integration test for HostPort support

test/860_weave_kube_portmap_3_test.sh

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+#! /bin/bash
+
+. "$(dirname "$0")/config.sh"
+
+function howmany { echo $#; }
+
+#
+# Test vars
+#
+TOKEN=112233.4455667788990000
+HOST1IP=$($SSH $HOST1 "getent hosts $HOST1 | cut -f 1 -d ' '")
+NUM_HOSTS=$(howmany $HOSTS)
+SUCCESS="$(( $NUM_HOSTS * ($NUM_HOSTS-1) )) established"
+KUBECTL="sudo kubectl --kubeconfig /etc/kubernetes/admin.conf"
+KUBE_PORT=6443
+IMAGE=weaveworks/network-tester:latest
+
+if [ -n "$COVERAGE" ]; then
+    COVERAGE_ARGS="env:\\n                - name: EXTRA_ARGS\\n                  value: \"-test.coverprofile=/home/weave/cover.prof --\""
+else
+    COVERAGE_ARGS="env:"
+fi
+
+#
+# Utility functions
+#
+function teardown_kubernetes_cluster {
+    greyly echo "Tearing down kubernetes cluster"
+    for host in $HOSTS; do
+        run_on $host "sudo kubeadm reset --force && sudo rm -r -f /opt/cni/bin/*weave*"
+    done
+}
+
+function setup_kubernetes_cluster {
+    teardown_kubernetes_cluster;
+
+    greyly echo "Setting up kubernetes cluster"
+
+    # kubeadm init upgrades to latest Kubernetes version by default, therefore we try to lock the version using the below option:
+    k8s_version="$(run_on $HOST1 "kubelet --version" | grep -oP "(?<=Kubernetes )v[\d\.\-beta]+")"
+
+    for host in $HOSTS; do
+        if [ $host = $HOST1 ] ; then
+        run_on $host "sudo systemctl start kubelet && sudo kubeadm init --kubernetes-version=$k8s_version --token=$TOKEN"
+        else
+        run_on $host "sudo systemctl start kubelet && sudo kubeadm join --token=$TOKEN --discovery-token-unsafe-skip-ca-verification $HOST1IP:$KUBE_PORT"
+        fi
+    done
+
+    # Ensure Kubernetes uses locally built container images and inject code coverage environment variable (or do nothing depending on $COVERAGE):
+    sed -e "s%imagePullPolicy: Always%imagePullPolicy: Never%" \
+        -e "s%env:%$COVERAGE_ARGS%" \
+        "$(dirname "$0")/../prog/weave-kube/weave-daemonset-k8s-1.7.yaml" | run_on "$HOST1" "$KUBECTL apply -n kube-system -f -"
+}
+
+function weave_connected {
+    run_on $HOST1 "curl -sS http://127.0.0.1:6784/status | grep \"$SUCCESS\""
+}
+
+# setup a daemonset that uses hostport 80
+function setup_hostport_daemonSet {
+    greyly echo "Deploying daemonset that use hostport 80"
+    run_on $HOST1 "$KUBECTL create -f -" <<EOF
+apiVersion: extensions/v1beta1
+kind: DaemonSet
+metadata:
+  name: frontend
+spec:
+  template:
+    metadata:
+      labels:
+        app: frontend-webserver
+    spec:
+      containers:
+        - name: webserver
+          image: nginx
+          ports:
+          - containerPort: 80
+            hostPort: 80
+EOF
+}
+
+function check_daemonset_ready {
+    ready=$($SSH $HOST1 "$KUBECTL get ds frontend  -o go-template='{{.status.numberReady}}'")
+    if [ $ready = "2" ] ; then
+        return 0
+    fi
+    return 1
+}
+
+#
+# Suite
+#
+function main {
+    start_suite "Test weave-net support for Kubernetes HostPort";
+
+    setup_kubernetes_cluster;
+
+    # Need to wait until all pods have come up
+    assert_raises "wait_for_x weave_connected 'pods to be running weave net'"
+
+    setup_hostport_daemonSet
+
+    assert_raises 'wait_for_x check_daemonset_ready "wait for pods to be ready" 200'
+
+    # verify hostport is accessible on each node
+    assert_raises "run_on $HOST2 curl 127.0.0.1:80"
+    assert_raises "run_on $HOST3 curl 127.0.0.1:80"
+
+    teardown_kubernetes_cluster;
+
+    end_suite;
+}
+
+main