A curated list of amazingly awesome open source sysadmin resources.
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Awesome Sysadmin

A curated list of amazingly awesome open source sysadmin resources inspired by Awesome PHP

Backups

Backup software.

  • Amanda - Client-server model backup tool.
  • Bacula - Another Client-server model backup tool.
  • Backupninja - Lightweight, extensible meta-backup system.
  • Backuppc - Client-server model backup tool with file pooling scheme.
  • Burp - Network backup and restore program.
  • Duplicity - Encrypted bandwidth-efficient backup using the rsync algorithm.
  • Rsnapshot - Filesystem Snapshotting Utility.
  • SafeKeep - Centralized pull-based backup using rdiff-backup.
  • TarSnap - Secure backup service with an open-source client.
  • UrBackup - Another client-server backup system.
  • DREBS - AWS EBS backup script that supports strategies.

Cloning

Cloning software.

  • Clonezilla - Partition and disk imaging/cloning program.
  • Fog - Another computer cloning solution.
  • Redo Backup - Easy Backup, Recovery and Restore.

Cloud Computing

  • CloudStack - Cloud computing software for creating, managing, and deploying infrastructure cloud services.
  • Eucalyptus - Open source private cloud software with AWS compatibility.
  • OpenNebula - An user-driven cloud management platform for sysadmins and devops.
  • OpenStack - Open source software for building private and public clouds.
  • The Foreman - Foreman is a complete lifecycle management tool for physical and virtual servers. FOSS.
  • Cobbler - Cobbler is a Linux installation server that allows for rapid setup of network installation environments.
  • Mesos - Develop and run resource-efficient distributed systems.

Cloud Orchestration

  • Cloudify - Open source TOSCA-based cloud orchestration software platform written in Python and YAML.
  • Rundeck - Simple orchestration tool.
  • Salt - It's written in Python.

Cloud Storage

  • git-annex assistant - A synchronised folder on each of your OSX and Linux computers, Android devices, removable drives, NAS appliances, and cloud services.
  • ownCloud - Provides universal access to your files via the web, your computer or your mobile devices.
  • Seafile - Another Open Source Cloud Storage solution.
  • SparkleShare - Provides cloud storage and file synchronization services. By default, it uses Git as a storage backend.
  • Swift - A highly available, distributed, eventually consistent object/blob store.
  • Syncthing - Open Source system for private, encrypted and authenticated distrobution of data.

Collaborative Software

Collaborative software or groupware suites.

  • Citadel/UX - Collaboration suite (messaging and groupware) that is descended from the Citadel family of programs.
  • EGroupware - Groupware software written in PHP.
  • Kolab - Another groupware suite.
  • SOGo - Collaborative software server with a focus on simplicity and scalability.
  • Zimbra - Collaborative software suite, that includes an email server and web client.

Configuration Management Database

Configuration management database (CMDB) software.

  • i-doit - Open Source IT Documentation and CMDB.
  • iTop - A complete open source, ITIL, web based service management tool.
  • Ralph - Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.

Configuration Management

Configuration management tools.

  • Ansible - It's written in Python and manages the nodes over SSH.
  • CFEngine - Lightweight agent system. Configuration state is specified via a declarative language.
  • Chef - It's written in Ruby and Erlang and uses a pure-Ruby DSL.
  • Fabric - Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks.
  • Puppet - It's written in Ruby and uses Puppet's declarative language or a Ruby DSL.
  • Salt - It's written in Python.
  • Slaughter - It's written in Perl.

Continuous Integration & Continuous Deployment

Continuous integration/deployment software.

  • Buildbot - Python-based toolkit for continuous integration.
  • GitLab CI - Based off of ruby. They also provide GitLab, which manages git repositories.
  • Go - Open source agile build and release management software.
  • Jenkins - An extendable open source continuous integration server.
  • Vlad the Deployer - Deployment automation.

Distributed Filesystems

Network distributed filesystems.

