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Jan 21, 2020   |  By Nedim abi
eBPF has revolutionized the observability landscape in the Linux kernel. Throughout our previous blog post series, I covered the fundamental building blocks of the eBPF ecosystem, scratched the surface of XDP and showed how closely it cooperates with the eBPF infrastructure to introduce a fast-processing datapath in the networking stack. Nevertheless, eBPF is not exclusive to kernel-space tracing.
Jan 16, 2020   |  By Radu Gheorghe
If you’re running Solr and have to troubleshoot it (or maybe you just want a good overview!), then you’d probably want to collect logs, configs, maybe a snapshot of metrics and some system data, like top or netstat. We created a small tool for this exact task, creatively named solr-diagnostics. It’s been out there for almost two years, and we found it useful in our Solr consulting and production support engagements. So we thought it’s about time to spread the word.
Jan 16, 2020   |  By Stefan Thies
Monitoring systems help DevOps teams detect and solve performance issues faster. With Docker still on the rise, it’s important to get container monitoring right from the start. This is no easy feat. Monitoring Docker containers is very complex. Developing a strategy and building an appropriate monitoring system is not simple at all. In this post, we’re going to delve deep into what container monitoring is and why you need it.
Jan 16, 2020   |  By Stefan Thies
In Part 1 we’ve described what container monitoring is and why you need it. Because each container typically runs a single process, has its own environment, utilizes virtual networks, or has various methods of managing storage. Traditional monitoring solutions take metrics from each server and the applications they run. These servers and applications running on them are typically very static, with very long uptimes.
Jan 16, 2020   |  By Stefan Thies
Even though containers have been around for ages, it wasn’t until Docker showed up that containers really became widely adopted. Docker has made it easier, faster, and cheaper to deploy containerized applications. However, organizations that adopt container orchestration tools for application deployment face new maintenance challenges.
Nov 7, 2018   |  By Sematext
The Cloud Native movement and migration of applications to microservice architectures require general visibility and observability into software behavior. OpenTracing aims to offer a consistent, unified, and tracer-agnostic instrumentation API for a wide range of frameworks, platforms and programming languages.
Nov 7, 2018   |  By Sematext
If you manage Elasticsearch clusters you’ll find this cheat sheet created by Sematext Elasticsearch experts very handy. In it you will find a comprehensive list of copy-paste curl snippets for allocation, caches, segment merges, performance troubleshooting and quite a bit more. Enjoy and share!
Nov 1, 2018   |  By Sematext
This Elasticsearch Developer Cheat Sheet provides a comprehensive list of key Elasticsearch operations every developer needs – index creation, deletion, mapping manipulation, indexing API, ingestion API, querying, aggregations, document relations (nested and parent child) and more! Enjoy and share!
Nov 1, 2018   |  By Sematext
In this reference architecture document, you will find out about all key Docker metrics to watch. Following that, you will learn how to set up monitoring and logging for a Docker UCP cluster. Specifically, this e-book shows how to use Sematext Docker Agent to collect metrics, events and logs for all Docker hosts and containers. Enjoy and share!
Oct 1, 2018   |  By Sematext
This Solr / SolrCloud Metrics API Cheat Sheet shows you how to access all the new Solr metrics – Jetty Metrics, JVM Metrics, Solr Node Metrics, Core OS metrics, etc. Print it. Copy-paste from it. Use it when troubleshooting Solr performance issues. Enjoy and share!
Aug 27, 2019   |  By Sematext
A breakdown of Sematext Experience, an easy-to-use Real User Monitoring solution, adding to the Sematext Cloud observability toolbelt, which encompasses Log Management, Infrastructure Monitoring, Tracing and now, Real User Monitoring.
Apr 22, 2019   |  By Sematext
A user looking for “awesome smartphone 2018” is likely really after “+review:awesome +category:smartphone +release_date:2018”. A clever use of (e)dismax might get us pretty close to where we want, but it’s not real query understanding. There are other ways, of course, like training a model that will, based on the keyword, guess which field it’s looking into.
Dec 10, 2018   |  By Sematext
DockerCon, The #1 Container Industry Conference. Dec 3-5, 2018, Barcelona
Nov 15, 2018   |  By Sematext
Video explaining how to use Logsene for troubleshooting using logs.
Oct 17, 2018   |  By Sematext
Your software stack likely consists of web servers, search engines, queues, databases, etc. Each part of your stack emits its own metrics and logs. Depending on the size of your team and structure, different team members might have permissions to look at one set of data, but not the other. Some data is needed for troubleshooting and can be discarded after just a few days, while more important data might need to be kept for months for legal or capacity planning purposes.