NapalmMultipleDevices

Author: JanSkrabala

NapalmMultipleDevices

@@ -0,0 +1,88 @@
+from napalm import get_network_driver
+from netmiko.ssh_exception import NetMikoTimeoutException
+from paramiko.ssh_exception import SSHException
+from netmiko.ssh_exception import AuthenticationException
+
+
+def devices():
+    with open('devices') as f:
+        devices_list = f.read().splitlines()
+        return devices_list
+
+
+def user_pass():
+    username = input("enter your username: ")
+    password = input("enter your password: ")
+    return username, password
+
+
+def commands():
+    with open('commands') as f:
+        commands_to_send = f.read()
+        return commands_to_send
+
+
+def main():
+    print("Devices to be configured: ")
+    print(devices())
+    print("*" * 100)
+    print("Currently loaded configuration:\n")
+    print(commands())
+    print("\n")
+
+    u, p = user_pass()
+
+    for device in devices():
+
+        try:
+            driver = get_network_driver('ios')
+            ios = driver(device, u, p)
+            ios.open()
+
+        except (AuthenticationException):
+            print('Authentication failure: ' + device)
+            continue
+        except (NetMikoTimeoutException):
+            print('Timeout to device: ' + device)
+            continue
+        except (EOFError):
+            print('End of file while attempting device ' + device)
+            continue
+        except (SSHException):
+            print('SSH Issue. Are you sure SSH is enabled? ' + device)
+            continue
+        except Exception as unknown_error:
+            print('Unspecified error: ' + str(unknown_error))
+            continue
+
+        ios_output = ios.get_facts()
+        os_version = ios_output.get("os_version", "")
+        hostname = ios_output.get("hostname", "")
+        fqdn = ios_output.get("fqdn", "")
+
+        print("*" * 100)
+        print(f"""Accessing
+                    {hostname}
+                    {device}
+                    {fqdn}
+                    {os_version}
+                    """)
+
+        ios.load_merge_candidate(filename='commands')
+        diffs = ios.compare_config()
+
+        if len(diffs) > 0:
+            print(diffs)
+            print("\n")
+            print(f"you are conected to: ", {hostname}, {device})
+            ios.commit_config()
+            ios.close()
+
+        else:
+            print("No change is required")
+            ios.discard_config()
+            ios.close()
+
+
+if __name__ == "__main__":
+    main()