Kubernetes - Logging



Table of Contents

Slide 1: Introduction

Logging is a crucial component of any application stack. In Kubernetes, logging can help with troubleshooting, identifying and resolving issues. In this presentation, we'll cover logging techniques and logging architecture in Kubernetes.

Basic Logging Techniques

Basic logging techniques include writing logs to a file or sending logs to a syslog server. Writing logs to a file is the simplest technique and is often used in development environments. Sending logs to a syslog server is more scalable and reliable.

Containerization and Logging

In Kubernetes, containers are the building blocks of applications. Containers have their own logging mechanisms, such as stdout and stderr, that can be captured and stored in a centralized location. Kubernetes also provides a way to collect and store logs using the Kubernetes API.

Kubernetes Logging Architecture

Kubernetes uses a centralized logging architecture. Kubernetes components such as kubelet, kube-proxy, and the API server send logs to a centralized logging system. The centralized logging system can be a third-party tool or an internal logging solution built on top of Kubernetes.

Logging Components in Kubernetes

Kubernetes has several logging components that work together to collect, store, and analyze logs. Fluentd, Logstash, and Syslog-ng are popular logging agents that can be used with Kubernetes. Elasticsearch and Splunk are examples of popular logging backends that can be used to store logs.

Logging Using Fluentd

Fluentd is a popular logging agent that can be used with Kubernetes. Fluentd collects logs from various sources, including containers, and sends them to a backend system. Fluentd has a Kubernetes plugin that makes it easy to collect logs from Kubernetes components.

Logging Using Logstash

Logstash is another popular logging agent that can be used with Kubernetes. Logstash collects logs from various sources and sends them to a backend system. Logstash has a Kubernetes input plugin that makes it easy to collect logs from Kubernetes components.

Logging Using Syslog-ng

Syslog-ng is a logging agent that can be used with Kubernetes. Syslog-ng collects logs from various sources and sends them to a backend system. Syslog-ng has a Kubernetes log collector that makes it easy to collect logs from Kubernetes components.

Logging Backends

Elasticsearch and Splunk are popular logging backends that can be used to store logs. Elasticsearch is an open-source search and analytics engine that can be used to store and search logs. Splunk is a commercial log management tool that can be used to store, search, and analyze logs.

Conclusion

Logging is an essential component of any application stack. Kubernetes provides a centralized logging architecture that makes it easy to collect, store, and analyze logs. Fluentd, Logstash, and Syslog-ng are popular logging agents that can be used with Kubernetes, and Elasticsearch and Splunk are popular logging backends.