IT Handyman

Because sometimes you need a little help…

Menu
Skip to content
  • Home
  • About / Contact information
  • Dulare uses…

Tag: Linux

Sending emails from Docker using Postfix installed on the Host
  • Linux

Sending emails from Docker using Postfix installed on the Host

  • Posted on 2023-05-302023-05-30
  • by dulare

In one of our projects, we have multiple Docker images working on a single host. We also use an external email provider (AWS Simple Email Service) to send our emails.…

Read More
Grub update issue after AWS instance change
  • AWS

Grub update issue after AWS instance change

  • Posted on 2022-12-142022-12-12
  • by dulare

Due to the recent updates we were performing in our client’s infrastructure, we had to adjust the instance size, so we also upgraded from the older instance type to the…

Read More
Pending update countdown in Ubuntu 22.04
  • Linux

Pending update countdown in Ubuntu 22.04

  • Posted on 2022-12-072022-12-07
  • by dulare

Have you noticed such a message recently? It is letting you know that snap is unable to update a particular application – in my case – snap-store. The behavior of…

Read More
Extend AWS EBS volume with LVM installed
  • AWS

Extend AWS EBS volume with LVM installed

  • Posted on 2022-11-162022-11-18
  • by dulare

Yes, I know that there is the documentation for this, but I found it not clear enough on the Volume Extend topic. What I wanted to do was to change…

Read More
ColdFusion 2021 CFHTTP issue – it fails every second try (or sporadically)
  • ColdFusion

ColdFusion 2021 CFHTTP issue – it fails every second try (or sporadically)

  • Posted on 2022-07-202022-07-21
  • by dulare

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…

Read More
Unable to start AWS Linux instance after instance type change – “a start job is running for…”
  • AWS

Unable to start AWS Linux instance after instance type change – “a start job is running for…”

  • Posted on 2022-03-232022-04-04
  • by dulare

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…

Read More
A quick way to check SD card speed in Linux command line
  • Linux

A quick way to check SD card speed in Linux command line

  • Posted on 2022-02-022022-02-03
  • by dulare

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…

Read More
Using Fail2ban to ban IP by Apache / Nginx response code
  • Linux

Using Fail2ban to ban IP by Apache / Nginx response code

  • Posted on 2021-10-202021-11-01
  • by dulare

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…

Read More
Remote server synchronization using lftp
  • Linux

Remote server synchronization using lftp

  • Posted on 2021-10-132021-10-25
  • by dulare

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…

Read More
Linux: find recently updated files
  • Linux

Linux: find recently updated files

  • Posted on 2021-09-222021-10-22
  • by dulare

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?…

Read More

Posts pagination

Page 1 Page 2 … Page 4 Next Page

Recent Posts

  • Sending emails from Docker using Postfix installed on the Host
  • Fuzzy search testing – using PostgreSQL compared to Qdrant vector database
  • OpenAI models fine-tuning considerations
  • Oxygen upgrade issue: Download failed. Unauthorized
  • OxyMade update failed – how to pull the license key from the database

Tags

3D printing administration Apache Arduino AWS ColdFusion databases development EC2 ESP8266 Express FriendlyTracker FTP git Handlebars IIS Infusionsoft IoT Java Javascript Linux Lucee Machine Learning MS SQL Server MySQL Node OpenAI OpenVPN programming Python Qdrant Security Selenium SQL SSL TestBox threads timelapse tips TLS Ubuntu vector database web development Windows WordPress
© Copyright 2025 – IT Handyman
Bezel Theme by SimpleFreeThemes ⋅ Powered by WordPress