linux - After ngxin is configured, the web page cannot be opened

Question

I bought cloud server ECS from Alibaba Cloud. The system is CentOS7.2 64-bit;
Now ping the server and domain name address; both are OK, but the web page cannot be opened;
May I ask what the problem is;
On Linux, wget domain name also prompts that the resolution failed

Answer 1

Alibaba Cloud Server can try Cloud Helper Operation and Maintenance Management

Answer 2

sdafasdfasdasdfasdf

Answer 3

fffffffffffffffffffff

Answer 4

adsfadsfadsf

Answer 5

1. Check whether the firewall has opened port 80
2. Whether the ECS security group has opened port 80

Answer 6

What does it mean if it cannot be opened? Is there a status code?

Answer 7

1. Check whether firewalld port 80 is open

firewall-cmd --zone=public --list-ports

Open the port if it is not open

firewall-cmd --zone=public --add-port=80/tcp --permanent  
firewall-cmd --reload

2. Check the security group of this instance of Alibaba Cloud backend ecs and see if port 80 is not open in the configuration rules