today's howtos

posted by Roy Schestowitz on Mar 13, 2023

• What are Maven Profiles and How to Use Them

  Maven profiles are a way to define a set of configuration options for a Maven build. Profiles are used to specify different build configurations for different environments or situations. For example, you may have a development profile that uses a local database for testing and a production profile that uses a remote database.

• Czech translation of LibreOffice Base Guide – and more news

  Zdeněk Crhonek (aka “raal”) from the Czech LibreOffice community writes: The Czech team translated the LibreOffice Base Guide 7.3 – and it’s now available on the documentation page. Our team consists of three translators: Petr Kuběj, Radomír Strnad and Zdeněk Crhonek, along with localized screenshot maker Roman Toman, and Miloš Šrámek, who prepared machine translations.

• How to Use the gzip Command in Linux

  If you want to share multiple files, compressing them all into one is the best solution you can opt for.

• How to Install Puppet Master and Agent in RHEL-Based Systems

  Developed by Puppet Lans, Puppet is an open-source configuration management tool used for automating and centralizing the configuration of infrastructure such as servers just like Ansible and Chef. It helps the simple execution of repetitive tasks which would otherwise be cumbersome and time-consuming.

  Puppet adopts a client-server architecture and comprises the following salient aspects.

• Some bits on Linux NFS(v3) server filesystem IDs (and on filehandles)

  Based on a comment from Arnaud Gomes on yesterday's entry, the answer to where you can observe the fsid of existing NFS exports turns out to be /proc/net/nfsd/exports. Filesystems only show up here once someone actually mounts them, but when they do you'll get lines like this (on Ubuntu 22.04): [...]

• How to Install Kubernetes Cluster Using Kubespray

• Monitor Kubernetes cloud costs with open source tools

  Kubernetes is a powerful platform for managing dynamic containerized applications in the cloud, but it may be difficult to understand where costs are incurred. Managing the cost efficiency of Kubernetes resources can be a challenge. That's where OpenCost comes in. OpenCost is a cloud cost monitoring tool that integrates seamlessly with Kubernetes, allowing you to track your cloud spend in real-time so you can optimize your resources accordingly.

  OpenCost is an open source CNCF Sandbox project and specification for the real-time monitoring of cloud costs associated with Kubernetes deployments. The specification models current and historical Kubernetes cloud spend and resource allocation by service, deployment, namespace, labels, and much more. This data is essential for understanding and optimizing Kubernetes for both cost and performance from the applications down through the infrastructure.

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