Cluster FAQs

Last updated: 2019-09-02 16:38:05

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Cluster Creation FAQs

Can I not select a public IP for the CVM instance when creating a cluster?

Yes. A CVM instance with no public IP can only pull images from "My Images" in Image Registry but not Docker Hub images or third-party images.
A CVM instance with no public IP but with internet bandwidth can access the internet by binding an EIP.

Why do I need to choose a network when creating a cluster?

The selected network and subnet are where the CVM instance resides. You can achieve cross-AZ disaster recovery by adding different CVM instances to subnets in different AZs.

What CVM models are supported for cluster creation?

All models with pay-as-you-go system disks as cloud disks are supported.

What operating systems are supported for TKE hosts?

Currently, Ubuntu 16.04 and CentOS 7.2 are supported. If you need other operating systems, please contact us by submitting a ticket.

CVM Scaling FAQs

What are the limitations of CVM scaling?

You can only choose a region where your current cluster resides, but you may choose a different AZ. Clusters can be deployed across AZs.

Is there a limit to the number of CVM instances?

Yes. There is a limit to the number of pay-as-you-go CVMs each user can own. For more information, see CVM Overview.

CVM Instance Termination FAQs

After a CVM instance is terminated, what will happen to the containers deployed in it?

When a CVM instance is terminated, resources in it such as containers will be terminated too. If the number of containers for a certain service drops below the expected number of running containers, the cluster will launch more containers in other CVM instances until the desired number is met.