add connection testing early in install script

install-koji-farm.sh

@@ -32,6 +32,7 @@ fi
 SCRIPT_GIT="https://src.koozali.org/smedev/smeserver-koji/raw/branch/master/koji-setup"
 SCRIPT_DIR="$(echo ~)/bin"
 
+echo "Loading required scripts and packages...." ; fi
 mkdir -p $SCRIPT_DIR
 curl $SILENT $SCRIPT_GIT/koji-deploy-hub.sh > $SCRIPT_DIR/koji-deploy-hub.sh
 curl $SILENT $SCRIPT_GIT/koji-deploy-web.sh > $SCRIPT_DIR/koji-deploy-web.sh
@@ -48,6 +49,27 @@ if [[ -z $(dnf list installed | grep netcat) ]] ; then
     dnf install -y netcat $QUIET
 fi
 
+if [[ ! $KOJI_WEB_FQDN = $KOJI_HUB_FQDN ]] ; then
+    # check that I can conmnect
+    if [ ! nc -z $KOJI_WEB_FQDN 22 2>/dev/null ] ; then
+        echo "I cannot connect to the web server at $KOJI_WEB_FQDN! Is it online? "
+        echo "Options:"
+        echo "- turn on the server"
+        echo "- add this server into the /etc/hosts file on this server"
+        exit 1
+    fi
+fi
+for FQDN in ${KOJI_BUILD_FQDNS} ; do
+    # check that I can conmnect
+    if [ ! nc -z $FQDN 22 2>/dev/null ] ; then
+        echo "I cannot connect to builder at $FQDN! Is it online? "
+        echo "Options:"
+        echo "- turn on the server"
+        echo "- add this server into the /etc/hosts file on this server"
+        exit 1
+    fi
+done
+
 # ask for required parameters (ssh settings and build server FQDN)
 echo "Please enter the following details for generating your SSL keys"
 while true ; do