MaruOps · Infrastructure and AI notes
Linux, Kubernetes
and local AI.
Linux, networking, Kubernetes and local LLMs.
Configuration choices and troubleshooting, explained step by step.
Series guides
Kubernetes Lab
Prepare three VMs, build a cluster, then work through deployment, networking and recovery.
Local LLM
Run a first model, then explore APIs, document retrieval, tools and operations.
Git and GitOps
Follow repositories and commits through CI, deployment and GitOps recovery.
Latest articles
Browse the topics to find the guide you need.
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US spot Bitcoin ETFs lose $635 million in one session
US Bitcoin ETFs lost $635 million in one session. Compare daily, weekly and monthly figures, and distinguish net flows from trading turnover and changes in asset values.
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Bitcoin Core accelerates fixes for easily discoverable vulnerabilities
Bitcoin Core is accelerating fixes for easily discoverable issues. Learn how discoverability differs from severity and what operators should check before and after upgrades.
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GitHub Stacked PRs Reach GA: Design Review Boundaries and Merge Dependencies
GitHub made stacked pull requests generally available. Align small review units with dependencies, branch rules, merge queues, and rollback requirements.
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GitHub Package Firewall Public Preview: Start with npm and Download Paths
GitHub introduced an install-time package firewall preview. Note its current npm-only scope, preview billing terms, and the download paths that must pass through the policy gate.
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GitHub CLI Previews Expiring OAuth Tokens: Find Scripts That Cache Credentials
GitHub CLI introduced an opt-in preview of expiring, refreshable OAuth tokens. Check scripts that copy tokens and review Git credential-helper behavior before switching.
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Enterprise GitHub App Installations Reach GA: Review Classic PAT Automation
GitHub made enterprise app installations generally available with broader administration API permissions. Inventory existing calls before migrating personal-token automation to app identities.
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Rust 1.99.1 Fixes Regressions in FFI bool, UEFI, and macOS Linking
Rust 1.99.1 fixes bool-return behavior across FFI, missing wcslen symbols, and macOS linker loading. Rebuild and test the actual target platforms used by your project.
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Python 3.15.1, 3.14.9, and 3.13.17 Security Releases: Check Existing venvs
Python issued security releases updating bundled pip and certificate data. Installing an interpreter does not automatically update the tools inside existing virtual environments.
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Kubernetes Node Swap: Evaluate Density Against Tail Latency
The Kubernetes project published an NVMe-backed node-swap experiment. Treat density gains as workload-specific measurements and examine paging, I/O contention, and latency.
About these notes
Configuration
and troubleshooting.
From first configuration to operational issues.
Find what to inspect, why it matters, and how to proceed.