Use Hostname instead of IP to install k8s

[iec.git] / src / foundation / scripts / k8s_master.sh

diff --git a/src/foundation/scripts/k8s_master.sh b/src/foundation/scripts/k8s_master.sh
index ab9a289..13b76cd 100755 (executable)
--- a/src/foundation/scripts/k8s_master.sh
+++ b/src/foundation/scripts/k8s_master.sh
@@ -1,7 +1,14 @@
 #!/bin/bash -ex
+# shellcheck source=/dev/null
 
 # For host setup as Kubernetes master
-MGMT_IP=$1
+# Use the src of the default route as the default local IP
+DEF_SRC_IP=$(ip route get 8.8.8.8 | awk '{ for (nn=1;nn<=NF;nn++) if ($nn~"src") print $(nn+1) }')
+MGMT_IP=${1:-${DEF_SRC_IP}}
+MGMT_HOST=$(nslookup $MGMT_IP | grep "in-addr.arpa" | cut -d " " -f 3 | awk '{ print substr( $0, 1, length($0)-1 ) }')  || true
+#MGMT_HOST=$(nslookup $MGMT_IP | grep "in-addr.arpa" | cut -d " " -f 3 | sed 's/.$//') || true
+echo $MGMT_HOST
+
 POD_NETWORK_CIDR=${2:-192.168.0.0/16}
 SERVICE_CIDR=${3:-172.16.1.0/24}
 
@@ -10,11 +17,20 @@ if [ -z "${MGMT_IP}" ]; then
   exit 1
 fi
 
-if ! kubectl get nodes; then
+if [ -z "${MGMT_HOST}" ]; then
+  echo "MGMT HOST is not set, using MGMT_IP instead."
+  MGMT_HOST=$MGMT_IP
+fi
+
+if ! kubectl get nodes --request-timeout=3s; then
   sudo kubeadm config images pull
+  #sudo kubeadm init \
+  #  --pod-network-cidr="${POD_NETWORK_CIDR}" \
+  #  --apiserver-advertise-address="${MGMT_IP}" \
+  #  --service-cidr="${SERVICE_CIDR}"
   sudo kubeadm init \
     --pod-network-cidr="${POD_NETWORK_CIDR}" \
-    --apiserver-advertise-address="${MGMT_IP}" \
+    --apiserver-advertise-address="${MGMT_HOST}" \
     --service-cidr="${SERVICE_CIDR}"
 
   if [ "$(id -u)" = 0 ]; then
@@ -25,7 +41,8 @@ if ! kubectl get nodes; then
   fi
 
   mkdir -p "${HOME}/.kube"
-  sudo cp /etc/kubernetes/admin.conf "${HOME}/.kube/config"
+  # shellcheck disable=SC2216
+  yes | sudo cp -rf /etc/kubernetes/admin.conf "${HOME}/.kube/config"
   sudo chown "$(id -u)":"$(id -g)" "${HOME}/.kube/config"
 
   sleep 5