Duplicate TuneD profiles with the same name and different content cause periodic TuneD restarts  

Always

Create two custom Tuned CRs.

Profile 1

apiVersion: tuned.openshift.io/v1
kind: Tuned
metadata:
  name: openshift-profile-dup
  namespace: openshift-cluster-node-tuning-operator
spec:
  profile:
  - data: |
      [main]
      summary=Custom OpenShift profile
      include=openshift-node
      [sysctl]
      kernel.shmmni=8192
    name: openshift-profile
  recommend:
  - match:
    - label: profile
    priority: 20
    profile: openshift-profile

Profile 2

apiVersion: tuned.openshift.io/v1
kind: Tuned
metadata:
  name: openshift-profile-dup2
  namespace: openshift-cluster-node-tuning-operator
spec:
  profile:
  - data: |
      [main]
      summary=Custom OpenShift profile
      include=openshift-node
      [sysctl]
      kernel.shmmni=8191
    name: openshift-profile
  recommend:
  - match:
    - label: profile
    priority: 20
    profile: openshift-profile
 

TuneD periodically restarting in 600s intervals.

User sufficiently informed about the misconfiguration (duplicate TuneD profiles) not only in the operator logs and TuneD not periodically restarting.

This has bitten us a few times in the past, most recently in https://access.redhat.com/support/cases/#/case/03940882

There is an associated TuneD issue with this, but it should not be a problem in NTO 4.14+ https://issues.redhat.com/browse/RHEL-60898