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8.5.2. Resource guidelines for installing OpenShift Container Platform on RHOSP
To support an OpenShift Container Platform installation, your Red Hat OpenStack Platform (RHOSP) quota must meet the following requirements:
表8.29 Recommended resources for a default OpenShift Container Platform cluster on RHOSP
| Resource | Value |
|---|---|
| Floating IP addresses | 3 |
| Ports | 15 |
| Routers | 1 |
| Subnets | 1 |
| RAM | 112 GB |
| vCPUs | 28 |
| Volume storage | 275 GB |
| Instances | 7 |
| Security groups | 3 |
| Security group rules | 60 |
A cluster might function with fewer than recommended resources, but its performance is not guaranteed.
If RHOSP object storage (Swift) is available and operated by a user account with the swiftoperator role, it is used as the default backend for the OpenShift Container Platform image registry. In this case, the volume storage requirement is 175 GB. Swift space requirements vary depending on the size of the image registry.
By default, your security group and security group rule quotas might be low. If you encounter problems, run openstack quota set --secgroups 3 --secgroup-rules 60 <project> as an administrator to increase them.
An OpenShift Container Platform deployment comprises control plane machines, compute machines, and a bootstrap machine.
8.5.2.1. Control plane and compute machines
By default, the OpenShift Container Platform installation process stands up three control plane and three compute machines.
Each machine requires:
- An instance from the RHOSP quota
- A port from the RHOSP quota
- A flavor with at least 16 GB memory, 4 vCPUs, and 25 GB storage space
Compute machines host the applications that you run on OpenShift Container Platform; aim to run as many as you can.