Architecture, networking, and operations for stable VMs on interruptible capacity.
What Hermes Agent from Nous Research can do and how to run it in a container on microsrv: official image pinned by digest, gateway mode, dashboard with basic auth, and publishing via an HTTPS gateway.
How to pair the density of containers with the flexibility of KVM virtual machines in a unified private network using a self-hosted Git & CI/CD stack.
How live migration works: pre-copy, dirty pages, stop-and-copy, cold restart as a fallback, and the way the microsrv orchestrator migrates VMs before Spot hosts are reclaimed.
How ephemeral disks differ from replicated volumes, what RPO looks like after a hard failure, why synchronization must begin before migration, and how microsrv preserves filesystems when a Spot host is reclaimed.
A TCO model for Spot and On-Demand capacity: list price, uptime, downtime costs, and operational overhead. Why a 70% raw Spot discount does not yield 70% savings in production. How microsrv delivers about 25% without rearchitecting.
The risks of exposing port 22, the differences between a bastion or jump host and an SSH gateway, agent forwarding, and a stable ssh -A <vm>@msrv.space address across live migrations.
microsrv's network layer explained: decoupling guest addresses from physical hosts, isolated VPCs, SSH gateway and HTTPS gateway, and preserved TCP sessions during live migration.
How Spot and preemptible instances work: where discounts of up to 80% come from, how eviction notices work, what limitations apply, and how to design applications for interruptible capacity.