After a recent upgrade of ColdFusion 2016 to ColdFusion 2021 on one of the Linux servers, we noticed strange behavior. The CFHTTP call was sometimes working fine, and sometimes it…
Category: Linux
We’ve got a handful of “old” AWS EC2 instances, running small t2.micro, t2.nano, and t2.small instances. From time to time we have to change the instance type to a larger…
I have to prepare several Raspberry Pi boards for some of our small projects. We have a bunch of SD cards we can use. I want to determine which one…
Some of our old CMS systems are returning 403 and 404 codes when the site is attacked with various payloads. The application firewall responds on a deeper level (the application…
While moving old websites to the new webservers, we frequently need to update files on the new server. Here is the story: the new server is prepared, the site is…
I want to share with you one of the useful oneliners I’m using to find recently updated files on our Linux machines. Let’s start simple: What do we have here?…
This is rather a specific situation, but I thought that it can be useful to share our expertise since someone else can have the same problem too. In one of…
After a recent update to the OpenVPN on one of our Ubuntu-based machines, we noticed that the VPN connection stopped working. In the OpenVPN logs on the server, I found…
In my case, text processing is mostly reviewing logs and looking for things that are stored in them. Sometimes dig through the Git repository or trying to find a setting…
My old laptop has Ubuntu 20.04 installed. It is upgraded from the previous version, and I think it requires reinstallation since I constantly change something. New tools, new programs installed…