{"id":147,"date":"2020-12-28T23:26:12","date_gmt":"2020-12-29T02:26:12","guid":{"rendered":"https:\/\/helpsysadmin.com.br\/blog\/?p=147"},"modified":"2025-12-28T23:42:34","modified_gmt":"2025-12-29T02:42:34","slug":"como-atualizar-kernel-no-centos","status":"publish","type":"post","link":"https:\/\/helpsysadmin.com.br\/blog\/como-atualizar-kernel-no-centos\/","title":{"rendered":"Como atualizar o Kernel do CentOS 7 \/ 8"},"content":{"rendered":"<div id=\"helps-2564211242\" class=\"helps-before-content-2 helps-entity-placement\"><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-3661896953164277\"\r\n     crossorigin=\"anonymous\"><\/script>\r\n<!-- 2anuncios display quadrado -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-3661896953164277\"\r\n     data-ad-slot=\"5051229894\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script><\/div>\n<p class=\"wp-block-paragraph\">Uma r\u00e1pida introdu\u00e7\u00e3o, afinal, o que \u00e9 o Kernel ?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Kernel \u00e9 a camada fundamental do sistema operacional. Trabalha no n\u00edvel mais b\u00e1sico e \u00e9 respons\u00e1vel pelo gerenciamento de recursos, mem\u00f3ria ram, CPU etc&#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Kernel \u00e9 iniciado quando o servidor ou PC \u00e9 iniciado e reconhece componentes,  GPU, mem\u00f3ria, perif\u00e9ricos. Em outras palavras o Kernel  \u00e9 o cora\u00e7\u00e3o do <a href=\"https:\/\/helpsysadmin.com.br\/blog\/como-instalar-crowdsec\/\" data-internallinksmanager029f6b8e52c=\"1\" title=\"Como instalar Crowdsec\" target=\"_blank\" rel=\"noopener\">Linux<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ok, agora vamos aos passos para atualizar de forma segura o Kernel do CentOS 7 ou 8.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Como fonte para nossa atualiza\u00e7\u00e3o, vamos utilizar o reposit\u00f3rio ELRepo que     \u00e9 um reposit\u00f3rio comunit\u00e1rio para distribui\u00e7\u00f5es Enterprise Linux( Red Hat Enterprise Linux (RHEL), CentOS, Scientific Linux ).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O ELRepo concentra-se em pacotes relacionados a hardware, incluindo drivers de sistema de arquivos, drivers gr\u00e1ficos, drivers de rede, drivers de placa de som, webcam e v\u00e1rios outros.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1 &#8211; Update, upgrade com Yum seu CentOS e um reboot ao final:<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>yum update -y; yum upgrade -y; reboot;<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2 &#8211;  Verificando  a vers\u00e3o do Kernel instalada no servidor<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>uname -snr<\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=552474916  fetchpriority=\"high\" decoding=\"async\" width=\"437\" height=\"101\" src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/kernel-default-centos.jpg\" alt=\"Kernel default Centos 7\" class=\"wp-image-148\" srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:437\/h:101\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/kernel-default-centos.jpg 437w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:69\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/kernel-default-centos.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:53\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/kernel-default-centos.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:81\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/kernel-default-centos.jpg 350w\" sizes=\"(max-width: 437px) 100vw, 437px\" \/><figcaption class=\"wp-element-caption\">O padr\u00e3o do CentOS 7 \u00e9 o Kernel 3.xx<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">3 &#8211; Instale o plugin do yum que ir\u00e1 permitir uma atualiza\u00e7\u00e3o mais r\u00e1pida<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>yum -y install yum-plugin-fastestmirror<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">4 &#8211; Verifique a vers\u00e3o do seu CentOS<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>cat \/etc\/os-release<\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1320081061  fetchpriority=\"high\" decoding=\"async\" width=\"343\" height=\"319\" src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/qual-versao-centos.jpg\" alt=\"Qual a Vers\u00e3o do CentOS\" class=\"wp-image-149\" srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:343\/h:319\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/qual-versao-centos.jpg 343w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:279\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/qual-versao-centos.