f6vet\u00e9s architekt\u00far\u00e1ja bpftime haszn\u00e1lat\u00e1val:

\"A<\/center> <\/p>\n

Hibrid \u00fczemm\u00f3d, amelyben a bpftime egy\u00fcttm\u0171k\u00f6dik az eBPF-fel a magban, p\u00e9ld\u00e1ul h\u00e1l\u00f3zati sz\u0171r\u0151k be\u00e1ll\u00edt\u00e1s\u00e1ra vagy egyes kezel\u0151k felhaszn\u00e1l\u00f3i t\u00e9rbe val\u00f3 \u00e1thelyez\u00e9s\u00e9re:

\"A<\/center> <\/p>\n

A j\u00f6v\u0151beli tervekb\u0151l kiemelend\u0151: hibailleszt\u00e9si lehet\u0151s\u00e9gek (Fault Injection); forr\u00f3 jav\u00edt\u00e1sok (Hot Patching) a logika m\u00f3dos\u00edt\u00e1s\u00e1ra vagy a bin\u00e1ris \u00f6sszes\u00edt\u00e9sek hib\u00e1inak jav\u00edt\u00e1s\u00e1ra; Nginx modul l\u00e9trehoz\u00e1sa, amely lehet\u0151v\u00e9 teszi eBPF programokkal val\u00f3 kiterjeszt\u00e9sek l\u00e9trehoz\u00e1s\u00e1t (p\u00e9ld\u00e1ul dinamikus \u00fatvonalv\u00e1laszt\u00e1s, gyors\u00edt\u00f3t\u00e1raz\u00e1s, biztons\u00e1gi politik\u00e1k alkalmaz\u00e1sa \u00e9s terhel\u00e9seloszt\u00e1s); a FUSE alrendszer funkcionalit\u00e1s\u00e1nak b\u0151v\u00edt\u00e9se (p\u00e9ld\u00e1ul eBPF programok form\u00e1j\u00e1ban kiterjeszt\u00e9sek l\u00e9trehoz\u00e1sa a f\u00e1jlrendszer gyors\u00edt\u00f3t\u00e1raz\u00e1s\u00e1ra vagy hozz\u00e1f\u00e9r\u00e9s kezel\u00e9s\u00e9re).
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0435\u043a\u0442 bpftime, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 runtime \u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u0443\u044e \u043c\u0430\u0448\u0438\u043d\u0443 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 eBPF \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. Bpftime \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0446\u0435\u043b\u0438\u043a\u043e\u043c \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f eBPF-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u0442\u0440\u0430\u0441\u0441\u0438\u0440\u043e\u0432\u043a\u0438 \u0438 \u0432\u043c\u0435\u0448\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0430 \u0432 \u0440\u0430\u0431\u043e\u0442\u0443 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0435 \u0442\u0430\u043a\u0438\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438, \u043a\u0430\u043a uprobe \u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0439 \u043f\u0435\u0440\u0435\u0445\u0432\u0430\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0445 \u0432\u044b\u0437\u043e\u0432\u043e\u0432. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044e \u043b\u0438\u0448\u043d\u0438\u0445 \u043f\u0435\u0440\u0435\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0439 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0430 bpftime \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0434\u0435\u0441\u044f\u0442\u0438\u043a\u0440\u0430\u0442\u043d\u043e\u0433\u043e \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044f \u043d\u0430\u043a\u043b\u0430\u0434\u043d\u044b\u0445 \u0440\u0430\u0441\u0445\u043e\u0434\u043e\u0432 \u043f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":113050,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-113049","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A bpftime projekt a felhaszn\u00e1l\u00f3i t\u00e9rben m\u0171k\u00f6d\u0151 eBPF megval\u00f3s\u00edt\u00e1st fejleszti | ProHoster","description":"Bemutatjuk a bpftime projektet, amely a runtime-ot \u00e9s egy virtu\u00e1lis g\u00e9pet fejleszt az eBPF kezel\u0151k felhaszn\u00e1l\u00f3i t\u00e9rben t\u00f6rt\u00e9n\u0151 v\u00e9grehajt\u00e1s\u00e1hoz.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/proekt-bpftime-razvivaet-realizacziyu-ebpf-rabotayushhuyu-v-prostranstve-polzovatelya","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041f\u0440\u043e\u0435\u043a\u0442 bpftime \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e eBPF, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0443\u044e \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f | ProHoster","og:description":"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0435\u043a\u0442 bpftime, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 runtime \u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u0443\u044e \u043c\u0430\u0448\u0438\u043d\u0443 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 eBPF \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 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