Clusters are used to distribute traffic, support databases, store files and business applications in the network. Deployment of a fault-tolerant cluster based on Kubernetes ensures horizontal scaling of all system components. Kubernetes is the platform for automatic management of containerized applications, deployment and scaling automation.
IMPORTANT. A fault-tolerant cluster based on Kubernetes is compatible with Foresight Mobile Platform 23.12 or later.
Before deploying a fault-tolerant cluster based on Kubernetes see the system requirements.
Main stages of schema of deployment of fault-tolerant cluster based on Kubernetes:
NOTE. If at least 350 GB is allocated on each work node in the root section, skip this step.
If issues arise during deployment of a fault-tolerant cluster based on Kubernetes, see the Solving Possible Issues on Use of Kubernetes section.
Generalized scheme of fault-tolerant cluster architecture deployment:
The scheme displays the work of main cluster nodes and their interaction with work nodes and incoming requests via special services with load balancer support.
Scheme of providing control cluster part fault-tolerance:
NOTE. Each main node in the cluster contains the following processes and components:
• kube-apiserver. Single control point for cluster. The kubectl command interacts directly via API.
• kube-controller-manager. Process of cluster status control via controllers.
• kube-scheduler. Process of task planning on all available cluster nodes.
• etcd. Database based on the key-value pairs that stores information about statuses of all cluster components.
If Foresight Mobile Platform 23.12 is used, it requires Kubernetes 1.25, 1.26, 1.27 or 1.28.
Operating system:
Ubuntu 20.04.
Astra Linux SE 1.7.3.
Number of CPU: 4.
The table contains minimum recommended system requirements for mobile platform work depending on node role:
Node role | Number of nodes | RAM volume | HDD |
Main node | Virtual environment: 1 Bare Metal: 3 |
8 GB | 40-60 GB |
Work node | Virtual environment: 4 Bare Metal: 4 |
16 GB | 250-500 GB |
One requires a separate computer for loading mobile platform images to Docker image local storage.
See also: