A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

Kubernetes is an open source orchestration system for Docker containers. It handles scheduling onto nodes in a compute cluster and actively manages workloads to ensure that their state matches the use…
HTTP or HTML mechanisms used for redirecting browsers to where the actual content is located
2295 questions
BIND is a free, open source software implementation of the Domain Name System (DNS) protocols. The name BIND stands for "Berkeley Internet Name Domain", because the software originated in the early 19…
HTTP stands for Hyper Text Transfer Protocol and is the protocol used to transfer information around the World Wide Web.
Apache Tomcat is an open source software implementation of the Java Servlet and JavaServer Pages technologies released under the Apache License version 2. The Tomcat project started at Sun Microsystem…
2233 questions
mod_rewrite is an Apache module that allows for server-side manipulation of requested URLs.
A process of proving that an entity (commonly a user or organization) is who they claim to be, or who they were previously identified as being. Authentication does not guarantee that particular entity…
2220 questions
IIS7 is the version of Microsoft's web server software released with Windows Server 2008.
2136 questions
DHCP stands for Dynamic Host Configuration Protocol and is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol.
PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites.
URL Rewriting maps an incoming URL to a modified URL, so that the request is processes as if the original request was made to the modified URL. This is often used to provide more search engine friendl…
Exchange 2010 was a Microsoft collaboration server product offering e-mail, calendar, and other functions. It was released to general availability on November 9, 2009, and reached End Of Life (EOL) on…
2104 questions
HAProxy is an open source, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawlin…
A device that connects two or more networks and is capable of forwarding data packets to a destination based on information contained within a packet and internal routing tables.
Synonym for: RAM - Acronym for: Random Access Memory, a type of computer data storage.
2026 questions
In computer networking, network address translation (NAT) is the process of modifying network address information in datagram (IP) packet headers while in transit across a traffic routing device for t…
2000 questions
A file system (or filesystem) is a means to organize data expected to be retained after a program terminates by providing procedures to store, retrieve and update data, as well as manage the available…
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliabilit…
Cron is a time-based job scheduler in Unix-like computer operating systems. Cron enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates.
Unix is a multitasking, multi-user computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs.
1951 questions
Primarily questions about disk storage, sometimes questions about application storage or cloud storage. Always questions about storing data.
1947 questions
Network File System (NFS) is a network file system protocol originally developed by Sun Micro systems in 1984, allowing a user on a client computer to access files over a network in a manner similar t…
Samba is a free software re-implementation, originally developed by Andrew Tridgell, of the SMB/CIFS networking protocol.
VPS is the acronym for `Virtual Private Server`. Hosting companies provide customers the ability to rent computing resources, which are used to create and run virtual machines that are controlled by …
1869 questions
WordPress is an open-source blogging & CMS platform. Questions about using WordPress, developing plugins and themes for WordPress, etc., may be welcome at our sister site wordpress.stackexchange.com
Programming language and runtime environment that allows compiled Java programs to run unchanged on most hardware and software platforms
1833 questions
A form of computer programming that — in the context of system administration — lends it self well to automating tasks.
A version of Microsoft's database server, released in August 2008. This is different than SQL Server 2008R2.
1806 questions
Puppet is a configuration management tool (Unix & Windows) with its own Domain Specific Language.
1794 questions
CentOS was an Linux distribution standing for "Community ENTerprise Operating System" based on "Red Hat Enterprise Linux" (RHEL). The "CentOS6" tag refers to versions 6.x of CentOS. CentOS 6 was relea…
1781 questions
Windows Server 2016 is a server Operating System from Microsoft, released in 2016, and end of life in January 2027.
1779 questions
Ansible is an open-source software platform for configuring and managing computers. It combines multi-node software deployment, ad-hoc task execution, and configuration management.
IPv6 is the successor to IPv4. Rather than 2^32 addresses (like IPv4), it has 2^128, which is 340,282,366,920,938,463,463,374,607,431,768,211,456 unique addresses (34 undecillion). IPv6 addressing is …
Python is a dynamically and strongly typed programming language that encourages readability.
The Apache HTTPd Server. When asking questions about virtualhosts, please include the output of the following command: "apache2ctl -S" (or "httpd -S" depending on your OS)
Computer hardware is the collection of physical elements that comprise a computer system.
1714 questions