I'm going to walk you through the process of installing and configuring a VNC server with the help of the Ubuntu Server, version 18.04. SEE: Server deployment/migration checklist (Tech Pro. 1, Introduction Cobbler can be used to quickly batch install Linux system. Here we deploy it on centos 7 to guide batch installation of ubuntu 18.04.5-server system. In this article, I will show you how to enable SSH server on Ubuntu 18.04 LTS. Let’s get started. Installing SSH Server on Ubuntu 18.04 LTS: SSH server program must be installed on the computer that you want connect and control remotely. Since the SSH server or OpenSSH server package is available in the official package repository of Ubuntu 18.04 LTS, you can easily install it. First update the package repository. Used - sudo apt-get install openssh-serversudo service ss.

1. Ubuntu Install Ssh Server 18.04
2. Cara Install Ssh Server Ubuntu 18.04
3. Secure Ubuntu Server 16.04

In this tutorial we are going to install OpenSSH on Ubuntu 18.04. OpenSSH is most popular SSH server solution for Ubuntu Linux.

Ubuntu Install Ssh Server 18.04

In Ubuntu 18.04 server, SSH server is an option during the installation process and your Ubuntu system probably has the OpenSSH server installed already. If you are not sure, run the following command to check whether you have SSH server installed already.

If you see openssh-server in the output, SSH server is installed already. Otherwise, you can install openssh-server package with following command:

After you’ve installed the openssh-server package, check the status of the ssh service with the systemctl command:

The status should be active (running), if not run following two commands to start and enable the ssh service:

You can also run the ss command to make sure that the Ubuntu system listen on TCP port 22.

If the Ubuntu firewall is enabled, you need to add a firewall rule that allows TCP port 22 inbound.

Next: Enable SSH Root Login

Connecting to the Ubuntu via ssh command

The ssh command is a command line SSH client available in every Linux/Unix operating system. It is a very simple and easy to use SSH Client for Ubuntu Linux.

To connect to that server via SSH, execute the ssh command followed by the IP address or domain name of the Ubuntu server:

Or

The ssh command by default will try to log in to the remote server with the same username you are using on your local Linux machine. For example, if you have logged in to your local Linux machine as a root user, then the ssh command will try to connect to the remote server as the root user.

If you want to login as a different user, use the -l option:

Alternatively, you can also use the following format (username@ip-address):

On windows you can get SSH command by installing the GIT bash shell or you can use an SSH client like Putty.

Cara Install Ssh Server Ubuntu 18.04

Also by default ssh command will connect to the remote server via port 22, which is the default SSH port. If you have changed the port for SSH on your Ubuntu server, then use the -p option to specify the port to connect to on the remote host:

In the preceding example, we connect to the remote server via port 22000.

Cobbler can be used to quickly batch install Linux system. Here we deploy it on centos 7 to guide batch installation of ubuntu 18.04.5-server system.

Environmental Science:

1. System initialization

2. Install Cobbler

Some software needs to be installed.

3. Configure Cobbler

Start the Cobbler service and load and download some boot files

4. Configure dhcp

Configure DHCP template * * (pay attention to modify according to the actual network environment)**

5. Configuring tftp

Set disable to no to start tftp

6. Synchronize template files

7. Configure seed file

seed pre configuration file preparation. There are some template files in the following directory, which are commonly used sample.seed Make the standard template, and then make changes according to the actual situation. The following Ubuntu 18045. Seed is based on sample.seed It's changed.

The following is the content of the Ubuntu 18045. Seed file. (pay attention to modify according to the actual situation)

8. Import image

verification:

9. File and script preparation

Pay attention to modify according to the actual situation.

The secret key preparation is used as the secret free connection between cobbler server and node machine

System initialization script: (add and modify what you want)

apt source file sources.list , use alisource:

Graphics driver preparation

Network card configuration template file: (modify according to the actual situation)

network script, used to modify the previous network card configuration template file and apply. Execute the script on the installed system, input IP to modify the IP address of the network card, and change the dynamic address into static address. (revised according to actual situation)

10. Configure pxe default boot entry

Only the timeout is changed, and the rest is left unchanged by default.

11. Network card selection in multi network card environment

Secure Ubuntu Server 16.04

when the server has more than one network card, it will stop at where the network card is selected, which needs to be selected manually. Using netcfg / choose in seed file_ The specified bug interface does not take effect. This is a known option.
to solve this problem, if you need to pass this option to the kernel, it will work as expected, as follows:
the rest will not move, only add netcfg/choose_interface=auto instruction.

12. Start the service

1. Related documents

2. Common commands