Route53 - Replace multiple IPs in multiple zones

Dependencies

• cli53

Working flow

	READ FROM		  SCRIPT	      WRITE TO
---------------------------------------------------------------------------
zones.txt,Route53     		> export.sh         > original_zones/*.zone
zones.txt,original_zones/*.zone > replace.sh        > changed_zones/*.zone
zones.txt,changed_zones/*.zone  > apply_changes.sh  > Route53
zones.txt,original_zones/*.zone > revert_changes.sh > Route53

Configurations

AWS_PROFILE: Configures the AWS profile to be used when running the scripts. The default value is default. For information about named profiles, read CLI - Named Profiles.

ORIGINAL_ZONES_FOLDER: Configure the folder where your original zone files will reside. This configuration tells export.sh where to write the zones exported from Route53. The default value is original_zones.

CHANGED_ZONES_FOLDER: Configure the folder where your changed zone files will reside. This configuration tells replace.sh where to copy the original zones files and perform the replacements. It also tells apply_changes.sh which zone files it should import to Route53. The default value is changed_zones.

ZONE_FILE_EXTENSION: Configure the zone files extension, without the leading dot. The default value is zone.

ZONES_FILE: Configure the file where the Route53 Zone IDs are defined. Each row in ZONES_FILE specifies a Route53 zone ID. The zone IDs specified there are the ones to be used by replace.sh, apply_changes.sh, and revert_changes.sh. The default value is zones.txt.

MAP_FILE: Configure the file where the IP mappings are stored. The default value is maps.txt.

MAP_SEPARTOR. Configure the separator character used to separate the OLD_IP and the NEW_IP in the MAP_FILE. The default value is ':'. Example: 10.1.1.1:172.16.0.10.

How to use?

1. Export all zone(s) specified in zones.txt from Route53 to original_zones/*.zone:

   ./export.sh

2. Define all IP replacements you want to apply to the zones stored in original_zones/*.zone. Each row in maps.txt should use the following format:

   OLD_IP:NEW_IP

Example:

10.1.1.1:172.16.0.10
10.1.1.2:172.16.0.11
10.1.1.3:172.16.0.12

3. Replace all mapped IPs locally. Each zone in original_zones/*.zone will be copied to changed_zones/*.zone and the IPs replacement will be applied only to changed_zones/*.zone:

   ./replace.sh

4. Apply the changes to Route53 by re-importing the zones from changed_zones/*.zone:

   ./apply_changes.sh

If you want to undo/revert/rollback the changes you applied to Route53 in step 4, just run:

./revert_changes.sh

This will re-import the zones from original_zones/*.zone over the existing zones in Route53.