Operations | Monitoring | ITSM | DevOps | Cloud

If you've been working with Elasticsearch for a while, you’ll eventually run into a situation where you need to reindex your data. Maybe you’re changing mappings, upgrading versions, or restructuring your documents. That’s where the Elasticsearch Reindex API comes in. In this guide, we'll walk through everything you need to know about the Reindex API—what it is, how it works, common use cases, performance optimizations, and potential pitfalls. Let’s dive in.

We’re excited to introduce a new feature that gives you greater control over how and when you receive alerts from your website and ping monitors. With Alert sensitivity, you can now specify the number of retries before an alert is triggered, reducing false alarms and ensuring more reliable notifications.

As IT environments become more complex, larger, and inundated with data, DevOps teams encounter significant obstacles that make efficient operations more challenging. The heightened complexity can create difficulties in maintaining visibility and control across hybrid IT ecosystems. Additionally, the substantial volume of data generated can overwhelm resource-constrained DevOps teams, making it difficult to extract valuable insights and make informed decisions.

Entra ID is the new name for Azure Active Directory (Azure AD), Microsoft’s cloud-based identity and access management service. This rebranding, announced in July 2023, is part of Microsoft’s broader Entra product family, which focuses on securing access to digital resources and managing identities in a comprehensive way.

On February 25, 2025, at 11:32 AM EST, Martello’s Vantage DX monitoring began alerting on an issue affecting Microsoft Entra ID (Azure AD SSO). While Microsoft had not yet acknowledged the incident, online reddit forums had noted the issue and our Vantage DX proactive monitoring detected disruptions impacting authentication across multiple workloads. See here the critical warning for Exchange in Vantage DX Monitoring. Here is the critical warning for OneDrive and SharePoint in Vantage DX.

AWS NAT Gateways are essential for private subnet access but can quickly become a costly burden, even when idle. With Kentik, cloud and network engineers gain deep visibility into NAT Gateway traffic, allowing them to identify underutilized gateways, analyze high-cost usage, and explore cost-saving alternatives like VPC Endpoints, Internet Gateways, or direct peering.

Grafana’s extensibility has always been one of the keys to its success. It comes with a wide range of data sources that allow you to query your data no matter where it lives, visualizations to help you quickly make sense of that data, and apps that can provide complete observability solutions, all in a single package.

2024 was a huge year for Apache DataFusion, and 2025 is looking to be even bigger. The project officially became a top-level Apache Software Foundation project, achieved best-in-class performance for querying Parquet files in the ClickBench benchmark, and had a research paper accepted for SIGMOD.

Logstash is a powerful tool for ingesting, transforming, and shipping data from various sources. Visibility into Logstash is critical for optimizing performance and troubleshooting issues related to data ingestion. We’ve greatly improved the Logstash integration to display the status of your Logstash nodes and pipelines at a glance. The integration is now powered by Elastic Agent, which queries Logstash monitoring APIs for data that populates managed dashboards.