  • Ceph - Distributed object store and file system.
  • DRBD - Disributed Replicated Block Device.
  • GlusterFS - Scale-out network-attached storage file system.
  • HDFS - Distributed, scalable, and portable file-system written in Java for the Hadoop framework.
  • Lustre - A type of parallel distributed file system, generally used for large-scale cluster computing.
  • MooseFS - Fault tolerant, network distributed file system.
  • OpenAFS - Distributed network file system with read-only replicas and multi-OS support.
  • TahoeLAFS - secure, decentralized, fault-tolerant, peer-to-peer distributed data store and distributed file system.
  • XtreemFS - XtreemFS is a fault-tolerant distributed file system for all storage needs.

DNS

DNS servers.

  • Bind - The most widely used name server software.
  • djbdns - A collection of DNS applications, including tinydns.
  • Knot - High performance authoritative-only DNS server.
  • NSD - Authoritative only, high performance, simple name server.
  • PowerDNS - DNS server with a variety of data storage back-ends and load balancing features.
  • Unbound - Validating, recursive, and caching DNS resolver.
  • Yadifa - Lightweight authoritative Name Server with DNSSEC capabilities powering the .eu top-level domain.

Hosting Control Panels

Web hosting control panels

  • Ajenti - Control panel for Linux and BSD.
  • Feathur - VPS Provisioning and Management Software.
  • ISPConfig - Hosting control panel for Linux.
  • VestaCP - Hosting panel for Linux but with Nginx.
  • Virtualmin - Control panel for Linux based on webmin.
  • ZPanel - Control panel for Linux, BSD, and Windows.

IMAP/POP3

IMAP/POP3 mail servers.

  • Courier IMAP/POP3 - Fast, scalable, enterprise IMAP and POP3 server.
  • Cyrus IMAP/POP3 - Intended to be run on sealed servers, where normal users are not permitted to log in.
  • Dovecot - IMAP and POP3 server written primarily with security in mind.
  • Qpopper - One of the oldest and most popular server implementations of POP3.

IT Asset Management

IT Assets Management software.

  • GLPI - Information Resource-Manager with an additional Administration Interface.
  • OCS Inventory NG - Enables users to inventory their IT assets.
  • Ralph - Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.
  • Snipe IT - Asset & license management software.

LDAP

LDAP servers.

Log Management

Log management tools: collect, parse, visualize ...

Monitoring

Monitoring software.

  • Cacti - Web-based network monitoring and graphing tool.
  • Cabot - Monitoring and alerts, similar to PagerDuty.
  • check_mk - Collection of extensions for Nagios.
  • Icinga - Fork of Nagios.
  • LibreNMS - fork of Observium.
  • Monit - Small Open Source utility for managing and monitoring Unix systems.
  • Munin - Networked resource monitoring tool.
  • Naemon - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.
  • Nagios - Computer system, network and infrastructure monitoring software application.
  • Observium - SNMP monitoring for servers and networking devices. Runs on linux.
  • OMD - The Open Monitoring Distribution.
  • Opsview - Based on Nagios 4, Opsview Core is ideal for small IT and test environments.
  • Riemann - Flexible and fast events processor allowing complex events/metrics analysis.
  • Sensu - Open source monitoring framework.
  • Shinken - Another monitoring framework.
  • Thruk - Multibackend monitoring webinterface with support for Naemon, Nagios, Icinga and Shinken.
  • Xymon - Network monitoring inspired by Big Brother.
  • Zabbix - Enterprise-class software for monitoring of networks and applications.
  • Zenoss - Application, server, and network management platform based on Zope.

Metric & Metric Collection

Metric gathering and display software.

  • Collectd - System statistic collection daemon.
  • Collectl - High precision system performance metrics collecting tool.
  • Dashing - Ruby gem that allows for rapid statistical dashboard development. An all HTML5 approach allows for big screen displays in data centers or conference rooms.
  • Diamond - Python based statistic collection daemon.
  • Grafana - A Graphite & InfluxDB Dashboard and Graph Editor.
  • Ganglia - High performance, scalable RRD based monitoring for grids and/or clusters of servers. Compatible with Graphite using a single collection process.
  • Graphite - Open source scaleable graphing server.
  • InfluxDB - Open source distributed time series database with no external dependencies.
  • OpenTSDB - Store and server massive amounts of time series data without losing granularity.
  • RRDtool - Open source industry standard, high performance data logging and graphing system for time series data.
  • Statsd - Application statistic listener.

