Red Hat Enterprise Linux (RHEL) Reviews

We use the product to host operating systems, applications, or infrastructure for our customers. Our customers use the product as a long-term solution that they don't have to upgrade every other year. They can get people that know the solution from the get-go.

The biggest feature is the longevity of the distribution. Compared to any other product, Red Hat Enterprise Linux provides a stable backported solution for a long time. It is important because we have moved a lot of software containers. We want to update it but don't want to unless we have to. So it's great to have something stable for a long time.

The biggest thing that the solution could introduce is an even slimmer version of Red Hat Enterprise Linux. We are moving to containers, but we also have a lot of void loads that don't go into containers. It would be nice to have an even thinner operating system. Even if you choose minimally, you still get a lot of useless stuff you don't need.

I have been using the solution for 20 years.

I rate the product’s stability a nine out of ten.

I rate the solution’s scalability a seven out of ten.

It's really difficult to get to someone that knows something. When you get to the right people, support is really good. But there are a lot of people that can only answer first-level questions.

Neutral

We're using a lot of different OSs. We use Red Hat Enterprise Linux because we are a partner.

It's pretty simple to install the product. However, some tools required to install it are missing.

The pricing is great for virtual systems. The pricing for physical systems is way too high.

The overall costs depend on the project and the company.

We continuously evaluate other options. The main difference between Red Hat Enterprise Linux and other solutions is the complete ecosystem's longevity and possibility. Other products may present something similar, but they don't have the ecosystem around them.

We probably purchased the solution from a cloud provider. We are using versions 5 to 9 currently.

The solution’s built-in security features are pretty good, but it's not something that I would take as a major selling point. The portability is good because we have a stable baseline for applications and containers. Red Hat Enterprise Linux’s security posture is pretty good. I don’t know if it's the strongest selling point, but it's up there.

In some ways, Red Hat Enterprise Linux enables us to centralize development. However, that's not mostly what we focus on. The primary output from Red Hat Insights is targeted guidance. Targeted guidance has not affected our uptime much.

It makes sense to go with a stable distribution compared to others. Overall, I rate the product an eight out of ten.

We use it to host applications, services, and backend databases. We aren't using it on the cloud. Most of my customers are DoD or some type of government agency. If it's not classified, it's siloed in some way. We don't get to use a lot of the functionality that makes Red Hat cool. It's all disconnected.

In terms of version, currently, mostly everything is on versions 7 and 8. I've started pulling up some of the things from version 9, but that won't go into production for a while.

We use it because it's stable. That's half the reason, and the other half is because the DoD standardizes on it because it has a support contract, so even though we're forced to use it, it's a very good product, and it's on-prem. We probably would use it anyway.

We needed to host applications, services, and backend databases. We have a lot of Java-based applications, and we wanted something that we could deploy in different places around the world and that everybody standardized. Windows didn't really work for us on that. Most of the time, we're not connected to the Internet. We find that Red Hat or Linux in general works a little bit better for us than macOS or Windows.

It's also across the board a little bit cheaper for what we're using it for. That's a benefit we're getting from it.

We get our compliance from DISA, which is the defense information service agency. They put out security technical implementation guides. There are specific ones for Red Hat Enterprise Linux 7 and 8. The reason we're not using Red Hat Enterprise Linux 9 is that there isn't one for it yet. In terms of how we harden the operating system we're using, it's whatever they tell us to do and then whatever extra we want to do. It's as good as any other Linux other than the fact that it's supported by the DoD. For example, SELinux helps us secure across the board with contacts across different directories and things like that. They tell us how standardized the SD-WAN layout should be. We're able to go a little bit deeper into that. Red Hat uses Podman, which has SELinux, and which by default helps us a lot. 

We run Satellite on a lot of these, so having a central repository that we can use for patch management and remote execution is huge. That's something that is very difficult in a Windows environment. We're very compliance driven, so to have that built into Red Hat is easy. We don't need an agent or anything like that to get a lot of work done, so Satellite and centralized automation are the most valuable features for us. We're dabbling into Ansible but not as much as we should be.

