I mainly use Nagios XI for critical UN, for example, if the CPU usage is very high.
Business Development Specialist at Popular Holdings Limited
Stable but complex to set up
Pros and Cons
- "Nagios XI is stable."
- "It can be quite difficult to know which drivers and agents to use when setting up."
What is our primary use case?
What needs improvement?
It can be quite difficult to know which drivers and agents to use when setting up.
For how long have I used the solution?
I've been using Nagios XI for around five years.
What do I think about the stability of the solution?
Nagios XI is stable.
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What do I think about the scalability of the solution?
Nagios XI isn't really good for scaling, in my experience.
How was the initial setup?
The initial setup is very complex, as there's no helpful manual and there are a lot of custom settings you have to learn.
What other advice do I have?
Learning to use Nagios XI is quite time-consuming, so you need patience to get the best out of it. I would rate Nagios XI six out of ten.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
IP/MPLS Engineer at a comms service provider with 1,001-5,000 employees
It's helpful for seeing where we're having problems with the network, but the display could be more intuitive
Pros and Cons
- "The installation is no problem. I've installed Nagios several times."
- "The way Nagios displays information isn't easy for a new user to understand. It's not intuitive enough. You need to read some tutorials or be trained to understand what it's displaying. Also, I think it needs more features to improve network visibility because there are some things you can't detect."
What is our primary use case?
We use Nagios XI for monitoring and seeing where we're having problems with the network.
What needs improvement?
The way Nagios displays information isn't easy for a new user to understand. It's not intuitive enough. You need to read some tutorials or be trained to understand what it's displaying. Also, I think it needs more features to improve network visibility because there are some things you can't detect.
For how long have I used the solution?
I've been using Nagios for more than five years.
What do I think about the stability of the solution?
Nagios is stable.
What do I think about the scalability of the solution?
Nagios has good scalability.
How was the initial setup?
The installation is no problem. I've installed Nagios several times.
What other advice do I have?
I rate Nagios XI six out of 10. It's one of several network monitoring systems we have, and it has some features we can't get from other platforms.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
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Nagios XI
June 2025

Learn what your peers think about Nagios XI. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
860,632 professionals have used our research since 2012.
R&D Support & Monitoring, IT Production at a tech vendor with 51-200 employees
Enables us to monitor servers but the visibility needs improvement
Pros and Cons
- "The features I've found the most useful are the plug-ins, the fact that you can connect almost everything to it. That's very useful."
- "There's room for improvement in the visibility, and in the ability to extract information. Stuff like this should be more simple."
What is our primary use case?
We primarily use this solution to monitor servers and services.
What is most valuable?
The features I've found the most useful are the plug-ins, the fact that you can connect almost everything to it. That's very useful.
What needs improvement?
There's room for improvement in the visibility, and in the ability to extract information. Stuff like this should be more simple. Going over the data and the information is complicated at the moment. The management of the commands is also a little complicated.
For how long have I used the solution?
I have been using this solution for about half a year.
What do I think about the stability of the solution?
It's stable.
How are customer service and technical support?
I haven't had any experience with technical support.
How was the initial setup?
The initial setup was straightforward.
What other advice do I have?
In regards to the interface, obviously it can always get even better but at the moment it's functional. It's a good tool. It's very easy to use, very straightforward, and I would recommend it. I would rate this solution a seven out of 10. I like it but of course, it could be better. The product detail should look better, and again, being able to find information on the search is not good enough. I think to change that would improve it very much.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Head of IT, Projects and Organization at a financial services firm with 10,001+ employees
Collects large amounts of data to monitor our network, switches, and firewall
Pros and Cons
- "An excellent solution that is easy and intuitive to implement."
- "They need more documentation for the plugins."
What is our primary use case?
We use the solution in order to collect large amounts of data to monitor our network, switches, and firewall.
How has it helped my organization?
It provides an easy and powerful solution to network monitoring so I can pay attention to other concerns.
What is most valuable?
The most valuable feature is the setup wizard. The wizard just asks you for simple details and automatically starts collecting logs. It will give you some hints to configure your login on remote devices.
What needs improvement?