Network Configuration Management

Network configuration management tools.

  • RANCID - Monitors network device's configurarion and maintain history of changes.
  • rConfig - Another network device configuration management tool.

Newsletters

Newsletter software.

  • DadaMail - Mailing List Manager, written in Perl.
  • phpList - Newsletter manager written in PHP.

NoSQL

NoSQL databases.

  • Column-Family
    • Apache HBase - Hadoop database, a distributed, big data store.
    • Cassandra - Distributed DBMS designed to handle large amounts of data across many servers.
  • Document Store
    • CouchDB - Ease of use, with multi-master replication document-oriented database system.
    • ElasticSearch - Java based database, popular with log aggregation, and email archiving projects.
    • MongoDB - Another document-oriented database system.
    • RavenDB - Document based database with ACID/Transactional features.
    • RethinkDB - Open source distributed document store database, focuses on JSON.
  • Graph
    • FlockDB - Twitter's distributed, fault-tolerant graph database.
    • Neo4j - Open source graph database.
  • Key-Value
    • LevelDB - Google's high performance key/value database.
    • Redis - Networked, in-memory, key-value data store with optional durability.
    • Riak - Another fault-tolerant key-value NoSQL database.

Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis

Packaging

  • fpm - Versatile multi format package creator.
  • omnibus-ruby - Full stack, cross distro packaging software (Ruby).
  • packman - Full stack, cross distro packaging software (Python).

Queuing

  • BeanstalkD - A simple, fast work queue.
  • RabbitMQ - Robust, fully featured, cross distro queuing system.
  • ZeroMQ - Lightweight queuing system.

RDBMS

Relational DBMS.

  • Firebird - True universal open source database.
  • Galera - Galera Cluster for MySQL is an easy-to-use high-availability solution with high system up-time, no data loss, and scalability for future growth.
  • MariaDB - Community-developed fork of the MySQL.
  • MySQL - Most popular RDBMS server.
  • Percona Server - Enhanced, drop-in MySQL replacement.
  • PostgreSQL - Object-relational database management system (ORDBMS).
  • PostgreSQL-XL - Scalable Open Source PostgreSQL-based database cluster.
  • SQLite - Library that implements a self-contained, serverless, zero-configuration, transactional SQL DBS.

SMTP

SMTP servers.

  • Exim - Message transfer agent (MTA) developed at the University of Cambridge.
  • Haraka - A high-performance, pluginable SMTP server written in JavaScript.
  • MailCatcher - Ruby gem that deploys a simply SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.
  • Maildrop - Open Source disposable email SMTP server, also useful for development.
  • OpenSMTPD - Secure SMTP server implementation from the OpenBSD project.
  • Postfix - Fast, easy to administer, and secure Sendmail replacement.
  • Qmail - Secure Sendmail replacement.
  • Sendmail - Message transfer agent (MTA).

Software Containers

Operating systemlevel virtualization.

  • Docker - Open platform for developers and sysadmins to build, ship, and run distributed applications.
  • OpenVZ - Container-based virtualization for Linux.

SSH

SSH tools.

  • autossh - Automatically respawn ssh session after network interruption.
  • Cluster SSH - Controls a number of xterm windows via a single graphical console.
  • Mosh - The mobile shell.
  • parallel-ssh - Provides parallel versions of OpenSSH and related tools.
  • SSH Power Tool - Execute commands and upload files to many servers simultaneously without using pre-shared keys.

Statistics

Analytics software.

  • Analog - The most popular logfile analyser in the world.
  • Piwik - Free and open source web analytics application.
  • Webalizer - Fast, free web server log file analysis program.

Ticketing systems

Web-based ticketing system.

