Enable retry when failed

@@ -4,6 +4,7 @@
 import smtplib
 from email.mime.text import MIMEText
 from email.header import Header
+import time
 
 
 class mailman(object):
@@ -16,11 +17,21 @@ class mailman(object):
         message['From'] = Header(From, 'utf-8') 
         message['To'] =  Header(To, 'utf-8') 
         message['Subject'] = Header(Title, 'utf-8')
-     
-        try:
-            self.smtpObj.sendmail(self.sender, receivers, message.as_string())
-            print "邮件发送成功"
-        except smtplib.SMTPException:
-            print "Error: 无法发送邮件"
+        
+        retry = 5
+        while retry>0:
+            try:
+                self.smtpObj.sendmail(self.sender, receivers, message.as_string())
+                print "邮件发送成功"
+                return True
+            except Exception as e:
+                retry-=1
+                print e
+                print "Error: 无法发送邮件"
+                print "重新发送邮件...还剩{0}次".format(retry)
+                time.sleep(10)
+        return False
 
-        return 0
+if __name__ == '__main__':
+    demo = mailman()
+    demo.mail(['tiexin.yang@yoho.cn'])

@@ -30,7 +30,7 @@ class EMRClusterScanner(object):
         self.inventoryFile = '{0}inventories/bigdata/hosts'.format(self.workDir)
         self.playbook_resolv = '{0}playbooks/resolv.yml'.format(self.workDir)
         self.mailman = mailman()
-        self.receivers = ['tiexin.yang@yoho.cn','chunhua.zhang@yoho.cn']
+        self.receivers = ['tiexin.yang@yoho.cn']#,'chunhua.zhang@yoho.cn']
         self.emrNameMap = {
             "emr-rt": "emr-r6bhtb5v",
             "emr-ops": "emr-iaeloyc2",
@@ -128,11 +128,17 @@ class EMRClusterScanner(object):
     def syncDNS(self,target='emr-recom'):
         if target == 'emr-recom': #目前只负责同步emr-recom的DNS
             cmd = 'ansible-playbook -i {0} {1}'.format(self.inventoryFile,self.playbook_resolv)
-            output = os.popen(cmd).read()
-            if 'changed=1' not in output or 'unreachable=1' in output:
-                return False
-            else:
-                return True
+            retry = 3
+            while retry > 0:
+                output = os.popen(cmd).read()
+                if 'changed=1' not in output or 'unreachable=1' in output:
+                    retry-=1
+                    print "重新同步DNS...还剩{0}次".format(retry)
+                    time.sleep(300)
+                    continue
+                else:
+                    return True
+            return False
         else:
             return True