{"id":5308,"date":"2026-10-06T13:25:49","date_gmt":"2026-10-06T13:25:49","guid":{"rendered":"https:\/\/zynoo.com\/blog\/install-kubernetes-ubuntu-k3s\/"},"modified":"2026-11-01T16:23:02","modified_gmt":"2026-11-01T16:23:02","slug":"install-kubernetes-ubuntu-k3s","status":"publish","type":"post","link":"https:\/\/zynoo.com\/blog\/pt\/install-kubernetes-ubuntu-k3s\/","title":{"rendered":"Como instalar Kubernetes no Ubuntu com K3s"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" id=\"h-\">Quer <strong>instalar Kubernetes no Ubuntu<\/strong> sem configurar um cluster complexo do zero? O K3s \u00e9 uma distribui\u00e7\u00e3o leve do Kubernetes que simplifica o processo, tornando-se uma op\u00e7\u00e3o pr\u00e1tica para desenvolvedores que est\u00e3o aprendendo Kubernetes em um VPS.<\/p>\n\n<p class=\"wp-block-paragraph\">Neste guia, voc\u00ea aprender\u00e1 a instalar Kubernetes no Ubuntu 24.04 usando K3s, criar um cluster de n\u00f3 \u00fanico, implantar uma aplica\u00e7\u00e3o Nginx e verificar se tudo funciona.<\/p>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea n\u00e3o precisar\u00e1 instalar o Docker nem configurar um runtime de cont\u00eainer separado.<\/p>\n\n<h2 id=\"h-what-is-k3s-and-why-use-it\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_que_e_K3s_e_por_que_usa-lo\"><\/span>O que \u00e9 K3s e por que us\u00e1-lo?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">O K3s \u00e9 uma distribui\u00e7\u00e3o leve e certificada pela CNCF, projetada para reduzir a complexidade da instala\u00e7\u00e3o e opera\u00e7\u00e3o do Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Ele re\u00fane componentes essenciais, incluindo um runtime de cont\u00eainer e a rede do cluster, em uma instala\u00e7\u00e3o simplificada.<\/p>\n\n<p class=\"wp-block-paragraph\">Diferentemente de uma instala\u00e7\u00e3o tradicional do Kubernetes com kubeadm, o K3s cuida automaticamente de grande parte da configura\u00e7\u00e3o inicial.<\/p>\n\n<p class=\"wp-block-paragraph\">Uma instala\u00e7\u00e3o do K3s em um \u00fanico n\u00f3 \u00e9 um cluster Kubernetes funcional, adequado para desenvolvimento, testes e aprendizado.<\/p>\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea n\u00e3o conhece conceitos do Kubernetes como Pods e Deployments, leia primeiro nosso guia <a href=\"https:\/\/zynoo.com\/blog\/pt\/what-is-kubernetes\/\">O que \u00e9 Kubernetes?<\/a>.<\/p>\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1-1024x576.webp\" alt=\"Instale Kubernetes no Ubuntu usando K3s\" class=\"wp-image-5287\" srcset=\"https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1-1024x576.webp 1024w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1-300x169.webp 300w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1-768x432.webp 768w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1-1536x864.webp 1536w, https:\/\/zynoo.com\/blog\/wp-content\/uploads\/2026\/11\/Install-Kubernetes-on-Ubuntu-Using-K3s-1.webp 1672w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n<h2 id=\"h-prerequisites\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Pre-requisitos\"><\/span>Pr\u00e9-requisitos<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Antes de come\u00e7ar, voc\u00ea precisar\u00e1 de:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Um servidor com Ubuntu 24.04 LTS.<\/li>\n\n\n\n<li>Acesso SSH com privil\u00e9gios sudo.<\/li>\n\n\n\n<li>Pelo menos 2 n\u00facleos de CPU e 2 GB de RAM.<\/li>\n\n\n\n<li>De prefer\u00eancia, 4 GB de RAM ou mais para um ambiente de aprendizado confort\u00e1vel.<\/li>\n\n\n\n<li>Espa\u00e7o suficiente em armazenamento SSD e acesso \u00e0 internet para baixar imagens de cont\u00eainer.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">O K3s indica oficialmente 2 n\u00facleos de CPU e 2 GB de RAM como requisitos m\u00ednimos para um n\u00f3 de servidor. As necessidades reais das cargas de trabalho podem ser maiores.<\/p>\n\n<div style=\"background:linear-gradient(110deg,#06347d,#0862d8);border-radius:10px;padding:20px 24px;margin:28px 0;color:#fff;font-family:inherit;\">\n  <div style=\"display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;\">\n    <div style=\"flex:1 1 230px;\">\n      <div style=\"font-size:17px;font-weight:700;line-height:1.4;margin-bottom:5px;\">\n        Precisa de um VPS Ubuntu para Kubernetes?