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Cluster Deployment Scenarios

DCE 5.0 provides four cluster roles to meet different usage scenarios. You can freely combine different cluster deployment combinations based on your business characteristics and infrastructure scenarios.

This article will explain several common usage scenarios.

Single Data Center Scenario

When most of the business is concentrated in a single data center region, there is no need for cross-networking, and the data disaster recovery requirements are low. It is recommended to use the simple mode. That is, only one cluster is needed to run platform-related components (global service cluster + management cluster combined), and multiple clusters are deployed to run business workloads (worker clusters). The number of nodes in a single cluster is determined by the specific business scenario. It is recommended to use 3 master nodes for each cluster to achieve high availability.

Specific deployment schemes depend on your business needs, refer to the following deployment process:

Single Data Center Single Management Cluster

Mode Diagram

Prerequisite: Prepare a node, the operating system and architecture of the node should be consistent with the nodes to be created in the cluster.

  1. Deploy the installer on a bootstrap node and use the installer to install a cluster with two cluster roles:, global service cluster, and management cluster.

  2. Based on the management cluster in the platform, create one or more worker clusters as needed.

Single Data Center Multiple Management Clusters

When you need to add a management cluster within the current single data center to manage the lifecycle of new business clusters, there is no need to install the bootstrap node again. Just install the kubean Operator component on an already created work cluster to give this cluster the ability and role of a management cluster. As shown in the figure below:

Mode Diagram

Prerequisite: The deployment of a single data center single management cluster has been completed in the previous step.

  1. Use helm templates to install kubean on a work cluster details page, wait for the kubean status to change to running.

  2. After kubean is installed on the current work cluster, the cluster role will automatically change to a management cluster. Based on the management cluster in the platform, create one or more worker clusters as needed.

Multi Data Center Scenario

When you have multiple data centers, or different data center networks are isolated, such as in a disaster recovery scenario with two sites and three centers, you have lifecycle management requirements for clusters in different regions and data centers. It is recommended to use the classic mode. At this time, a management cluster can be deployed in different data centers or regions, and all management clusters can be connected to the global service cluster for unified management of the lifecycle of clusters within different regions.

Multi Data Center Multiple Management Clusters

Prerequisite: Prepare a node, the operating system and architecture of the node should be consistent with the nodes to be created in the cluster.

Mode Diagram

Shanghai Data Center

  1. Deploy the installer on a bootstrap node and use the installer to install a management cluster.

  2. After the management cluster is installed, it will automatically create a global service cluster based on the clusterConfig file.

  3. Based on the management cluster in the platform, create one or more worker clusters as needed.

In cross-regional and network isolation scenarios, to unify the lifecycle management of clusters in other data centers, please refer to the following configuration process.

Beijing Data Center

Prerequisite: Prepare a node in the Beijing data center, the operating system and architecture of the node should be consistent with the nodes to be created in the cluster.

  1. Deploy the installer on a bootstrap node in the Beijing data center and use the installer to install a management cluster.

  2. Connect the container management module in the platform (running in the Shanghai data center) to the newly installed management cluster in the Beijing data center.

  3. Based on the platform (running in the Shanghai data center), create one or more worker clusters based on the Beijing data center management cluster as needed.

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