Update current feature

Author: fjammes

labs/0_kubeadm/exercice-kubeadm.md

@@ -1,3 +1,6 @@
+#!/bin/bash
+# This script creates two instances on Scaleway and updates the SSH config file to include them.
+
 set -euxo pipefail
 
 INSTANCE_TYPE="DEV1-L"
@@ -7,5 +10,31 @@ for i in $(seq 1 2); do
   INSTANCE_NAME="k8s-$i"
   echo "Creating instance $INSTANCE_NAME..."
 
-  scw instance server create zone="fr-par-1" image=$DISTRIBUTION type="$INSTANCE_TYPE" name=$INSTANCE_NAME
+  scw instance server create zone="fr-par-1" image=$DISTRIBUTION type="$INSTANCE_TYPE" ip="$ip_id" name=$INSTANCE_NAME
+  instance_id=$(scw instance server list | grep $INSTANCE_NAME | awk '{print $1}')
+  ip_address=$(scw instance server wait "$instance_id" | grep PublicIP.Address | awk '{print $2}')
+
+  CONFIG=~/.ssh/config
+  HOST_ENTRY="Host $INSTANCE_NAME"
+  HOSTNAME_LINE="  HostName $ip_address"
+  USER_LINE="  User ubuntu"
+
+  # Update ~/.ssh/config to add the new instance
+  if grep -q "^Host $INSTANCE_NAME\$" "$CONFIG"; then
+    # Update HostName line for existing Host entry
+    awk -v host="$INSTANCE_NAME" -v hostname="$HOSTNAME_LINE" '
+      $0 == "Host "host {print; inhost=1; next}
+      inhost && $1 == "HostName" {$0=hostname; inhost=0}
+      {print}
+    ' "$CONFIG" > "$CONFIG.tmp" && mv "$CONFIG.tmp" "$CONFIG"
+  else
+    # Add new Host entry
+    {
+      echo "$HOST_ENTRY"
+      echo "$HOSTNAME_LINE"
+      echo "$USER_LINE"
+    } >> "$CONFIG"
+  fi
+
+  echo "Updated ~/.ssh/config for $INSTANCE_NAME"
 done