Vibe monitoring with Last9 MCP: Ask your agent to fix production issues! Setup →
Last9 Last9

Blog

Stories, guides, and lessons from the world of observability

How to Get Logs from Docker Containers

How to Get Logs from Docker Containers

Learn how to access, filter, and monitor Docker container logs, plus tips for structured logging, rotation, and production-ready setups.

Preeti Dewani
Preeti Dewani
How Replicas Work in Kubernetes

How Replicas Work in Kubernetes

Understand how Kubernetes uses replicas to ensure your application stays available, handles traffic spikes, and recovers from pod failures automatically.

Faiz Shaikh
Faiz Shaikh
Improve Consistency Across Signals with OTel Semantic Conventions

Improve Consistency Across Signals with OTel Semantic Conventions

Correlate logs, metrics, and traces faster by using consistent field names and schemas with OpenTelemetry semantic conventions.

Anjali Udasi
Anjali Udasi
Prometheus Group By Label: Advanced Aggregation Techniques for Monitoring

Prometheus Group By Label: Advanced Aggregation Techniques for Monitoring

Know how to use group by in Prometheus for advanced metric aggregation, reduce noise, and improve observability across services.

Faiz Shaikh
Faiz Shaikh
Instrument LangChain and LangGraph Apps with OpenTelemetry

Instrument LangChain and LangGraph Apps with OpenTelemetry

Understand how to trace, monitor, and debug LangChain and LangGraph apps using OpenTelemetry, down to chains, tools, tokens, and state flows.

Anjali Udasi
Anjali Udasi
Docker Status Unhealthy: What It Means and How to Fix It

Docker Status Unhealthy: What It Means and How to Fix It

What Docker’s “unhealthy” status means, why it happens, and how to debug failing containers with clarity and control.

Faiz Shaikh
Faiz Shaikh
LangChain Observability: From Zero to Production in 10 Minutes

LangChain Observability: From Zero to Production in 10 Minutes

Add tracing, metrics, and cost visibility to your LangChain app in minutes using OpenTelemetry and LangSmith, no rewrites needed.

Anjali Udasi
Anjali Udasi
How to Run Elasticsearch on Kubernetes

How to Run Elasticsearch on Kubernetes

Understand how to deploy, scale, and manage Elasticsearch on Kubernetes with the right configs for storage, availability, and performance.

Anjali Udasi
Anjali Udasi
LangChain & LangGraph: The Frameworks Powering Production AI Agents

LangChain & LangGraph: The Frameworks Powering Production AI Agents

LangChain and LangGraph help build production-grade AI agents. Here's how they work, and why observability is key to running them reliably.

Anjali Udasi
Anjali Udasi