{"id":5782,"date":"2026-05-27T11:02:50","date_gmt":"2026-05-27T11:02:50","guid":{"rendered":"https:\/\/cheapsslweb.com\/resources\/?p=5782"},"modified":"2026-06-16T09:29:58","modified_gmt":"2026-06-16T09:29:58","slug":"how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager","status":"publish","type":"post","link":"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\/","title":{"rendered":"How to Install an ACME SSL Certificate in Kubernetes using cert-manager?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">An alternative approach will need to be used when securing applications running on Kubernetes versus using traditional servers or hosting panels.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The Kubernetes environment allows for using a fully automated and scalable method of managing and deploying SSL certificates with a declarative approach compared to the manual installation process typically used by systems based on the ACME protocol.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With tools such as cert-manager and providing External Account Binding from companies such as DigiCert and Sectigo, you can eliminate the need to manually issue, deploy, and <a href=\"https:\/\/cheapsslweb.com\/renew-ssl-certificate\">renew your SSL certificate<\/a> throughout your entire cluster.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This documentation shows you how to install and configure the ACME SSL certificate on Kubernetes and will include an explanation of the architectural concepts of an ACME SSL certificate installation, so that not only can you implement the installation, but also have some insight into <a href=\"https:\/\/cheapsslweb.com\/ssl-certificate-automation\">how an ACME SSL certificate works<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Prerequisites<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Before beginning the process, ensure that you have the following:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>At least a functioning <strong>Kubernetes cluster<\/strong> (v1.23+ recommended)<\/li>\n\n\n\n<li>A configured &#8216;<strong>kubectl<\/strong>&#8216; command line utility connected to your Kubernetes cluster<\/li>\n\n\n\n<li>One of the popular <strong>ingress controllers<\/strong> (NGINX or Traefik, etc.) in place and functioning correctly<\/li>\n\n\n\n<li>A <strong>DNS entry<\/strong> that points to the public IP of your ingress controller<\/li>\n\n\n\n<li><strong>ACME credentials<\/strong> from your cert provider (which should include): ACME Directory URL, EAB Key ID (KID), and EAB HMAC Key<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Steps to Install an ACME SSL Certificate in Kubernetes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Step 1: Install cert-manager<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The first step to get an ACME SSL certificate using Kubernetes requires installing <strong>cert-manager<\/strong>. The recommended way to set up cert-manager is using Helm. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Helm accomplishes this by setting up all the things needed for cert-manager to work correctly, including CRDs, webhooks, controllers, etc&#8230;<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl create namespace cert-manager\nhelm repo add jetstack https:\/\/charts.jetstack.io\nhelm repo update\nhelm install cert-manager jetstack\/cert-manager \\\n&nbsp;--namespace cert-manager \\\n&nbsp;--version v1.14.4 \\\n&nbsp;--set installCRDs=true<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>After installation, verify that all pods are running:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get pods -n cert-manager<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">You should see <strong>cert-manager, cert-manager-webhook, and cert-manager-cainjector<\/strong> in a running state.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: Create a Secret for EAB Credentials<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Next, you need to securely store your EAB credentials using a <strong>Kubernetes secret<\/strong>. Storing your credentials using a Kubernetes secret keeps your sensitive keys secure by encrypting the data in transit.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl create secret generic acme-eab-secret \\\n&nbsp;--namespace cert-manager \\\n&nbsp;--from-literal=eab-kid=\"YOUR_EAB_KID\" \\\n&nbsp;--from-literal=eab-hmac-key=\"YOUR_EAB_HMAC_KEY\"<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">You will replace the example values with your actual values and then reference this secret in your issuer configuration.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Step 3: Create a ClusterIssuer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Now define a <strong>ClusterIssuer<\/strong>, which tells cert-manager which ACME server to use and how to authenticate using EAB.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: cert-manager.io\/v1\nkind: ClusterIssuer\nmetadata:\nname: acme-issuer\nspec:\nacme:\n&nbsp;&nbsp; server: https:\/\/acme.yourca.com\/v2\/DV\n&nbsp;&nbsp; email: admin@yourdomain.com\n&nbsp;&nbsp; privateKeySecretRef:\n&nbsp;&nbsp;&nbsp;&nbsp; name: acme-private-key\n&nbsp;&nbsp; externalAccountBinding:\n&nbsp;&nbsp;&nbsp;&nbsp; keyID: YOUR_EAB_KID\n&nbsp;&nbsp;&nbsp;&nbsp; keySecretRef:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; name: acme-eab-secret\nkey: eab-hmac-key\nsolvers:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; - http01:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ingress:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; class: nginx<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Apply this Configuration:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl apply -f clusterissuer.yaml<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">This step connects your Kubernetes cluster to your certificate authority.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Step 4: Create a Certificate Resource<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Next, create a <strong>Certificate resource<\/strong> that defines which domain you want to secure. cert-manager will automatically request and generate the certificate.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: cert-manager.io\/v1\nkind: Certificate\nmetadata:\n&nbsp;name: my-ssl-cert\n&nbsp;namespace: default\nspec:\nsecretName: my-ssl-cert-tls\nissuerRef:\n name: acme-issuer\n&nbsp;&nbsp; kind: ClusterIssuer\n&nbsp;commonName: yourdomain.com\n&nbsp;dnsNames:\n&nbsp;&nbsp; - yourdomain.com\n&nbsp;&nbsp; - www.yourdomain.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Apply it:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl apply -f certificate.yaml<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Once applied, cert-manager will initiate the ACME challenge and generate the certificate.