It's obviously a security-focused operating system versus some of the other operating systems that lay you down in the terminal as root. In Red Hat Enterprise Linux 9, you can't even root. It's disabled by default now. Overall, they are definitely more security conscious, and that's also because of their primary customer space.

I've been using it for ten years or so. I've been using the solution since version 6. 

The stability of what we have deployed is good. The only time it crashes is if we do something or we try to configure a control that one of the engineers doesn't fully understand, which then breaks it. A lot of it's just like us breaking it ourselves or a customer asking for something that wasn't initially planned. Just pure deployment is good.

Its scalability is good. It's what they excel at. If we have 10 machines or 100 machines, they have the platforms to scale that up.

Overall, the customer support is good. It's better than Microsoft support. They are above and beyond that. They are better than others in terms of response time, getting somebody who knows what they're talking about, and not spinning their wheel. Usually, within the first response or two, people figure out what we're trying to troubleshoot here. We're not going from one queue to another queue or anything like that.

I'd rate them a ten out of ten. I've never had an issue with it. 

Positive

We had CentOS systems. When they changed upstream, we had to pivot some systems. We pivot some systems to Oracle Enterprise Linux, but then those eventually got transitioned to Red Hat as well.

The main reason for the switch to Red Hat was for the government customer and having a support contract. You can do Oracle Enterprise Linux without a support contract, but if you're going to buy one, you might as well get Red Hat at that point for the added benefits.

We use Kali for a couple of other use cases, and we probably won't replace it with Red Hat.

We've used a lot of flavors of Linux. One thing that sticks out for me, even in just the home lab environment or deploying at work, is that if there's some backward thing that we weren't planning on going into, if I look for a solution, nine out of ten times, I'm going to find an article on Red Hat's website where somebody has either a verified solution or somebody is talking about it and there are comments that are relevant. I hate going on ServerStack, Ubuntu Stack, or something like that, where somebody has the exact problem that you have, but there are no comments and no answers. I find that to be less true with the Red Hat platform.

The initial setup is pretty straightforward but can be tedious at times because of the compliance things that we have to implement. 

I just sat in on the training or the demo for the deployment platform, and we're already planning on setting up the Ansible automation platform where we also want to look into setting up this deployment tool because we do a lot of ISOs. We do a lot of kickstarts. We don't do any of the cloud tenants. We probably will switch to using the on-premise disconnected deployment capability because we can preconfigure everything and then run Ansible after the fact to get it all compliant.

We're the integrators or implementors of the solution.

We're forced to buy the licensing, but it's also good. I and a couple of other staff members are all Red Hat certified engineers, and then we all have our own specialties, so we don't call them a lot, but when we submit tickets, it's definitely worth it.

The ROI is mainly in terms of needing to recover from any system downtime. If we don't have an engineer on a computer doing a certain piece of research, then we're wasting money or just not generating a product, so to have the support that we can call and then reach out to us in enough turnaround time holds value for us.

The pricing is fair. The workstation licensing cost is fair. If you're running enterprise-level deployments, depending on what you're using, the volume licensing is good. I personally am worried that if they get so successful, they can increase the price, and then it won't matter because we'll be stuck on them. Hopefully, their open source mentality keeps that from happening. Where it's right now is good.

In terms of the portability of applications and containers built on Red Hat Enterprise Linux, I don't know how much that applies to us. In our case, someone develops an application in a Podman container, and we ingest that and run it, but we're not doing much more than that. So, all of the Java-based applications that we run, are run within a couple of different containers, and that's about it.

I personally use Red Hat Insights in my home lab. We can't dial out for that for a lot of customer-based work, but I personally use it. It hasn't helped avoid any emergencies because it's super low risk for what I'm using it for, but I can see the benefit of it. In a more enterprise setup, such as health care where I used to work, things probably would have been interconnected, and we would have been using Insights, but we're not using it currently.

