Unblock CI (#219)

* Bump CI os and Python versions

The integration tests use Python 3.8 / ubuntu 20.04. The problem is
that k8s-snap tests use type specifiers that require Python 3.10.

For this reason, we'll switch to Python 3.10 / ubuntu 22.04.

* Install lxd using k8s-snap composite action

This simplifies the gh workflows and also applies the Docker
iptables workaround.

* Use self-hosted runners

k8s-snap switched to self-hosted CI runners as the default Github
ones didn't have enough resources.

We'll update the k8s-dqlite CI job to use self-hosted runners as
well when running k8s-snap integration tests.

* Fix r install

* Remove "get" checks

The e2e tests are currently failing because of this k8s-dqlite error:

  k8s.k8s-dqlite[1947]: time="2025-01-09T15:00:22Z" level=error
  msg="error while range on /registry/clusterroles/system:aggregate-to-view :
  unexpected limit: want 0, got 1"

A separate PR is removing this check: #212

That being considered, we'll apply this change here to unblock
the CI.

* fix self-hosted runner tag

.github/workflows/k8s-snap-integration.yaml

@@ -15,15 +15,15 @@ concurrency:
 jobs:
   build:
     name: K8s-snap Integration Test
-    runs-on: ubuntu-20.04
+    runs-on: self-hosted-linux-amd64-jammy-large
 
     steps:
       - name: Checking out repo
         uses: actions/checkout@v4
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.8"
+          python-version: "3.10"
       - name: Install tox
         run: pip install tox
       - name: Install Go
@@ -34,11 +34,7 @@ jobs:
         run: |
           sudo snap download k8s --channel=latest/edge --basename k8s
       - name: Install lxd
-        run: |
-          sudo snap refresh lxd --channel 5.21/stable
-          sudo lxd init --auto
-          sudo usermod --append --groups lxd $USER
-          sg lxd -c 'lxc version'
+        uses: canonical/k8s-snap/.github/actions/install-lxd@main
       - name: Build k8s-dqlite
         run: |
           make static

.github/workflows/performance.yaml

@@ -21,7 +21,7 @@ env:
 jobs:
   build:
     name: K8s-snap Performance Test
-    runs-on: ubuntu-20.04
+    runs-on: self-hosted-linux-amd64-jammy-large
     steps:
       - name: Harden Runner
         uses: step-security/harden-runner@v2
@@ -42,20 +42,10 @@ jobs:
           go-version: "1.22"
       - name: Set-up R
         run: |
-          sudo apt install r-base
+          sudo apt-get install -y r-base
           sudo Rscript -e 'install.packages(c("ggplot2", "dplyr", "optparse"), repos="https://cloud.r-project.org")'
       - name: Install lxd
-        run: |
-          sudo snap refresh lxd --channel 5.21/stable
-          sudo lxd init --auto
-          sudo usermod --append --groups lxd $USER
-          sg lxd -c 'lxc version'
-      - name: Ensure lxd network traffic flows by removing docker if installed
-        run: |
-          if command -v docker >/dev/null 2>&1; then
-            echo "Docker is installed, purging it"
-            sudo apt-get purge -y docker-engine docker docker.io docker-ce docker-ce-cli containerd runc
-          fi
+        uses: canonical/k8s-snap/.github/actions/install-lxd@main
       - name: Download latest k8s-snap
         run: |
           sudo snap download k8s --channel=latest/edge --basename k8s

pkg/kine/server/get.go

@@ -23,13 +23,6 @@ func (l *LimitedServer) get(ctx context.Context, r *etcdserverpb.RangeRequest) (
 		attribute.Int64("revision", r.Revision),
 	)
 
-	if len(r.RangeEnd) != 0 {
-		return nil, fmt.Errorf("unexpected rangeEnd: want empty, got %s", r.RangeEnd)
-	}
-	if r.Limit != 0 {
-		return nil, fmt.Errorf("unexpected limit: want 0, got %d", r.Limit)
-	}
-
 	rev, kv, err := l.backend.List(ctx, string(r.Key), "", 1, r.Revision)
 	if err != nil {
 		return nil, err