Beyond Green Cluster Health: What I Learned Designing Amazon OpenSearch for Production

<p><em>Building a reliable OpenSearch environment with dedicated master nodes, VPC networking, Terraform, and operational monitoring.</em></p> <p>When you set up Amazon OpenSearch Service, it's easy to focus on one thing. Get the domain deployed and see a green cluster status.</p> <p>The infrastructure provisions fine. The endpoint comes up. The cluster says everything is healthy.</p> <p>That's a

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