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Support DynamoDB tables in other regions

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This commit is contained in:
John Gardiner Myers 2023-06-12 19:29:34 -07:00
parent 5aae0af68a
commit 1a4c7b5f3c
3 changed files with 10 additions and 1 deletions
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1
docs/registry/dynamodb.md
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@ -6,6 +6,7 @@ The DynamoDB registry stores DNS record metadata in an AWS DynamoDB table.
By default, the DynamoDB registry stores data in the table named `external-dns`.
A different table may be specified using the `--dynamodb-table` flag.
A different region may be specified using the `--dynamodb-region` flag.
The table must have a partition (hash) key named `k` and string type.
The table must not have a sort (range) key.

7
main.go
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@ -25,6 +25,7 @@ import (
"syscall"
"time"
awsSDK "github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/dynamodb"
"github.com/aws/aws-sdk-go/service/route53"
@ -397,7 +398,11 @@ func main() {
var r registry.Registry
switch cfg.Registry {
case "dynamodb":
r, err = registry.NewDynamoDBRegistry(p, cfg.TXTOwnerID, dynamodb.New(awsSession), cfg.AWSDynamoDBTable, cfg.TXTCacheInterval)
config := awsSDK.NewConfig()
if cfg.AWSDynamoDBRegion != "" {
config = config.WithRegion(cfg.AWSDynamoDBRegion)
}
r, err = registry.NewDynamoDBRegistry(p, cfg.TXTOwnerID, dynamodb.New(awsSession, config), cfg.AWSDynamoDBTable, cfg.TXTCacheInterval)
case "noop":
r, err = registry.NewNoopRegistry(p)
case "txt":

3
pkg/apis/externaldns/types.go
View File

@ -93,6 +93,7 @@ type Config struct {
AWSPreferCNAME bool
AWSZoneCacheDuration time.Duration
AWSSDServiceCleanup bool
AWSDynamoDBRegion string
AWSDynamoDBTable string
AzureConfigFile string
AzureResourceGroup string
@ -256,6 +257,7 @@ var defaultConfig = &Config{
AWSPreferCNAME: false,
AWSZoneCacheDuration: 0 * time.Second,
AWSSDServiceCleanup: false,
AWSDynamoDBRegion: "",
AWSDynamoDBTable: "external-dns",
AzureConfigFile: "/etc/kubernetes/azure.json",
AzureResourceGroup: "",
@ -581,6 +583,7 @@ func (cfg *Config) ParseFlags(args []string) error {
app.Flag("txt-wildcard-replacement", "When using the TXT registry, a custom string that's used instead of an asterisk for TXT records corresponding to wildcard DNS records (optional)").Default(defaultConfig.TXTWildcardReplacement).StringVar(&cfg.TXTWildcardReplacement)
app.Flag("txt-encrypt-enabled", "When using the TXT registry, set if TXT records should be encrypted before stored (default: disabled)").BoolVar(&cfg.TXTEncryptEnabled)
app.Flag("txt-encrypt-aes-key", "When using the TXT registry, set TXT record decryption and encryption 32 byte aes key (required when --txt-encrypt=true)").Default(defaultConfig.TXTEncryptAESKey).StringVar(&cfg.TXTEncryptAESKey)
app.Flag("dynamodb-region", "When using the DynamoDB registry, the AWS region of the DynamoDB table (optional)").Default(cfg.AWSDynamoDBRegion).StringVar(&cfg.AWSDynamoDBRegion)
app.Flag("dynamodb-table", "When using the DynamoDB registry, the name of the DynamoDB table (default: \"external-dns\")").Default(defaultConfig.AWSDynamoDBTable).StringVar(&cfg.AWSDynamoDBTable)
// Flags related to the main control loop