if centos, then disable firewalld, beacause ubuntu has no firewalld

init-server.sh

@@ -22,8 +22,11 @@ off_selinux() {
 }
 
 off_firewalld() {
-    systemctl stop firewalld.service &> /dev/null
-    systemctl disable firewalld.service &> /dev/null
+    THE_OS=$(awk -F= '/^NAME/{print $2}' /etc/os-release)
+    if [ "$THE_OS" == "\"CentOS Linux\"" ];then
+        systemctl stop firewalld.service &> /dev/null
+        systemctl disable firewalld.service &> /dev/null
+    fi
 }
 
 increase_file_limits() {