  • Bugzilla - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.
  • Cerb - A group-based e-mail management project built with a commercial open source license.
  • Flyspray - Web-based bug tracking system written in PHP.
  • MantisBT - Another web-based bug tracking system.
  • osTicket - Open source support ticket system.
  • Otrs - A free and open-source trouble ticket system software package that a company, organization, or other entity can use to assign tickets to incoming queries and track further communications about them.
  • Request Tracker - Ticket-tracking system written in Perl.
  • TheBugGenie - Open source ticket system with extremely complete users rights granularity.

Troubleshooting

Troubleshooting Tools.

  • Sysdig - Capture system state and activity from a running Linux instance, then save, filter and analyze.

Project Management

Web-based project management and bug tracking systems.

Version control

Software versioning and revision control.

  • Fossil - Distributed version control with built-in wiki and bug tracking.
  • Git - Distributed revision control and source code management (SCM) with an emphasis on speed.
  • GNU Bazaar - Distributed revision control system sponsored by Canonical.
  • Mercurial - Another distributed revision control.
  • Subversion - Client-server revision control system.

Virtualization

Virtualization software.

  • Ganeti - Cluster virtual server management software tool built on top of KVM and Xen.
  • KVM - Linux kernel virtualization infrastructure.
  • oVirt - Manages virtual machines, storage and virtual networks.
  • Packer - A tool for creating identical machine images for multiple platforms from a single source configuration.
  • Vagrant - Tool for building complete development environments.
  • VirtualBox - Virtualization product from Oracle Corporation.
  • Xen - Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.

VPN

VPN software.

  • OpenVPN - Uses a custom security protocol that utilizes SSL/TLS for key exchange.
  • Pritunl - OpenVPN based solution. Easy to set up.
  • SoftEther - Multi-protocol software VPN with advanced features
  • sshuttle - Poor man's VPN.
  • strongSwan - Complete IPsec implementation for Linux.
  • tinc - Distributed p2p VPN.

XMPP

XMPP servers.

Webmails

Webmail applications.

  • RainLoop - Simple, modern & fast web-based IMAP client.
  • Roundcube - Browser-based IMAP client with an application-like user interface.

Web

Web servers.

  • Apache - Most popular web server.
  • Cherokee - Lightweight, high-performance web server/reverse proxy.
  • Lighttpd - Web server more optimized for speed-critical environments.
  • Nginx - Reverse proxy, load balancer, HTTP cache, and web server.
  • uWSGI - The uWSGI project aims at developing a full stack for building hosting services.

Web Performance

  • HAProxy - Software based load Balancing, SSL offloading and performance optimization, compression, and general web routing.
  • Varnish - HTTP based web application accelerator focusing on optimizing caching and compression.

Wikis

Wiki software.

  • DokuWiki - Simple to use and highly versatile wiki that doesn't require a database.
  • ikiwiki - A wiki compiler.
  • Mediawiki - Used to power Wikipedia.
  • MoinMoin - An advanced, easy to use and extensible WikiEngine with a large community of users.
  • TiddlyWiki - Complete interactive wiki in JavaScript.

Resources

Various resources, such as books, websites and articles, for improving your skills and knowledge.

Blogs

Books

Sysadmin related books.

Editors

Open source code editors.

  • Atom - A hackable text editor from Github.
  • Brackets - Open source code editor for web designers and front-end developers.
  • Eclipse - IDE written in Java with an extensible plug-in system.
  • Geany - GTK2 text editor.
  • GNU Emacs - An extensible, customizable text editor-and more.
  • Haroopad - Markdown editor with live preview.
  • jotgit - Git-backed real-time collaborative code editing.
  • Lime - Aims to provide an open source solution to Sublime Text
  • Vim - A highly configurable text editor built to enable efficient editing.

Repositories

Software package repositories.

  • Dotdeb - Repository with LAMP updated packages for Debian.
  • Remi - Repository with LAMP updated packages for RHEL/Centos/Fedora.

Websites

Useful sysadmin related websites.

  • Ops School - Comprehensive program that will help you learn to be an operations engineer.
  • Digital Ocean Tutorials - A surprisingly vast resource for getting the basics of certain applications, tools, or even systems administration topics. (Note: Digital Ocean pays authors for this content)

Contributing

Please see CONTRIBUTING for details.