For enterprise users, the product would be better if it came with dedicated plugins. It has an online store for plugins and additional features, but most of the plugins we have are mostly open source. These open source plugins do not have a lot of documentation. We have to try to figure out how to use them on our own. They have good documentation for their own products and because of that, we have details to easily use their product as they have a guide. There is no documentation on the plugin site. They need more documentation for the plugins.
Besides that, there's nothing more that I would add as the product covers my current needs. Maybe I would like a lower price. That is maybe a problem they could fix.
For how long have I used the solution?
We have been using the product for two years.
What do I think about the stability of the solution?
We have absolutely no problem with the stability of the solution. I have no problem with the system or the setup. I want to do more to master the system and harness its capability, but that is my limitation.
How are customer service and technical support?
Technical support is very good but is very expensive. It is becoming more and more expensive just like the upgrade. The incredibly high prices are a very bad move on their part. I know everything is got to go up but this seems too much at a time. They also have some requirements for the support licensing that is very complicated. You have to have a password and you pay for a limited number of calls. For the price they are selling it, It should be okay to call them anytime.
How was the initial setup?
The setup was very straightforward. We did not have to create a complicated strategy. We just installed the server and add the devices that were most urgent for me to monitor. I just added the devices and it was as simple as that.
What about the implementation team?
We implemented it on our own in a very short period of time.
What's my experience with pricing, setup cost, and licensing?
The license and support are very expensive. You pay separately for each and the licensing is a little complicated. With a company like Cisco which may be expensive, the support is included. This product costs more than even Cisco. The support is not as easy to contact.
Which other solutions did I evaluate?
It is hard not to consider other solutions now because of the advice of other CIOs and their experience with open source products that save them a lot of money. It may not always save time because they can be more difficult to use. That can be a trade-off.
What other advice do I have?
The price of the licensing is very high, even for a big company. There are good open source products in the market that we could use for free and other companies I know are using them because of the price. Mostly because of the price of the product and the cost of tech support, I would rate this an eight out of ten. The product itself is very good.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Network Engineer at a tech services company with 11-50 employees
Provides for better network visibility and identification of connection problems
Pros and Cons
- "The most valuable feature is its support for different types of devices, where it can use all of the equipment that you need."
- "I would like to see more customization in the network map because it is a bit tricky to use it."
What is our primary use case?
We use this solution for the monitoring of network devices in multiple areas. I use this solution on a daily basis, and the first thing that I do when I go into the workplace each morning is to check on all of the equipment.
How has it helped my organization?
This solution has improved our ability to determine the source of a connection failure in our network. Prior to using Nagios XI, we did not know whether the drop in service was a result of our system, or whether it was the fault of our service provider. Now, we are able to monitor the service provider's router and make that determination.
What is most valuable?
The most valuable feature is its support for different types of devices, where it can use all of the equipment that you need. You can find and change your speed in the network topology, and if something goes down then it will be noticed immediately.
What needs improvement?
I would like to see more customization in the network map because it is a bit tricky to use it.
First, when you click on one of the devices on the map, it shows you information about the equipment. Sometimes, there is information that I do not want to show. I would instead like to choose what is shown.
Next, I would like to have the ability to show only a subset of equipment on the network map. When you view it, all of the equipment that you have is there, every time. Sometimes, I would like to choose just a group of devices to view.
For how long have I used the solution?
Four months.
What do I think about the stability of the solution?
This is a stable solution. On a scale of one to ten, I would rate the stability a nine.
What do I think about the scalability of the solution?
The scalability is perfect. I can add as much equipment as I like.
How are customer service and technical support?
I have not needed to contact technical support. Everything installed easily and it works fine.
Which solution did I use previously and why did I switch?
We did not use another solution prior to this one.
How was the initial setup?
The initial setup is very straightforward.
The deployment took approximately one hour. The difficult part is configuring the equipment, such as setting up the IP addresses. Because I have more than fifty devices, it took me some time. The task is simple, albeit repetitive.
What's my experience with pricing, setup cost, and licensing?
The licensing fees for this solution are approximately $3,000 USD per year.
Which other solutions did I evaluate?
