From b1568c0446c9e183557cfbdc2189e668dd6d554a Mon Sep 17 00:00:00 2001
From: Simon Emms <simon@gitpod.io>
Date: Fri, 1 Apr 2022 15:39:19 +0000
Subject: [PATCH] [kots]: add a kernel version check to the preflights

---
 install/kots/manifests/kots-preflight.yaml | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/install/kots/manifests/kots-preflight.yaml b/install/kots/manifests/kots-preflight.yaml
index 01e4605624adfb..64a0f26403112a 100644
--- a/install/kots/manifests/kots-preflight.yaml
+++ b/install/kots/manifests/kots-preflight.yaml
@@ -6,6 +6,16 @@ kind: Preflight
 metadata:
   name: gitpod
 spec:
+  collectors:
+    - run:
+        collectorName: "kernel"
+        image: alpine/semver
+        name: kernel
+        command:
+          - /bin/sh
+          - -c
+        args:
+          - semver --coerce --range '>=5.4.0' $(uname -r) || echo invalid
   analyzers:
     - clusterVersion:
         outcomes:
@@ -19,7 +29,17 @@ spec:
               uri: https://kubernetes.io
           - pass:
               message: Your cluster meets the recommended and required versions of Kubernetes.
-    # @todo(sje): figure out a way of checking the Kernel version is >= 5.4.0-0
+    - textAnalyze:
+        checkName: Kernel version is 5.4.0 or above
+        fileName: kernel/kernel.log
+        regex: invalid
+        outcomes:
+          - pass:
+              when: "false"
+              message: Kernel version valid
+          - fail:
+              when: "true"
+              message: Kernel must be 5.4.0 or above
     - containerRuntime:
         outcomes:
           - pass: