Server connection

Server connection available

INFO

An available server is a server that is not automatically initialized via the API

WARNING

Make sure you are using or creating a new Ubuntu server (20.04, 22.04, 24.04 LTS 64bit)
FlashPanel may not work on pre-installed servers.

TIP

For existing servers that are not usually updated, running the update command below before making a connection will avoid crashes during installation.

bash

apt update
apt upgrade -y

Go to page create server
Click to select Custom Server
Enter Server Name: is the server name
Enter the server's v4 IP
Select the authentication type as Password or SSH Key
WARNING
FlashPanel only uses this information during the first installation, does not store it anywhere!
1. If Password: enter SSH Password of root account
2. If SSH Key: Select private key file and fill in passphrase (if any)
  If the OpenSSH type private key file has the passphrase FlashPanel and cannot be read, please remove the passphrase from the key with the command:
  bash
```
ssh-keygen -p -f path_to_private_key
```
Select the applications to install initially
Click add server.

Connect to server via API

WARNING

If the server provider's API Key has not been registered, the connection cannot be made. Registration instructions here

Go to page create server
Select the providers that `FlashPanel supports
Select login information
Select Region, select Package
Enter the server name
Select pre-installed applications
Click connect new server

Common problems

Some server providers disable the root user by default (such as OVH), instead there is a user account such as ubuntu that can be promoted to root

To allow root login, do the following

SSH Login to the account your server provider created for you, for example ubuntu

Then copy the command below and paste it into the terminal

bash

if [ "$EUID" -ne 0 ]; then
    sudo su
fi

# Find the line in the file that contains "PermitRootLogin"
line1=$(grep -n -m 1 "^#*\s*PermitRootLogin" /etc/ssh/sshd_config | cut -d: -f1)
# Replace the line with "PermitRootLogin yes"
sed -i "${line1}s/.*/PermitRootLogin yes/" /etc/ssh/sshd_config

# Find the line in the file that contains "PasswordAuthentication"
line2=$(grep -n -m 1 "^#*\s*PasswordAuthentication" /etc/ssh/sshd_config | cut -d: -f1)
# Replace the line with "PasswordAuthentication yes"
sed -i "${line2}s/.*/PasswordAuthentication yes/" /etc/ssh/sshd_config

# Restart the ssh service to apply the changes
systemctl restart ssh

# Set the password for the root user
sudo passwd root

Return to FlashPanel and proceed to connect as instructed above.

With AWS servers, logging in with the root account will result in a message like this and the connection will be lost. Please log in to your ubuntu account and execute the following command

Switch to root user:
bash
```
sudo su
```

Delete the exit 142 line in the /root/.ssh/authorized_keys file

bash

sed -i -e 's/.*exit 142" \(.*$\)/\1/' /root/.ssh/authorized_keys

Some Azure servers disable root user password login by default. Please SSH into the server and run the following commands:

Switch to root user:
bash
```
sudo su
```

Enable PermitRootLogin:

bash

sed -i 's/^#*PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
sed -i 's/^#*PasswordAuthentication.*/PasswordAuthentication yes/' /etc/ssh/sshd_config
systemctl restart ssh
passwd root

Some Google Cloud servers disable root user password login by default. Please SSH into the server and run the following commands:

Switch to root user:
bash
```
sudo su
```

Enable PermitRootLogin:

bash

sed -i 's/^#*PermitRootLogin.*/PermitRootLogin yes/' /etc/ssh/sshd_config
sed -i 's/^#*PasswordAuthentication.*/PasswordAuthentication yes/' /etc/ssh/sshd_config
rm -f /etc/ssh/sshd_config.d/60-cloudimg-settings.conf
systemctl restart ssh
passwd root

Server connection ​