Overall, I'd rate Red Hat Enterprise Linux a 10 out of 10. 

We run various application servers. We have application servers for Java and Python. We also run Postgres and different applications. We have Kubernetes, Docker, Docker Swarm, etc. We have a wide variety. 

We weren't trying to solve a particular problem by implementing Red Hat Enterprise Linux. We've used Red Hat Enterprise Linux for so long. We used to modify the Kernel in the early versions of Red Hat, but that's not needed anymore. We are currently using versions 7, 8, and 9. 

Red Hat Enterprise Linux has enabled us to centralize development in our hybrid cloud environment because the containers can be migrated from Red Hat Enterprise Linux to AWS. It's not an issue. There is also a Red Hat-supported programming tool called Skupper, which is a layer seven service. It's an open source product. It's supported by Red Hat, so we could use that to migrate our containers back and forth on the cloud and on-prem, which is very much needed.

Red Hat is pretty good at containing risks. We have a firewall, but we also use iptables and SELinux. SELinux has proved to be very valuable. We have certain tools where when somebody tries to break SELinux, we immediately get alerts.

We don't have a problem with compliance. We also use Red Hat Satellite. Our Red Hat Satellite server is helpful in terms of meeting compliance requirements.

We're able to modify and migrate containers and redeploy containers very easily. We do that on the Red Hat platform. We do it with other tools such as VMware. Red Hat API works very well with other vendors, so that's definitely a plus. In terms of changes, for instance, if we want to connect to ServiceNow to create a ticket in Ansible, we're able to do that without any problems whatsoever. We can create a ticket in ServiceNow. We can remediate it, and we can close the ticket on ServiceNow from Ansible. Ansible is a big part of Red Hat.

It's a rock-solid operating system. We don't need anything fancy from the operating system itself. What we need is something that doesn't crash, stays up to date, and provides the security features that we need to keep external players out.

The CVEs that come out for the vulnerabilities are very fast. We try to do patching in different tiers. Our regular patching happens once every ninety days, and then we have special iterations that need to be done, and those are on demand, or if there's a high-security risk and it's absolutely immediate.

The other thing that we like about Red Hat is the support for open source. That for us is a slam dunk.

They should work more on container documentation. The only issue that we have is that Red Hat specifically promotes OpenStack, and we don't use OpenStack. It's good if you're using OpenStack, but if you're not using OpenStack, and you're using Docker or something else, it isn't that good. Having more support for non-OpenStack would be very helpful, but, of course, as part of their business, we don't expect it.

I've been working with Red Hat Enterprise Linux for many years.

It's very stable.

It scales very well. We have about a thousand servers, but we could scale to five thousand servers without a problem.

Their support is good overall. It's better than some of the other vendors. The staff is very friendly. The people I've met hear and discuss issues. We're very much interested in open source, so we use a lot of open source. The engineers have been extremely helpful. 

I'd rate them an eight out of ten. I'm not giving them a ten. Some of it has to do with the time cycle, and some of it has to do with different levels of quality with the support. You could get a junior support person, and obviously, that's going to be a very different experience.

The knowledge base offered by Red Hat is very good.

Positive

Our environment is hybrid. Most of our Red Hat Enterprise Linux is on-prem. For the cloud, AWS is the cloud provider, but we are using a different distro for AWS. We use AWS Linux for that. For on-prem servers, we're strictly using Red Hat Enterprise Linux. For desktops, we use Fedora.

The reason for using AWS Linux is that we only have AWS. If we use multi-cloud, for instance, if we use Azure and AWS clouds together, we would definitely need something other than AWS Linux. AWS Linux is very solid too, and our team likes it. We can download the AWS Linux version for on-premises too. I've done that. I tested it, but we're sticking with Red Hat Enterprise Linux.

