Preparing a Kubernetes Cluster

Prepare a Kubernetes cluster:

1. Set up and configure a cluster that meets the following requirements:

   • A supported version of Kubernetes is used in this cluster. To learn which Kubernetes versions are supported by CloudBlue Commerce, see Appendix: Supported Kubernetes Versions.

   • This cluster has enough resources to run CloudBlue Commerce components.

   • This cluster includes at least three worker nodes, and each node has at least 8 CPU cores and at least 4 GB of RAM per CPU core.

   To learn how to set up and configure a cluster, please use the Kubernetes documentation.

   Important:
   
   - In this CloudBlue Commerce version, the ipvs mode of kube-proxy is not supported.
   
   - Pod Security Policies are not supported in the current CloudBlue Commerce version. Do not enable them in your cluster.
   
   - Restricted ptrace mode must be configured on each Kubernetes host. To do this, add the following line to the /etc/sysctl.d/10-ptrace.conf file:
   kernel.yama.ptrace_scope = 1

2. Ensure that time is synchronized on all nodes of the cluster. For example, on each node, configure time synchronization with NTP servers.

3. In the cluster, create the following namespaces:

   • cbc: for CloudBlue Commerce components

   • infrastructure: for infrastructure components such as ingress controllers, log management and analytics solutions, and monitoring and alerting solutions

   • connectors: for APS connectors

4. Obtain and save a kubeconfig file with the administrator credentials of this cluster. To obtain the instructions on how to do this, please refer to the Kubernetes documentation.