{"id":45512,"date":"2024-04-07T17:31:14","date_gmt":"2024-04-07T17:31:14","guid":{"rendered":"https:\/\/www.devopsschool.com\/blog\/?p=45512"},"modified":"2024-04-07T17:31:14","modified_gmt":"2024-04-07T17:31:14","slug":"google-cloud-step-by-step-tutorials-for-setting-up-multi-cluster-ingress-mci","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/google-cloud-step-by-step-tutorials-for-setting-up-multi-cluster-ingress-mci\/","title":{"rendered":"Google Cloud: Step by Step Tutorials for setting up Multi-cluster Ingress (MCI)"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-number\">1.<\/span> Enable Required APIs:\n   Ensure the necessary Google Cloud APIs are enabled <span class=\"hljs-keyword\">for<\/span> your project:\n   - Compute Engine API\n   - Kubernetes Engine API\n   - GKE Hub API\n   - Multi-cluster Ingress API\n   You can enable these through the Google Cloud Console <span class=\"hljs-keyword\">or<\/span> by using the gcloud command-line tool.\n\n<span class=\"hljs-number\">2.<\/span> Prepare Your GKE Clusters:\n   - Create <span class=\"hljs-keyword\">or<\/span> select existing GKE clusters in different regions to set up a multi-cluster environment.\n   - Register your clusters with a Google Cloud fleet <span class=\"hljs-keyword\">if<\/span> not already done. This step is crucial <span class=\"hljs-keyword\">for<\/span> MCI.\n\n<span class=\"hljs-number\">3.<\/span> Grant IAM Permissions:\n   Ensure the Google Cloud account <span class=\"hljs-keyword\">or<\/span> service account you<span class=\"hljs-string\">'re using has the necessary roles:\n   - roles\/container.admin (GKE Admin)\n   - roles\/gkehub.admin (GKE Hub Admin)\n   - roles\/compute.networkAdmin (Compute Network Admin)\n   These roles are needed to configure MCI and related resources.\n\n4. Configure Multi-cluster Ingress:\n   - Install the `gcloud` beta components if you haven'<\/span>t already:\n     `gcloud components install beta`\n   - <span class=\"hljs-keyword\">Use<\/span> `<span class=\"hljs-title\">gcloud<\/span>` <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">create<\/span> <span class=\"hljs-title\">a<\/span> <span class=\"hljs-title\">multi<\/span>-<span class=\"hljs-title\">cluster<\/span> <span class=\"hljs-title\">ingress<\/span>. <span class=\"hljs-title\">This<\/span> <span class=\"hljs-title\">step<\/span> <span class=\"hljs-title\">involves<\/span> <span class=\"hljs-title\">defining<\/span> <span class=\"hljs-title\">the<\/span> <span class=\"hljs-title\">global<\/span> <span class=\"hljs-title\">load<\/span> <span class=\"hljs-title\">balancer<\/span> <span class=\"hljs-title\">that<\/span> <span class=\"hljs-title\">will<\/span> <span class=\"hljs-title\">route<\/span> <span class=\"hljs-title\">traffic<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">your<\/span> <span class=\"hljs-title\">services<\/span> <span class=\"hljs-title\">across<\/span> <span class=\"hljs-title\">clusters<\/span>.\n\n5. <span class=\"hljs-title\">Deploy<\/span> <span class=\"hljs-title\">Your<\/span> <span class=\"hljs-title\">Application<\/span>:\n   - <span class=\"hljs-title\">Deploy<\/span> <span class=\"hljs-title\">your<\/span> <span class=\"hljs-title\">application<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">the<\/span> <span class=\"hljs-title\">clusters<\/span> <span class=\"hljs-title\">you<\/span> <span class=\"hljs-title\">want<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">include<\/span> <span class=\"hljs-title\">in<\/span> <span class=\"hljs-title\">the<\/span> <span class=\"hljs-title\">MCI<\/span> <span class=\"hljs-title\">setup<\/span>.\n   - <span class=\"hljs-title\">Ensure<\/span> <span class=\"hljs-title\">that<\/span> <span class=\"hljs-title\">each<\/span> <span class=\"hljs-title\">application<\/span> <span class=\"hljs-title\">instance<\/span> <span class=\"hljs-title\">is<\/span> <span class=\"hljs-title\">exposed<\/span> <span class=\"hljs-title\">via<\/span> <span class=\"hljs-title\">a<\/span> <span class=\"hljs-title\">Kubernetes<\/span> <span class=\"hljs-title\">Service<\/span> <span class=\"hljs-title\">of<\/span> <span class=\"hljs-title\">type<\/span> <span class=\"hljs-title\">ClusterIP<\/span> <span class=\"hljs-title\">or<\/span> <span class=\"hljs-title\">NodePort<\/span>.\n\n6. <span class=\"hljs-title\">Define<\/span> <span class=\"hljs-title\">MultiClusterService<\/span>:\n   - <span class=\"hljs-title\">Create<\/span> <span class=\"hljs-title\">a<\/span> <span class=\"hljs-title\">MultiClusterService<\/span> (<span class=\"hljs-title\">MCS<\/span>) <span class=\"hljs-title\">resource<\/span> <span class=\"hljs-title\">for<\/span> <span class=\"hljs-title\">each<\/span> <span class=\"hljs-title\">Kubernetes<\/span> <span class=\"hljs-title\">Service<\/span> <span class=\"hljs-title\">you<\/span> <span class=\"hljs-title\">want<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">expose<\/span> <span class=\"hljs-title\">through<\/span> <span class=\"hljs-title\">MCI<\/span>. <span class=\"hljs-title\">This<\/span> <span class=\"hljs-title\">step<\/span> <span class=\"hljs-title\">makes<\/span> <span class=\"hljs-title\">your<\/span> <span class=\"hljs-title\">services<\/span> <span class=\"hljs-title\">discoverable<\/span> <span class=\"hljs-title\">across<\/span> <span class=\"hljs-title\">clusters<\/span>.