autoconf: validate the nagios server address in auto-config

  Currently Nagios server address entered by the user during
auto config was not being verified. This patch helps to verify
the address entered by the user.

  If IP address is given as the nagios server address then it
checks the pattern and verifies that it is mapped to one of the
non loopback device in the host

  If user enters fqdn name, then it tries to resolve it,
also it verifies that resolved IP address maps to one of
the non loopback device in the host.

Bug-Url: https://bugzilla.redhat.com/1127657
Change-Id: I88d67cc6d8fa05f2934922fbc0d8e757b1d73e43
Signed-off-by: Ramesh Nachimuthu <rnachimu@redhat.com>
Reviewed-on: http://review.gluster.org/7740
Reviewed-by: darshan n <dnarayan@redhat.com>
Reviewed-by: Sahina Bose <sabose@redhat.com>

1 files changed, 17 insertions, 17 deletions

diff --git a/plugins/discovery.py b/plugins/discovery.py
index 46fee95..b17c81f 100755
--- a/plugins/discovery.py
+++ b/plugins/discovery.py
@@ -21,11 +21,13 @@ import datetime
 import os
 import shutil
 import sys
+import socket
 
 from glusternagios import utils
 from glusternagios.glustercli import HostStatus
 from config_generator import GlusterNagiosConfManager
 import server_utils
+import network_utils
 import submit_external_command
 from constants import DEFAULT_AUTO_CONFIG_DIR
 from constants import NAGIOS_CONFIG_FILE
@@ -432,23 +434,21 @@ def getNagiosAddress(clusterName):
         nagiosAddress = autoConfigService['check_command'].split("!")[2]
         return nagiosAddress
 
-    (returncode, outputStr, err) = utils.execCmd([utils.hostnameCmdPath.cmd,
-                                                  '--fqdn'])
-    if returncode == 0:
-        default = outputStr[0]
-    else:
-        (returncode, outputStr, err) = utils.execCmd(
-            [utils.hostnameCmdPath.cmd, '-I'])
-        if returncode == 0:
-            default = outputStr[0]
-    if default:
-        msg = "Enter Nagios server address [%s]: " % (default.strip())
-    else:
-        msg = "Enter Nagios server address : "
-    ans = raw_input(msg)
-    if not ans:
-        ans = default
-    return ans
+    return getHostAddress()
+
+
+def getHostAddress():
+    fqdn = socket.getfqdn()
+    while True:
+        msg = 'Enter Nagios server address [%s]: ' % fqdn
+        address = raw_input(msg)
+        if not address:
+            address = fqdn
+        validationMsg = network_utils.validateHostAddress(address)
+        if validationMsg:
+            print 'Host address is not valid: %s' % validationMsg
+        else:
+            return address
 
 
 def getConfirmation(message, default):