Docker on CentOS is primarily used for application containerization in our organization. We create Docker images and conduct comprehensive testing through our users and application testers. In addition to testing, we use CentOS machines for DevOps tools, and we find that images of databases, Kubernetes, MySQL, Redis, and Apache are very convenient to use without needing to install them directly on Docker.

Recently, we were assigned a task to set up a Python Flask app, so we created a Docker image on our CentOS machine, which we have been using for the past year. Since the CentOS machine still had available resources, we utilized it and created a Dockerfile for a Python Flask app. We also created another image to use the MySQL database, and when we ran Docker compose up, it started working properly. We then handed over this machine and image to the application team for their further testing.

The most valuable feature of Docker on CentOS is that both CentOS and Docker are free and open source, so we do not need to pay any extra cost to run our testing on these resources. All Docker images are also free, and whenever we require any other image, we simply run the command docker run with the image name.

We do not need to install those packages on our system or download those other libraries on CentOS. We simply run those images and that is it. This approach is very helpful for us rather than downloading numerous pieces of software on our systems. Since Docker is mainly used for containerization of applications, it is very impactful for our application team. They do not need to use their legacy systems of installing language packages and then downloading those libraries.

Previously, it could happen that on one server, one application would work fine due to those libraries, while another application would not work because those libraries and functionalities were not available on those systems. This was a time-consuming process that both the application team and the operations team had to endure. Since the introduction of Docker, we simply run those Dockerfiles and download those images from the Docker repository itself, and we can run our production or testing smoothly.

Running on CentOS is an additional advantage because CentOS is completely free. Versions seven, eight, and nine are very robust and do not show many bugs. These are very stable systems, and stable systems provide great positivity to our organization. When we are working on a Python Flask application, we simply run the image, and we run the command docker run and it will fetch the image from the Docker repository, making it easy for us to use.

On another occasion, if we receive an application for Node.js and need to perform testing on it before it goes into production, we need to perform heavy testing from our team, our application team, the testing team, and then the UAT. We do not need to install those packages or software manually; instead, we download directly from the Docker images.

This approach is saving us cost and also saving us a significant amount of time. We do not need to maintain any repository server that holds all this software, and we do not need to copy or update those software packages day-to-day. This is saving us a lot of cost, a lot of time, and a lot of manual work.

I think more stability could be improved, and there could be much more community support. There is good community support for CentOS mainly, but I think there could be a dedicated community for Docker for those people who are using Docker on CentOS. It could be very helpful. Sometimes, legacy systems do not work because those images are not available. If there were community support specifically for Docker on CentOS, we could ask other people if they have those images or libraries available, which would help us or others trying to run or test their legacy systems on CentOS.

I rate this nine out of ten because I still think it is not perfect. Even though it is free and open source, it still needs some more robust features to compete with systems such as Red Hat or Ubuntu. Since we are not using Docker on CentOS for our production work, only for testing, if it could be more robust and scale its features, it could compete with Red Hat and Ubuntu, and then all of us could use Docker on CentOS for production too.

I have been using Docker on CentOS for over two years.

It is stable. We have been using Docker version seven through nine until today. We found a few issues sometimes, but they could relate to our application too. We are not entirely sure whether the issues are with Docker on CentOS or the application, but we would say that if the application is working today on Docker on CentOS version seven, it will continuously work on Docker on CentOS version seven unless we make any changes or migrate our application from Docker on CentOS version seven to Docker on CentOS version nine.

The scalability is good. We can simply add those resources to the system, and we have tried to scale our applications from ten users to one hundred. It works well, and we have not faced any issues with scalability.

Since it is open source, there is no dedicated customer support available for Docker on CentOS, but there is a community which is very handy and useful. We have asked many questions in the community and have received very good support from those people.

In my company, Docker was the first choice for containerization. We did not use any other containerization tools, and it works very well with Docker on CentOS, so we did not consider any changes.

The main advantage of Docker on CentOS is the money saved. We are not using any Red Hat or any Ubuntu or any Alpine Linux machine, which would cost us licensing or support. Docker on CentOS is completely free. That is the main factor I would mention. It has saved us the cost for the operating system. Fewer employees are needed because we are not maintaining any other repository server which contains all those images and software.

We used to download those software packages every month so that our application could test those packages. This is how we have saved cost on the repository servers and very few employees are needed just to maintain or test on these Docker on CentOS machines.

