A brief introduction to Host/ KVM/ Docker/ Kubernetes/ OpenStack and Mesos:
- Host：
Host refers to a physical server or virtual machine host that can run multiple virtual machines or containers to provide computing and storage resources. Host is a fundamental component in cloud computing and containerization technology.
- KVM：
KVM is an open source virtualization technology that can virtualize a physical server into multiple virtual machines, each of which can run different operating systems and applications. KVM can provide virtualized computing and storage resources and ensure safe isolation.
- Docker：
Docker is a lightweight container technology that packages applications and dependencies in a container and runs in any environment that supports Docker. Docker provides the ability to quickly deploy and port applications.
- Kubernetes：
Kubernetes is an open source container orchestration platform that automates the deployment, scaling, and management of containerized applications. Kubernetes can manage multiple Docker containers and provide functions such as service discovery, load balancing, and automatic scaling.
- OpenStack：
OpenStack is an open source cloud computing platform that provides a series of components and APIs for managing computing, storage and network resources. OpenStack can be used to build private clouds, public clouds or hybrid clouds.
- Mesos：
Mesos is an open source distributed system kernel that provides a scalable resource manager that can pool the computing and storage resources of the entire data center and provide resource scheduling and management services for upper-layer applications. Mesos can manage many different types of applications and systems, including Docker and Kubernetes.
The difference between these technologies:
- Host provides basic computing and storage resources, KVM provides virtualized computing and storage resources, Docker and Kubernetes provide application containerization and orchestration, OpenStack provides cloud computing infrastructure management, and Mesos provides resource scheduling and management services.
- Host, KVM, Docker, and Kubernetes are all containerization technologies, but they serve slightly different purposes. Host provides basic computing and storage resources, KVM provides virtualized computing and storage resources, Docker provides lightweight containerization solutions, and Kubernetes provides container orchestration and management.
- OpenStack is a complete cloud computing platform that provides infrastructure services such as computing, storage and network, and can be used to build private clouds, public clouds or hybrid clouds. Mesos is a distributed system kernel that provides a scalable resource manager, pools the computing and storage resources of the entire data center, and provides resource scheduling and management services for upper-layer applications.
- Mesos can manage many different types of applications and systems, including Docker and Kubernetes, and can run different types of applications at the same time to achieve efficient resource utilization and flexible scheduling. OpenStack and Kubernetes provide different functions in cloud computing and containerization respectively, and are supplements and extensions of Mesos.
The following is a comparison table of the main differences between OpenStack, Docker, Kubernetes, KVM and Mesos:
| Features | OpenStack | Docker | Kubernetes | KVM | Mesos |
|---|---|---|---|---|---|
| type | Cloud computing platform | Container solutions | Container orchestration platform | virtualization technology | Distributed system kernel |
| Function | Provide infrastructure services such as computing, storage and network | Package applications and dependencies in containers for rapid deployment and porting | Automate deployment, scaling and management of containerized applications | Virtualize a physical server into multiple virtual machines to achieve effective resource utilization and isolation | Provides a scalable resource manager to pool computing and storage resources across the entire data center |
| use | Build a private cloud, public cloud or hybrid cloud | Quickly deploy and manage applications | Automate deployment and management of containerized applications | Run different operating systems and applications to achieve efficient resource utilization and isolation | Manage different types of applications and systems, including Docker, Kubernetes, and more |
| Main components | Nova, Neutron, Glance, Cinder, etc. | Docker Engine、Docker Compose、Docker Swarm 等 | API Server、etcd、kubelet、kube-proxy 等 | QEMU、libvirt、virt-manager 等 | Mesos Master、Mesos Agent、Marathon、Chronos 等 |
| Deployment method | Requires multiple components to be installed and configured | Can run on a single host | Can run on a single host or multiple hosts | Requires installation and configuration of virtualization software | Can run on a single host or multiple hosts |
| Application scenarios | Suitable for large-scale cloud computing environments | Ideal for rapid deployment and management of applications | Application management for containerization | Suitable for scenarios running different operating systems and applications | Suitable for resource pooling and flexible scheduling scenarios |
In general, OpenStack is suitable for large-scale cloud computing environments, Docker and Kubernetes are suitable for rapid deployment and management of containerized applications, KVM is suitable for virtualizing different operating systems and applications, and Mesos is suitable for resource pooling and flexibility. Scheduling scenes.