Summary: Introduction to Troubleshooting Containers
Explore the fundamentals of containers, Docker, and Kubernetes, understanding how they work together to simplify application deployment. Learn why troubleshooting containers is crucial, identify common failure causes, and grasp basic commands and components to maintain container health and minimize downtime.
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In this chapter, we’ve seen why containers are called containers. We’ve also discussed how applications get easier to build, package, and run with the use of containers.
Containers
We discussed how applications were built before containers: most applications were running on a monolithic architecture. We also highlighted the demerits of monolithic architecture and how containers solved those issues:
Demerits of Monolithic Architecture | Merits of Containers |
Applications took time to be built. | Applications are now built easily. |
There were limitations in carrying out fixes or troubleshooting the application. | The images the applications are built into are lighter, which aid the scalability of the application easily. |
There were issues with running applications on multiple environments. | With containerization, we can deploy and run applications on multiple and different environments. |
Applications being deployed were really heavy, therefore, easily scaling those applications was difficult. | With the relationship between containers and microservices, applications can be decoupled and run on many containers while they interact via API connections. This aids in easy troubleshooting, version upgrade, and fixes on the application. |
In discussing containers further, we looked at their components, Docker ...