Want to know what’s new with Nagios? This is the place to find information on some recent developments and events that are happening in the near future.
New “First Seen” alerting when a device joins your network, as part of the new super robust Device Inventory feature. This update also adds a new Audit Log, Ubuntu 26 support, and redesigns the Source Queries and Traceroute views for enhanced insight into your network data.
Maintenance! Fixed some bugs, updated components, cleaned up no-longer-used bits, and ended official support for Debian 11 and Ubuntu 20.04 builds.
Here's an update to NRPE that merges a number of community (thanks Doug Nazar!) contributions fixing bugs, and adding options and test coverage.
This version adds real-time alert integration with Nagios Fusion, along with a wide range of improvements, additions, and fixes that make NNA easier to use, more powerful, and better at displaying more types of data.
With the addition of the all-new ability to send real-time alert traffic to Nagios Fusion, Nagios Log Server 2026R2 is ready to take users to the next level of Nagios log monitoring.
Added roles for much more powerful permission controls, along with the new Wizard builder, an updated wizard page, in addition to various important security fixes, enhancements to the Neptune UI, and of course event forwarding to the new Fusion.
As the first release of the new Fusion, it includes an updated front end and all new back end, and it now supports event-based data collection from Nagios XI, Nagios Log Server, and Nagios Network Analyzer.
This is the last planned release of the old NLS backend. We fixed a number of bugs. Now is a great time to do migration planning to the new backend if you haven't already. Thanks for your support of these version of Nagios Log Server, we'll see you on the new one!
A new hotfix is available addressing a security vulnerability that affects Log Server versions 2024R2 through 2026R1.4.1.
This release brings important security and stability updates.
The most potentially impactful thing is that we are now shipping check_ncpa written in C, versus the old way written in Python. check_ncpa checks execute up to 10x faster in our checking, the ultimate impact is that customers should be able to run more check_ncpa checks on the same hardware. Existing checks will not be affected. New monitoring configured via a check_ncpa-based wizards will use the new C-based plugin. There is a migration script available from the support department if people want to migrate their checks to the faster plugin. We aren’t shipping that script with XI so that people don’t just run it without thinking through the consequences. Other than that, SSO for XI mobile is the “Added” that makes it a feature release. Lots of fixes, Debian 11 support is removed, and people will see that continue with the other products.
Debian 13 support! Dashboard improvements and additions! Many bug fixes!
Traceroute is back and better than ever! Users can now edit Suricata yaml in the NNA interface. Plus logging and database lookup changes increase system performance.
New XCP-ng hypervisor plugin and Wizard, added Proxy support to the Twilio Component, so many fixes and updates, including a new NDO3 and new Nagios Core. It's a chock-full changelog!
For migration, added alert history, dashboards and report, Logstash configs and many more. Added support for Enterprise Linux 10 variants. Fixed bugs, made improvements.
Added a new scheduled scans history page for Nmap and alerting on Traffic Profiles, along with numerous bug fixes. Key improvements include updates to Nmap charts, AD/LDAP functionality, and dashlets.
We made rotating NCPA community strings across large deployments of NCPA easier by adding a second community string called backup_community_string. Also, OpenSSL CVEs on Windows have been resolved with this build after Windows moved to latest Python.
New Network Switch and Router Wizard now makes monitoring network devices distributable with Nagios Mod-Gearman, new Nutanix Community Edition plugin and Wizard, added support for latest SNMP security, and a whole big list of fixes and updates all around.
In-app upgrades, Traffic Profiles, improved Suricata performance, and new dashboard import, export, and cloning features.
New Proxmox Wizard, a new generic Data Table dashlet type, more and better dashboard management options, plus lots and lots of fixes, updates, and removals.
Security! Updated TLS version support, and removal of old, out of date TLS versions. Updated python for the Linux builds resolves CVEs for OpenSSL.
RHEL packagers seem to have missed an important step with the latest package for InfluxDB, and it breaks the installation for Nagios Network Analyzer. We put in a work-around. Current users should not need to update as it only impacts new installations.
This build continues pushing feature parity with the previous Log Server interface, with dashboard workflow improvements and a round of fixes across migration, indexing, and upgrades.
The annual Nagios World Conference returns September 14–17 in St. Paul, MN. Expect technical sessions, hands-on workshops, and networking with the Nagios Community and team.
Nagios Network Analyzer 2026R1.1 adds InfluxDB to replace RRDTool for time series storage, a Remember Me login option, and expanded admin controls for user password management and authentication. Also includes fixes for Suricata alerting, Nmap scan display issues, and dashboard export formatting.
Our webinar covers Nagios Log Server, a centralized log management and server log analysis platform. Watch a live walkthrough of Windows and Linux log configuration, dashboards, reporting, alerting integrations, and an OpenSearch-based architecture overview with clustering recommendations.
Nagios XI 2026R1.2 includes critical security fixes for XSS, SQL injection, and MitM vulnerabilities, along with new Configuration Wizards for Red Hat OpenShift and an updated vSphere plugin. This release also brings significant Smart Dashboard improvements, expanded SSO group management, and dozens of bug fixes across wizards, reports, and performance graphs.
Log Server 2026R1.1 adds per-user control over default dashboard query templates and fixes Logstash failing to bind to privileged ports after an upgrade, along with styling fixes for long query template button names.
We recently updated our Core to XI migration roadmap. Check out the article for step-by-step guidance and all the resources available to help you make the move.
The latest release of the Nagios Cross-Platform Agent is now available.
A community hosted by Nagios Enterprises, featuring monthly meetups in the Twin Cities, Minnesota, including tech talks, workshops, and networking. Share experiences, solve challenges, and connect with the local tech community.
Network Analyzer 2026 is a ground-up rebuild featuring a brand-new UI in dark and light themes, built-in integrations with Suricata, Wireshark, and Nmap, per-user custom dashboards, and granular role-based access control.
We launched the Nagios Beta Program this November, offering select Nagios Community Members exclusive access to updates before release. Beta testers provide valuable feedback, shape new features, and help define the future of network monitoring.
Fusion 2026R1 introduces centralized user management, allowing admins to copy users across fused Nagios XI systems in just a few clicks. Also included is a new System Profile function for easier troubleshooting and support.
Completely redesigned user interface with improved navigation and search functionality. Browse thousands of community-created plugins, add-ons, and integrations, or share your own projects with the Nagios Community.
At the Nagios World Conference 2025, we recognized Nagios Partners, clients, and Community Members for their outstanding contributions: Robin Porter (A24), JJ Ashghar (IBM), Michael Medin (NSClient++), Sam Napier (Nagios Community Member), Eric Lloyd (EverWatch Global), and David Hughes (Vaisala).
Log Server 2026 introduces a brand-new Simple Search homepage, upgrades core components to OpenSearch 3.1.0 and Logstash 9.1.1, and adds per-user simple mode dashboards, column reordering in dashboard tables, and role assignment per cluster instance.
10-part video series covering what you need to know to monitor Windows environments in Nagios XI, from NSClient++ and NCPA to SNMP and Zabbix metrics.
New comprehensive documentation site replacing the legacy Nagios Support Knowledgebase. Complete guides for commercial solutions and open source projects with step-by-step tutorials, technical documentation, and best practices.
Nagios Mod-Gearman is launched as a new open-source add-on that brings extreme scalability and distributed monitoring capabilities to Nagios Core and Nagios XI. It leverages the proven Gearman distributed framework to offload and distribute active check processing across large IT environments.
Nagios Core 4.5.11 fixes event queue initialization order and resolves double-negative errors in template processing error messages.
