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Merge pull request #26 from offen/instance-profile

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Allow s3 authentication via IAM role
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Frederik Ring 2021-09-30 19:32:54 +02:00 committed by GitHub
commit d7ccdd79fc
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2 changed files with 20 additions and 3 deletions
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7
README.md
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@ -134,6 +134,13 @@ You can populate below template according to your requirements and use it as you
# AWS_ACCESS_KEY_ID="<xxx>" # AWS_ACCESS_KEY_ID="<xxx>"
# AWS_SECRET_ACCESS_KEY="<xxx>" # AWS_SECRET_ACCESS_KEY="<xxx>"
# Instead of providing static credentials, you can also use IAM instance profiles
# or similar to provide authentication. Some possible configuration options on AWS:
# - EC2: http://169.254.169.254
# - ECS: http://169.254.170.2
# AWS_IAM_ROLE_ENDPOINT="http://169.254.169.254"
# This is the FQDN of your storage server, e.g. `storage.example.com`. # This is the FQDN of your storage server, e.g. `storage.example.com`.
# Do not set this when working against AWS S3 (the default value is # Do not set this when working against AWS S3 (the default value is
# `s3.amazonaws.com`). If you need to set a specific (non-https) protocol, you # `s3.amazonaws.com`). If you need to set a specific (non-https) protocol, you

16
cmd/backup/main.go
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@ -100,6 +100,7 @@ type config struct {
AwsEndpointInsecure bool `split_words:"true"` AwsEndpointInsecure bool `split_words:"true"`
AwsAccessKeyID string `envconfig:"AWS_ACCESS_KEY_ID"` AwsAccessKeyID string `envconfig:"AWS_ACCESS_KEY_ID"`
AwsSecretAccessKey string `split_words:"true"` AwsSecretAccessKey string `split_words:"true"`
AwsIamRoleEndpoint string `split_words:"true"`
GpgPassphrase string `split_words:"true"` GpgPassphrase string `split_words:"true"`
EmailNotificationRecipient string `split_words:"true"` EmailNotificationRecipient string `split_words:"true"`
EmailNotificationSender string `split_words:"true" default:"noreply@nohost"` EmailNotificationSender string `split_words:"true" default:"noreply@nohost"`
@ -145,12 +146,21 @@ func newScript() (*script, error) {
} }
if s.c.AwsS3BucketName != "" { if s.c.AwsS3BucketName != "" {
mc, err := minio.New(s.c.AwsEndpoint, &minio.Options{ var creds *credentials.Credentials
Creds: credentials.NewStaticV4( if s.c.AwsAccessKeyID != "" && s.c.AwsSecretAccessKey != "" {
creds = credentials.NewStaticV4(
s.c.AwsAccessKeyID, s.c.AwsAccessKeyID,
s.c.AwsSecretAccessKey, s.c.AwsSecretAccessKey,
"", "",
), )
} else if s.c.AwsIamRoleEndpoint != "" {
creds = credentials.NewIAM(s.c.AwsIamRoleEndpoint)
} else {
return nil, errors.New("newScript: AWS_S3_BUCKET_NAME is defined, but no credentials were provided")
}
mc, err := minio.New(s.c.AwsEndpoint, &minio.Options{
Creds: creds,
Secure: !s.c.AwsEndpointInsecure && s.c.AwsEndpointProto == "https", Secure: !s.c.AwsEndpointInsecure && s.c.AwsEndpointProto == "https",
}) })
if err != nil { if err != nil {