\n      <\/div>\n      <div style=\"font-size:13px;line-height:1.6;color:#e1edff;\">\n        Implante o K3s com acesso root e recursos de servidor flex\u00edveis.\n      <\/div>\n    <\/div>\n    <a href=\"https:\/\/zynoo.com\/ubuntu-vps.html\" style=\"display:inline-block;background:#fff;color:#073b90;padding:11px 17px;border-radius:6px;font-size:13px;font-weight:700;text-decoration:none;white-space:nowrap;\">\n      Explore os VPS Ubuntu \u2192\n    <\/a>\n  <\/div>\n<\/div>\n\n<p class=\"wp-block-paragraph\"><strong>Nota de seguran\u00e7a:<\/strong> Mantenha o acesso SSH dispon\u00edvel e restrinja o acesso \u00e0 API do Kubernetes na porta 6443. Voc\u00ea n\u00e3o precisa abrir essa porta publicamente para este tutorial. Se estiver usando UFW ou outro firewall, consulte os requisitos oficiais de rede do K3s antes da instala\u00e7\u00e3o.<\/p>\n\n<h2 id=\"h-step-1-update-your-ubuntu-server\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_1_atualize_seu_servidor_Ubuntu\"><\/span>Etapa 1: atualize seu servidor Ubuntu<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Conecte-se ao seu servidor Ubuntu por SSH e atualize as informa\u00e7\u00f5es dos pacotes:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo apt update\nsudo apt upgrade -y<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Verifique a vers\u00e3o do Ubuntu:<\/p>\n\n<pre class=\"wp-block-code\"><code>lsb_release -a<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea dever\u00e1 ver Ubuntu 24.04 LTS.<\/p>\n\n<p class=\"wp-block-paragraph\">Reinicie o servidor se as atualiza\u00e7\u00f5es do sistema exigirem isso e, em seguida, reconecte-se por SSH.<\/p>\n\n<p class=\"wp-block-paragraph\">O K3s instalar\u00e1 seu pr\u00f3prio runtime de cont\u00eainer, portanto, o Docker Engine n\u00e3o \u00e9 necess\u00e1rio.<\/p>\n\n<h2 id=\"h-step-2-install-kubernetes-on-ubuntu-using-k3s\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_2_instale_Kubernetes_no_Ubuntu_usando_K3s\"><\/span>Etapa 2: instale Kubernetes no Ubuntu usando K3s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">O K3s fornece um script oficial de instala\u00e7\u00e3o.<\/p>\n\n<p class=\"wp-block-paragraph\">O comando padr\u00e3o de instala\u00e7\u00e3o \u00e9:<\/p>\n\n<pre class=\"wp-block-code\"><code>curl -sfL https:\/\/get.k3s.io | sh -<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Esse comando baixa e executa o instalador do K3s. Consulte as <a href=\"https:\/\/docs.k3s.io\/quick-start\">instru\u00e7\u00f5es oficiais de instala\u00e7\u00e3o<\/a> e examine o instalador antes de execut\u00e1-lo, especialmente em um servidor de produ\u00e7\u00e3o.<\/p>\n\n<p class=\"wp-block-paragraph\">A instala\u00e7\u00e3o configura o K3s como um servi\u00e7o systemd e instala utilit\u00e1rios de gerenciamento do Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Quando o processo terminar, verifique o servi\u00e7o:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo systemctl status k3s<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Procure por:<\/p>\n\n<pre class=\"wp-block-code\"><code>Active: active (running)<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Pressione <code>q<\/code> para sair da exibi\u00e7\u00e3o de status.<\/p>\n\n<p class=\"wp-block-paragraph\">Se o servi\u00e7o estiver em execu\u00e7\u00e3o, sua instala\u00e7\u00e3o do Kubernetes foi iniciada com sucesso.<\/p>\n\n<h2 id=\"h-step-3-verify-your-kubernetes-cluster\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_3_verifique_seu_cluster_Kubernetes\"><\/span>Etapa 3: verifique seu cluster Kubernetes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">O K3s inclui sua pr\u00f3pria ferramenta de linha de comando <code>kubectl<\/code> para gerenciar recursos do Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Execute:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get nodes<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Ap\u00f3s a inicializa\u00e7\u00e3o do cluster, voc\u00ea ver\u00e1 uma sa\u00edda semelhante a esta:<\/p>\n\n<pre class=\"wp-block-code\"><code>NAME        STATUS   ROLES                  AGE   VERSION\nubuntu-vps  Ready    control-plane,master   2m    v1.xx.x+k3s1<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Seu nome de host e a vers\u00e3o do Kubernetes ser\u00e3o diferentes.<\/p>\n\n<p class=\"wp-block-paragraph\">O valor importante \u00e9 <strong>Ready<\/strong>, que indica que o Kubernetes considera o n\u00f3 dispon\u00edvel para cargas de trabalho.