Remove kubernetes 1.21 variants

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
     continue-on-error: ${{ matrix.supported }}
     strategy:
       matrix:
-        variant: [aws-k8s-1.21, aws-k8s-1.22, aws-k8s-1.23, aws-k8s-1.24, aws-k8s-1.25, aws-ecs-1]
+        variant: [aws-k8s-1.22, aws-k8s-1.23, aws-k8s-1.24, aws-k8s-1.25, aws-ecs-1]
         arch: [x86_64, aarch64]
         supported: [true]
         fetch-upstream: ["false"]
@@ -47,10 +47,6 @@ jobs:
             arch: x86_64
             supported: false
             fetch-upstream: "false"
-          - variant: metal-k8s-1.21
-            arch: x86_64
-            supported: false
-            fetch-upstream: "false"
           - variant: metal-k8s-1.22
             arch: x86_64
             supported: false
@@ -67,10 +63,6 @@ jobs:
             arch: x86_64
             supported: false
             fetch-upstream: "false"
-          - variant: vmware-k8s-1.21
-            arch: x86_64
-            supported: true
-            fetch-upstream: "false"
           - variant: vmware-k8s-1.22
             arch: x86_64
             supported: true
@@ -87,14 +79,6 @@ jobs:
             arch: x86_64
             supported: true
             fetch-upstream: "false"
-          - variant: aws-k8s-1.21-nvidia
-            arch: x86_64
-            supported: true
-            fetch-upstream: "true"
-          - variant: aws-k8s-1.21-nvidia
-            arch: aarch64
-            supported: true
-            fetch-upstream: "true"
           - variant: aws-k8s-1.22-nvidia
             arch: x86_64
             supported: true

BUILDING.md

@@ -203,7 +203,7 @@ The specifics of building an out-of-tree module will vary by project, but the fi
 ### Downloading the kmod kit
 
 kmod kits are included in the official Bottlerocket repos starting with Bottlerocket v1.0.6.
-Let's say you want to download the kit for building x86_64 modules for v1.7.0 and variant aws-k8s-1.21.
+Let's say you want to download the kit for building x86_64 modules for v1.11.0 and variant aws-k8s-1.24.
 
 First, you need tuftool:
 ```shell
@@ -220,8 +220,8 @@ sha512sum -c <<<"b81af4d8eb86743539fbc4709d33ada7b118d9f929f0c2f6c04e1d41f46241e
 Next, set your desired parameters, and download the kmod kit:
 ```shell
 ARCH=x86_64
-VERSION=v1.7.0
-VARIANT=aws-k8s-1.21
+VERSION=v1.11.0
+VARIANT=aws-k8s-1.24
 OUTDIR="${VARIANT}-${VERSION}"
 
 tuftool download "${OUTDIR}" --target-name ${VARIANT}-${ARCH}-kmod-kit-${VERSION}.tar.xz \

QUICKSTART-VMWARE.md

@@ -46,7 +46,7 @@ Next, set your desired version and variant, and download the OVA:
 
 ```shell
 VERSION="v1.6.1"
-VARIANT="vmware-k8s-1.21"
+VARIANT="vmware-k8s-1.24"
 OVA="bottlerocket-${VARIANT}-x86_64-${VERSION}.ova"
 OUTDIR="${VARIANT}-${VERSION}"
 

README.md

@@ -60,12 +60,10 @@ For example, an `x86_64` build of the `aws-k8s-1.24` variant will produce an ima
 
 The following variants support EKS, as described above:
 
-* `aws-k8s-1.21`
 * `aws-k8s-1.22`
 * `aws-k8s-1.23`
 * `aws-k8s-1.24`
 * `aws-k8s-1.25`
-* `aws-k8s-1.21-nvidia`
 * `aws-k8s-1.22-nvidia`
 * `aws-k8s-1.23-nvidia`
 * `aws-k8s-1.24-nvidia`
@@ -78,29 +76,21 @@ The following variants support ECS:
 
 We also have variants that are designed to be Kubernetes worker nodes in VMware:
 
-* `vmware-k8s-1.21`
 * `vmware-k8s-1.22`
 * `vmware-k8s-1.23`
 * `vmware-k8s-1.24`
 * `vmware-k8s-1.25`
 
 The following variants are designed to be Kubernetes worker nodes on bare metal:
 
-* `metal-k8s-1.21`
 * `metal-k8s-1.22`
 * `metal-k8s-1.23`
 * `metal-k8s-1.24`
 * `metal-k8s-1.25`
 
 The following variants are no longer supported:
 
-* `aws-k8s-1.15`
-* `aws-k8s-1.16`
-* `aws-k8s-1.17`
-* `aws-k8s-1.18`
-* `aws-k8s-1.19`
-* `aws-k8s-1.20`
-* `vmware-k8s-1.20`
+* All Kubernetes variants using Kubernetes 1.21 and earlier
 
 We recommend users replace nodes running these variants with the [latest variant compatible with their cluster](variants/).
 

TESTING.md

@@ -198,18 +198,18 @@ You will need to delete the EKS cluster manually when you are done using it.
 
 ```shell
 cargo make \
-  -e BUILDSYS_VARIANT="aws-k8s-1.21" \
+  -e BUILDSYS_VARIANT="aws-k8s-1.24" \
   -e BUILDSYS_ARCH="x86_64" \
   build
 
 cargo make \
-  -e BUILDSYS_VARIANT="aws-k8s-1.21" \
+  -e BUILDSYS_VARIANT="aws-k8s-1.24" \
   -e BUILDSYS_ARCH="x86_64" \
   -e PUBLISH_REGIONS="us-west-2"
   ami
 
 cargo make \
-  -e BUILDSYS_VARIANT="aws-k8s-1.21" \
+  -e BUILDSYS_VARIANT="aws-k8s-1.24" \
   -e BUILDSYS_ARCH="x86_64" \
   test
 ```