In the server space, nothing comes close to Red Hat Enterprise Linux. I know that Ubuntu is making a big push, and some people have gone ahead and migrated to Ubuntu, but I think those are going to migrate back. There's just no comparability. They're different. They're like cousins. They're very similar in some ways, but they're very different things. You can install SELinux on Ubuntu, but why bother and why go through the whole configuration? Red Hat Enterprise Linux is more suitable for servers.

We use certain tools from HashiCorp, such as Packer, so deploying it is very simple. We have a script that runs every night, and it creates via the CI, goes up to GitLab, gets whatever it needs, such as parameters, and sends it to Packer. Packer grabs the ISO, and it creates a very specific, customized deployment. It's done with a couple of right clicks. That's it.

We've absolutely seen an ROI. It's in terms of reliability, stability, security, and usability. You name it. The use cases are out there.

The licensing structure is very convoluted. It's very confusing. We have a Satellite server, and we license it through the Satellite server, but if we didn't, we'd have to buy individual Red Hat licenses. That would be a nightmare to maintain in terms of renewing it every year and things like that. 

Overall, I'd rate Red Hat Enterprise Linux a nine out of ten.

Primarily, we use it for a couple of different servers. Some are doing data hosting, and some are doing network management-type functions.

We use it on-premises. We do not use it on the cloud. Because of government work, we're not cloud-based.

By implementing Red Hat Enterprise Linux, we were mainly looking for stability. By having a lot of open source solutions, we ran into problems where there were too many flavors and too many variables. We ran into issues with ISO and other things where this particular site was a one-off from this site, which was a one-off from this site, which was one-off from this site. That became a problem for making sure that we stick to a consistent level and patch to a consistent level across the board.

The portability of applications and containers built on Red Hat Enterprise Linux has been good. We do a lot of containerization and a lot of microservices. It has worked really well. It helped in keeping our organization agile. Our partners provided us with a lot of quick utilities and reuse of things. We can shut down a container and spin up a new container to introduce new capability quicker. 

The biggest feature that I have found valuable is stability. 

The way it lent itself to automation has been very invaluable for us. It makes the setups a lot more consistent and repeatable across the board. We're able to deploy the product quickly in a very consistent manner, which meets our timelines. A lot of what we do has very short spending dates, and they need a lot of product work.

It has been pretty good for us. I have no complaints as such. We just learned that we can get access to more support documents by going through the portal. I didn't know that. If it was something that was more known or advertised, that would have helped us to find out some of the information a little better.

I have been using Red Hat Enterprise Linux for about a couple of years.

It's a 10 out of 10 in terms of stability.

It's a 10 out of 10 in terms of scalability.

The customer service is good. There is a lot of support documentation out there for anything you're looking for.

Positive

We tried quite a few flavors of different things, but nothing provided the consistency that we are getting with Red Hat Enterprise Linux. We tried everything such as Ubuntu, Mint, etc.

Red Hat Enterprise Linux stood out for its consistency and stability. We had several different problems with drivers on Mint. There were so many different flavors. We had one developer who built everything on one, and then another developer built on another, and none of that was coming together. It was not meshing, so we finally went to a common platform with stability and supportability. It was a lot better. It has allowed the developers to focus more on their code rather than having to worry about fighting the underlying things, such as drivers aren't on this one, and that one is not working.

It was very straightforward. We've pushed in further to make our own ISOs, so we're making sure that everything is getting the same applications and everything is deployed across the board, and we are able to virtualize in some cases. It has been good.

You definitely get what you're paying for. From what we've seen, it has been great. It has also allowed virtualization and making their own ISOs. We're able to package all that up, and it has worked consistently and repeatability. We've written our own Bash scripts so that we can automatically deploy that and stick it as part of the build. We're saving a lot of time and getting to a common platform repeatedly.

Overall, I'd rate it a nine out of 10. There's always room for a little bit of improvement.

I work in the financial industry in Brazil and my first job was to use Linux.

We deploy Red Hat Enterprise Linux on-prem and in the cloud. Our cloud provider is AWS. 

We use Red Hat Enterprise Linux for web applications, including the JBoss data bridge. We also have some applications for prevention and risk. Red Hat Enterprise Linux is used for most of our applications in Brazil, so it is used for almost everything.

We run our workloads and applications on AWS.

There are many Linux-based operating systems. We wanted an operating system that was mature and reliable, and Red Hat Enterprise Linux was the best choice for us.

Red Hat Enterprise Linux is a highly resilient operating system. It has a strong XFS file system, kernel, and package build.

Migrating workloads between the cloud and our data center is easy. There are no problems.

The knowledge base offered by Red Hat Enterprise Linux helps a lot. It is very useful and has helped me to resolve the issue by looking at the documentation.

The integrity of our operational systems is very stable. Red Hat Enterprise Linux has a good file system type and good kernels. It does not crash for any reason. This makes it a very stable platform for me. It is the best solution for our needs.

There was a reduction in the amount of detail provided in backlog messages between Red Hat Enterprise Linux versions six and seven, compared to versions eight and nine. This makes it more difficult to troubleshoot errors in versions eight and nine, as users must dig deeper into the operating system to find the source of the problem. Versions six and seven provided more detailed error messages, which made it easier to identify and fix problems. Deploying applications using Red Hat Enterprise Linux versions six and seven was seamless. However, there is a chance that something could be broken when deploying with versions eight and nine, and we may not know it.

I have been using Red Hat Enterprise Linux since versions four and five.

Red Hat Enterprise Linux is extremely stable.

One of the reasons we adopted the Red Hat Enterprise Linux ecosystem is because of its ability to scale.

I have not had a good experience with Red Hat engineers. When we have an issue, it is very difficult to have it resolved in the first call. They always have to escalate the issue and involve multiple people. At a minimum, we have to escalate an issue three or four times before it is resolved. The support team in Brazil has helped me a lot because they work with me to resolve the problem, but if I have to open a ticket and follow the steps I never get proper service.

I give the technical support of Red Hat a zero out of ten.

Negative

The initial deployment is easy. I can deploy Red Hat Enterprise Linux myself using a base image within a few minutes both on-prem and in the cloud.

The implementation is completed in-house.

We purchased our license from Red Hat.

I give Red Hat Enterprise Linux an eight out of ten.

Cloud vendor lock-in is inevitable when we adopt the cloud. This is because once we adopt a cloud service, such as DynamoDB or AWS, we become dependent on that provider for support and maintenance. It is very difficult to work with multiple clouds 100 percent of the time, as this can lead to problems with failover and other issues in multiple cloud environments because the risk is high.

The Red Hat Enterprise Linux ecosystem is more attractive because we are not just buying an operating system. We are buying an ecosystem that helps, supports, and secures our platform. I believe this is the better option.

Applying patches in the new versions of Red Hat Enterprise Linux is more time-consuming than in Oracle Linux because Oracle Linux does not require legacy environments to be patched or changed through applications.

For someone looking for an open source cloud-based Linux OS instead of Red Hat Enterprise Linux, I recommend AWS Linux. It is a very stable version of Linux and does not require a subscription.

I use Red Hat Enterprise Linux for web application support, mainly OpenShift.

Azure is the cloud provider.

Red Hat Enterprise Linux is easier to manage because it can scale to a large amount and be managed across many platforms. This can lead to cost savings for our organization.

Red Hat Enterprise Linux has reduced the amount of management required on the Windows side.

Red Hat Enterprise Linux is extremely resilient because it is much more secure.

Red Hat Enterprise Linux's day-to-day functionality is very easy.

Red Hat Enterprise Linux has helped our organization save money by not requiring large-scale virtual machines, resources, or images.

OpenShift is the most valuable feature because it can be used to create applications on the fly.

