P5G RH-OCP Prep Guide

p5g-prep-guide.yaml

### Main Guideline
https://docs.openshift.com/container-platform/4.14/scalability_and_performance/ztp_far_edge/ztp-reference-cluster-configuration-for-vdu.html#sno-configure-for-vdu

### Enable SCTP
https://docs.openshift.com/container-platform/4.14/networking/using-sctp.html
For SNO make sure -> machineconfiguration.openshift.io/role: master

### Install Service Mesh
https://docs.openshift.com/container-platform/4.14/service_mesh/v2x/installing-ossm.html

### HugePages
REF: https://docs.openshift.com/container-platform/4.14/scalability_and_performance/what-huge-pages-do-and-how-they-are-consumed-by-apps.html

Edit following GIST based on your CPU model/cores and apply: https://gist.github.com/fenar/9b0461b222a63b33ffcaa2dae964ba22

Verify that your HP applied properly by following check
oc get nodes
oc get node <node_name> -o jsonpath="{.status.allocatable.hugepages-2Mi}"

Sample output:
fenar@macpro71 acmhub % oc get nodes
NAME                         STATUS   ROLES                         AGE   VERSION
api-int.acmhub2.narlabs.io   Ready    control-plane,master,worker   10d   v1.27.8+4fab27b
fenar@macpro71 acmhub % oc get node api-int.acmhub2.narlabs.io -o jsonpath="{.status.allocatable.hugepages-2Mi}"
16Gi%

### Enabling Privileges for UPF
oc project i2i-5gcore
oc adm policy add-scc-to-user anyuid -z default
oc adm policy add-scc-to-user hostaccess -z default
oc adm policy add-scc-to-user hostmount-anyuid -z default
oc adm policy add-scc-to-user privileged -z default

### Hazelcast Install
Install HazelCast Cerfied Operator from Opeator Hub and use following to create secret and instance

oc create secret generic hazelcast-license-key --from-literal=license-key="UseYourKeyHere"

apiVersion: hazelcast.com/v1alpha1
kind: Hazelcast
metadata:
  name: hazelcast-sample
spec:
  clusterSize: 3
  repository: 'docker.io/hazelcast/hazelcast-enterprise'
  licenseKeySecret: hazelcast-license-key <-- Has to Match with your SecretKey Name Above!
  userCodeDeployment:
    clientEnabled: true
  serialization:
    allowOverrideDefaultSerializers: true
    enableCompression: true

### Based on your NICs setup build multus interfaces
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: whereabouts100
spec:
  config: '{
      "cniVersion": "0.3.0",
      "name": "was-i2i5gcore-192.168.100",
      "type": "macvlan",
      "master": "ens2", <-- Has to Match with your additional high throughput Network Interface Name
      "mode": "bridge",
      "ipam": {
        "type": "whereabouts",
        "range": "192.168.100.0/24",
        "gateway": "192.168.100.1",
        "exclude": [
           "192.168.100.1/32"
        ]
      }
    }'

### In MultiNode Cluster Enabling Master for Tenant PODs
oc edit schedulers.config.openshift.io cluster
-->
spec:
  mastersSchedulable: true <--