For the server side, we do not need to pay any cost. Earlier we were using Red Hat and Ubuntu, so we do not need to pay any cost for the image, for the licensing, or for the support. The cost has become very minimal, less than five percent since we started using Docker on CentOS. In terms of time, we are not downloading those software packages every month so that our application should run on the latest systems. This is how we have saved a repository server. We are not maintaining any repository server which contains all those images and software. The cost reduction is less than five percent, and for manual work, the number of resources has reduced from ten to three or four only since we have started using Docker on CentOS.

There is no cost associated with either Docker or Docker on CentOS. It is completely zero cost. There is no licensing needed for it, so we can use it as freeware on our on-premises systems. The only cost associated is our VMware. There is nothing cost-related with Docker or Docker on CentOS.

I would advise others looking into using Docker on CentOS that if they want to reduce costs and test their application without paying any additional amount, or if they think they can use a smaller version of their Linux system, then Docker on CentOS is the best choice. I rate this product nine out of ten.

All of our development is done with Docker on CentOS. In some cases, we also do the deployment for clients on staging and in maybe one or two cases even in production with Docker on CentOS, but mostly it is for development.

Docker on CentOS by itself has great features because the containers concept is already a great use case. Previously, each developer had their own PHP, own Symfony, own database, and then we had some issues with versions. When we deploy to clients, we might have again some such issues. The consistency that Docker on CentOS provides helps our workflow because it avoids developers having issues with versions of applications.

Regarding Symfony, we use many bundles, and not only Docker but also by mainly using things such as Git or Composer, we quite reduce this inconsistency with bundles. Putting everything in Docker helps a lot.

Regarding where I see the biggest gains with Docker on CentOS, it definitely eases the onboarding process because we can more quickly put people to just Git pull and Docker up, and they have a working environment. For issues, except inconsistency issues that we had at some point, we definitely gain here. For deployment, most of our customers have Docker on their environments, and it is easier as well. We have the same environment running everywhere.

Regarding how Docker on CentOS can be improved, I have not thought about this much. If I had to think of one thing that could make my experience with Docker on CentOS even better, I do not have any issues myself. When teams have any issues, I can help them with my experience with it. No specific issues come to my mind.

I have been using Docker on CentOS for about seven or eight years.

Docker on CentOS is quite stable and I have not encountered any issues until now, so for me it is stable.

If my projects or team grew, I think Docker on CentOS would handle more containers or more complex setups easily. I have read and gotten feedback that I did not see any issues regarding scalability. When we talk about scalability, it is not infinite, but for the types of projects we do, I think it is quite scalable.

The customer support for Docker on CentOS is something I have never needed; I always manage by myself.

We did not have any alternate solution before using Docker on CentOS. I discovered Docker about seven or eight years back and really appreciated the idea and have stayed with it.

I choose a ten out of ten for Docker on CentOS because for me it is a tool that helps a lot and I did not have any issues with it. Docker on CentOS is deployed in our organization with no cloud deployment here. Each person has Docker installed on their development environment and we just share the Docker files through Git.

I have no additional thoughts about Docker on CentOS before we wrap up. I just hope that Docker continues as it is and always keeps up to date with new technologies so that we can use it for a few more years.

I have not measured the return on investment for Docker on CentOS, but if intuition counts, I would say ten percent time and energy saved. Regarding fewer employees needed, it does not reduce headcount. It only provides savings and allows us to produce better work.

Regarding my experience with pricing, setup cost, and licensing for Docker on CentOS, as far as I know it is free for small teams, so there are no issues with the pricing. The setup is very smooth as I think I master it or at minimum know it very well. There is no specific licensing on it either.

I did not evaluate other options before choosing Docker on CentOS. I just heard about Docker and tried it because I had already received interesting feedback and never tried any alternative.

Docker on CentOS has impacted our organization positively. I have not quantified how much it has helped us in terms of productivity or gains in avoiding issues, but I would estimate perhaps ten percent improvement. This is not a calculated figure but more of an intuitive assessment.

My advice for others looking into using Docker on CentOS is that if they have not tried it, I would encourage them to go try it. If when trying it they find issues, I would say there is quite a good community around it, so do not hesitate to reach out. Additionally, I would say that the most common AI tools such as ChatGPT and Gemini help a lot if needed. I gave this review a rating of ten out of ten.

My main use case for Docker on CentOS involves running containers, testing applications, and pulling out niche applications, older versions of applications or software, and then using those for testing.

