logs

Log analysis and management tools have become essential in troubleshooting. With log analyzers you can extract meaningful data from logs to pinpoint the root cause of any app or system

Ever found yourself drowning in a sea of log data, struggling to make sense of the overwhelming noise? Or perhaps faced a major system breakdown, only to find that your

When it comes to centralizing logs to Elasticsearch, the first log shipper that comes to mind is Logstash. People hear about it even if it’s not clear what it does:

Monitoring the performance of an application is not a strange concept to most developers. At one point or another, we've all had to do some performance debugging of our own.

Whether you capture them for application security and compliance, production monitoring, performance monitoring, or troubleshooting, logs contain valuable information about the health of your apps. But it all comes down

When an application written for the Java Virtual Machine is running, it constantly creates new objects and puts them on the heap. Well, at least in the vast majority of

Keeping an eye on everything that could affect your customers is a key part of providing a service. In the tech world, this would mean monitoring anything from low-level performance

Log management stopped being a very simple operation quite some time ago. Long gone are the "good old days" when you could log into the machine, check the logs, and

For this Black Friday, Sematext wishes you: more products sold more traffic and exposure more logs :) Now seriously, applications tend to generate a lot more logs on Black Friday,

NGINX is one of the most widely used reverse proxy servers, web servers, and load balancers. It has capabilities like TLS offloading, can do health checks for backends, and offers

Every developer's worst nightmare is digging through a huge log file, trying to pinpoint problems. The troubleshooting most likely won't stop there. They'll have to follow the trail to multiple

All the applications that you're trying to execute require memory. It doesn't matter if the application was developed using assembly language. Or if you used a low-level programming language like

On December 9, 2021, a vulnerability was reported that could allow a system running Apache Log4j 2 version 2.14.1 or below to be compromised and allow an attacker to execute

Apache - the technology that powers the web. I'm not sure if that is correct, but I think that we wouldn't see the world wide web in its current shape

As developers, we would like our users to interact with applications that run smoothly and without issues. We want the libraries that we create to be widely adopted and successful.

Logging is a crucial part of the observability of your Java applications. Java logs combined with JVM metrics and traces give full observability into the application behavior and are invaluable

Troubleshooting issues in your applications can be a complicated task requiring visibility into various components. In the worst-case scenario, to understand what is happening and why it is happening you

When it comes to troubleshooting Java application performance, JVM metrics are no longer enough. To fully understand the environment you also need Java logs and traces. Today, we're going to

When it comes to troubleshooting application performance, the more information you have the better. Java logs combined with JVM metrics and traces give you full visibility into your Java applications.

Getting visibility into your application is crucial when running your code in production. What do we mean by visibility? Primarily things like application performance via metrics, application health, and availability,

Don't you hate it when you see an uncaughtException error pop up and crash your Node.js app? Yeah... I feel you. Can anything be worse? Oh yeah, sorry, unhandledRejection I

Let's say you get an alert that one or more queries is slow. Or that your users complain, whichever comes first 🙂  We've all been there… How do you find

Sematext Logs is a Log Management-as-a-service. Think of it as your own central location for logs in the cloud. If you prefer or need to keep logs in your own

Building SaaS products is hard. Making customers happy is even harder. I should know, I've built a start-up that failed! But, not everything is that bad. I learned a lot.

Making sense out of logs is not an easy task. Log management solutions gather and accept data from multiple sources. Those sources can have different log structures, providing a different

Logs are one of the most valuable assets when it comes to IT system management and monitoring. As they record every action that took place on your network, logs provide

TL;DR note: if you want the bzip2 -9 version of this post, scroll down to the very last section for some quick pointers. If you want to learn a bit

I'm sure you bumped into journald: it's what most distros use by default for system logging in Linux. Most applications running as a service will also log to the journal.

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

Kubernetes is gaining popularity every day. Using an Ingress controller is the preferred method of allowing external access to the services in a cluster. This makes ingress logs incredibly important

When managing cloud-native applications, it’s essential to have end-to-end visibility into what’s happening at any given time. This is especially true because of the distributed and dynamic nature of cloud-native

By Chris Riley What is the Elastic Stack? Elasticsearch, Logstash, and Kibana — the trio better known as Elastic Stack (or ELK, if you prefer a term that is now

Logagent is a modern, open-source, light-weight data shipper with out of the box and extensible log parsing, on-disk buffering, secure transport and bulk indexing to Elasticsearch and Sematext Cloud. Its

Unless you are using a very old version of Elasticsearch you’re able to define pipelines within Elasticsearch itself and have those pipelines process your data in the same way you’d

This recipe is similar to the previous rsyslog + Redis + Logstash one, except that we’ll use Kafka as a central buffer and connecting point instead of Redis. You’ll have

Here at Sematext we use Java and rely on Elasticsearch for our hosted ELK logging SaaS, a lot. We like them so much that we regularly share our logging experience

The rather broad definition of personal data in the GDPR requires paying special attention to log data. GDPR and personal data in web server logs is a popular topic in

When dealing with log centralization in your organization you have to start with something. Often times people start by collecting logs for the most crucial pieces of software, and frequently

Do you know what portion of your traffic comes from bots? Do you know which bots are good and which ones are bad? Do you know what the bad bots

Logsene, our hosted ELK stack now part of Sematext Cloud, exposes the Elasticsearch API. As a Logsene user you may or may not be aware of this.  If you have

Need to have your recent logs searchable for your DevOps team(s) to troubleshoot issues, but also need to archive old logs for compliance reasons?   Many organizations need that and

We’ve restructured the UI …. bigly :).   Everything you need can be quickly accessed via tabs on the left.  Account section is exposed, and Team-related functionality (invitations to apps

Unlike logs, which tend to be high volume, events are a little more infrequent, a little more special.  Events are things like alerts, or deploys, or builds, or…  Ultimately though,

One of the Sematext differentiators is that it’s not just a monitoring solution or just log management solution.  It’s monitoring AND log management in a single solution.  This single pane

Since we work with Elasticsearch and Solr on a daily basis and know so much about them we like helping others improve their knowledge of these technologies, not only through

In earlier posts, we explained how one can reindex data from one Elasticsearch cluster to another, or within the same Elasticsearch cluster, via tools like Logstash and rsyslog. The same

Use-case: you're using AWS VPC and want visibility over the connection to your VPC. Which IPs are allowed or denied connections to certain ports, how much traffic goes through each

This recipe shows how to send CloudTrail logs (which are .gz logs that AWS puts in a certain S3 bucket) to a Logsene application, but should apply to any kinds

In this presentation from Lucene/Solr Revolution 2015, Sematext engineers -- and Solr and centralized logging experts -- Radu Gheorghe and Rafal Kuć talk about searching and analyzing time-based data at

Fresh from the Velocity NYC conference is the latest presentation from Sematext engineers Rafal Kuć and Radu Gheorghe — “From zero to production hero: Log Analysis with Elasticsearch.” The talk

More than two years ago we posted a recipe on how to centralize syslog in Elasticsearch in order to search and analyze them with Kibana, all by using only rsyslog.

OK, so you want to hook up rsyslog with Logstash. If you don't remember why you want that, let me give you a few hints: Logstash can do lots of

Sometimes we just need to replay production queries - whether it's because we want a realistic load test for the new version of a product or because we want to

[Note: this post was written by Sematext engineer Marko Bonaći] In vino veritas, right?  During a recent team gathering in Kraków, Poland, and after several yummy bottles of țuică, vișinată,