{"id":18258918,"url":"https://github.com/pottava/k8s-federated-clusters","last_synced_at":"2026-02-12T15:01:44.321Z","repository":{"id":147533184,"uuid":"106123994","full_name":"pottava/k8s-federated-clusters","owner":"pottava","description":"Setup procedures for kubernetes cluster federation","archived":false,"fork":false,"pushed_at":"2017-10-08T15:26:09.000Z","size":6,"stargazers_count":1,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"master","last_synced_at":"2025-08-19T20:49:30.931Z","etag":null,"topics":["cluster-federation","gke","https-load-balancing","kubernetes-setup"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/pottava.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2017-10-07T19:15:51.000Z","updated_at":"2017-10-09T02:46:09.000Z","dependencies_parsed_at":null,"dependency_job_id":"e1babdb4-fa48-45c3-8b71-5ddcac8305b2","html_url":"https://github.com/pottava/k8s-federated-clusters","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/pottava/k8s-federated-clusters","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pottava%2Fk8s-federated-clusters","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pottava%2Fk8s-federated-clusters/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pottava%2Fk8s-federated-clusters/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pottava%2Fk8s-federated-clusters/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/pottava","download_url":"https://codeload.github.com/pottava/k8s-federated-clusters/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pottava%2Fk8s-federated-clusters/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29369358,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-12T08:51:36.827Z","status":"ssl_error","status_checked_at":"2026-02-12T08:51:26.849Z","response_time":55,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["cluster-federation","gke","https-load-balancing","kubernetes-setup"],"created_at":"2024-11-05T10:35:24.636Z","updated_at":"2026-02-12T15:01:44.296Z","avatar_url":"https://github.com/pottava.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"Kubernetes: cluster federation\n---\n\n### 1. Set some variables\n\n```sh\n$ export DNS_ZONE=your-domain.com\n$ export PROJECT_ID=\n$ export COMPUTE_REGION=asia-northeast1\n$ export COMPUTE_ZONE=asia-northeast1-a\n$ export REGIONS=\"asia-northeast1 us-east4\"\n```\n\n### 2. CLI configurations\n\n```sh\n$ gcloud config set project $PROJECT_ID\n$ gcloud config set compute/region ${COMPUTE_REGION}\n$ gcloud config set compute/zone ${COMPUTE_ZONE}\n$ gcloud config configurations list\n```\n\n### 3. Register DNS records\n\n```sh\n$ export PROJECT_KEY=$( echo ${PROJECT_ID} | sed -e 's/\\..*//g' \\\n    | sed -e 's/[^a-zA-Z]//g' ) \u0026\u0026 echo ${PROJECT_KEY}\n$ gcloud dns managed-zones create ${PROJECT_KEY} \\\n    --description \"Kubernetes Federation Zone\" \\\n    --dns-name \"${DNS_ZONE}.\"\n```\n\nAssociate following name servers with DNS provider's.\n\n```sh\n$ gcloud dns record-sets list --zone ${PROJECT_KEY} \\\n    --name ${DNS_ZONE} --type NS --format=\"json\" \\\n    | jq -r \".[0].rrdatas[]\"\n```\n\n### 4. Create clusters\n\nWorkaround for RBAC errors.\n\n```\n$ gcloud config set container/use_client_certificate True\n$ export CLOUDSDK_CONTAINER_USE_CLIENT_CERTIFICATE=True\n```\n\nDecide kubernetes' version.\n\n```sh\n$ gcloud container get-server-config\n$ export K8S_VERSION=\n```\n\nCreate clusters on each regions.