Google Cloud Platform for Developers

Bucket names

Cloud Storage buckets must follow a few general naming conventions in order to be considered valid. These names must adhere to the following:

• Be between 3 and 63 characters in length (unless using domain naming)
• Only contain lowercase letters, numbers, dashes, underscores, and periods
• Begin and end with a number or letter
• Not contain anything similar to the reserved word google

Given these constraints, a resulting regular expression for validating bucket names may look something like the following:

/^[a-z0-9][a-z0-9_-]{1,61}[a-z0-9]$/