<\/p>\n\n<p class=\"wp-block-paragraph\">Em seguida, verifique os Pods do sistema:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get pods -A<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Isso lista os Pods de todos os namespaces, incluindo os servi\u00e7os do sistema Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Alguns componentes podem levar um pouco de tempo para inicializar. Verifique novamente se ainda estiverem iniciando.<\/p>\n\n<p class=\"wp-block-paragraph\">Agora que voc\u00ea usou o K3s para instalar Kubernetes no Ubuntu, seu cluster est\u00e1 pronto para executar aplica\u00e7\u00f5es em cont\u00eaineres. Vamos implantar o Nginx para confirmar que tudo funciona.<\/p>\n\n<h2 id=\"h-step-4-deploy-your-first-application\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_4_implante_sua_primeira_aplicacao\"><\/span>Etapa 4: implante sua primeira aplica\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Agora que o cluster est\u00e1 em execu\u00e7\u00e3o, vamos implantar um servidor web Nginx simples.<\/p>\n\n<p class=\"wp-block-paragraph\">Crie um Deployment:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl create deployment demo-nginx --image=nginx:stable<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">O Kubernetes cria um Deployment que gerencia um cont\u00eainer Nginx.<\/p>\n\n<p class=\"wp-block-paragraph\">Verifique o progresso:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get deployments<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Aguarde at\u00e9 que o Deployment mostre uma r\u00e9plica dispon\u00edvel.<\/p>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea tamb\u00e9m pode inspecionar o Pod:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get pods<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">O Pod dever\u00e1, ap\u00f3s algum tempo, exibir o status <code>Running<\/code>, com o cont\u00eainer pronto.<\/p>\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea vir <code>ContainerCreating<\/code>, a imagem do cont\u00eainer ainda pode estar sendo baixada.<\/p>\n\n<h2 id=\"h-step-5-create-a-kubernetes-service\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_5_crie_um_Service_do_Kubernetes\"><\/span>Etapa 5: crie um Service do Kubernetes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Um Service do Kubernetes fornece um ponto de acesso de rede est\u00e1vel a uma aplica\u00e7\u00e3o, mesmo que seus Pods sejam substitu\u00eddos.<\/p>\n\n<p class=\"wp-block-paragraph\">Disponibilize o Deployment do Nginx internamente:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl expose deployment demo-nginx --type=ClusterIP --port=80<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Verifique o Service:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get services<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea dever\u00e1 ver um Service chamado <code>demo-nginx<\/code>, com um endere\u00e7o ClusterIP e a porta 80.<\/p>\n\n<p class=\"wp-block-paragraph\">O tipo <code>ClusterIP<\/code> torna a aplica\u00e7\u00e3o acess\u00edvel dentro do cluster Kubernetes. Ele n\u00e3o exp\u00f5e o Nginx diretamente \u00e0 internet p\u00fablica.<\/p>\n\n<h2 id=\"h-step-6-test-your-nginx-application\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Etapa_6_teste_sua_aplicacao_Nginx\"><\/span>Etapa 6: teste sua aplica\u00e7\u00e3o Nginx<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Usaremos o encaminhamento de portas do Kubernetes para testar a aplica\u00e7\u00e3o sem configurar um balanceador de carga p\u00fablico.<\/p>\n\n<p class=\"wp-block-paragraph\">Execute:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl port-forward service\/demo-nginx 8080:80<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Mantenha esta sess\u00e3o SSH aberta.<\/p>\n\n<p class=\"wp-block-paragraph\">O comando encaminha a porta 8080 da interface de loopback do servidor para a porta 80 do Service do Nginx.<\/p>\n\n<p class=\"wp-block-paragraph\">Abra uma segunda conex\u00e3o SSH com o mesmo servidor e execute:<\/p>\n\n<pre class=\"wp-block-code\"><code>curl http:\/\/127.0.0.1:8080<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea dever\u00e1 receber um HTML contendo a p\u00e1gina de boas-vindas padr\u00e3o do Nginx.<\/p>\n\n<p class=\"wp-block-paragraph\"><strong>Sucesso!