The UI is not user-friendly and has room for improvement.

I have been using Red Hat Enterprise Linux for six years.

I am impressed with how extremely stable Red Hat Enterprise Linux is.

Red Hat Enterprise Linux's scalability is excellent.

Technical support is quick to respond, but sometimes tickets can get stuck in tier one for a while before they are escalated.

Positive

We previously used Windows but switched to Red Hat Enterprise Linux for cost savings.

The initial setup is straightforward. We can copy and paste any templates we need into the environment.

We have seen a return on our investment simply from receiving timely support when needed.

We purchased the Red Hat Enterprise Linux license via Azure and the vendor.

We evaluated CentOS but ultimately chose Red Hat Enterprise Linux because of the support.

I give Red Hat Enterprise Linux a nine out of ten.

When evaluating operating system options, keep in mind that Red Hat offers the best support.

We are part of the State Department and use the solution to achieve operational excellence and readiness for the cloud. We think about what the next 20 to 30 years of consular systems infrastructure might look like to build and design for the next 40 years. Not many other companies think beyond a decade. 

The solution was implemented in our environment in 2014. The initial mission is still the same but how we go about it is different. For now, the solution is more for application support and making sure we are following State mandates or executive orders. 

For example, one use case involved planning, designing the implementation, and executing a launch of online passport renewals.

Our environment is moving toward tools that provide automation to remove human error. These are tactical operations and use cases. We currently use SaaS, OpenShift, and Ansible to a limited degree.

We had many issues with staff turnover during COVID. Working from home and trying to maintain databases was not ideal. During this time, the solution would have been rated a five out of ten.

Sometimes, vendors provide the government or bigger organizations with band-aids but not solutions. Everything seems to be a problem so many fixes are provided. A fix for this or a fix for that is equivalent to putting a band-aid on a large cut which will not work. Vendors tend to look at the money game because larger companies are their bread and butter. There should be an appreciation for the needs of bigger organizations.

It took some time to get us in a good position with the solution. There is definitely some growth and appreciation. We are at a place now where we can grow our environment. Today, the solution is rated a seven out of ten.

The solution is useful for application support and automations. 

A completely new setup should not be required when upgrading to a new version of the solution. For example, moving from RHEL 7.7 to RHEL 9 requires us to go through every minor version upgrade as well as RHEL 8. We do not have the ability to patch as quickly as we would like, but there are pathways. We got on 6.8 this year and migrated to 6.11 where we are trying to work on the automation portions of deployment. Before, we had variations of versions 7.2, 7.3, and 7.5 in our environment. We have not yet been able to use the supported versions that we are accustomed to with our applications. We are now on 7.9.1 and are trying to implement the minor upgrade versions in our environment. We have not yet experienced a healthy environment or the joy of using RHEL because we keep encountering issues and problems.

There are issues when upgrading or integrating with previous applications or systems such as Satellite, vRA, SaaS, or OpenShift. This is extremely, extremely important because a lot of our infrastructure is on RHEL. We need to have someone onsite to adjudicate our infrastructure's most important applications, when we would rather be able to patch them in a timely manner without having the whole world assist us. 

The solution should be more user-friendly so we better understand how to scale. It is not that we shun professional services, but there is a major knowledge gap in our understanding of the solution. 

I have been using the solution for four years. 

With anything, when you nurture it things work. Now that we are finally on 7.9 and migrated 6.11 we are actively trying to automate. This puts us in a better and more stable position. 

We rely primarily on our contracting staff or professional services for support. We receive onsite support from account engineers who apply critical patches or troubleshoot code that is not cohesive. For the most part, turnaround time is moderate but certain legacy applications are harder to troubleshoot, so they take more time.

Technical support steps in for big issues and provides good help. For example, support assisted with decommissioning 6.2 and 6.5 because they were at end of life with no option for purchasing ongoing support. We had professional services and many different products, so technical support made an exception to help with migrations and that was appreciated. 

