SRE – Systems/Network

SRE – Systems and Network

Tips and tricks

  • PostgreSQL is an object-relational database management system (ORDBMS). It’s a free and open-source tool available under BSD licence. Thanks to some built-in functions, you can get several information regarding database and/or table size. You will find below the main and most used…

  • The problem ? Your system is running on Linux with multiple physical network interface cards (NIC) and each card has its own default gateway. By default, you can only set up a single default gateway on a system. In our…

  • Today, for network usage optimization purposes, a lot of videos are streamed and sent to the users as fragmented packets instead of one file. According to Adobe, F4F file is Flash MP4 Video Fragment created and used by Adobe Media…

  • If you want to install VMware Tools on ESXi for an Ubuntu Guest, there is two possibilities: Use the package provided on distribution (but can be not up-to-date and so not approved) Install directly from official sources provided in vSphere…

  • With a default configuration for your web2py application, you will notice that when you are launching an action, if this one is quite long to execute, you won’t be able to open a new tab to run another request on…

  • When you are working with web server in frontend (Apache in this example) and backend application servers (Tomcat here), you may wish to customize your error pages depending on the HTTP error code returned (either from the web server or…

  • The Linux Kernel is the operating system kernel. It is the core of the system and provide an interface between the hardware and the software layers. Most of Linux distributions are coming with a pre-compiled and ready-to-use kernel for most…

  • A hard drive disk is a device with limits (performance, lifetime, …) and a broken disk often leads to a data loss, and sometimes with a loss of data more or less important. In order to avoid that kind of…

  • When you’re running on a Linux System (or any Unix Operating System), it’s common to use a swap to complete and optimize the memory usage on the computer (especially for older ones). There are different ways to do that, you…

  • Sometimes, further to a problem, an automatic uninstall process of Chrome is not efficient. In that case, you will need to proceed with a manual uninstall. Here are the steps you can use to perform a safe reinstallation: Perform a…