首先,确保VPC和子网配置正确。然后,检查安全组,确保允许必要的入站和出站流量。如果仍然无法ping外部或运行apt-get update,请检查NAT网关和路由表是否正确配置。下面是一个例子:
# VPC CIDR Block
10.0.0.0/16
# Public Subnet 10.0.0.0/24
# Private Subnet 10.0.1.0/24
# NAT Gateway
10.0.0.100
# Route Tables
Public Subnet Route Table:
Destination Target
10.0.0.0/16 local
0.0.0.0/0 Internet Gateway
Private Subnet Route Table:
Destination Target
10.0.0.0/16 local
0.0.0.0/0 NAT Gateway
# Security Groups
Public SG:
Inbound:
- SSH (Source: 0.0.0.0/0)
- HTTP (Source: 0.0.0.0/0)
Outbound:
- All traffic allowed
Private SG:
Inbound:
- SSH (Source: Public Subnet SG)
Outbound:
- All traffic allowed