Technical support is rated a nine out of ten. 

Positive

I do not know the setup details. The solution was implemented in 2014 and I joined the team in 2018.

We are currently experiencing issues when upgrading or integrating with previous applications and are looking for solutions. We push out patches and look at Tower. We already tried Puppet and it integrates with Satellite, but we prefer to use home-grown products. 

Because we use Satellite, it would be nice if the automation portions come from Tower or others. We have explained this to an account manager but solutions are being presented to us from a sales perspective. For example, we are told that we should ramp up, get other applications, or purchase more licenses.  

Decommissioning is one of our biggest issues. We upgrade and spin it up, but then have problems decommissioning some applications so more user licenses are required. For example, we have an unused server but cannot remove the license because we are either unable to get assistance or do not know how to perform the action.

We used vRA with the solution but it did not work for us.

We also used CloudForm but are attempting without success to decommission because it was not a useful case.

It is important to ensure there is a level of training for implementation. You need to understand compliance for your organization to determine whether vendors can provide appropriate tools. 

Do not be afraid to ask questions once the solution is implemented in your environment to ensure you are where you need to be. 

Stay on top of version or patch releases to prevent bugs or security vulnerabilities to your ISSO or agency. 

I rate the solution a seven out of ten. 

I worked with different organizations. So, the use case varies from organization to organization. Right now, some of the teams are using it for applications like BI, and then there are a few others that are using it for Websphere, middleware, etc.

In terms of the version, most of them are on 7.9, but there are a few on 8.2 and 8.4 as well.

It enables us to achieve security compliance. Our security team is quite happy, especially in terms of patching up our servers, etc. It's compliant with our security requirements. With Windows updates, sometimes, there could be errors and the blue screen issue, and it could become hectic for the applications as well. Our security teams struggled a bit to update Windows, but when it comes to Linux, they are quite comfortable because they know that things will go smoothly.

I'm quite new to this organization, but I know that there has been improvement in terms of performance. We're using Red Hat Linux on Power Systems, which is quite different from the Intel platform. So, admins are much happier, and they are using it quite well now. Previously, we were using Windows for our applications, but now, we have made Linux mandatory for being open source and not bound to Windows. Things can be complicated on Windows. Especially when we're installing it, there are a lot of things, such as registries, but Linux is easier for admins. There is DVS as well.

When I worked in the banking sector, the most important part was user administration where you need to keep things under control for a specific user. The auditor usually looks for an agent or something like that, and it has been quite easy to manage things from that perspective. Things are more manageable now than in the past.

Windows operating system is used everywhere. You will find it everywhere, and every user is able to use Windows. If a user is using an operating system from the start, it becomes easier for them to use it when they come to a professional environment. That's an area in which I believe they need to put in extra effort, especially for the students. Currently, for their final projects, most students use Windows, and this is an area where Red Hat needs to put in an effort. They need to give some training to the students so that when they come to the professional environment, they're already used to it. It would then become easier for them to use it in a professional environment.

I'm also using IBM AIX, which supports a tool called Smitty. You just put Smitty, and you can do anything. At the backend, the command will run automatically. It is not exactly like a GUI, but you just give the input and it will give you the output. That is something that Red Hat should work on. That would be an added advantage with Red Hat.

It has been 12 or 13 years.

It is very stable.

We are mostly using VMware and Power Systems. Scalability-wise, they are always the best. We can upgrade to get all the resources on the fly. We never faced any issues. However, if you didn't add the required parameters on your profile on VMware or the Power System, then there is an issue, but that's not related to the OS. That's related to virtualization.

Application-wise, there are multiple teams that are using these systems. We have the database team, the middleware team, the MQ team, etc. There are also system admins. The system admins are the ones who are deploying it, but the owners of the system are different.

We have plans to increase its usage. Two years ago, we had only 60 or 70 servers of Red Hat, but now, we have 400 to 500 servers. Its usage is always increasing. After a year or two, we might end up with about 1000 servers.

