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 »
We continue our engagement with GitLab and its deployment in Kubernetes. The first part – GitLab: Components, Architecture, Infrastructure, and Launching from the Helm Chart in Minikube, and now let’s get ready to deploy to AWS Elastic Kubernetes Service. What will we do and where: deploy to AWS from the Helm-chart, with some test env Kubernetes… Read More »
As GitLab recently changed the policy of providing free access, and now only 5 users will be available for the Free subscription, we decided to move to the self-hosted version. In general, they have interesting terms with the license: the price depends on the number of users, you can buy it for at least… Read More »
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 »
Kustomize is a configuration management tool for Kubernetes that allows you to use common sets of manifests that can be changed for each specific environment/cluster, and can be an alternative to (or complement) Helm templates. The general concept of Kustomize is “where, what, and how”: “where” is a base manifest, for example deployment.yaml “what” –… Read More »
This a translation of a post from 2013 with some edits, but still relevant for learning BASH. In fact, a function in bash is a regular variable, but with more features. The main use is when the same code needs to be used several times and/or in different related scripts. Declaring and calling a function The… Read More »
This a translation of a post from 2013 with some edits, but still relevant for learning BASH. Brief description of the difference in the Bash loop types: for– will perform an action as long as there are objects to perform (for example, reading a stream from a stdin, file, or function); while– will perform… Read More »
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 »
The last time I worked with Loki when it was still in Beta, and it looked much simpler then than it does now. In the new project, there is no logging system at all, and since we all love the Grafana stack, we also decided to use Loki for logging. Although to be honest,… Read More »