{"id":510,"date":"2026-06-17T06:59:08","date_gmt":"2026-06-17T06:59:08","guid":{"rendered":"https:\/\/www.hostx.ro\/kb\/cum-functioneaza-kernelcare\/"},"modified":"2026-07-26T14:56:26","modified_gmt":"2026-07-26T12:56:26","password":"","slug":"cum-functioneaza-kernelcare","status":"publish","type":"docs","link":"https:\/\/www.hostx.ro\/kb\/cum-functioneaza-kernelcare\/","title":{"rendered":"Cum functioneaza KernelCare?"},"content":{"rendered":"<h3 id=\"ce-este-un-kernel\">Ce este un kernel?<\/h3>\n<p>Un <strong>kernel<\/strong> este un program de calculator care ruleaz\u0103 \u00een nucleul sistemului de operare al unui computer. Conecteaz\u0103 <strong>spa\u021biul utilizatorului<\/strong> (software-ul pe care \u00eel poate accesa un utilizator) la <strong>hardware<\/strong>-ul computerului printr-o zon\u0103 protejat\u0103 de memorie. Aceast\u0103 zon\u0103 este una dintre primele lucruri care \u00eencepe atunci c\u00e2nd un computer este pornit \u0219i este p\u0103strat separat de spa\u021biul utilizatorului pentru a \u00eempiedica supra\u00eenc\u0103rcarea sau modificarea fi\u0219ierelor, ceea ce ar putea duce la o performan\u021b\u0103 mai lent\u0103 sau la crashing.<\/p>\n<p>Kernel-ul este responsabil de <strong>executarea proceselor<\/strong> \u0219i de <strong>gestionarea \u00eentreruperilor<\/strong>, cum ar fi gestionarea memoriei \u0219i fi\u0219ierelor sau a managementului I\/O (de intrare\/ie\u0219ire sau input\/output). O asemenea component\u0103 important\u0103 a computerului necesit\u0103 din c\u00e2nd \u00een c\u00e2nd patch-uri pentru a fi \u00een siguran\u021b\u0103 \u0219i pentru a r\u0103m\u00e2ne performant. \u00cenainte de <strong>KernelCare<\/strong>, aceste actualiz\u0103ri necesitau oprirea manual\u0103 a serverului \u0219i serviciillor computerizate pentru a actualiza kernelul \u0219i apoi efectuarea unei restart\u0103ri complete, ceea ce v\u0103 cost\u0103 timp pre\u0163ios \u0219i energie.<\/p>\n<p>O repornire a serverului (reboot) poate dura peste 15 minute sau mai mult pentru a se finaliza, ceea ce \u00eenseamn\u0103 fie: restartarea pe durata nop\u021bii sau programarea unui timp de oprire a serverului, care s\u0103 nu afecteze prea mult clien\u021bii. \u00cen oricare din aceste cazuri, cineva nu va fi fericit &#8211; de aceea echipa CloudLinux a creat <strong>KernelCare<\/strong>.<\/p>\n<p>KernelCare corecteaz\u0103 vulnerabilit\u0103\u021bile de securitate ale kernelului \u00een mod automat, f\u0103r\u0103 repornire, ceea ce \u00eenseamn\u0103 c\u0103 nu mai sunt \u00eentreruperi de servicii pentru dvs. sau clien\u021bii dvs.<\/p>\n<h3 id=\"patch-ing-al-kernel-ului\">Patch-ing al kernel-ului<\/h3>\n<p>Un <strong>patch<\/strong> este o corec\u021bie la un cod original care fie schimb\u0103 sau \u00eenlocuie\u0219te o vulnerabilitate cu o versiune mai sigur\u0103 a codului. Un <strong>patch<\/strong> poate fi orice, de la o singur\u0103 linie de cod la modific\u0103ri \u00eentregi ale structurii de date.<\/p>\n<p>Echipa <strong>KernelCare<\/strong> monitorizeaz\u0103 constant listele de e-mail de securitate pentru a verifica vulnerabilit\u0103\u021bile. De \u00eendat\u0103 ce g\u0103se\u0219te unul, ace\u015ftia vor preg\u0103ti un patch \u0219i apoi \u00eel vor trimite serverelor de distribu\u021bie. Un agent va rula un proces pe serverul dvs., verific\u00e2nd serverele de distribu\u021bie <strong>la fiecare 4 ore<\/strong> p\u00e2n\u0103 c\u00e2nd va g\u0103si un patch nou \u0219i apoi \u00eel va aplica \u00een siguran\u021b\u0103 pe kernel-ul rulant, f\u0103r\u0103 a fi necesar\u0103 oprirea acestuia.<\/p>\n<p>Un modul special de kernel este utilizat pentru aplicarea patch-urilor. \u00cen primul r\u00e2nd, acesta \u00eencarc\u0103 actualizarea \u00een spa\u021biul de adrese al kernelului, apoi plaseaz\u0103 mut\u0103rile pe codul \/ datele originale pentru a v\u0103 asigura c\u0103 nu se execut\u0103 blocul de cod \u00een timpul actualiz\u0103rii. Odat\u0103 terminat, acesta va comuta \u00een siguran\u021b\u0103 calea de execu\u021bie de la original la codul actualizat \u0219i apoi se va asigura c\u0103 vechiul cod nu va mai rula niciodat\u0103.<\/p>\n<p><strong>KernelCare<\/strong> face toate acestea instantaneu, automat \u0219i f\u0103r\u0103 \u00eentreruperi de serviciu &#8211; nici nu ve\u021bi observa c\u0103 actualizarea are loc.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ce este un kernel? Un kernel este un program de calculator care ruleaz\u0103 \u00een nucleul sistemului de operare al unui computer. Conecteaz\u0103 spa\u021biul utilizatorului (software-ul pe care \u00eel poate accesa un utilizator) la hardware-ul computerului printr-o zon\u0103 protejat\u0103 de memorie. Aceast\u0103 zon\u0103 este una dintre primele lucruri care \u00eencepe atunci c\u00e2nd un computer este pornit &#8230; <a title=\"Cum functioneaza KernelCare?\" class=\"read-more\" href=\"https:\/\/www.hostx.ro\/kb\/cum-functioneaza-kernelcare\/\" aria-label=\"Cite\u0219te mai multe despre Cum functioneaza KernelCare?\">Cite\u0219te mai mult<\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"whmcs_kb_id":1547,"footnotes":""},"doc_category":[70],"doc_tag":[468,475,226,245],"class_list":["post-510","docs","type-docs","status-publish","hentry","doc_category-kernelcare","doc_tag-kernel","doc_tag-kernelcare","doc_tag-performanta","doc_tag-securitate"],"year_month":"2026-11","word_count":497,"total_views":"20","reactions":{"happy":"0","normal":"0","sad":"0"},"author_info":{"name":"Adrian Firican","author_nicename":"techeditor1","author_url":"https:\/\/www.hostx.ro\/kb\/author\/techeditor1\/"},"doc_category_info":[{"term_name":"KernelCare","term_url":"https:\/\/www.hostx.ro\/kb\/docs-category\/kernelcare\/"}],"doc_tag_info":[{"term_name":"kernel","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/kernel\/"},{"term_name":"KernelCare","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/kernelcare\/"},{"term_name":"performan\u021b\u0103","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/performanta\/"},{"term_name":"securitate","term_url":"https:\/\/www.hostx.ro\/kb\/docs-tag\/securitate\/"}],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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