Why Are Internet or Internal Domain Names in the Cloud Inaccessible Through Domain Names When My ECS Has Multiple NICs?
When an ECS has more than one NIC, if different DNS server addresses are configured for the subnets used by the NICs, the ECS cannot access the Internet or domain names in the cloud.
You can resolve this issue by configuring the same DNS server address for the subnets used by the same ECS. You can perform the following steps to modify DNS server addresses of subnets in a VPC:
- Log in to the management console.
- On the console homepage, under Networking, click Virtual Private Cloud.
- In the navigation pane on the left, click Virtual Private Cloud.
- On the Virtual Private Cloud page, locate the VPC for which a subnet is to be modified and click the VPC name.
- In the subnet list, locate the row that contains the subnet to be modified, click Modify. On the displayed page, change the DNS server address as prompted.
- Click OK.
Connectivity FAQs
- Does a VPN Allow Communication Between Two VPCs?
- Why Are Internet or Internal Domain Names in the Cloud Inaccessible Through Domain Names When My ECS Has Multiple NICs?
- What Are the Priorities of the Custom Route and EIP If Both Are Configured for an ECS to Enable the ECS to Access the Internet?
- Why Are There Intermittent Interruptions When a Local Host Accesses a Website Built on an ECS?
- Why Do ECSs Using Private IP Addresses in the Same Subnet Only Support One-Way Communication?
- Why Does Communication Fail Between Two ECSs in the Same VPC or Packet Loss Occur When They Communicate?
- Why Can't My ECS Use Cloud-init?
- Why Can't My ECS Access the Internet Even After an EIP Is Bound?
- Why Is My ECS Unable to Communicate at a Layer 2 or Layer 3 Network?
- How Do I Handle a BMS Network Failure?
- Why Does My ECS Fail to Obtain an IP Address?
- How Do I Handle a VPN or Direct Connect Connection Network Failure?
- Why Can My Server Be Accessed from the Internet But Cannot Access the Internet?
- Why Can't I Access Websites Using IPv6 Addresses After IPv4/IPv6 Dual Stack Is Configured?
- Why Does My ECS Fail to Communicate with Other After It Has Firewall Installed?
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