route53-migrate-zone - commit version 0.1

route53-migrate-zone/README.md

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+# Introduction:
+route53-migrate-zone was created to provide an easy method of migrating Route53 zones to new zones or to new AWS accounts. There are three use cases, detailed below:
+* Migrate one domain (olddomain.com) to a new domain (newdomain.com)
+* Migrate one domain (domain.com) to the same domain in a new account (domain.com)
+* Migrate one domain (olddomain) to a new domain in a new account (newdomain.com)
+
+# Directions For Use:
+## Example of Use:
+Open the file config.ini and modify the entries within this file as desired. Then execute route53-migrate-zone as follows:
+`route53-migrate-zone.py`
+
+A config.ini file configured as follows will migrate olddomain.com to newdomain.com in the account given by the variables to_secret_key and to_zone_name.
+* from_zone_name = olddomain.com.
+* to_zone_name = newdomain.com.
+* to_zone_id = Z1U8DOWB9FJWOU
+
+- Author: Colin Johnson / colin@cloudavail.com
+- Date: 2013-06-03
+- Version 0.1
+- License Type: GNU GENERAL PUBLIC LICENSE, Version 3

route53-migrate-zone/config.ini

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+[defaults]
+
+[from_zone_values]
+#example from_access_key = AKIAIOIYFW56ZHQWAFMJ
+#example from_secret_key = M2alrqy5JSaEnpeKSkiqclaHt/VivrQYNI3zz0SF
+#example from_zone_name = olddomain.com.
+from_access_key = 
+from_secret_key = 
+from_zone_name =
+
+[to_zone_values]
+to_access_key =
+to_secret_key =
+to_zone_name =
+#example to_zone_id = Z1U8DOWB9FJWOU
+to_zone_id =

route53-migrate-zone/route53-migrate-zone.py

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+#!/usr/bin/python
+# Author: Colin Johnson / colin@cloudavail.com
+# Date: 2013-06-03
+# Version 0.1
+# License Type: GNU GENERAL PUBLIC LICENSE, Version 3
+#
+
+import boto.route53  # import boto.route53 (not just boto) - need to import correct module
+import ConfigParser  # import ConfigParser - used for getting configuration
+import re  # import re used to find/replace zone
+import sys  # used to exit python program with exit code
+import os  # used to get app_name
+
+
+def commit_record_changeset(to_zone_record_changeset):
+    try:
+        to_zone_record_changeset.commit()
+    except boto.route53.exception.DNSServerError, error:
+        sys.stdout.write("An error occured when attempting to commit records to the zone \"" + to_zone_name + "\"\n")
+        sys.stdout.write("The error message given was: " + error.error_message + ".\n")
+        exit(69)
+
+app_name = os.path.basename(__file__)
+config = ConfigParser.ConfigParser()
+config.read('config.ini')
+#functions: newzone, new account, newzone and newaccount
+functions = ["newzone", "newaccount"]
+
+#these user credentials should be read-only
+from_access_key = config.get("from_zone_values", "from_access_key")
+from_secret_key = config.get("from_zone_values", "from_secret_key")
+from_zone_name = config.get("from_zone_values", "from_zone_name")
+#
+to_access_key = config.get("to_zone_values", "to_access_key")
+to_secret_key = config.get("to_zone_values", "to_secret_key")
+to_zone_name = config.get("to_zone_values", "to_zone_name")
+#best would be to retreive the to_zone_id using to_zone_name
+to_zone_id = config.get("to_zone_values", "to_zone_id")
+
+#creates Route53Connection Object
+from_connection = boto.route53.Route53Connection(aws_access_key_id=from_access_key, aws_secret_access_key=from_secret_key)
+to_connection = boto.route53.Route53Connection(aws_access_key_id=to_access_key, aws_secret_access_key=to_secret_key)
+#creates a set of changes to be delivered to Route53
+to_zone_record_changeset = boto.route53.record.ResourceRecordSets(to_connection, to_zone_id)
+
+record_types_to_migrate = ["A", "CNAME", "MX", "TXT"]
+
+#print out all records
+try:
+    from_zone = from_connection.get_zone(from_zone_name)
+except boto.route53.exception.DNSServerError, error:
+    sys.stdout.write("An error occured when attempting to create a connection to AWS.\n")
+    sys.stdout.write("The error message given was: " + error.error_message + ".\n")
+    exit(1)
+
+from_zone_records = from_zone.get_records()
+#resource_record_dict will be used to store all resource records
+resource_record_dict = {}
+
+#get records from from_zone
+for record in from_zone_records:
+    if record.type in record_types_to_migrate:
+        if "newzone" in functions:
+            #print "Existing Record Name: " + record.name
+            record.name = re.sub(from_zone_name, to_zone_name, record.name)
+            #print "Modified Record Name: " + record.name
+        resource_record_dict[record.name] = boto.route53.record.Record(name=record.name, type=record.type, ttl=record.ttl, resource_records=record.resource_records, alias_hosted_zone_id=record.alias_hosted_zone_id, alias_dns_name=record.alias_dns_name, identifier=record.identifier, weight=record.weight, region=record.region)
+
+#commit records to to_zone
+uncommitted_change_elements = 0
+examined_record_count = 0
+migrated_record_count = 0
+
+for record in resource_record_dict:
+    examined_record_count += 1
+    #if record is an alias record we are not supporting yet
+    if resource_record_dict[record].alias_dns_name is not None:
+        sys.stdout.write("Record \"" + resource_record_dict[record].name + "\" is an alias record set and will not be migrated. " + app_name + " does not currently support alias record sets.\n")
+    else:
+        uncommitted_change_elements += 1
+        to_zone_record_changeset.add_change_record("CREATE", resource_record_dict[record])
+    #DEBUG: print "Uncommitted Record Count:" + str(uncommitted_change_elements)
+    #if there are 99 uncomitted change elements than they must be committed - Amazon only accepts up to 99 change elements at a given time
+    #if the number of examined records is equal to the number of records then we can commit as well - we are now done examing records
+    if uncommitted_change_elements >= 99 or examined_record_count == len(resource_record_dict):
+        #DEBUG: print "Flushing Records:" + str(uncommitted_change_elements)
+        commit_record_changeset(to_zone_record_changeset)
+        migrated_record_count += uncommitted_change_elements
+        uncommitted_change_elements = 0
+        to_zone_record_changeset = None
+        to_zone_record_changeset = boto.route53.record.ResourceRecordSets(to_connection, to_zone_id)
+
+print "Summary:"
+print "Records Migrated from zone: \"" + from_zone_name + "\" to zone: \"" + from_zone_name + "\"."
+print "Types of Records Selected for Migration: " + str(record_types_to_migrate) + "."
+print "Records Migrated: " + str(migrated_record_count) + "."
+print "Records Examined: " + str(examined_record_count) + "."