Also serves as a memorandum

What to do this time

--VPS installed on ConoHa --Create user --Ssh key creation, client side settings --Ssh connection

VPS installed on ConoHa

First, install the VPS. If you do not have a ConoHa account, please do so first. Log in to the control panel and select:

--Select CentOS (8.0) as the OS --Select a plan --Enter root password and name tag --The optional SSH Key is "not used"

Choose a plan that meets your requirements. If there is no problem, press Add and VPS will be installed.

Make a note of the IP address when the installation is complete. Used in matters.

Create user

$ ssh [email protected] -p 22
#password input
[[email protected] ~]#

Once you can log in to the server, create a user.

$ adduser hogeuser           #User created
$ passwd hogeuser            #Set a password for the created user
$ gpasswd -a hogeuser wheel  #Add to wheel group
$ su hogeuser                #Login confirmation

Ssh key creation, client side settings

Once the user has been created, allow the client to make an SSH connection.

Edit sshd_config

$ sudo vim /etc/ssh/sshd_config

RSAAuthentication yes                         #add to
PubkeyAuthentication yes                      #Remove if commented out
AuthorizedKeysFile      .ssh/authorized_keys  #Remove if commented out

After setting, restart the service.

$ sudo service sshd restart

Creating an SSH key

Create it on the server and set it on the client.

Server side

#First, create a directory to install the SSH key
$ cd ~
$ mkdir .ssh
$ chmod 700 .ssh
$ cd .ssh

#Creating an SSH key
$ ssh-keygen -t rsa -b 4096
Enter file in which to save the key:  #Private key name (optional)
Enter passphrase:                     #Passphrase
Enter same passphrase again:          #Confirm passphrase

#Rename the created public key
$ mv id_rsa.pub authorized_keys
$ chmod 600 authorized_keys
$ cat id_rsa  #Make a copy of the contents of the private key

Client side

#Create a private key
$ cd ~/.ssh
$ vim id_rsa  #Paste the contents of the private key copied on the server
$ chmod 600 id_rsa

In addition, set the connection information in config.

`~/.ssh/config`


conoha
  Host xxx.xxx.xxx.xxx
  User hogeuser
  Port 22
  IdentityFile ~/.ssh/id_rsa

SSH connection

$ ssh conoha
Enter passphrase for key '/Users/xxxxx/.ssh/conoha': #Enter passphrase
[hogeuser@xxx-xxx-xxx-xxx ~]$                        #Successful connection

[CENTOS] I tried adding VPS to ConoHa ~ SSH connection