An executable script inside a ConfigMap with 0744 permissions that worked in 4.10, no longer works in 4.11 with permission denied errors due to restricted SCC changes.

4.11.x

Always

cat execute.sh
#!/bin/sh
set -euo pipefail
echo "Execute script from CM" 

oc create configmap execute --from-file=execute.sh 

apiVersion: apps/v1
kind: Deployment
metadata:
  name: execute
spec:
  replicas: 1
  selector:
    matchLabels:
      app: cm
  template:
    metadata:
      labels:
        app: cm
    spec:
      securityContext:
        allowPrivilegeEscalation: true
      containers:
      - name: executetoolbox
        image: registry.redhat.io/rhel8/support-tools
        command: ["/scripts/execute.sh"]
        ports:
        - name: myport
          containerPort: 2368
          protocol: TCP
        volumeMounts:
        - name: execute
          mountPath: /scripts
      volumes:
      - name: execute
        configMap:
          name: execute
          defaultMode: 0744 

oc logs execute-7fb77dff67-pxl76
exec /scripts/execute.sh: permission denied 

Script does not execute - needs 754 permissions now

N/A

Change the permissions to give execute to the group:
defaultMode: 0754