\n\n7. <span class=\"hljs-title\">Deploy<\/span> <span class=\"hljs-title\">MultiClusterIngress<\/span>:\n   - <span class=\"hljs-title\">Define<\/span> <span class=\"hljs-title\">and<\/span> <span class=\"hljs-title\">deploy<\/span> <span class=\"hljs-title\">a<\/span> <span class=\"hljs-title\">MultiClusterIngress<\/span> (<span class=\"hljs-title\">MCI<\/span>) <span class=\"hljs-title\">resource<\/span> <span class=\"hljs-title\">that<\/span> <span class=\"hljs-title\">specifies<\/span> <span class=\"hljs-title\">how<\/span> <span class=\"hljs-title\">external<\/span> <span class=\"hljs-title\">traffic<\/span> <span class=\"hljs-title\">should<\/span> <span class=\"hljs-title\">be<\/span> <span class=\"hljs-title\">routed<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">your<\/span> <span class=\"hljs-title\">multi<\/span>-<span class=\"hljs-title\">cluster<\/span> <span class=\"hljs-title\">services<\/span>.\n\n8. <span class=\"hljs-title\">Apply<\/span> <span class=\"hljs-title\">FrontendConfig<\/span> <span class=\"hljs-title\">and<\/span> <span class=\"hljs-title\">BackendConfig<\/span> (<span class=\"hljs-title\">Optional<\/span>):\n   - <span class=\"hljs-title\">If<\/span> <span class=\"hljs-title\">needed<\/span>, <span class=\"hljs-title\">define<\/span> <span class=\"hljs-title\">and<\/span> <span class=\"hljs-title\">apply<\/span> <span class=\"hljs-title\">FrontendConfig<\/span> <span class=\"hljs-title\">for<\/span> <span class=\"hljs-title\">custom<\/span> <span class=\"hljs-title\">frontend<\/span> <span class=\"hljs-title\">settings<\/span> <span class=\"hljs-title\">like<\/span> <span class=\"hljs-title\">SSL<\/span> <span class=\"hljs-title\">policies<\/span>.\n   - <span class=\"hljs-title\">Define<\/span> <span class=\"hljs-title\">and<\/span> <span class=\"hljs-title\">apply<\/span> <span class=\"hljs-title\">BackendConfig<\/span> <span class=\"hljs-title\">to<\/span> <span class=\"hljs-title\">customize<\/span> <span class=\"hljs-title\">backend<\/span> <span class=\"hljs-title\">settings<\/span>, <span class=\"hljs-title\">such<\/span> <span class=\"hljs-title\">as<\/span> <span class=\"hljs-title\">health<\/span> <span class=\"hljs-title\">checks<\/span> <span class=\"hljs-title\">and<\/span> <span class=\"hljs-title\">session<\/span> <span class=\"hljs-title\">affinity<\/span>.<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<script src=\"https:\/\/gist.github.com\/devops-school\/c7c7af6529980d89c0aa0311cb39b340.js\"><\/script>\n\n\n\n<p><strong>Steps:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Enable Required APIs:<\/strong>Bash<code>gcloud services enable gkehub.googleapis.com gcloud services enable anthos.googleapis.com gcloud services enable multiclusteringress.googleapis.com <\/code><\/li>\n\n\n\n<li><strong>Provision GKE Clusters (2 or more):<\/strong>Use the Cloud SDK&#8217;s <code>gcloud container clusters create<\/code> command to create GKE clusters in geographically distributed regions. Ensure Workload Identity Federation is enabled for seamless communication between clusters.Example for a cluster named <code>gke-us<\/code> in the <code>us-central1<\/code> region:Bash<code>gcloud container clusters create gke-us \\ --region=us-central1 \\ --enable-workload-identity \\ --workload-pool=PROJECT_ID.svc.id.goog \\ --release-channel=stable \\ --project=PROJECT_ID <\/code>Repeat for additional clusters, replacing region and names accordingly.<\/li>\n\n\n\n<li><strong>Register Clusters to a Fleet:<\/strong>Create a fleet in your project to manage your GKE clusters:Bash<code>gcloud multi-cluster ingress fleets create my-fleet \\ --project=PROJECT_ID <\/code>Use code\u00a0<a href=\"https:\/\/gemini.google.com\/faq#coding\" target=\"_blank\" rel=\"noreferrer noopener\">with caution.<\/a>content_copyRegister each cluster to the fleet using its location and name:Bash<code>gcloud container hub memberships register gke-us \\ --gke-cluster=us-central1\/gke-us \\ --enable-workload-identity # Repeat for other clusters (replace names and locations) <\/code><\/li>\n\n\n\n<li><strong>Select a Config Cluster:<\/strong>Choose a GKE cluster to act as the central configuration cluster. This cluster will manage MCI resources.<\/li>\n\n\n\n<li><strong>Deploy Applications (Optional):<\/strong>Deploy your applications to the desired GKE clusters using Kubernetes deployment manifests.<\/li>\n\n\n\n<li><strong>Create MultiClusterService Resources:<\/strong>In the config cluster, define <code>MultiClusterService<\/code> resources that specify backend services across registered clusters. These services will be targeted by the MCI.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Steps:<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","_joinchat":[],"footnotes":""},"categories":[2],"tags":[],"class_list":["post-45512","post","type-post","status-publish","format-standard","hentry","category-uncategorised"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/45512","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=45512"}],"version-history":[{"count":1,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/45512\/revisions"}],"predecessor-version":[{"id":45513,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/45512\/revisions\/45513"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=45512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=45512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=45512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}