create-kubernetes-binaries-iso.sh builds the ISO without setting a volume ID on EL8 based os's

Inizia in create-kubernetes-binaries-iso.sh e trova il comando mkisofs che crea l’ISO. Riproduci il problema con gli strumenti compatibili con xorriso di EL8, quindi verifica con blkid che l’ISO generata abbia l’etichetta di volume CDROM prevista e possa essere montata in CloudStack.

problem

create-kubernetes-binaries-iso.sh builds the ISO without setting a volume ID on EL8 based os

versions

ACS 4.20.X
ACS 4.22.X
ACS 4.23
Management server : Oracle 8 , rocky 8

The steps to reproduce the bug

1. ISO tooling — genisoimage does not exist on EL8; xorriso provides mkisofs

sudo dnf install -y xorriso curl wget

2. containerd (for ctr) — static tarball avoids the docker-ce repo and podman conflicts

VER=1.7.24
curl -fsSL "https://github.com/containerd/containerd/releases/download/v${VER}/containerd-${VER}-linux-amd64.tar.gz" \
  | sudo tar -C /usr/local -xz
curl -fsSL -o /tmp/runc https://github.com/opencontainers/runc/releases/download/v1.2.3/runc.amd64
sudo install -m 755 /tmp/runc /usr/local/sbin/runc
curl -fsSL https://raw.githubusercontent.com/containerd/containerd/main/containerd.service \
  | sudo tee /etc/systemd/system/containerd.service >/dev/null
sudo systemctl daemon-reload && sudo systemctl enable --now containerd
sudo ln -sf /usr/local/bin/ctr /usr/bin/ctr      # sudo secure_path excludes /usr/local/bin

3. Verify

mkisofs --version && sudo ctr --version && wget --version | head -1 && curl --version | head -1

4. Execute the script

./create-kubernetes-binaries-iso.sh   /var/www/html   1.37.0 1.9.1 1.37.0   https://raw.githubusercontent.com/projectcalico/calico/v3.32.2/manifests/calico.yaml   0.45.0 setup-v1.37.0 amd64 3.7.0

5. Verify the generated iso volume label

[root@ref-trl-12298-k-Mr8-suresh-anaparti-mgmt1 util]# blkid /var/www/html/setup-v1.37.0-x86_64.iso

/var/www/html/setup-v1.37.0-x86_64.iso: BLOCK_SIZE="2048" UUID="2026-09-16-08-13-12-00" LABEL="ISOIMAGE" TYPE="iso9660"

6. If the iso is used in cloudstack , the iso doesn't get mounted

7. Change the script

sed -i 's|^mkisofs -o |mkisofs -V CDROM -o |' create-kubernetes-binaries-iso.sh

8. Run the script again and check the volume label

./create-kubernetes-binaries-iso.sh   /var/www/html   1.37.0 1.9.1 1.37.0   https://raw.githubusercontent.com/projectcalico/calico/v3.32.2/manifests/calico.yaml   0.45.0 setup-v1.37.0 amd64 3.7.0


blkid /var/www/html/setup-v1.37.0-x86_64.iso
/var/www/html/setup-v1.37.0-x86_64.iso: BLOCK_SIZE="2048" UUID="2026-09-16-08-34-56-00" LABEL="CDROM" TYPE="iso9660"

Issue is not present with ubuntu based os

┌──────────────────────┬───────────────┬───────────────────┐
│                      │ Default volid │   With -V CDROM   │
├──────────────────────┼───────────────┼───────────────────┤
│ Ubuntu (genisoimage) │ CDROM         │ CDROM — unchanged │
├──────────────────────┼───────────────┼───────────────────┤
│ OL8 (xorriso compat) │ ISOIMAGE      │ CDROM — fixed     │
└──────────────────────┴───────────────┴───────────────────┘

What to do about it?

Make the following modification to the create-kubernetes-binaries-iso.sh

sed -i 's|^mkisofs -o |mkisofs -V CDROM -o |' create-kubernetes-binaries-iso.sh