SSH password-free login to remote server

Experimental background:

In our actual production, we often need to formulate a reliable password-free login environment, SSH's own public key is our common choice.

Lab Environment:

Virtual machine VMware Workstation under the conditions of the player

Client: centos6.4 system, the system comes with SSH software, ip:192.168.0.24 netmask:255.255.255.0

Server-side: centos6.4 system, the system comes with SSH software, ip:192.168.0.25 netmask:255.255.255.0

For ease of operation I am using the securecrt Remote Connection tool

Let me first introduce that SSH is commonly used when we connect to the Management Server remotely.

One, no time to add SSH trust:

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Commands for remote connections:

SSH user name @ IP of the server you want to connect to

The first time you connect, you'll need to enter Yes

Ifconfig |grep "inet addr" |cut-d ': '-f 2|cut-d '-F 1

The above command is to make sure that we do log in to view all IP of the host, and you can see that I have two NICs and a loopback address 127.0.0.1

Here is the command to get the IP for a network card.

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Second, Add SSH Trust

Exit the connection you just made

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1. We generate the key

Executing commands on the client

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View our generated keys, typically generated keys in the/ROOT/.SSH directory

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You can see that we did not enter the password on the login success! We don't need a password to log on to the server in the future.

So let's take a look at the Execute command: ssh-copy-id-i/root/.ssh/id_rsa.pub [email protected] What was generated on the server side.

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Of course we can create this file ourselves, this blog will not be introduced. I can Baidu search for a bit.

Thank you, I hope we can help you.

This article is from the "Make a few" blog, be sure to keep this source http://9399369.blog.51cto.com/9389369/1745724

SSH password-free login to remote server