OCNRF Pre-requisites

This section includes information about the required pre-requisites before initiating OCNRF Installation.

Following are the prerequisites to install and configure OCNRF:

OCNRF Software

The OCNRF software includes:

OCNRF Helm charts
OCNRF docker images

The following software must be installed:

Software	Version
Kubernetes	v1.12.5
HELM	v2.11.0

Additional software that needs to be deployed as per the requirement of the services:

Software	Chart Version	Notes
elasticsearch	1.21.1	Needed for Logging Area
elastic-curator	1.2.1	Needed for Logging Area
elastic-exporter	1.1.2	Needed for Logging Area
logs	2.0.7	Needed for Logging Area
kibana	1.5.2	Needed for Logging Area
grafana	2.2.0	Needed for Metrics Area
prometheus	8.8.0	Needed for Metrics Area
prometheus-node-exporter	1.3.0	Needed for Metrics Area
metallb	0.8.4	Needed for External IP
metrics-server	2.4.0	Needed for Metric Server
tracer	0.8.3	Needed for Tracing Area

Note:

Install the specified software items before proceeding, if any of the above services are needed and the respective software is not already installed in CNE.

To check the installed software items, execute:

helm ls

Some of the systems may need to use helm command with admin.conf file, such as:

helm --kubeconfig admin.conf

Network access

The Kubernetes cluster hosts must have network access to:

Local docker image repository where the OCNRF images are available.
To check if the Kubernetes cluster hosts has network access to the local docker image repository, try to pull any image with tag name to check connectivity by executing:
```
docker pull <docker-repo>/<image-name>:<image-tag>
```
Note:

Some of the systems may need to use helm command with admin.conf file, such as:

helm --kubeconfig admin.conf
Local helm repository where the OCNRF helm charts are available.
To check if the Kubernetes cluster hosts has network access to the local helm repository, execute:
```
helm repo update
```
Note:

Some of the systems may need to use helm command with admin.conf file, such as:

helm --kubeconfig admin.conf

Note:

All the kubectl and helm related commands that are used in this document must be executed on a system depending on the infrastructure of the deployment. It could be a client machine such as a VM, server, local desktop, and so on.

Client machine requirement

There are some requirements for the client machine where the deployment commands need to be executed:

It should have network access to the helm repository and docker image repository.
Helm repository must be configured on the client.
It should have network access to the Kubernetes cluster.
It should have necessary environment settings to run the kubectl commands. The environment should have privileges to create a namespace in the Kubernetes cluster.
It should have helm client installed. The environment should be configured so that the helm install command deploys the software in the Kubernetes cluster.