Hetzner cloud administration GUI -

Figure 965. Preliminary: Create an ssh key pair

sdiuser@martin-pc-dachboden:~$ ssh-keygen -t ed25519 ❶
Generating public/private ed25519 key pair.
Enter file in which to save the key (/home/sdiuser/.ssh/id_ed25519): 
Created directory '/home/sdiuser/.ssh'.
Enter passphrase (empty for no passphrase): ❷
Enter same passphrase again: 
Your identification has been saved in /home/sdiuser/.ssh/id_ed25519 ❸
Your public key has been saved in /home/sdiuser/.ssh/id_ed25519.pub ❹

❶	Create an elliptic rather than default RSA type key.
❷	Security aware folks will choose a decent passphrase protecting the private key being generated.
❸	The generated private key.
❹	The generated public key. Note Different implementations like e.g. putty may use different key storage formats.

Figure 966. Create a Hetzner account

Sign up at https://accounts.hetzner.com/signUp using an account name of your choice.
Optionally: Activate 2-factor authentication.
You may validate your account by ID card or similar. No payment required!
Publish your Hetzner account's username to your SDI course's group at https://learn.mi.hdm-stuttgart.de.

Figure 967. Access your project space

Upon confirmation your Hetzner project space sdi_gxy (e.g. sdi_g01 corresponding to group 1) should be accessible.

Figure 968. Create a server

Create a default firewall allowing ping and ssh
Ubuntu latest
Shared vCPU / x86 / CX11 (the cheapest)
Add your personal ssh public key from Figure 965, “Preliminary: Create an ssh key pair ”

Omit volume, labels and cloud config
Note the Networking / Public IPv4 address for later reference
Click »Create & Buy now«

Figure 969. Access your server

Ping your server:

Note

The IP 91.107.232.156 serves just as a sample value irrespective of your individual actual server IP.

sdiuser:~$ ping 91.107.232.156
PING 91.107.232.156 (91.107.232.156) 56(84) bytes of data.
64 bytes from 91.107.232.156: icmp_seq=1 ttl=49 time=18.3 ms
64 bytes from 91.107.232.156 ...

Login via ssh:
```
ssh root@91.107.232.156
```

Figure 970. Update and reboot

apt update
apt upgrade
reboot

Figure 971. Install a web server

root@topsy:~# apt install nginx

Figure 972. Check local http web access

root@topsy:~# wget -O - 91.107.232.156
--2024-04-07 18:59:13--  http://91.107.232.156/
Connecting to 91.107.232.156:80... connected.
<html>
<head>
<title>Welcome to nginx!</title> ...

Figure 973. External http web access

Point your browser to http://91.107.232.156.

sdiuser:~$ telnet 91.107.232.156 80
Trying 91.107.232.156...

Why is there no answer?

Figure 974. Add port 80 / http firewall rule

sdiuser:~$ telnet 91.107.232.156 80
Trying 91.107.232.156...
Connected to 91.107.232.156.
Escape character is '^]'

Congrats: External Browser access is working now!

Figure 975. Cleaning up!

Caution

This is about $$$ MONEY $$$

Delete your server including the IPv4 address.
You may delete your firewall

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