Last updated: 2019-09-24 10:56:40PDF
A cluster is a collection of cloud resources required for containers to run, including several CVMs, load balancers and other Tencent Cloud resources.
Cluster Type: Container clusters in VPCs are supported.
Cluster Configuration: When creating a cluster, you can configure CVM model, operating system, system disk and data disk size, login password, etc.
Cluster Structure: Prepaid and postpaid CVMs are supported.
You can create clusters, scale up/down nodes, delete clusters and work with clusters directly by using Kubernetes APIs.
Retaining Resources for Cluster
Some resources are retained for each node in a cluster to keep Kubernetes running normally. Specific rules are as follows:
|Total CPU capacity on node (in core)||1||2||4||8||16||32|
|Retained CPU capacity on node (in core)||0.06||0.07||0.08||0.09||0.11||0.14|
|Total memory capacity on node (in Gib)||1||2||4||8||12||16||24||32||48|
|Retained memory capacity on node (in Mib)||160||320||420||830||1200||1300||1660||1830||2420|
Moreover, an extra 100 Mib of memory is retained for each node to avoid the OOM error.
After log collection feature is enabled for a cluster, about 0.3 core of CPU and 250 Mib of memory are used to run log collection plug-in.