A quick specific example of an application or scenario I have tested using Docker on CentOS is testing an old version of Ruby code inside a Docker container. For instance, a Rails application written on Ruby 2.7, when the Ruby version is now 3.something or four as well, I just pull out the Docker container and then run it.

I have additional insights about my main use case. Testing out older versions of applications and older versions of software is one aspect. Another aspect is running our development server, not a local server, but the development server. Then it goes to staging and production. I run the development server on Docker on CentOS containers.

The best features Docker on CentOS offers for me include volume mount, where I can mount a directory inside the container as a volume and then write it inside, and then I get the whole thing on the host as well. If I write it outside on the host, it gets inside. This is a really good feature.

The volume mount helps my workflow and productivity significantly. If I need to test something, I just mount the volume, mount my code as a volume, make changes, it appears inside, test it, and then I am done after testing.

Docker on CentOS has positively impacted my organization by making testing easier. I do not have to install older versions of applications and then make my system or service study. I just pull out a Docker container and then use it. This helps in saving time as well. When I run the whole thing in Docker Compose, that also helps in speeding things up. Once I have Docker Compose created, I just do Docker Compose up, and then everything works. This is mostly time-saving.

I believe everything is good, and there is no improvement needed for Docker on CentOS.

Regarding needed improvements, I think compatibility is already compatible with everything that is there. However, documentation could be improved. Documentation could be made more accessible, more readable, and all those things.

I have been using Docker on CentOS for almost six years or more.

Docker on CentOS is very stable.

Regarding scalability, it just scales depending on your machine configuration.

The customer support for Docker on CentOS is not really needed. Why would someone reach out for customer support for an open-source software that has lots of documentation and community support? No one would reach out to Docker for support for a simple thing.

I have not previously used a different solution. Docker was the first one and it is going to be the last one.

My experience with pricing, setup cost, and licensing is that there is no licensing cost required. The setup is just running a few commands that are already recorded or documented. Nothing much is involved.

I have not seen a return on investment since you install and use it. What return on investment is needed when using a simple tool? It is just there to use.

My experience with pricing, setup cost, and licensing is that there is no licensing cost required. The setup is just running a few commands that are already recorded or documented. Nothing much is involved.

Before choosing Docker on CentOS, I did not evaluate other options. I just chose Docker on CentOS.

I would add that those are the features I mentioned by default, so I have no comments on networking, images, or resource management.

My advice for others looking into using Docker on CentOS is just to install and use it. I give this review a rating of 9.

My main use case for Docker on CentOS is for a containerization platform, packaging applications with their dependencies for lightweight and portable containers.

A quick, specific example of how I use Docker on CentOS for containerization is that we have dockerized our frontend, backend, and database into containers, and we have hosted them using Docker on CentOS. We have multiple software images for availability and for application uptime, and it is lightweight.

The best features Docker on CentOS offers are its lightweight and fast nature, with containers sharing the OS kernel, making it faster than VMs and providing quick startup time. It also ensures a consistent environment where applications will work on every machine, not just the developer's machine, and offers resource efficiency, such as no full OS per application, allowing me to share my infrastructure with multiple containers and applications. Additionally, it provides easy deployment and scaling.

The most valuable features to me in my daily work are all of the following: lightweight nature, consistent environment, resource efficiency, and easy deployment. We do not need to worry about our source requiring more memory; it is lightweight and fast, and the deployment does not take much time. If we want to scale our infrastructure, we can just create a new Docker image and it will scale, so all of those features are important to us.

Docker on CentOS has positively impacted my organization because we do not need much resource per application, and our deployment time has decreased, allowing us to avoid using more VMs to host our applications. Regarding the decrease in deployment time, I am saving 30 to 40 percent of our time, and before Docker, we had been using 10 to 20 VMs, but after that, it has become half, approximately 10 or 11 VMs.

Docker on CentOS can be improved by addressing security concerns, such as sharing the kernel, which leads to weaker isolation than VMs. Sometimes misconfiguration can happen, such as using ports or other networking issues. Currently, as I have heard, Docker on CentOS is not officially supported, so I am considering whether there are alternatives or not.

I have been using Docker on CentOS for two years.

Docker on CentOS is stable, but as I mentioned, there are some improvements needed, and after that, I hope it will be good.

Docker on CentOS's scalability is good; if we need more resources, we can just spin up a new Docker image, so scalability is good.

I previously used VMs, but they were expensive, and it was an overhead for us to manage, so that is why we switched to Docker on CentOS.

