To upload files to object storage you will need an S3 compatible client such as s3cmd or awscli. s3cmd is available in yum.
yum install s3cmd
Uploading backups to Object Storage
First, configure the S3 client.
Say "no" to testing. Save the config.
Update endpoints in the config file.
sed -i -e "/s/s3.amazonaws.com/objects.liquidweb.services/g" /root/.s3cfg
Create a bucket.
[root@hosting ~]# s3cmd mb s3://mybucket Bucket 's3://mybucket/' created
After the backup has been created you can upload files to it.
s3cmd put /backup/file.tar.gz s3://mybucket/