Technical articles covering Linux, DevOps, System Administration, Security, and more.
Nextcloud is an on premise Dropbox alternative. It's a very capable software with great features. When you look at the documentation, there is a great deal of information about installation. But if you are after a highly available cluster, documentation vanishes, and you get redirected to the paid support site.
To enable recording of conferences made with on-premise Jitsi meet installations, Jibri(JItsi BRoadcasting Infrastructure) is required. Jibri launches a chrome instance in a virtual framebuffer.
Nowadays, people often think hash cracking is about hardware power. Hash cracking is about processing information; it is about thinking about the keyspace and finding statistical patterns.
Jitsi is an open-source video conferencing solution. In the days of COVID19, there a lot of demand for such solutions. Organizations often need to secure their installation with LDAP authentication.
Opensource software-defined storage systems are becoming to be the next big thing. Instead of buying an expensive storage appliance, you can just put together a few bare-metal servers and stack them with disks and voila. You have a working enterprise-grade storage unit that you can scale as you wish.
After every clean anaconda based OS install, there is a single file under the /root/ , named anaconda-ks.cfg. Ever wondered what is that about? Kickstart is a config file format designed to automate the installation of an operating system with anaconda installer.
We often deal with appliances during our daily struggles. They provide a solution to a particular problem, and they come as a package. In the sense of administration, they usually offer management panels. You can't access the root account on these devices. Not being a superuser on a server I manage irritates us intensely. Having root means being able to operate the equipment after the warranty.
Pgpool-II is a middleware that resides between PostgreSQL servers and clients. It can handle connection pooling, replication, and load balancing. Specific procedures or functions used in SELECT statements can make write operations while reading, and pgpool load balancer needs to configured to deal with such functions.
One of the core philosophies lies behind the Unix operating system is "Everything is a file". This design provides a uniform interface for applications and users. This means everything in the system from processes, files, directories, sockets, pipes are represented by files. This ghost from the past still heavily affects the inner workings of the modern Linux distributions.
So, you installed Jitsi, and it works pretty fine. But you want to rebrand the system for your own company. Here is a quick and dirty guide for customization on docker-compose.
When using command-line tools in the scripts, interactive tools enjoy breaking the automation and asking for some information. Most of the interactive commands have non-interactive modes you can use. I recently discovered how to use default PostgreSQL client in such a way.
Since rsync is not supported by the google repository another method is needed. There are many tools for cloning the deb repositories with HTTP instead of rsync. Copying of an HTTP repository is done by indexing the files in the folders.
If you need to install the latest version of the BIND DNS server, you won't find it in your package repositories. You will need to compile it from the source and create a proper environment by hand.
If we were to ask a dozen senior system admins to check all their mission-critical systems, most of them would start with checking their DNS servers. Regardless of the size of the server farm, if the DNS fails, everything will go down in a matter of seconds. In this guide, we will start with the basics and explore the behaviors of the DNS system. This guide is about designing a highly available and secure DNS cluster to support millions of users. The guide includes related configuration parameters but does not include step-by-step instructions.
There are many tools you can find around the web if you want to recover files from an android device. There are also some play store options, even though downloading anything from the play store will only make more of the data unrecoverable. Some PC-based tools could recover from a single partition of your phone, yet they are pretty much blind against the other partitions of the phone.
Debricking Buffalo WBMR-HP-G300H
General Linux subjects are covered with excessive detail to build intuition. This tutorial aims to be an old school guide about the fundamentals of Linux with no assumption of prior knowledge.