Error When Installing Webmin Control Panel

Question

I was doing tutorial How To Install Webmin on Ubuntu 20.04 https://www.digitalocean.com/community/tutorials/how-to-install-webmin-on-ubuntu-20-04

Everything was working until I got to the portion "Step 2 — Adding a Valid Certificate with Let’s Encrypt Webmin is already configured to use HTTPS, but it uses a self-signed, untrusted certificate. Let’s replace it with a valid certificate from Let’s Encrypt.

Navigate to https://your_domain:10000 in your web browser, replacing your_domain with the domain name pointing to your server’s IP address."

According to installation “Webmin install complete. You can now login to https://MarketingSales:10000/ as root with your root password, or as any user who can use sudo to run commands as root.”

Went to https://MarketingSales:10000/ and got "This site can’t be reached marketingsales’s server IP address could not be found. Try:

Checking the proxy, firewall, and DNS configuration Running Windows Network Diagnostics"

I tried using my already set up domains ang got “ERROR — DOCUMENT FOLLOWS This web server is running in SSL mode. Try the URL https://MarketingSales:10000/ instead.”

What needs to be done?

Bobby · Answer

Hi there,

The error message you’re encountering usually occurs when there is a DNS resolution issue or if the Webmin service is not running properly. Here are some steps to help you troubleshoot the issue:

Ensure that you have used the correct server IP address or domain name in the URL. Replace “your_server” with your actual server’s IP address or domain name.
Make sure the Webmin service is running:

sudo systemctl status webmin

If the service is not running, start it with the following command:

sudo systemctl start webmin

Check if the port 10000 is open and listening:

sudo netstat -tuln | grep 10000

If the port is not open, make sure your firewall is not blocking the port:

# If you're using UFW
sudo ufw allow 10000/tcp

# If you're using FirewallD
sudo firewall-cmd --zone=public --add-port=10000/tcp --permanent
sudo firewall-cmd --reload

If you are using a domain name instead of an IP address, make sure that the domain name is properly pointed to the server IP address. You can check this using a DNS lookup tool or by running the following command:

nslookup your_domain_name

Replace “your_domain_name” with your actual domain name.

After performing the above steps, try accessing the Webmin interface again using the correct URL: https://your_server:10000.

If the issue persists, please provide any error messages or relevant logs to help identify the problem more accurately.

Best,

Bobby

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Error When Installing Webmin Control Panel

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