How to pick the AWS backup SheduleExpression automatically based on the Region
defined under Mappings
Block in a CloudFormation template.
This means if i am deploying the stack in the eu-west-1
then it should automatically take sched3
and if deploying the stack in the ap-southeast-1
then it should pick the sched4
.
My CloundFormation code block:
Mappings:
RegionMap:
us-east-1:
sched1: "cron(00 19 * * ? *)"
us-west-1:
sched2: "cron(00 18 * * ? *)"
eu-west-1:
sched3: "cron(00 17 * * ? *)"
ap-southeast-1:
sched4: "cron(00 16 * * ? *)"
ap-northeast-1:
sched5: "cron(00 15 * * ? *)"
FSxBackupPlan:
Type: "AWS::Backup::BackupPlan"
Properties:
BackupPlan:
BackupPlanName: !Ref FsxBackupPlanName
BackupPlanRule:
-
RuleName: !Ref FsxBackupRuleName
TargetBackupVault: !Ref FSxBackupsVault
StartWindowMinutes: 240
ScheduleExpression: !FindInMap
- RegionMap
- !Ref 'AWS::Region'
Other way i am trying:
ScheduleExpression: !FindInMap
!If [sched1, !Ref "AWS::Region"]
I am trying to understand above but not getting it as a newbie to aws cloudformation.
You are making your life more difficult than it should be by using the extra unnecessary key.
Instead, use:
Mappings:
RegionMap:
us-east-1:
sched: "cron(00 19 * * ? *)"
us-west-1:
sched: "cron(00 18 * * ? *)"
eu-west-1:
sched: "cron(00 17 * * ? *)"
ap-southeast-1:
sched: "cron(00 16 * * ? *)"
ap-northeast-1:
sched: "cron(00 15 * * ? *)"
and:
ScheduleExpression: !FindInMap
- RegionMap
- !Ref 'AWS::Region'
- sched