When I was researching solutions I read about Nagios XI, and it was rated as one of the best solutions. I tried it and I liked it, which is why it was selected.
What other advice do I have?
I would rate this solution an eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
NOC Manager/Network Administrator at a tech vendor with 1,001-5,000 employees
Has a single screen that provides a summary for hundreds of servers, but the user interface needs improvement
Pros and Cons
- "The most valuable feature is the dashboard, where I can have a single screen that provides a summary for hundreds of servers."
- "I would like a much easier GUI so that I can delete events and logs, which will free up a lot of space."
What is our primary use case?
This solution is being used to monitor hundreds of servers at startup. It checks disk usage, services, memory usage, and more.
How has it helped my organization?
It has improved the task of network monitoring.
What is most valuable?
The most valuable feature is the dashboard, where I can have a single screen that provides a summary for hundreds of servers. I get red and green indicators that help me to quickly check for and rectify problems.
What needs improvement?
When you monitor a lot of things it creates a lot of events and logs. I would like a much easier GUI so that I can delete events and logs, which will free up a lot of space. I would also like a better GUI for dashboard viewing.
A better interface would allow this solution to be used as a single point of monitoring.
When the database is in need of repair, perhaps due to corruption caused by an improper shutdown, then it should happen automatically, rather than having to run a command.
For how long have I used the solution?
Between seven and eight years.
What do I think about the stability of the solution?
The stability of this solution is quite good.
If the machine crashes and it goes down, without properly shutting down the virtual machine, then I get an error that requires the database to be repaired.
What do I think about the scalability of the solution?
There are four or five people that browse the dashboard.
How are customer service and technical support?
I dealt with technical support for a few months, but because I do not have a support contract I have not used it in several years. A support contract can be purchased separately.
If problems arise then you are able to fix things on your own. If you can't, then just leave it.
Which solution did I use previously and why did I switch?
I am also using KS-Soft Advanced HostMonitor, but only for monitoring the up or down status of the machines. It has a much better icon view of the dashboard. When our customer wants to look at their data center and see the status of all branches and all servers, it shows a much better, color-coded graphical form. I am in the process of purchasing additional licenses for HostMonitor so that I can have multiple dashboards running from a single machine.
I did not switch solutions, but I am always open to products that offer a better user interface.
How was the initial setup?
The initial setup for this solution is quite easy. I am running it on a VM platform.
The deployment happens over time as the environment changes, but the initial deployment took one or two days. For the server to monitor, you just have to set the SNMP and add it onto the Nagios platform. As more servers are added, you add them to the platform.
What about the implementation team?
We took care of the implementation in-house. One person is sufficient for deployment and maintenance.
What's my experience with pricing, setup cost, and licensing?
This solution is very expensive, at approximately $5,000 USD when I purchased it, which is why I haven't upgraded my version in several years.
What other advice do I have?
I am using the original version of the software that I purchased because I do not have a support contract. This means that I have not received support or updates in several years.
While this solution works, I think that it can be improved in terms of maintenance, support, and price.
I would rate this solution a six out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Assistant Director at unpa
Monitors all of the necessary statuses for our servers and provides email notification for errors
Pros and Cons
- "This is a very good solution and it is simple to use, for any company."
- "I would like to see support for notification via SMS."
What is our primary use case?
We use this solution for monitoring the status of our hard drives, as well as bandwidth utilization. Essentially, we monitor all of the necessary statuses for our servers.
What is most valuable?
This solution is very good for monitoring infrastructure. It is simply to use, and you can receive notifications by email.
What needs improvement?
This solution would be improved with the inclusion of additional services. Monitoring streaming services is an example of something that is not currently supported, so in order to handle this, I would have to write a script. Scripts like this should be included in the next version of the solution.
I would like to see support for notification via SMS.
For how long have I used the solution?
Eight years.
What do I think about the stability of the solution?
The solution is very stable, although sometimes we have had problems with the database in cases where we had a large number of roles and services. There have been cases of database corruption that had to be repaired.
What do I think about the scalability of the solution?
Scalability is very good, and I have no problem with it. The configuration is such that you can add hosts or monitoring services very easily.
We have four security administrators who use this system.
How are customer service and technical support?
