The Linux Audit framework is a kernel feature (paired with userspace tools) that can log system calls. For example, opening a file, killing a process or creating a network connection. These audit logs can be used to monitor systems for […]
Docker Log Driver Alternatives
“Why does the command ‘docker logs’ fail?“, is one of our frequently asked questions. The answer is simple and mentioned in the Docker documentation: “The docker logs command is not available for drivers other than json-file and journald.” Amazing as it sounds, it’s true. It is […]
Jaeger vs Zipkin – OpenTracing Distributed Tracers
In the previous three parts of our OpenTracing series, we provided an Overview of OpenTracing, explaining what OpenTracing is and does, how it works and what it aims to achieve, we looked at Zipkin – a popular open-source distributed tracer […]
Garbage Collection Settings for Elasticsearch Master Nodes
Elasticsearch comes with good out-of-the-box Garbage Collection settings. So good in fact that the Definitive Guide recommends not changing them. While we agree that most use-cases wouldn’t benefit from GC tuning, especially when it turns out there simply isn’t enough […]
OpenTracing: Jaeger as Distributed Tracer
In the previous two parts of OpenTracing series, we provided a good OpenTracing overview, explaining what OpenTracing is and does, how it works and what it aims to achieve and looked at Zipkin – a popular open-source distributed tracer. In this blog post, we will look at Jaeger, […]
GDPR: Top 5 Logging Best Practices
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 many GDPR fora. For example, IP addresses or cookies might […]
OpenTracing: Zipkin as Distributed Tracer
In part one of the OpenTracing blog series we provided a good OpenTracing overview, explaining what OpenTracing is and does, how it works and what it aims to achieve. One of the key aspects of OpenTracing is that it is vendor neutral, and […]
OpenTracing: Distributed Tracing’s Emerging Industry Standard
What was traditionally known as just Monitoring has clearly been going through a renaissance over the last few years. The industry as a whole is finally moving away from having Monitoring and Logging silos – something we’ve been doing and “preaching” for […]
Top 10 Engineering Changes in 2017
2017 was a good year for Sematext in many ways. On the engineering side of the organization, we’ve made a number of changes that had a positive impact and paved the way for a more productive 2018. The following is […]