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CLI to add DNS Records in Route53
#!/bin/bash
## Allows for creation of "Basic" DNS records in a Route53 hosted zone
function main() {
zone_name=$1
record_name=$2
record_value=$3
[[ -z $record_value ]] && usage && exit 1
## set some defaults if variables haven't been overridden on script execute
action=${action:-CREATE}
record_type=${record_type:-A}
ttl=${ttl:-300}
wait_for_sync=${wait_for_sync:-false}
change_id=$(submit_resource_record_change_set) || exit 1
echo "Record change submitted! Change Id: $change_id"
if $wait_for_sync; then
echo -n "Waiting for all Route53 DNS to be in sync..."
until [[ $(get_change_status $change_id) == "INSYNC" ]]; do
echo -n "."
sleep 5
done
echo "!"
echo "Your record change has now propogated."
fi
echo 'Thank you for using "The Cloud".'
}
function change_batch() {
jq -c -n "{\"Changes\": [{\"Action\": \"$action\", \"ResourceRecordSet\": {\"Name\": \"$record_name\", \"Type\": \"$record_type\", \"TTL\": $ttl, \"ResourceRecords\": [{\"Value\": \"$record_value\"} ] } } ] }"
}
function get_change_status() {
aws route53 get-change --id $1 | jq -r '.ChangeInfo.Status'
}
function hosted_zone_id() {
aws route53 list-hosted-zones | jq -r ".HostedZones[] | select(.Name == \"${zone_name}\") | .Id" | cut -d'/' -f3
}
function submit_resource_record_change_set() {
aws route53 change-resource-record-sets --hosted-zone-id $(hosted_zone_id) --change-batch $(change_batch) | jq -r '.ChangeInfo.Id' | cut -d'/' -f3
}
function usage() {
echo "usage: $0 <zone_name> <record_name> <record_value>"
echo ""
echo "possible env config settings and their defaults:"
echo " - action=CREATE"
echo " - ttl=300"
echo " - record_type=A"
echo " - wait_for_sync=false"
echo ""
}
main $1 $2 $3
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