I have not needed to contact technical support. There are webinars and other information available that I have made use of. If you have a problem then you can copy and paste the error into a search engine and find the solution easily.
Which solution did I use previously and why did I switch?
I have used other solutions from vendors such as McAfee, but Nagios XI is the best solution when compared with others.
How was the initial setup?
I feel that the initial setup is difficult for a beginner. You must be skilled at using the Linux operating system to install and start up the solution.
What about the implementation team?
I performed the installation myself, learning about it from a webinar that was available online.
Which other solutions did I evaluate?
I am in the process of testing a large number of solutions, and this is the best one.
What other advice do I have?
This is a very good solution and it is simple to use, for any company. It is also very stable and you can monitor a large number of services with no problem. You can also create many users and have them receive notification by email. It's very good.
I would rate this solution a ten out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Scalability of this solution can be done by several ways:
1. Using Nagios Fusion: You can install several instance of Nagios (XI or Core) and then you can add them to Fusion. Now you can see all the results of all instances in a single panel. You can use several Nagios Core without any payment and just buy this product from Nagios, now you can have a good UI include single panel for your monitoring systems. (This solution includes payment to Nagios for Fusion product)
2. Using Mod Gearman: You can install Mod Gearman module on your server an install Mod Gearman Workers on other servers as Worker (Poller) server. Now Nagios (XI or Core) can spread all the Host and service monitoring checks to Worker servers. This solution used to distribute the monitoring solution and suitable for large scale (more than 4K Hosts include their services). I'm using this solution now for more than 24K Hosts and 16 services for each host on a single instance of Nagios XI. (This Solution is free of charge)
3. Federated Monitoring: In this model, remote networks and their elements are monitored by dedicated Nagios servers. Each remote Nagios server may be managed by central NOC staff or by the client. Notifications, reports, and configuration is generally handled by each remote Nagios server. Now Remote Nagios servers can be configured to transfer check results (status information) back to a central Nagios XI server at the NOC. This allows NOC staff to have a birds-eye view of the entire network, and provides them with centralized reporting and optional notifications. This Solution is suitable for the infrastructure that located on several Geo locations and need to monitor from a central NOC. (This solution is free of charge)
IT CIO at Kimfay
Our pre-production testing and evaluation has gone well, but the installation is hectic
Pros and Cons
- "The most valuable feature is the monitoring of processes."
- "The interface could be more user-friendly."
What is our primary use case?
We are planning to use this solution for network server monitoring. We have had training for deployment on our end, but it is not yet in production use.
What is most valuable?
The most valuable feature is the monitoring of processes.
What needs improvement?
I think that the process of installing this solution can be improved because it is quite hectic.
The interface could be more user-friendly.
For how long have I used the solution?
We are still in pre-production.
What do I think about the stability of the solution?
I think that stability is quite good.
What do I think about the scalability of the solution?
We are still in the pre-production stage and have only two IT administrators using the solution. There will be six users once it moves to production.
How are customer service and technical support?
We have not been in contact with technical support.
Which solution did I use previously and why did I switch?
We are currently using Zabbix.
How was the initial setup?
The installation of this solution is a bit complex, and it requires that you are running it fully.
One of the issues that we experienced was getting the source to a computer where we could deploy it. That took some time.
What about the implementation team?
We are handling the implementation in-house. There are two of us who took care of the pre-production deployment and will continue with the implementation.
What's my experience with pricing, setup cost, and licensing?
We are using the free version of this solution.
Which other solutions did I evaluate?
We are testing out this solution in addition to Zabbix.
What other advice do I have?
We will soon be moving this solution into production. However, it is a bit complex and difficult for a first-time user.
I would rate this solution a seven out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

it_user1088403Head of IT, Projects and Organization at a financial services firm with 10,001+ employees
Real User
Hello...
Appreciate your review....
The Enterprise or probverdion will be valuable for your requirements.
Simple install (binaries available for one command install)
Improved GUI

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I've installed it in my cloud environments, unfortunately, I cannot render the GUI back to my Mac or Windows system. Definitely doesn't work for use with my Termux. Wouldn't consider it as enterprise-level software.