[WORKAROUND] Cannot deploy quickstart on GCP: nothing provides 'selinux-tools' needed by the to be installed k3s-selinux-1.6-1.sle.noarch

[vrubiolo]

Hello,

I am not sure what is the maintenance status of this quick start given the dates of the last closed PR (2022) but this is just a note that the current version cannot be deployed as-is, at least on GCP. It fails at the K3S install stage with :

[INFO]  Using v1.24.14+k3s1 as release
[INFO]  Downloading hash https://github.com/k3s-io/k3s/releases/download/v1.24.14+k3s1/sha256sum-amd64.txt
[INFO]  Skipping binary downloaded, installed k3s matches hash
[INFO]  Finding available k3s-selinux versions
Loading repository data...
Reading installed packages...
Resolving package dependencies...

Problem: 1: nothing provides 'selinux-tools' needed by the to be installed k3s-selinux-1.6-1.sle.noarch
 Solution 1: do not install k3s-selinux-1.6-1.sle.noarch
 Solution 2: break k3s-selinux-1.6-1.sle.noarch by ignoring some of its dependencies

Choose from above solutions by number or cancel [1/2/c/d/?] (c): c

The problem is that k3s-selinux-1.6-1.sle.noarch is selected for installation but on SLES 15 SP7, nothing provides the selinux-tools package. SLES itself is not listed per se as a target for the k3s-selinux package spec file (instead slemicro is) but the selinux-tools dependency is listed as a requirements in the spec file.

The K3S install script run by the Terraform SSH provider provides a workaround though, which skips the installation of the problematic SELinux RPM:

#   - INSTALL_K3S_SKIP_SELINUX_RPM
#     If set to true will skip automatic installation of the k3s RPM.

With the following I was able to successfully deploy the Quick Start:

diff --git a/rancher/rancher-common/k3s.tf b/rancher/rancher-common/k3s.tf
index 5ec28f5..a5e5f5c 100644
--- a/rancher/rancher-common/k3s.tf
+++ b/rancher/rancher-common/k3s.tf
@@ -3,7 +3,7 @@
 resource "ssh_resource" "install_k3s" {
   host = var.node_public_ip
   commands = [
-    "bash -c 'curl https://get.k3s.io | INSTALL_K3S_EXEC=\"server --node-external-ip ${var.node_public_ip} --node-ip ${var.node_internal_ip}\" INSTALL_K3S_VERSION=${var.rancher_kubernetes_version} sh -'"
+    "bash -c 'curl https://get.k3s.io |  INSTALL_K3S_SKIP_SELINUX_RPM=true INSTALL_K3S_EXEC=\"server --node-external-ip ${var.node_public_ip} --node-ip ${var.node_internal_ip}\" INSTALL_K3S_VERSION=${var.rancher_kubernetes_version} sh -'"
   ]
   user        = var.node_username
   private_key = var.ssh_private_key_pem

This worked for me both for the default versions (v1.24.14+rke2r1/v1.24.14+rke2r1) but also the ones I needed (v1.28.15+rke2r1/v1.28.15+k3s1). Hope this helps.