Let’s Encrypt renew error could not bind to IPv4 or IPv6. If you encounter this error when renewing Let’s Encrypt ssl certificate, maybe this post will help you. This is also an accidental error I encountered when I supported renew for a client server. And of course, the initial Let’s Encrypt installation was not done
Set up Let’s Encrypt Certbot auto renew. This article will guide you to do this. Let’s Encrypt in the past few years is no stranger to website or system administrators. It comes with the Certbot tool, it is very useful and everyone knows that you must use Certbot to renew SSL certificates every 3 months.
How to install Supervisor and manage process in Ubuntu 18? This article, I will guide you to use a tool called Supervisor. This tool allows you to manage processes in Linux. Back in my previous article on MkDocs, you can see that when we run the mkdocs serve command, the process only works at the
How to install mkdocs in Ubuntu server 18.04? MkDocs is a simple tool for building project documents. It uses markdown-style source documents and builds them into HTML documents. In this article, I will not guide you how to write markdown documents. I will guide you to install mkdocs in Ubuntu 18.04 and use it to
snx: error while loading shared libraries: libX11.so.6: cannot open shared object file: No such file or directory. This is an error I encountered when installing Check Point VPN client on Linux Mint 19. This article, I will show you how to fix this error. First, I have successfully installed Check Point VPN client on Linux
Run VirtualBox virtual machine in background mode. If you’ve ever used VMWare WorkStation, you probably already know that when you close the window of a virtual machine, you can choose to allow the virtual machine to run in the background. How about VirtualBox? Is it possible to do? The answer is absolutely yes. Let’s see
How to fix snx: error while loading shared libraries: libpam.so.0? If you haven’t read my previous article on how to connect Check Point VPN on a Linux computer. Chances are, you will encounter this error when installing Check Point VPN on your Linux computer. Even myself, at the first time I installed Check Point VPN
How to extend Linux LVM partition in AWS? Today I will show you how to do that. This is an accidental situation, a person asked me for help. He uses a CentOS server on AWS and it is full of root partition while disk space is still available. He wants me to help extend the
In this article, I will share with you a case where the df command shows the disk is full but it is not. Case description I am using a MariaDB cluster. On the master server number 1, I received a warning that the folder /var/log is full. I login to the server, checking with the
This article will show you how to install MariaDB 10.3 in CentOS 6. Version 10.3 is the latest MariaDB version at this time. Configure server requirements The following is the recommended configuration to use the server when installing MariaDB. OS: CentOS 6.10 (Final) 64bit. RAM: minimum 1GB memory. HDD: free more then 5GB space. Most
