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第 9 章 Setting up a static networking configuration by using cloud-init

You can set up network configuration with cloud-init by adding a network-interfaces section to the metadata.

Red Hat Enterprise Linux (RHEL) provides its default networking service through NetworkManager, a dynamic network control and configuration daemon that keeps network devices and connections up and active when they are available.

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注意

Your datasource might provide a network configuration. For details, see the cloud-init section Network Configuration Sources.

If you do not specify network configuration for cloud-init and have not disabled network configuration, cloud-init tries to determine if any attached devices have an existing connection. If it finds a connected device, it generates a network configuration that issues a DHCP request on the interface. Refer to the cloud-init documentation section Fallback Network Configuration for more information.

Prerequisites

  • Depending on the requirements of your datasource, edit the user-data file or add the following directive to the cloud.cfg.d directory:

    注意

    All user directives include #cloud-config at the top of the file so that cloud-init recognizes the file as containing user directives. When you include directives in the cloud.cfg.d directory, name the file *.cfg, and always include #cloud-config at the top of the file.

Procedure

  • Add a network-interfaces section. For example: 

    network:
  version: 1
  config:
    - type: physical
      name: eth0
      subnets:
        - type: static
          address: 192.0.2.1/24
          gateway: 192.0.2.254

You can disable a network configuration by adding the following information to your metadata. 

network:
  config: disabled
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