<\/strong> Voc\u00ea instalou Kubernetes no Ubuntu usando K3s, implantou uma aplica\u00e7\u00e3o em cont\u00eainer e acessou-a por meio de um Service do Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Pressione <code>Ctrl+C<\/code> na primeira sess\u00e3o para interromper o encaminhamento de portas.<\/p>\n\n<p class=\"wp-block-paragraph\">Esse teste verifica apenas o acesso local. A publica\u00e7\u00e3o de uma aplica\u00e7\u00e3o na internet exige configura\u00e7\u00f5es adicionais de rede, DNS, TLS e seguran\u00e7a.<\/p>\n\n<h2 id=\"h-common-k3s-installation-problems\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Problemas_comuns_na_instalacao_do_K3s\"><\/span>Problemas comuns na instala\u00e7\u00e3o do K3s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<h3 id=\"h-k3s-service-won-t-start\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_servico_K3s_nao_inicia\"><\/span>O servi\u00e7o K3s n\u00e3o inicia<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Verifique os logs do servi\u00e7o:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo journalctl -u k3s -n 50<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Procure problemas de permiss\u00e3o, problemas de rede ou falhas em componentes.<\/p>\n\n<h3 id=\"h-kubernetes-node-shows-notready\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_no_do_Kubernetes_mostra_NotReady\"><\/span>O n\u00f3 do Kubernetes mostra NotReady<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Verifique os detalhes do n\u00f3:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl describe node<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Investigue as condi\u00e7\u00f5es relatadas, o uso dos recursos do sistema e a rede.<\/p>\n\n<h3 id=\"h-nginx-pod-isn-t-running\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_Pod_do_Nginx_nao_esta_em_execucao\"><\/span>O Pod do Nginx n\u00e3o est\u00e1 em execu\u00e7\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Inspecione o Pod:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl get pods<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Em seguida, examine os eventos do Deployment:<\/p>\n\n<pre class=\"wp-block-code\"><code>sudo k3s kubectl describe deployment demo-nginx<\/code><\/pre>\n\n<p class=\"wp-block-paragraph\">Falhas no download de imagens, recursos insuficientes ou problemas na rede do cluster podem impedir a inicializa\u00e7\u00e3o dos Pods.<\/p>\n\n<h3 id=\"h-port-forwarding-doesn-t-work\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"O_encaminhamento_de_portas_nao_funciona\"><\/span>O encaminhamento de portas n\u00e3o funciona<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n<p class=\"wp-block-paragraph\">Confirme que o Pod do Nginx est\u00e1 pronto e que o Service existe.<\/p>\n\n<p class=\"wp-block-paragraph\">Lembre-se de que o comando de encaminhamento de portas deve continuar em execu\u00e7\u00e3o enquanto voc\u00ea testa a aplica\u00e7\u00e3o pela segunda sess\u00e3o SSH.<\/p>\n\n<h2 id=\"h-do-you-need-docker-to-run-k3s\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"E_preciso_ter_Docker_para_executar_o_K3s\"><\/span>\u00c9 preciso ter Docker para executar o K3s?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">N\u00e3o. O K3s inclui o containerd, um runtime de cont\u00eainer usado para executar cargas de trabalho do Kubernetes.<\/p>\n\n<p class=\"wp-block-paragraph\">Voc\u00ea pode implantar imagens de cont\u00eainer compat\u00edveis, incluindo imagens criadas com Docker, sem instalar o Docker Engine no servidor K3s.<\/p>\n\n<div class=\"wp-block-group zynoo-related-reading has-border-color has-text-color has-background is-layout-flow wp-block-group-is-layout-flow\" style=\"border-color:#c7d8ef;border-width:1px;border-radius:8px;border-left-color:#0069ff;border-left-width:3px;color:#24364f;background-color:#eaf2ff;margin-top:28px;margin-bottom:28px;padding-top:18px;padding-right:22px;padding-bottom:18px;padding-left:22px;font-size:16px;line-height:1.8\">\n<p class=\"wp-block-paragraph\">Se voc\u00ea est\u00e1 come\u00e7ando a aprender sobre <strong>conteineriza\u00e7\u00e3o<\/strong>, nosso <a href=\"https:\/\/zynoo.com\/blog\/pt\/what-is-docker\/\">guia de Docker para iniciantes<\/a> explica como funcionam os cont\u00eaineres e as imagens.<\/p>\n<\/div>\n\n<h2 id=\"h-what-should-you-do-next\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Quais_sao_os_proximos_passos\"><\/span>Quais s\u00e3o os pr\u00f3ximos passos?