https://vinhthang.dev/tags/google-cloud/Recent content in Google Cloud on Vinh Thang's AI Tech NotesHugoen-usThu, 27 Aug 2026 19:45:00 +0700https://vinhthang.dev/posts/gcp-always-free-oracle-linux-10-cross-cloud/Thu, 27 Aug 2026 19:45:00 +0700https://vinhthang.dev/posts/gcp-always-free-oracle-linux-10-cross-cloud/<p>Why settle for one free cloud provider when you can build an automated, resilient <strong>multi-cloud Kubernetes cluster across Oracle Cloud (OCI) and Google Cloud Platform (GCP)</strong> — completely for <strong>$0/month</strong>?</p> <p>In this post, I walk through the end-to-end process of:</p> <ol> <li>Provisioning an <strong>Oracle Linux Server 10.1</strong> instance on Google Cloud&rsquo;s <strong>Always Free Tier (<code>gce10</code>)</strong>.</li> <li>Applying kernel and daemon memory hardening to reclaim ~250 MB of RAM.</li> <li>Joining <code>gce10</code> as a worker node into our central <strong>K3s Kubernetes cluster</strong> across a secure <strong>WireGuard mesh</strong>.</li> <li>Running a head-to-head performance benchmark comparing <strong>Apple Silicon M1</strong>, <strong>OCI Ampere ARM (<code>arm10</code>)</strong>, <strong>GCP Intel Xeon (<code>gce10</code>)</strong>, and <strong>OCI AMD EPYC (<code>amd10</code>/<code>amd11</code>)</strong>.</li> </ol> <hr> <h2 id="-1-multi-cloud-k3s-kubernetes-fleet-architecture">🏛️ 1. Multi-Cloud K3s Kubernetes Fleet Architecture</h2> <p>Our fleet previously lived entirely in OCI Tokyo. Adding <strong><code>gce10</code></strong> in GCP Iowa (<code>us-central1</code>) creates a geo-distributed cross-cloud presence with a dedicated US edge outpost.</p>