After switching to Docker on CentOS from VMs, I have seen a return on investment, saving 40 to 50 percent of our money as well.

My experience with pricing, setup cost, and licensing is that there is no licensing in Docker on CentOS, and the setup is easy; we just need to create the images for our application, so it is easy.

Before choosing Docker on CentOS, I did not evaluate other options because we had a clear mindset that we wanted to use Docker on CentOS. We saw the public review, so that is why we thought we wanted to use Docker on CentOS only.

My advice to others looking into using Docker on CentOS is that if they want to containerize an application, make their deployment easy, avoid VM management overhead, and save costs, they can use Docker on CentOS. I would rate this product an 8 out of 10.

We have servers running operating systems like Ubuntu and CentOS. Regarding Ubuntu, we are interested in LAMP stack, Ubuntu, or Jenkins on hardened Ubuntu, but we are not using LAMP stack. We are using Ubuntu and then MySQL in a different way, but not LAMP stack. For CentOS, Docker is there, but we are using PostgreSQL, not MariaDB. Docker on CentOS is what we are using. It has been about six years since we started using Docker on CentOS. It is running one of our systems hosted there, on our document management system.

How fast the application runs is one of the biggest advantages for me in Docker, but on the downside, issues to do with space utilization arise sometimes. Since we implemented it, the system really improved and became responsive very fast. When you have limited space, the system tends to crash from time to time, so you have to ensure that you have enough space at any one point.

We are using the orchestration feature in Docker. That was the main motive for having orchestration; it helps better manage the containers.

I am comparing Docker on CentOS with the one that is running on Ubuntu, and in terms of scaling up, it is easy to work with when it comes to that. That is the main feature I have been benefiting from.

Because it was first, we recently did it on Ubuntu, but initially, it was running on CentOS. We were comparing and seeing which one runs better, but I realized on Ubuntu it is much easier to work with.

The lightweight architecture on CentOS affects my resource utilization significantly.

Crashes are the main issue I see. I have not really noted down specific metrics, but I realize that when it comes to disk space utilization, it really goes up so fast. We are not using a CI/CD pipeline in Docker. The main issue comes from running out of space; that is when crashes happen, and that is the only thing I have seen as an area for improvement in Docker.

I have been working as a customer with Docker mainly for around six years.

Mainly, the support we get is from online communities in case of any challenges, and there may be some people around who have more expertise in that area; that is how we have been managing. We have not gotten into a state where support is complex, but most things can be easily found as resources online to help resolve those issues.

It is quite complicated to install Docker on CentOS; it is not as easy as it is on Ubuntu.

Mainly, it is about time with Docker; I think it helps us save in that way, and using open source has been helping us not to invest in that. I could say it is maybe forty percent compared to before using Docker.

The lightweight architecture on CentOS affects my resource utilization significantly. I have not really noted down specific metrics, but I realize that when it comes to disk space utilization, it really goes up so fast. We do on-premises deployment mainly with Docker on CentOS, so we have not explored the cloud aspect. Because it was first, we recently did it on Ubuntu, but initially, it was running on CentOS. We were comparing and seeing which one runs better, but I realized on Ubuntu it is much easier to work with. Mainly, the support we get is from online communities in case of any challenges, and there may be some people around who have more expertise in that area; that is how we have been managing. I gave this review an overall rating of seven out of ten.

I have been using Docker on CentOS for two years.

My main use case for Docker on CentOS is in my CI/CD pipeline.

A specific example of how I use Docker on CentOS in my CI/CD process is that we use it to containerize and deploy applications.

We also use it for machine learning pipelines.

The best features Docker on CentOS offers me are the Docker repository.

What I like most about the Docker repository is that it is easy to access and deploy.

Docker on CentOS has positively impacted my organization by improving our time to market. It helps with our time to market because we use it so fast to deploy applications across our company.

I don't know how Docker on CentOS can be improved, and I don't wish to add more about the needed improvements or anything I wish it could do better.

I have been working in my current field for three years.

Docker on CentOS is stable.

Docker on CentOS's scalability is good enough.

The customer support is good.

I did not previously use a different solution before Docker on CentOS.

I have not seen metrics for a return on investment.

My experience with pricing, setup cost, and licensing is that it is good enough.

Before choosing Docker on CentOS, I did not evaluate other options.

My advice to others looking into using Docker on CentOS is to try it and use it. I would rate this review as a 9.