Operations | Monitoring | ITSM | DevOps | Cloud

Set up the Prometheus Blackbox Exporter: install it, write HTTP, TCP, DNS and ICMP modules, relabel scrape targets, and alert on probe_success and SSL expiry. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

RAG pipeline observability guide: the spans, attributes and metrics to record for embedding, retrieval, reranking and generation, plus evals for bad answers. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Azure Functions monitoring guide: platform metrics by hosting plan, why executions go missing in Application Insights, OpenTelemetry setup and alerts. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

HAProxy monitoring guide: the stats page and socket, the built-in Prometheus exporter, the metrics that matter, why queue time averages mislead, and alerts. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Snowflake monitoring guide: ACCOUNT_USAGE views and their delay, the query and warehouse metrics that matter, idle credits, resource monitors and alerts. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

AWS EKS monitoring guide: free control plane metrics, control plane logs, node health, VPC CNI IP exhaustion, and which alerts to set first. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

GKE monitoring guide: what Google Kubernetes Engine collects by default, which metric packages to turn on, Autopilot limits, and the alerts to set. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

ClickHouse monitoring guide: the Prometheus endpoint, the system tables that explain slow queries, the Too many parts limits, replication lag and alerts. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Apache Spark monitoring guide: what the Spark UI shows, how to keep it after a job ends, finding skew and spill, Prometheus metrics, and alerts. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.

Multi-cloud monitoring guide: why the same metric differs across AWS, Azure and GCP, and how to normalize it with OpenTelemetry into one view. Sejal Pandey works on content and growth at Last9, writing about observability, reliability, and SRE practices.