Improve WordOps server ip check

wo/cli/plugins/stack_pref.py

@@ -22,6 +22,7 @@ from wo.core.template import WOTemplate
 from wo.core.variables import WOVar
 from wo.core.stackconf import WOConf
 from wo.core.download import WODownload
+from wo.core.checkfqdn import WOFqdn
 
 
 def pre_pref(self, apt_packages):
@@ -404,7 +405,9 @@ def post_pref(self, apt_packages, packages, upgrade=False):
                                    "/var/www/22222/cert/22222.key;\n"
                                    "ssl_stapling off;\n")
 
-                server_ip = requests.get('http://v4.wordops.eu')
+                server_ip = WOFqdn.get_server_ip(self)
+                if server_ip is None:
+                    server_ip = "0.0.0.0"
 
                 if set(["nginx"]).issubset(set(apt_packages)):
                     print("WordOps backend configuration was successful\n"

wo/core/checkfqdn.py

@@ -4,7 +4,10 @@ from wo.core.shellexec import WOShellExec
 from wo.core.variables import WOVar
 
 
-def check_fqdn(self, wo_host):
+class WOFqdn:
+    """IP and FQDN tools for WordOps"""
+
+    def check_fqdn(self, wo_host):
         """FQDN check with WordOps, for mail server hostname must be FQDN"""
         # wo_host=os.popen("hostname -f | tr -d '\n'").read()
         if '.' in wo_host:
@@ -21,11 +24,11 @@ def check_fqdn(self, wo_host):
 
         else:
             wo_host = input("Enter hostname [fqdn]:")
-        check_fqdn(self, wo_host)
+            WOFqdn.check_fqdn(self, wo_host)
 
-
-def check_fqdn_ip(self):
+    def check_fqdn_ip(self):
         """Check if server hostname resolved server IP"""
+        try:
             x = requests.get('http://v4.wordops.eu')
             ip = (x.text).strip()
 
@@ -34,3 +37,17 @@ def check_fqdn_ip(self):
             ip_fqdn = (y.text).strip()
 
             return bool(ip == ip_fqdn)
+        except requests.exceptions.RequestException as e:
+            print("Error occurred during request:", e)
+            return False
+
+    def get_server_ip(self):
+        """Get the server externet IP"""
+        try:
+            x = requests.get('http://v4.wordops.eu')
+            ip = (x.text).strip()
+
+            return ip
+        except requests.exceptions.RequestException as e:
+            print("Error occurred during request:", e)
+            return None