We have contacted them a few times. We did ask the support team to get in when the cluster got stuck and let us know what's the issue and what's the solution. Whenever I have asked for support, they have provided the best support. I always count them as the best. We have never faced an issue with them. I would rate them a 10 out of 10.

Positive

We had Windows. The stability was the reason for switching to Red Hat. The stability of Windows varies, but Linux is quite stable now. That was the main part they were looking for.

We are very comfortable with using Linux. We have been using it for 10 to 15 years, and we can't switch to Windows. We can't use Windows even on our laptops. We are not used to using a mouse and GUI. The command prompt is much better for us.

We also use AIX because we have AIX infrastructure, but a few of the applications don't work on AIX, whereas they work with Red Hat Linux. That gives Linux an advantage. So, we use Linux on Power Systems, rather than AIX.

We have been working with different operating systems, and we also know most of the technical requirements, so it is easy for us. Usually, the OS installation takes a maximum of 25 minutes. If you are making extra file systems, such as for Oracle, it takes 10 to 15 minutes extra. A desktop or a single file system doesn't require much time. We already have scripts. We just run the scripts and everything is done by the scripts. Previously, it used to take two or three hours, but now, things have changed, and we're making life easier.

We deploy it ourselves. We don't ask other vendors to deploy it for us. In terms of maintenance, we have already been updating our maintenance contracts, especially the support contract. There are some old systems running in our environment, and we are in the process of upgrading those from version 6.9. We already have the required support.

There are four people on the team, but for Linux especially, there are only two people. We're easily managing 500 to 600 servers for Red Hat.

When you are running your infrastructure on this, you can always find some discounts with local support, etc. There are always some discounts to match your budget. It is definitely affordable. 

When it comes to virtualization, there are different factors. There is not only Red Hat. There is also IBM, VMware, etc. The third-party vendors always manage to come up with a good offer. Our company can't say no to that, and it works out fine.

We also have IBM AIX, and when you compare these two, there's a huge difference because IBM AIX's support is quite higher than Red Hat's.

To anyone interested in using Red Hat for the first time, I would definitely advise starting with the GUI because now, the GUI option is quite good, and you can do all the things. After that, you can slowly start moving to CMD. For learning, there are a lot of resources available online, such as YouTube and LinkedIn Learning, whereas Red Hat Academy is quite expensive.

The biggest lesson I have learned from using this solution is that when you're using the command line, you need to be extra careful. That's because when using the command line, a single slash can make a huge difference. That's what I learned at the start of my career.

I started with Red Hat Version 5. Now they have version 9, which I haven't used, but if I just consider the evolution from version 5 to 8, 8.2, or 8.4, there has been a huge difference because, at that time, people were scared of using Linux, but now, things are different. There has been a revolution in terms of OS. A lot of things are being changed, but in terms of the things that we do, for us, it is the same because we are doing system administration. As a system admin, there is nothing different for us. We are doing the same things again and again because the applications require the addition of storage.

There is also a change in terms of security features. If I compare the old versions with the new versions, in old versions, adding any exception in the host firewall was a real task, but now, things have either become smooth, or we have gotten used to it. Overall, for me, things have become easier. They are getting more and more secure, but with the vulnerabilities and the assessments that have been done, we need to keep updating. Now, everything has caught up with the latest security required in the market.

In our environment, we're using virtual servers. There are no physical ones. We are shifting to containers in my current organization. Most of the applications we are using are containerized, and it has been easy for us to manage those applications. However, we also require some in-built applications, and for that, a change in people's mindset is required. It's not about the OS; it's about the people who do the development. It is becoming a bit hard for them because they were using a different platform previously, and now, they need to move to the Linux platform. It is a little bit different for them.

Overall, I would rate it an eight out of ten. When comparing it with AIX, AIX is a bit easier in terms of use and it also has the Smitty tool.