\n\n```sh\n$ for region in $( echo ${REGIONS} ); do\n    cluster_name=${PROJECT_KEY}-${region}\n    gcloud container clusters create \"${cluster_name}\" --cluster-version \"${K8S_VERSION}\" \\\n        --zone \"${region}-a\" --additional-zones \"${region}-b\" \\\n        --machine-type \"g1-small\" --image-type \"COS\" --disk-size 10 \\\n        --num-nodes 1 --enable-autoscaling --min-nodes=1 --max-nodes=2 \\\n        --enable-cloud-logging --enable-cloud-monitoring --enable-cloud-endpoints \\\n        --enable-autoupgrade --enable-autorepair \\\n        --scopes \"cloud-platform,storage-ro,logging-write,monitoring-write,service-control,service-management,https://www.googleapis.com/auth/pubsub,https://www.googleapis.com/auth/sqlservice.admin\" \\\n        --labels \"fed=worker\" \\\n        --async\n  done\n$ gcloud beta container clusters create ${PROJECT_KEY}-fed --cluster-version \"${K8S_VERSION}\" \\\n      --zone \"${COMPUTE_ZONE}\" \\\n      --machine-type \"g1-small\" --image-type \"COS\" --disk-size 10 \\\n      --num-nodes 1 \\\n      --no-enable-cloud-logging --no-enable-cloud-monitoring --no-enable-cloud-endpoints \\\n      --enable-autoupgrade --maintenance-window \"12:00\" --enable-autorepair \\\n      --scopes \"cloud-platform,storage-ro,service-control,service-management,https://www.googleapis.com/auth/ndev.clouddns.readwrite\" \\\n      --labels \"fed=manager\" \\\n      --preemptible\n```\n\nSave contexts as local configurations.\n\n```sh\n$ for region in $( echo ${REGIONS} ); do\n    cluster_name=${PROJECT_KEY}-${region}\n    gcloud container clusters get-credentials ${cluster_name} --zone \"${region}-a\"\n    sleep 1\n    new_name=$( echo ${region}.${PROJECT_KEY//_/-} )\n    kubectl config rename-context gke_${PROJECT_ID}_${region}-a_${PROJECT_KEY}-${region} ${new_name}\n  done\n$ gcloud container clusters get-credentials ${PROJECT_KEY}-fed --zone \"${COMPUTE_ZONE}\"\n$ host_context=$( echo host.${PROJECT_KEY//_/-} )\n$ kubectl config rename-context gke_${PROJECT_ID}_${COMPUTE_ZONE}_${PROJECT_KEY}-fed ${host_context}\n```\n\n### 5. Install and Join to kubefed\n\n```\n$ open https://kubernetes.io/docs/tasks/federation/set-up-cluster-federation-kubefed/#getting-kubefed\n```\n\nCheck its version.\n\n```\n$ kubefed version\n\nClient Version: version.Info{Major:\"1\", Minor:\"8\", GitVersion:\"v1.8.0\" ..\nServer Version: version.Info{Major:\"1\", Minor:\"7+\", GitVersion:\"v1.7.6-gke.1\" ..\n```\n\nCreate the federation control plane service.\n\n```\n$ kubefed init kfed --host-cluster-context ${host_context} \\\n    --dns-zone-name \"${DNS_ZONE}.\" --dns-provider google-clouddns\n$ kubectl --context=kfed create ns default\n```\n\n### 6. Join clusters into the federation\n\n```\n$ for region in $( echo ${REGIONS} ); do\n    cluster=$( echo ${region}.${PROJECT_KEY//_/-} )\n    kubefed --context=kfed join ${region}-cluster --cluster-context=${cluster} \\\n        --host-cluster-context=${host_context}\n  done\n$ kubectl config use-context kfed\n$ kubectl get clusters\n```\n\n### 7. Create global IP address for HTTP(S) Load Balancing\n\n```\n$ gcloud compute addresses create ${PROJECT_KEY}-ipv4 --ip-version IPV4 --global\n$ static_ip=$( gcloud compute addresses list --filter \"name~'${PROJECT_KEY}-ipv4'\" --format json )\n$ static_ip_name=$( echo ${static_ip} | jq -r '.[0].name' )\n$ external_ip=$( echo ${static_ip} | jq -r '.[0].address' ) \u0026\u0026 echo $external_ip\n```\n\n### 8. Deploy sample services to the clusters\n\n```\n$ kubectl apply -f resources/deployment.yaml\n$ kubectl apply -f resources/service.yaml\n$ sed -e \"s/\\\u003cstatic-ip-address-name\\\u003e/${static_ip_name}/\" \\\n    resources/ingress.yaml.template \u003e resources/ingress.yaml\n$ kubectl apply -f resources/ingress.yaml\n```\n\nWait about 10 min.\n\n```\n$ for region in $( echo ${REGIONS} ); do\n    cluster=$( echo ${region}.${PROJECT_KEY//_/-} )\n    echo \"\\n=============== ${cluster} ===============\"\n    kubectl --context=${cluster} get all,ing -o wide\n  done\n```\n\n### 9. Check its behavior\n\n```\n$ open http://${external_ip}\n$ open https://www.geoscreenshot.com/\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpottava%2Fk8s-federated-clusters","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpottava%2Fk8s-federated-clusters","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpottava%2Fk8s-federated-clusters/lists"}