Mark your ECS Ali cloud resources

ECS label basic overview

  1. The basic definition of the label
  • Meta tags are information resources, act as metadata tags are some of the words and phrases, and the system supports user-defined prefabricated. Each tag contains a key (Key) and a value (Value). Label is an attribute to describe a resource.
  • Label and resources are many relationship.
  • Category: Label tag points the user, the system label.
  • The system user may tag distinction visible or invisible, but can not be deleted or changed.
  1. Label the basic restrictions
  • Maximum key (key) length: 128 Unicode characters
  • The maximum value (value) length: 128 Unicode characters
  • Not strictly case-sensitive, it is recommended to use lowercase
  • With a key on the same resource can have only one label. If you try to add an existing label (same key), an existing label values ​​are updated to the new value.
  • Allowed characters include Unicode letters, spaces and numbers, as well as the following special characters

    1. Matching these Chinese punctuation. ? ! ,,;: '' '' () ' "<> []" "" "﹃ ﹄[

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