Category Archives: Monitoring

Hardware, services and network monitoring systems

VictoriaMetrics: an overview and its use instead of Prometheus

11 June 2023
 

  I’ve heard a lot about VictoriaMetrics for a long time, and finally, it’s time to try it out. So, in a nutshell – VictoriaMetrics is “Prometheus on steroids” and is fully compatible with it – can use its configuration files, exporters, PromQL, etc. So for me who has always used Prometheus, the first question… Read More »

Prometheus: GitHub Exporter – creating own exporter for GitHub API

11 June 2023
 

  Recently, I got a new interesting task – to build a dashboard in Grafana that would display the status of our development process and its performance, that is, the efficiency of our DevOps processes. This is necessary because we are trying to build “true continuous deployment” so that the code automatically enters Production, and… Read More »

Loki: collecting logs from CloudWatch Logs using Lambda Promtail

20 May 2023
 

  Collecting logs in Grafana Loki with Kubernetes is very simple – we just launch Promtail in DaemonSet, configure it to read all data from /var/logs – and that’s it (in fact, we don’t specify anything at all – everything works out of the box from the Helm chart). But what about CloudWatch Logs? On my new… Read More »

Prometheus: running Pushgateway on Kubernetes with Helm and Terraform

28 April 2023
 

  We have a lot of AWS Lambda functions in the project, and developers want to be able to send metrics to our Prometheus to add their own alerts and graphs in Grafana. For this, the functions use the Prometheus library, which allows these metrics to be created (see Prometheus: Building a Custom Prometheus Exporter… Read More »

GitLab: monitoring – Prometheus, metrics, and Grafana dashboard

12 March 2023
 

 So, let’s continue our journey with migrating GitLab to Kubernetes. See previous parts: GitLab: Components, Architecture, Infrastructure, and Launching from the Helm Chart in Minikube GitLab: Helm chart of values, dependencies, and deployment in Kubernetes with AWS S3 GitLab: міграція даних з GitLab cloud та процес backup-restore у self-hosted версії в Kubernetes In general, everything is working,… Read More »

Grafana Loki: alerts from the Loki Ruler and labels from logs

12 March 2023
 

  For general information on Grafana Loki, see the Grafana Loki: architecture and running in Kubernetes with AWS S3 storage and boltdb-shipper. Among other services that make up Loki, there is a separate service called ruler that is responsible for working with alerts that can be generated directly from logs. The idea is very simple:… Read More »

Prometheus: Building a Custom Prometheus Exporter in Python

25 February 2023
 

  Prometheus has many ready-to-use exporters, but sometimes you may need to collect your own metrics. For this, Prometheus provides client libraries that we can use to generate metrics with the necessary labels. Such an exporter can be included directly in the code of your application, or it can be run as a separate service that will poll… Read More »

Kubernetes: Cluster Cost Monitoring – Kubernetes Resource Report and Kubecost

29 January 2023
 

  The very useful thing is to monitor how efficiently the cluster is being used, especially if applications are deployed by developers who do not delve into requests much and set inflated values ​​”in reserve”. A reserve, of course, is needed – but simply requesting resources is a bad idea. For example, you have a… Read More »

Grafana Loki: alerts from Ruler and labels from logs

7 January 2023
 

  For general information about Grafana Loki, see the Grafana Loki: architecture and running in Kubernetes with AWS S3 storage and boltdb-shipper post. Among other components of the Loki, there is a separate service called ruler that is responsible for working with alerts that can be generated directly from logs. The idea is very simple:… Read More »