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Step 5: Configure Ingress to Use SSL<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Now update your ingress resource to use the generated TLS certificate. This is where HTTPS actually gets enabled.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>apiVersion: networking.k8s.io\/v1\nkind: Ingress\nmetadata:\n&nbsp;name: my-ingress\n&nbsp;namespace: default\n&nbsp;annotations:\n&nbsp;&nbsp; cert-manager.io\/cluster-issuer: acme-issuer\nspec:\n&nbsp;tls:\n&nbsp;&nbsp; - hosts:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - yourdomain.com\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - www.yourdomain.com\n&nbsp;&nbsp;&nbsp;&nbsp; secretName: my-ssl-cert-tls\n&nbsp;rules:\n&nbsp;&nbsp; - host: yourdomain.com\nhttp:\npaths:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; - path: \/\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; pathType: Prefix\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; backend:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; service:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; name: your-service\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; port:\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; number: 80\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Apply it:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl apply -f ingress.yaml<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Once this is done, your application will start serving traffic over HTTPS.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Step 6: Verify Certificate and Auto-Renewal<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">After deployment, verify the certificate status:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl describe certificate my-ssl-cert<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>You can also check certificate requests:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl get certificaterequests<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>To manually test renewal:<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>kubectl cert-manager renew my-ssl-cert<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The TLS Secret, issued by cert-manager, can be automatically renewed and updated at least 30 days before the actual certification expires, with no interruption or disruption in service during the process of renewing the TLS certificate.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When cert-manager is set up to automatically create and manage certificates for you, you will not have to manually work to keep your site secure, and there will be no downtime associated with that process.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By using <a href=\"https:\/\/cheapsslweb.com\/\">CheapSSLweb as your SSL provider<\/a>, you can be sure that your SSL Certificates will come from leading SSL providers like DigiCert and Sectigo, will have excellent pricing and enterprise-quality features, and will work with Kubernetes and contemporary ACME processes without issue. <a href=\"https:\/\/cheapsslweb.com\/acme\/sectigo-acme-ssl-certificate\">Purchase Sectigo ACME Certificate<\/a> and enjoy automation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>An alternative approach will need to be used when securing applications running on Kubernetes versus using traditional servers or hosting panels. The Kubernetes environment allows for using a fully automated and scalable method of managing and deploying SSL certificates with a declarative approach compared to the manual installation process typically used by systems based on<span class=\"morelink d-block mt-3\"><a href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\/\">Read More<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":5783,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[568],"tags":[563,562],"class_list":["post-5782","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssl-automation","tag-kubernetes-ssl-automation","tag-kubernetes-using-acme-ssl","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Install an ACME SSL Certificate in Kubernetes?<\/title>\n<meta name=\"description\" content=\"Secure Kubernetes workloads with ACME SSL and cert-manager. Explore installation steps, certificate issuance, and automatic renewal setup.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Install an ACME SSL Certificate in Kubernetes?\" \/>\n<meta property=\"og:description\" content=\"Secure Kubernetes workloads with ACME SSL and cert-manager. Explore installation steps, certificate issuance, and automatic renewal setup.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cheapsslweb.com\/resources\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\/\" \/>\n<meta property=\"og:site_name\" content=\"CheapSSLWeb.com Resources\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/cheapsslweb\" \/>\n<meta property=\"article:published_time\" content=\"2026-05-27T11:02:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-16T09:29:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cheapsslweb.com\/resources\/wp-content\/uploads\/2026\/05\/acme-ssl-configuration-kubernetes.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"960\" \/>\n\t<meta property=\"og:image:height\" content=\"621\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Janki Mehta\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@cheapsslweb\" \/>\n<meta name=\"twitter:site\" content=\"@cheapsslweb\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/\"},\"author\":{\"name\":\"Janki Mehta\",\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/#\\\/schema\\\/person\\\/c7d26eacacd9392c23be9d82e9af145e\"},\"headline\":\"How to Install an ACME SSL Certificate in Kubernetes using cert-manager?\",\"datePublished\":\"2026-05-27T11:02:50+00:00\",\"dateModified\":\"2026-06-16T09:29:58+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/\"},\"wordCount\":620,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/acme-ssl-configuration-kubernetes.webp\",\"keywords\":[\"Kubernetes SSL Automation\",\"Kubernetes Using ACME SSL\"],\"articleSection\":[\"SSL Automation\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/\",\"url\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/\",\"name\":\"How to Install an ACME SSL Certificate in Kubernetes?\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/how-to-install-an-acme-ssl-certificate-in-kubernetes-using-cert-manager\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cheapsslweb.com\\\/resources\\\/wp-content\\\/uploads\\\/2026\\\/05\\\/acme-ssl-configuration-kubernetes.webp\",\"datePublished\":\"2026-05-27T11:02:50+00:00\",\"dateModified\":\"2026-06-16T09:29:58+00:00\",\"description\":\"Secure Kubernetes workloads with ACME SSL and cert-manager. 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