DevOps&SRE Library

substrate

Agent Substrate delivers a performant, high density runtime environment for large scale agent deployments. At its core, Agent Substrate maps a larger set of "actors" (applications such as agents) onto a smaller set of ready "workers", relying on the fact that agent-like applications tend to be idle most of the time to achieve heavy multiplexing.

https://github.com/agent-substrate/substrate

ksolver

Kubernetes cluster cost optimizer. Connects to a live cluster (or a saved snapshot), collects every scheduling constraint, and uses CP-SAT constraint programming to find the cheapest node fleet that still satisfies all placement rules.

https://github.com/syslenslabs/ksolver

grpc-streams-checker

Synthetic monitoring for gRPC server-side streams — open each stream, verify frames actually arrive, and export Prometheus metrics.

https://github.com/youngpabl0/grpc-streams-checker

k8s-mechanic

k8s-mechanic is a Kubernetes controller that watches your cluster for failures, investigates them automatically, and opens pull requests on your GitOps repository with proposed fixes — all without leaving your cluster. When a Pod is crash-looping, a Deployment is degraded, or a Node goes NotReady, mechanic spawns an in-cluster OpenCode agent that inspects the live cluster, locates the relevant manifests in your GitOps repo, determines the root cause, and opens a PR.

https://github.com/lenaxia/k8s-mechanic

🤖 DevOps в эпоху AI трансформации: что работает уже сейчас! 17 сентября Сбер собирает DevOps-инженеров, SRE и платформенные команды на встречу о том, как AI меняет работу с инфраструктурой, релизами и безопасностью. Обсудим: 🔘Platform Engineering и IDP: как строить внутренние платформы без лишней сложности 🔘Agentic engineering: каких агентов уже можно доверить пайплайнам 🔘Security на скорости: как закрывать уязвимости, когда счет идет на часы Своим опытом поделятся практики из Авито, Сбера, Cloud․ru и Т-Банка. Встречаемся 17 сентября в 17:00 в Сбер.Среде (Москва, Земляной Вал 9А) или онлайн. Мест всего 150 — успей занять своё по ссылке!

Ephemeral Environments: Automating QA for Reliable Cloud-Native Systems

Ephemeral environments are short-lived, isolated, fully provisioned, on-demand test environments created automatically from a pull request and destroyed the moment their job is done. This guide walks through why traditional environments fail, what ephemeral environments actually are, the modern stack that powers them, and a concrete, code-level blueprint for building your first ephemeral testing pipeline.

https://medium.com/@shezakhanashraf/ephemeral-environments-automating-qa-for-reliable-cloud-native-systems-9c94035feaf6

An 8-minute outage from a dead NLB and a JVM that cached DNS forever

We drained a Network Load Balancer during a planned migration, and one internal service kept hammering the dead IPs for 8 minutes. The cause wasn't the failover. It was a JVM caching the DNS record forever. The fix was a 30-second TTL and a health-check tweak, not a smarter system.

https://dev.to/claire_nguyen/an-8-minute-outage-from-a-dead-nlb-and-a-jvm-that-cached-dns-forever-4dmj

Dagster on Kubernetes: When More Nodes Won't Save You

You've scaled up your Kubernetes cluster. EC2 instances are running. CPU and memory metrics look reasonable. And yet — the number of completed Dagster runs stubbornly refuses to climb. This article walks through the full diagnostic journey — from the obvious knobs to the hidden PostgreSQL bottleneck that probably nobody warns you about.

https://medium.com/@wojciech.szyba/dagster-on-kubernetes-when-more-nodes-wont-save-you-d591ba6669fd

OpenViking

OpenViking is an open-source context database for AI agents. It stores memories, resources, and skills as one virtual filesystem under the viking:// protocol, so an agent browses its own context with ls, tree, and find instead of querying a black-box vector store. Content is processed into three tiers — L0 abstract, L1 overview, L2 details — and loaded on demand. Every retrieval leaves a trajectory you can watch and debug.

https://github.com/volcengine/OpenViking

kern

A fast, rootless sandbox and virtual resource runtime for any workload, including untrusted and AI-generated code. Daemonless: a real, kernel-enforced container in ~3.5 ms from an OCI image, no daemon, one 1.52 MB static binary.

https://github.com/getkern/kern

picomq

PicoMQ is durable, real-time streams over HTTP, built on S3-compatible object storage.

https://github.com/picomq/picomq

skim

We spend so much of our time navigating through files, lines, and commands. That's where Skim comes in! It's a powerful fuzzy finder designed to make your workflow faster and more efficient.

https://github.com/skim-rs/skim

chatto

A fully-featured team and group chat application that you can easily selfhost.

https://github.com/chattocorp/chatto

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tig

Tig is an ncurses-based text-mode interface for git. It functions mainly as a Git repository browser, but can also assist in staging changes for commit at chunk level and act as a pager for output from various Git commands.

https://github.com/jonas/tig

codegraph

Pre-indexed code knowledge graph, auto syncs on code changes, for Claude Code, Codex, Gemini, Cursor, OpenCode, AntiGravity, Kiro, and Hermes Agent — fewer tokens, fewer tool calls, 100% local

https://github.com/colbymchenry/codegraph

vicinae

A focused launcher for your desktop - native, fast, extensible

https://github.com/vicinaehq/vicinae

spiderpool

Spiderpool is an underlay and RDMA network solution for the Kubernetes. It enhances the capabilities of Macvlan CNI, ipvlan CNI, SR-IOV CNI, fulfills various networking needs, and supports to run on bare metal, virtual machine, and public cloud environments. Spiderpool delivers exceptional network performance, particularly benefiting network I/O-intensive and low-latency applications like storage, middleware, and AI.

https://github.com/spidernet-io/spiderpool

workmux

Giga opinionated zero-friction workflow tool for managing git worktrees and tmux windows as isolated development environments. Perfect for running multiple AI agents in parallel without conflict.

https://github.com/raine/workmux

argo9s

A K9s-inspired terminal UI for monitoring Argo CD resources in real-time

https://github.com/vvrnv/argo9s