About VMware Tanzu Greenplum for Kubernetes
VMware Tanzu Greenplum utilizes the Kubernetes platform to help you quickly and reliably deploy Greenplum clusters that are tailored for a variety of use cases, such as analytical processing with business intelligence tools or high-performance ETL operations for data scientists. Post-deployment, VMware Tanzu Greenplum helps you maintain your Greenplum cluster by expanding it to accommodate additional processing requirements or activating standby servers to maintain high availability.
The VMware Tanzu Greenplum distribution for Kubernetes provides Docker images with the VMware Tanzu Greenplum Database software and the Greenplum Operator running on Ubuntu. The Greenplum Operator registers VMware Tanzu Greenplum as a first-class resource within Kubernetes, and orchestrates the deployment, management, and deletion of Greenplum in Kubernetes, as directed by your requests. In most cases, you simply specify the desired Greenplum configuration in a declarative YAML-formatted file, and provide that file to the Greenplum Operator.
VMware Tanzu Greenplum for Kubernetes is functionally different from the VMware Tanzu Greenplum Database in other deployment environments:
- Certain features, such as MADlib, that are optional in other deployments are installed automatically with VMware Tanzu Greenplum for Kubernetes.
- VMware Tanzu Greenplum for Kubernetes uses Resource Group-based resource management by default, compared to other deployment environments that use Resource Queue-based resource management.
- VMware Tanzu Greenplum for Kubernetes sets the default value of the
gp_resource_group_memory_limitconfiguration parameter to 1.0, because it operates in an environment with reserved resources that are not shared between multiple primary and mirror segments.
- VMware Tanzu Greenplum for Kubernetes does not currently support cluster monitoring with Greenplum Command Center. Use system-level monitoring tools such as Prometheus and Grafana until Greenplum Command Center support is available.
- VMware Tanzu Greenplum clusters in Kubernetes do not support installing Greenplum extensions that use the
gppkgutility). Future releases will include these extensions as part of the distribution, as with MADlib.