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:214\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/qual-versao-centos.jpg 230w\" sizes=\"(max-width: 343px) 100vw, 343px\" \/><figcaption class=\"wp-element-caption\">Verifique a vers\u00e3o do CentOS em PRETTY_NAME ou REDHAT_SUPPORT_PRODUCT_VERSION<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">5 &#8211; Adicione a chave gpg do reposit\u00f3rio ELRepo ao servidor.<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>rpm --import https:\/\/www.elrepo.org\/RPM-GPG-KEY-elrepo.org<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">6 &#8211; De acordo com a vers\u00e3o do seu CentOS escolha a op\u00e7\u00e3o abaixo:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Para CentOS 7:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>yum install https:\/\/www.elrepo.org\/elrepo-release-7.el7.elrepo.noarch.rpm<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Para CentOS 8\/Almalinux 8:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>yum install https:\/\/www.elrepo.org\/elrepo-release-8.el8.elrepo.noarch.rpm<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">7 &#8211; Habilite o reposit\u00f3rio e instale o novo Kernel<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>yum --enablerepo=elrepo-kernel install kernel-ml<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Neste ponto n\u00f3s j\u00e1 instalamos o novo Kernel, agora vamos <a href=\"https:\/\/helpsysadmin.com.br\/blog\/configurar-login-automatico-phpmyadmin\/\" data-internallinksmanager029f6b8e52c=\"3\" title=\"Como Configurar Login Autom\u00e1tico no phpMyAdmin via DirectAdmin\">configurar<\/a> o Grub2 para iniciar com o novo Kernel<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">8 &#8211; Utilize o comando a seguir para listar as op\u00e7\u00f5es de Kernel<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>awk -F\\' '$1==&quot;menuentry &quot; {print i++ &quot; : &quot; $2}' \/etc\/grub2.cfg<\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1971167572  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg\"  decoding=\"async\" width=\"812\" height=\"127\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-150\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:812\/h:127\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 812w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:47\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:768\/h:120\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 768w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:36\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:55\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 350w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:480\/h:75\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/opcoes-kernel.jpg 480w\" \/><figcaption class=\"wp-element-caption\">Veja na op\u00e7\u00e3o 0 que temos o Kernel 5.10.3.x.x instalado.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">9 &#8211; Informe ao Grub a vers\u00e3o do Kernel que deseja utilizar<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>grub2-set-default 0<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">9 &#8211; Gere o grub2 config com o comando \u2018grub2-mkconfig\u2019 e a seguir de um reboot no CentOS Linux ou Almalinux 8 para aplicar o novo kernel.<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>grub2-mkconfig -o \/boot\/grub2\/grub.cfg\nreboot<\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">10 &#8211; Ap\u00f3s o reboot verifique a vers\u00e3o do Kernel instalada<\/p>\n\n\n\n<div class=\"wp-block-codemirror-blocks-code-block code-block\"><pre>uname -snr<\/pre><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-opt-id=1193992482  data-opt-src=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/versao-kernel.jpg\"  decoding=\"async\" width=\"392\" height=\"96\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"\" class=\"wp-image-151\" old-srcset=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:392\/h:96\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/versao-kernel.jpg 392w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:300\/h:73\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/versao-kernel.jpg 300w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:230\/h:56\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/versao-kernel.jpg 230w, https:\/\/mlkpd8g42nae.i.optimole.com\/w:350\/h:86\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/versao-kernel.jpg 350w\" \/><figcaption class=\"wp-element-caption\">Vers\u00e3o do Kernel<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ap\u00f3s instalar a nova vers\u00e3o do Kernel, \u00e9 poss\u00edvel otimizar a performance e seguran\u00e7a do servidor utilizando os m\u00f3dulos do Kernel . Solicite os servi\u00e7os da <a href=\"https:\/\/helpsysadmin.com.br\">HelpSysAdmin<\/a> <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>See More: <br><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/how-to-update-centos-7-8-kernel\/\" target=\"_blank\" rel=\"noreferrer noopener\">How to Update CentOS 7\/8 Kernel<\/a><br><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/antivirus-antimalware-antiphishing-on-centos-or-cloudlinux-with-clamav\/\" target=\"_blank\" rel=\"noreferrer noopener\">Antivirus, Antimalware, Antiphishing on Almalinux or Cloudlinux with ClamAV<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/almalinux-x-rock-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Almalinux and Rocky Linux<\/a><a href=\"https:\/\/helpsysadmin.com.br\/blog\/en\/antivirus-antimalware-antiphishing-on-centos-or-cloudlinux-with-clamav\/\" target=\"_blank\" rel=\"noreferrer noopener\"><br><\/a><\/strong><br><strong>Veja Mais:<\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/almalinux-e-rock-linux\/\" target=\"_blank\" rel=\"noreferrer noopener\">Almalinux e Rock Linux<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/administracao-linux-para-iniciantes\/\" target=\"_blank\" rel=\"noreferrer noopener\">Guia Completo de Administra\u00e7\u00e3o de Servidores Linux para Iniciantes<\/a><\/strong><br><strong><a href=\"https:\/\/helpsysadmin.com.br\/blog\/guia-completo-do-directadmin-para-administradores\/\">Guia Completo do DirectAdmin para Administradores | Instala\u00e7\u00e3o, Seguran\u00e7a e Performance<br><\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uma r\u00e1pida introdu\u00e7\u00e3o, afinal, o que \u00e9 o Kernel ? O Kernel \u00e9 a camada fundamental do sistema operacional. Trabalha no n\u00edvel [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":154,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[7,17,13,18],"class_list":["post-147","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gerenciamento-servidor","tag-centos","tag-kernel","tag-linux","tag-seguranca"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Como atualizar o Kernel do CentOS 7 \/ 8 - Blog HelpSysAdmin<\/title>\n<meta name=\"description\" content=\"Aprenda como atualizar kernel CentOS de forma segura com nosso guia pr\u00e1tico e utilize o reposit\u00f3rio ELRepo.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/helpsysadmin.com.br\/blog\/como-atualizar-kernel-no-centos\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Como atualizar o Kernel do CentOS 7 \/ 8\" \/>\n<meta property=\"og:description\" content=\"Aprenda como atualizar kernel CentOS de forma segura com nosso guia pr\u00e1tico e utilize o reposit\u00f3rio ELRepo.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/helpsysadmin.com.br\/blog\/como-atualizar-kernel-no-centos\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog HelpSysAdmin\" \/>\n<meta property=\"article:published_time\" content=\"2020-12-29T02:26:12+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-29T02:42:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mlkpd8g42nae.i.optimole.com\/w:auto\/h:auto\/q:mauto\/f:best\/https:\/\/helpsysadmin.com.br\/blog\/wp-content\/uploads\/2020\/12\/atualizar-kernel.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"289\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"HelpSysAdmin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@brhelpsysad\" \/>\n<meta name=\"twitter:site\" content=\"@brhelpsysad\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/\"},\"author\":{\"name\":\"HelpSysAdmin\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/#\\\/schema\\\/person\\\/bdbe3d7d71a0c6a3cb474c18da574efb\"},\"headline\":\"Como atualizar o Kernel do CentOS 7 \\\/ 8\",\"datePublished\":\"2020-12-29T02:26:12+00:00\",\"dateModified\":\"2025-12-29T02:42:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/\"},\"wordCount\":431,\"publisher\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\/\\/helpsysadmin.com.br\\/blog\\/wp-content\\/uploads\\/2020\\/12\\/atualizar-kernel.jpg\",\"keywords\":[\"centos\",\"kernel\",\"linux\",\"seguran\u00e7a\"],\"articleSection\":[\"Gerenciamento de Servidor\"],\"inLanguage\":\"pt-BR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/\",\"url\":\"https:\\\/\\\/helpsysadmin.com.br\\\/blog\\\/como-atualizar-kernel-no-centos\\\/\",\"name\":\"Como atualizar o Kernel do CentOS 7 \\\/ 8 - 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