How to Allow Docker Ports with iptables ?

By following the steps in this guide, you can easily allow Docker ports with iptables. This will allow you to access your Docker containers from outside your network, while still maintaining a secure environment.

For more information on iptables, please refer to the iptables documentation: https://linux.die.net/man/8/iptables.

Error Spawn Sendmail ENOENT - How to fix this issue ?

In fact, the error message Error: spawn /usr/sbin/sendmail ENOENT can occur for a few reasons. 

If you are getting this error, you can try the following steps to resolve it:

  • Check if the sendmail command is installed.
  • If the sendmail command is not installed, install it using your package manager.
  • Once the sendmail command is installed, add it to the system path.
  • Check if you have permission to execute the sendmail command. If you do not have permission, change the permissions so that you do have permission.

We hope this helps! Let us know if you have any other questions.

Challenge Failed for Domain in Certbot Apache - How to fix it ?

In this guide, we have covered the steps on how to fix the Challenge failed for domain error in Certbot Apache. We have also provided some troubleshooting tips that you can try if you are still getting the error after following these steps.

Here are some additional resources that you may find helpful:

We hope this guide has been helpful and Thank you for reading !

How to setup a VM as a NAT network in Proxmox with All internal IPs handled by DNSmasq ?

In this guide, you have learnt how to configure DNSmasq to provide DHCP service and how to configure Pi-hole to use DNSmasq as its upstream DNS server.

By following these steps, you can easily create a private network for your virtual machines that can access the internet and have their DNS requests resolved by Pi-hole.

Set Up and use and DNS for Virtual Machines on a NAT Network in Proxmox - How to do it ?

In this guide, we showed you how to set up virtual machines on a NAT network in Proxmox.

PostgreSQL initdb: cannot be run as root error - How to fix it ?

In fact, The PostgreSQL initdb: cannot be run as root error is a common error that can occur when you try to initialize a PostgreSQL database.

To resolve this error, you need to run the initdb command as a non-root user.

You can do this by logging in to your system as a non-root user, or by using the sudo command to run the initdb command as a non-root user.