[Release-1.32] - kube-controller-manager pod fails to be created with kube-controller-manager-extra-mount flag

[brandond]

Backport fix for kube-controller-manager pod fails to be created with kube-controller-manager-extra-mount flag

• kube-controller-manager pod fails to be created with kube-controller-manager-extra-mount flag #7422

[ShylajaDevadiga]

Validated on rke2 version v1.32.1-rc2+rke2r1

Environment Details

Infrastructure
Cloud EC2 instance

Node(s) CPU architecture, OS, and Version:

ec2-user@ip-172-31-14-250:~> cat /etc/os-release
NAME="SLES"
VERSION="15-SP5"
VERSION_ID="15.5"
PRETTY_NAME="SUSE Linux Enterprise Server 15 SP5"

Cluster Configuration:
Single node

Config.yaml:

cat /etc/rancher/rke2/config,yaml
write-kubeconfig-mode: 644
token: "secret"
kube-controller-manager-extra-mount:
        - /tmp/example.txt:/tmp/example.txt
        - /var/lib/rancher/rke2/server/logs/:/var/lib/rancher/rke2/server/logs

Steps to reproduce the issue and validate the fix

1. Copy config.yaml
2. touch /tmp/example.txt
3. Install rke2

Reproduction results:

ec2-user@ip-172-31-14-250:~> rke2 -v
rke2 version v1.32.0+rke2r1 (1182e7eb91b27b1686e69306eb2e227928a27a38)
go version go1.23.3 X:boringcrypto
ec2-user@ip-172-31-14-250:~> sudo tail -f /var/lib/rancher/rke2/agent/pod-manifests/kube-controller-manager.yaml 
    name: file9
  - hostPath:
      path: /tmp/example.txt
      type: File
    name: extra-mount-0
  - hostPath:
      path: /var/lib/rancher/rke2/server/logs/
      type: File
    name: extra-mount-1
status: {}

Validation results:

ec2-user@ip-172-31-14-250:~> rke2 -v
rke2 version v1.32.1-rc2+rke2r1 (05677054d746d22a307e478557a443e3a80cb737)
go version go1.23.4 X:boringcrypto
ec2-user@ip-172-31-14-250:~> sudo tail -f /var/lib/rancher/rke2/agent/pod-manifests/kube-controller-manager.yaml
    name: file9
  - hostPath:
      path: /tmp/example.txt
      type: File
    name: extra-mount-0
  - hostPath:
      path: /var/lib/rancher/rke2/server/logs/
      type: DirectoryOrCreate
    name: extra-mount-1
status: {}