Disaster Recovery (DR) for Kubernetes


This section describes the different methods for achieving Disaster Recovery (DR) between multiple Kubernetes clusters when using Portworx.

There are 2 primary options for this:

  1. Metro DR: Nodes are in the same Metro Area Network (MAN)
  2. Asynchronous DR: Nodes are across different regions/datacenters

Choosing between these options depends on how your cluster nodes are laid out. Below section helps you make that choice.

1. Metro DR: Nodes are in the Metro Area Network (MAN)

Portworx metro overview

When

You should use this option when:

  • Nodes in all your Kubernetes clusters are in the same Metro Area Network (MAN). These could be nodes that are in
    • The same cloud region. They can be in different zones.
    • The same datacenter or datacenters that are just 50 miles apart.
  • The network latency between the nodes is lower than ~10ms.

What

The option has the following characteristics:

  • A single Portworx cluster that stretches across multiple Kubernetes clusters.
  • Portworx installation on all clusters use a common external key-value store (e.g etcd).
  • Volumes are automatically replicated across the Kubernetes clusters as they share the same Portworx storage fabric.
  • This option will have zero RPO and RTO less than 60 seconds.

How

Click on the section below for instructions on how to setup this option.

2. Asynchronous DR:Nodes are across different regions/datacenters

Portworx Scheduled migration overview

When

You should use this option when:

  • Nodes in all your Kubernetes clusters are in the different regions or datacenter.
  • The network latency between the nodes is high.

What

The option has the following characteristics:

  • A separate Portworx cluster installation for each Kubernetes clusters.
  • Portworx installations on each cluster can use their own key-value store (e.g etcd).
  • Users create scheduled migrations of application and volumes between 2 clusters that are paired.
  • This option will have an RPO of 15 minutes and RTO less than 60 seconds.

How

Click on the section below to instructions on how to setup this option.

Licensing

Please note that the Disaster Recovery (PX-DR) license is not included with the PX-Enterprise Trial license. If you are interested in testing or purchasing this functionality, please reach out to us at support@portworx.com.


Last edited: Thursday, Aug 8, 2019