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Seu cluster de n\u00f3 \u00fanico \u00e9 adequado para experimentar conceitos do Kubernetes, mas n\u00e3o \u00e9 automaticamente um ambiente de alta disponibilidade pronto para produ\u00e7\u00e3o.<\/p>\n\n<p class=\"wp-block-paragraph\">Antes de implantar aplica\u00e7\u00f5es essenciais para o neg\u00f3cio, planeje:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Controle de acesso ao cluster e atualiza\u00e7\u00f5es de seguran\u00e7a.<\/li>\n\n\n\n<li>Armazenamento persistente e procedimentos de backup.<\/li>\n\n\n\n<li>Monitoramento e limites de recursos.<\/li>\n\n\n\n<li>Exposi\u00e7\u00e3o segura da aplica\u00e7\u00e3o com HTTPS.<\/li>\n\n\n\n<li>Recupera\u00e7\u00e3o ap\u00f3s falhas no n\u00f3 ou no servidor.<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">Lembre-se de que um cluster de n\u00f3 \u00fanico ainda depende de uma \u00fanica m\u00e1quina f\u00edsica ou virtual. O Kubernetes n\u00e3o pode eliminar esse ponto \u00fanico de falha.<\/p>\n\n<h2 id=\"h-frequently-asked-questions\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Perguntas_frequentes\"><\/span>Perguntas frequentes<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1793539835003\"><strong class=\"schema-faq-question\">K3s \u00e9 a mesma coisa que Kubernetes?<\/strong> <p class=\"schema-faq-answer\">O K3s \u00e9 uma distribui\u00e7\u00e3o certificada do Kubernetes. Ele implementa as funcionalidades do Kubernetes, ao mesmo tempo que simplifica a instala\u00e7\u00e3o e reduz a sobrecarga operacional.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793539853452\"><strong class=\"schema-faq-question\">Posso instalar Kubernetes em um VPS?<\/strong> <p class=\"schema-faq-answer\">Sim. Voc\u00ea pode executar o K3s em um VPS Linux com CPU, RAM, armazenamento e acesso administrativo suficientes.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793539866316\"><strong class=\"schema-faq-question\">O K3s \u00e9 adequado para produ\u00e7\u00e3o?<\/strong> <p class=\"schema-faq-answer\">O K3s pode ser usado em produ\u00e7\u00e3o, mas a confiabilidade depende da arquitetura do cluster, da capacidade, da rede, da seguran\u00e7a e da configura\u00e7\u00e3o de backup.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1793539877990\"><strong class=\"schema-faq-question\">Posso desinstalar o K3s depois?<\/strong> <p class=\"schema-faq-answer\">Sim. O K3s fornece um script de desinstala\u00e7\u00e3o, mas remov\u00ea-lo pode apagar recursos do cluster e dados locais das cargas de trabalho. Fa\u00e7a backup de tudo que for importante antes de desinstal\u00e1-lo.<\/p> <\/div> <\/div>\n\n<h2 id=\"h-conclusion\" class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusao\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n<p class=\"wp-block-paragraph\">Agora voc\u00ea sabe como <strong>instalar Kubernetes no Ubuntu<\/strong> usando K3s, verificar seu cluster de n\u00f3 \u00fanico e implantar uma aplica\u00e7\u00e3o Nginx.<\/p>\n\n<p class=\"wp-block-paragraph\">Com o K3s, voc\u00ea criou um ambiente Kubernetes de n\u00f3 \u00fanico funcional, implantou o Nginx, disponibilizou-o por meio de um Service e verificou a aplica\u00e7\u00e3o usando o encaminhamento de portas.<\/p>\n\n<p class=\"wp-block-paragraph\">Agora voc\u00ea pode explorar Deployments, escalonamento, configura\u00e7\u00e3o e gerenciamento de clusters \u00e0 medida que ganha experi\u00eancia.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quer instalar Kubernetes no Ubuntu sem configurar um cluster complexo do zero? O K3s \u00e9 uma distribui\u00e7\u00e3o leve do Kubernetes que simplifica o processo, tornando-se uma op\u00e7\u00e3o pr\u00e1tica para desenvolvedores que est\u00e3o aprendendo Kubernetes em um VPS. Neste guia, voc\u00ea aprender\u00e1 a instalar Kubernetes no Ubuntu 24.04 usando K3s, criar um cluster de n\u00f3 \u00fanico, [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":5309,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[505],"tags":[368],"class_list":["post-5308","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tutoriais-linux","tag-como-fazer"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Como instalar Kubernetes no Ubuntu com K3s<\/title>\n<meta name=\"description\" content=\"Aprenda a instalar Kubernetes no Ubuntu 24.04 usando K3s. 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