add kubernetes ci

hack/ci/e2e.sh

@@ -0,0 +1,257 @@
+#!/bin/sh
+# Copyright The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# hack script for running a kind e2e
+# must be run with a kubernetes checkout in $PWD (IE from the checkout)
+# Usage: SKIP="ginkgo skip regex" FOCUS="ginkgo focus regex" kind-e2e.sh
+
+set -o errexit -o nounset -o xtrace
+
+# Settings:
+# SKIP: ginkgo skip regex
+# FOCUS: ginkgo focus regex
+
+# cleanup logic for cleanup on exit
+CLEANED_UP=false
+cleanup() {
+  if [ "$CLEANED_UP" = "true" ]; then
+    return
+  fi
+  # KIND_CREATE_ATTEMPTED is true once we: kind create
+  if [ "${KIND_CREATE_ATTEMPTED:-}" = true ]; then
+    kind "export" logs "${ARTIFACTS}" || true
+    kind delete cluster || true
+  fi
+  rm -f _output/bin/e2e.test || true
+  # remove our tempdir, this needs to be last, or it will prevent kind delete
+  if [ -n "${TMP_DIR:-}" ]; then
+    rm -rf "${TMP_DIR:?}"
+  fi
+  CLEANED_UP=true
+}
+
+# setup signal handlers
+# shellcheck disable=SC2317 # this is not unreachable code
+signal_handler() {
+  if [ -n "${GINKGO_PID:-}" ]; then
+    kill -TERM "$GINKGO_PID" || true
+  fi
+  cleanup
+}
+trap signal_handler INT TERM
+
+# build kubernetes / node image, e2e binaries
+build() {
+  # build the node image w/ kubernetes
+  kind build node-image -v 1
+  GINKGO_SRC_DIR="vendor/github.com/onsi/ginkgo/v2/ginkgo"
+  # make sure we have e2e requirements
+  make all WHAT="cmd/kubectl test/e2e/e2e.test ${GINKGO_SRC_DIR}"
+}
+
+# up a cluster with kind
+create_cluster() {
+  # Grab the version of the cluster we're about to start
+  KUBE_VERSION="$(docker run --rm --entrypoint=cat "kindest/node:latest" /kind/version)"
+
+  # Default Log level for all components in test clusters
+  KIND_CLUSTER_LOG_LEVEL=${KIND_CLUSTER_LOG_LEVEL:-4}
+
+
+  # JSON or YAML map injected into featureGates config
+  feature_gates="${FEATURE_GATES:-{\}}"
+  # --runtime-config argument value passed to the API server, again as a map
+  runtime_config="${RUNTIME_CONFIG:-{\}}"
+
+  # create the config file
+  cat <<EOF > "${ARTIFACTS}/kind-config.yaml"
+# config for 1 control plane node and 2 workers (necessary for conformance)
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+networking:
+  ipFamily: ${IP_FAMILY:-ipv4}
+  kubeProxyMode: ${KUBE_PROXY_MODE:-iptables}
+  # don't pass through host search paths
+  # TODO: possibly a reasonable default in the future for kind ...
+  dnsSearch: []
+nodes:
+- role: control-plane
+- role: worker
+- role: worker
+featureGates: ${feature_gates}
+runtimeConfig: ${runtime_config}
+kubeadmConfigPatches:
+- |
+  kind: ClusterConfiguration
+  metadata:
+    name: config
+  apiServer:
+    extraArgs:
+      v: "${KIND_CLUSTER_LOG_LEVEL}"
+  controllerManager:
+    extraArgs:
+      v: "${KIND_CLUSTER_LOG_LEVEL}"
+  ---
+  kind: InitConfiguration
+  nodeRegistration:
+    kubeletExtraArgs:
+      v: "${KIND_CLUSTER_LOG_LEVEL}"
+  ---
+  kind: JoinConfiguration
+  nodeRegistration:
+    kubeletExtraArgs:
+      v: "${KIND_CLUSTER_LOG_LEVEL}"
+EOF
+  # NOTE: must match the number of workers above
+  NUM_NODES=2
+  # actually create the cluster
+  # TODO(BenTheElder): settle on verbosity for this script
+  KIND_CREATE_ATTEMPTED=true
+  kind create cluster \
+    --image=kindest/node:latest \
+    --retain \
+    --wait=1m \
+    -v=3 \
+    "--config=${ARTIFACTS}/kind-config.yaml"
+
+  # debug cluster version
+  kubectl version
+
+  # Patch kube-proxy to set the verbosity level
+  kubectl patch -n kube-system daemonset/kube-proxy \
+    --type='json' -p='[{"op": "add", "path": "/spec/template/spec/containers/0/command/-", "value": "--v='"${KIND_CLUSTER_LOG_LEVEL}"'" }]'
+}
+
+# run e2es with ginkgo-e2e.sh
+run_tests() {
+  K8S_PATH=$(find ${GOPATH} -path '*/k8s.io/kubernetes/go.mod' -print -quit)
+  if [ -z "${K8S_PATH}" ]; then
+    K8S_PATH=$(find / -path '*/kubernetes/go.mod' -print -quit)
+  fi
+  cd $(dirname ${K8S_PATH})
+  # IPv6 clusters need some CoreDNS changes in order to work in k8s CI:
+  # 1. k8s CI doesn´t offer IPv6 connectivity, so CoreDNS should be configured
+  # to work in an offline environment:
+  # https://github.com/coredns/coredns/issues/2494#issuecomment-457215452
+  # 2. k8s CI adds following domains to resolv.conf search field:
+  # c.k8s-prow-builds.internal google.internal.
