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Update documentation for default pod resource requests

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Including information on how to override the default resources
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Matthew Jones 2018-03-15 11:08:15 -04:00
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INSTALL.md
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@ -117,6 +117,15 @@ To complete a deployment to OpenShift, you will obviously need access to an Open
You will also need to have the `oc` command in your PATH. The `install.yml` playbook will call out to `oc` when logging into, and creating objects on the cluster.
The default resource requests per-pod requires:
> Memory: 6GB
> CPU: 3 cores
This can be tuned by overriding the variables found in [/installer/openshift/defaults/main.yml](/installer/openshift/defaults/main.yml). Special care should be taken when doing this as undersized instances will experience crashes and resource exhaustion.
For more detail on how resource requests are formed see: [https://docs.openshift.com/container-platform/latest/dev_guide/compute_resources.html#dev-compute-resources](https://docs.openshift.com/container-platform/latest/dev_guide/compute_resources.html#dev-compute-resources)
#### Deploying to Minishift
Install Minishift by following the [installation guide](https://docs.openshift.org/latest/minishift/getting-started/installing.html).
@ -289,6 +298,15 @@ A Kubernetes deployment will require you to have access to a Kubernetes cluster
The installation program will reference `kubectl` directly. `helm` is only necessary if you are letting the installer configure PostgreSQL for you.
The default resource requests per-pod requires:
> Memory: 6GB
> CPU: 3 cores
This can be tuned by overriding the variables found in [/installer/kubernetes/defaults/main.yml](/installer/kubernetes[/defaults/main.yml). Special care should be taken when doing this as undersized instances will experience crashes and resource exhaustion.
For more detail on how resource requests are formed see: [https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/](https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/)
### Pre-build steps
Before starting the build process, review the [inventory](./installer/inventory) file, and uncomment and provide values for the following variables found in the `[all:vars]` section uncommenting when necessary. Make sure the openshift and standalone docker sections are commented out: