chore: bump kind and k8s version

- bump kind client to v0.8.1
- bump k8s version to v1.18.2
- add netcat to dapper builder

BREAKING CHANGE: bump kind version to v0.8.1

Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

adaptors/ble/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

adaptors/dummy/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

adaptors/modbus/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

adaptors/mqtt/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

adaptors/opcua/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker

hack/lib/cluster-kind.sh

@@ -4,17 +4,17 @@
 # Kind cluster variables helpers. These functions need the
 # following variables:
 #
-#    KIND_VERSION    -  The Kind version for running, default is v0.7.0.
-#    K8S_VERSION     -  The Kubernetes version for the cluster, default is v1.17.2.
+#    KIND_VERSION    -  The Kind version for running, default is v0.8.1.
+#    K8S_VERSION     -  The Kubernetes version for the cluster, default is v1.18.2.
 #    CLUSTER_NAME    -  The name for the cluster, default is edge.
 #    CONTROL_PLANES  -  The number of the control-plane, default is 1.
 #    WORKERS         -  The number of the workers, default is 3.
 
-K8S_VERSION=${K8S_VERSION:-"v1.17.2"}
+K8S_VERSION=${K8S_VERSION:-"v1.18.2"}
 CLUSTER_NAME=${CLUSTER_NAME:-"edge"}
 
 function octopus::cluster_kind::install() {
-  local version=${KIND_VERSION:-"v0.7.0"}
+  local version=${KIND_VERSION:-"v0.8.1"}
   curl -fL "https://github.com/kubernetes-sigs/kind/releases/download/${version}/kind-$(octopus::util::get_os)-$(octopus::util::get_arch)" -o /tmp/kind
   chmod +x /tmp/kind && mv /tmp/kind /usr/local/bin/kind
 }
@@ -38,6 +38,8 @@ function octopus::cluster_kind:setup_configuration() {
   cat >"${config}" <<EOF
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
+networking:
+  apiServerAddress: "0.0.0.0"
 nodes:
 EOF
 
@@ -46,10 +48,39 @@ EOF
     control_planes=1
   fi
   for ((i = 0; i < control_planes; i++)); do
-    # shellcheck disable=SC2086
-    cat >>${config} <<EOF
+    if [[ ${i} -eq 0 ]]; then
+      local random_port_start
+      random_port_start=$(octopus::util::get_random_port_start 2)
+      local ingress_http_port=$((random_port_start + 0))
+      octopus::log::info "INGRESS_HTTP_PORT is ${ingress_http_port}"
+      export INGRESS_HTTP_PORT=${ingress_http_port}
+      local ingress_https_port=$((random_port_start + 1))
+      octopus::log::info "INGRESS_HTTPS_PORT is ${ingress_https_port}"
+      export INGRESS_HTTPS_PORT=${ingress_https_port}
+
+      # shellcheck disable=SC2086
+      cat >>${config} <<EOF
   - role: control-plane
+    kubeadmConfigPatches:
+    - |
+      kind: InitConfiguration
+      nodeRegistration:
+        kubeletExtraArgs:
+          node-labels: "ingress-ready=true"
+    extraPortMappings:
+    - containerPort: 80
+      hostPort: ${ingress_http_port}
+      protocol: TCP
+    - containerPort: 443
+      hostPort: ${ingress_https_port}
+      protocol: TCP
 EOF
+    else
+      # shellcheck disable=SC2086
+      cat >>${config} <<EOF
+  - role: control-plane
+EOF
+    fi
   done
 
   local workers=${WORKERS:-3}
@@ -61,8 +92,6 @@ EOF
   - role: worker
 EOF
   done
-
-  echo -n "${config}"
 }
 
 function octopus::cluster_kind::startup() {
@@ -78,10 +107,9 @@ function octopus::cluster_kind::startup() {
 
   octopus::log::info "creating ${CLUSTER_NAME} cluster with ${K8S_VERSION}"
   # setup cluster
-  local config
-  config=$(octopus::cluster_kind:setup_configuration)
+  octopus::cluster_kind:setup_configuration
   local kind_image="kindest/node:${K8S_VERSION}"
-  kind create cluster --name "${CLUSTER_NAME}" --config "${config}" --image "${kind_image}" --wait 5m
+  kind create cluster --name "${CLUSTER_NAME}" --config "/tmp/kind-${CLUSTER_NAME}-cluster-config.yaml" --image "${kind_image}" --wait 5m
 
   octopus::log::info "${CLUSTER_NAME} cluster's kubeconfig has wrote in the ~/.kube/config"
 }

hack/lib/util.sh

@@ -62,3 +62,25 @@ function octopus::util::get_arch() {
 
   echo -n "${arch}"
 }
+
+function octopus::util::get_random_port_start() {
+  local offset="${1:-1}"
+  if [[ ${offset} -le 0 ]]; then
+    offset=1
+  fi
+
+  while true; do
+    random_port=$((RANDOM % 10000 + 50000))
+    for ((i = 0; i < offset; i++)); do
+      if nc -z 127.0.0.1 $((random_port + i)); then
+        random_port=0
+        break
+      fi
+    done
+
+    if [[ ${random_port} -ne 0 ]]; then
+      echo "${random_port}"
+      break
+    fi
+  done
+}

template/adaptor/Dockerfile.dapper

@@ -1,6 +1,6 @@
 FROM golang:1.13.9-buster
 RUN apt-get update && \
-    apt-get install -y xz-utils unzip
+    apt-get install -y xz-utils unzip netcat
 
 # -- for make rules
 ## install docker