Automation on Vinh Thang's AI Tech Notes

How to Snag the Elusive Oracle Cloud Always Free ARM64 Ampere A1 Instance

Mon, 24 Aug 2026 18:45:00 +0700

If you have ever tried to launch an ARM64 Ampere A1 Flex compute instance on Oracle Cloud Infrastructure (OCI) Always Free, you have almost certainly encountered this dreaded error message:

500-InternalError: Out of host capacity for shape VM.Standard.A1.Flex in availability domain...

Oracle’s Always Free tier offers one of the most generous compute allowances in the industry—up to 4 OCPUs and 24 GB RAM on enterprise-grade Ampere Altra ARM64 processors. Because of this, capacity in popular data centers (like Tokyo, Seoul, Ashburn, Frankfurt, and Singapore) is constantly saturated.

Autonomous AI Infrastructure: AnythingLLM, PostgreSQL 18 pgvector, and the Antigravity CLI (agy) System Agent

Mon, 24 Aug 2026 18:43:00 +0700

Most self-hosted AI setups stop at running a basic chat UI connected to a remote API. But what if your self-hosted AI wasn’t just a conversational bot, but a fully empowered autonomous system agent capable of managing your infrastructure, installing command-line tools, debugging services, and querying custom vector databases?

In this post, I will explore our complete self-hosted AI architecture running on an Always Free cloud Kubernetes cluster—featuring AnythingLLM, PostgreSQL 18 with pgvector, and the Google Antigravity CLI (agy).