+  # CoreDNS should handle those domains and answer with NXDOMAIN instead of SERVFAIL
+  # otherwise pods stops trying to resolve the domain.
+  if [ "${IP_FAMILY:-ipv4}" = "ipv6" ]; then
+    # Get the current config
+    original_coredns=$(kubectl get -oyaml -n=kube-system configmap/coredns)
+    echo "Original CoreDNS config:"
+    echo "${original_coredns}"
+    # Patch it
+    fixed_coredns=$(
+      printf '%s' "${original_coredns}" | sed \
+        -e 's/^.*kubernetes cluster\.local/& internal/' \
+        -e '/^.*upstream$/d' \
+        -e '/^.*fallthrough.*$/d' \
+        -e '/^.*forward . \/etc\/resolv.conf$/d' \
+        -e '/^.*loop$/d' \
+    )
+    echo "Patched CoreDNS config:"
+    echo "${fixed_coredns}"
+    printf '%s' "${fixed_coredns}" | kubectl apply -f -
+  fi
+
+  # ginkgo regexes
+  SKIP="${SKIP:-}"
+  FOCUS="${FOCUS:-"\\[Conformance\\]"}"
+  LABEL_FILTER="${LABEL_FILTER:-}"
+  # if we set PARALLEL=true, skip serial tests set --ginkgo-parallel
+  if [ "${PARALLEL:-false}" = "true" ]; then
+    export GINKGO_PARALLEL=y
+    if [ -z "${SKIP}" ]; then
+      SKIP="\\[Serial\\]"
+    else
+      SKIP="\\[Serial\\]|${SKIP}"
+    fi
+  fi
+
+  # setting this env prevents ginkgo e2e from trying to run provider setup
+  export KUBERNETES_CONFORMANCE_TEST='y'
+  # setting these is required to make RuntimeClass tests work ... :/
+  export KUBE_CONTAINER_RUNTIME=remote
+  export KUBE_CONTAINER_RUNTIME_ENDPOINT=unix:///run/containerd/containerd.sock
+  export KUBE_CONTAINER_RUNTIME_NAME=containerd
+  # ginkgo can take forever to exit, so we run it in the background and save the
+  # PID, bash will not run traps while waiting on a process, but it will while
+  # running a builtin like `wait`, saving the PID also allows us to forward the
+  # interrupt
+  ./hack/ginkgo-e2e.sh \
+    '--provider=skeleton' "--num-nodes=${NUM_NODES}" \
+    "--ginkgo.focus=${FOCUS}" "--ginkgo.skip=${SKIP}" "--ginkgo.label-filter=${LABEL_FILTER}" \
+    "--report-dir=${ARTIFACTS}" '--disable-log-dump=true' &
+  GINKGO_PID=$!
+  wait "$GINKGO_PID"
+}
+
+install_dranet() {
+  # Install dranet
+  export IMAGE_NAME="registry.k8s.io/networking/dranet"
+  # Build the image
+  docker build -t "$IMAGE_NAME":test -f Dockerfile . --load
+  # Load the image into kind
+  kind load docker-image "$IMAGE_NAME":test
+   # Install dranet
+  _install=$(sed s#"$IMAGE_NAME".*#"$IMAGE_NAME":test# < ./install.yaml)
+  printf '%s' "${_install}" | kubectl apply -f -
+  kubectl wait --for=condition=ready pods --namespace=kube-system -l k8s-app=dranet
+}
+
+main() {
+  # create temp dir and setup cleanup
+  TMP_DIR=$(mktemp -d)
+
+  # ensure artifacts (results) directory exists when not in CI
+  export ARTIFACTS="${ARTIFACTS:-${PWD}/_artifacts}"
+  mkdir -p "${ARTIFACTS}"
+
+  # export the KUBECONFIG to a unique path for testing
+  KUBECONFIG="${HOME}/.kube/kind-test-config"
+  export KUBECONFIG
+  echo "exported KUBECONFIG=${KUBECONFIG}"
+
+  # debug kind version
+  kind version
+
+  # build kubernetes
+  K8S_PATH=$(find ${GOPATH} -path '*/k8s.io/kubernetes/go.mod' -print -quit)
+  if [ -z "${K8S_PATH}" ]; then
+    K8S_PATH=$(find / -path '*/kubernetes/go.mod' -print -quit)
+  fi
+  cd $(dirname ${K8S_PATH})
+
+  build
+  # in CI attempt to release some memory after building
+  if [ -n "${KUBETEST_IN_DOCKER:-}" ]; then
+    sync || true
+    echo 1 > /proc/sys/vm/drop_caches || true
+  fi
+
+  cd -
+
+  # create the cluster and run tests
+  res=0
+  create_cluster || res=$?
+  install_dranet || res=$?
+  run_tests || res=$?
+  cleanup || res=$?
+  exit $res
+}
+
+main