1. Problem
Today I got a new Linux server and encountered the following error when logging in to the server using the domain name:
ssh: Could not resolve hostname ***: nodename nor servname provided, or not known
2. Solve
Method 1: Use the ping command
There is a saying on the Internet that when you use the ssh command to log in to a server for the first time, you can ping this address first, let the local hosts cache the name of the address, and then try ssh login.
It turns out that this method has no effect on the situation I encountered.
Method 2: Use IP address
Since the first method is not good, I explored and tried the second method myself, which is to use the IP address to log in. The reference command is as follows:
ssh [email protected] -p 5678
This method is effective. If you don't know the server's public network IP, you can ping the domain name address first.
Method 3: Modify server configuration
The first two methods start from the client. In fact, you can also do some things on the server side, such as adding the corresponding client and allowing the specified machine to connect to the server.
3. Summary
Okay, the method has been found. Let me record it here to prevent you from scratching your head when you encounter this situation in the future. After all, there are not many hairs now.
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