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\n\n# ZooKeeper Advanced Helm Chart\n\nApache ZooKeeper provides a reliable, centralized register of configuration data and services for distributed applications.\nThe ZooKeeper Advanced Helm chart automates deployment and configuration of ZooKeeper in Kubernetes clusters using Minimus images with hardened security and production-grade configuration.\n\n \n## {{icon-list-search}} Prerequisites\n\n- A subscription to the Minimus images included in the chart\n- A running Kubernetes cluster (v1.21 or higher is recommended)\n- `kubectl` installed and configured\n- Helm v3.8 or higher for OCI support ([Installation instructions](https://helm.sh/docs/intro/install/))\n- Cluster Admin privileges\n- Persistent storage available in your cluster\n\n

\n\n---\n\n

\n \n## {{icon-rocket}}Try It Out\n\nIn this example we will deploy ZooKeeper on a Kubernetes cluster using the Minimus ZooKeeper Advanced Helm chart. We'll verify ZooKeeper connectivity and test its health using standard four-letter word commands.\n\n

\n\n### Step 1: Start Cluster\n\n

\n\nIf you have a cluster to work with, skip this step. Otherwise, start a Minikube cluster. [Deployment instructions](https://minikube.sigs.k8s.io/docs/start/?arch=%2Flinux%2Fx86-64%2Fstable%2Fbinary+download)\n\n

\n\n### Step 2: Create Namespace\n\n

\n\nCreate a namespace:\n\n```\nkubectl create ns zookeeper-advanced\n```\n\n{{if-enterprise}}\n\nNext, create a Kubernetes secret for the Minimus token:\n\n```\nkubectl create secret docker-registry minimus-registry \\\n --docker-server=reg.mini.dev \\\n --docker-username=minimus \\\n --docker-password={{pull-token}} \\\n --namespace=zookeeper-advanced\n```\n\n{{/if-enterprise}}\n\n

\n\n### Step 3: Deploy the Helm Chart\n\n

\n\nDeploy the Minimus Helm chart:\n\n```\nhelm install my-zookeeper-advanced {{oci-url}} \\\n --version {{chart-version}} \\\n -n zookeeper-advanced \\\n --wait\n```\n\nIf you want to override the chart's defaults, go to the Values tab, save a copy locally with your changes. Deploy the chart with your overrides using `-f values.yaml`:\n\n```\nhelm install my-zookeeper-advanced {{oci-url}} \\\n --version {{chart-version}} \\\n -f values.yaml \\\n -n zookeeper-advanced \\\n --wait\n```\n\n

\n\n### Step 4: Verify ZooKeeper Advanced is Running\n\n

\n\nConfirms the chart deployed successfully and ZooKeeper started:\n\n```\nkubectl get pods -n zookeeper-advanced -l app.kubernetes.io/name=zookeeper\n```\n\nYou should see output similar to:\n\n```\nNAME READY STATUS RESTARTS AGE\nmy-zookeeper-advanced-0 1/1 Running 0 2m\n```\n\n

\n\n### Step 5: Test ZooKeeper Connection\n\n

\n\nThis verifies ZooKeeper is actually responding, not just running.\n\nPort-forward:\n\n```\nkubectl port-forward -n zookeeper-advanced svc/my-zookeeper-advanced 2181:2181\n```\n\nHealth check:\n\n```\necho ruok | nc -w 2 127.0.0.1 2181\n```\n\nExpected: `imok`\n\nIf you get `imok`, the server is healthy and accepting connections.\n\n

\n\n### Step 6: Clean Up\n\n

\n\nUninstall the chart and delete the namespace to remove all resources:\n\n```bash\nhelm uninstall my-zookeeper-advanced -n zookeeper-advanced\nkubectl delete namespace zookeeper-advanced\n```\n\n

\n\n\n---\n\n

\n\n## {{icon-info-circle}}Terms & Info\n\n

\n\n### Trademark\n\n

\n\nThis catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.\n\n\n{{if-anonymous}} \n\n

\n\n### Disclaimer\n\n

\n\n\nImages are provided \"as-is\" without warranty of any kind. \"Hardened\" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our [Terms of Use](https://www.minimus.io/terms-of-use).\n\n{{/if-anonymous}}\n\n\n

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