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Driving home from a long day of work, I see the beautiful sky and so to not miss the beauty, I decided to pull over to take this picture. But then coming home, I was reminded of today’s challenges and I felt that it’s best to document my findings for posterity and to share it with the rest of the ...

Thanks to Linux, we have access to many tools that facilitate networking administration & diagnostics. In this sense, the Linux ping command is one of the most useful tools for sysadmins and network administrators. Its basic function is to determine if one host of the network is reachable or not. However, in this post, we will address other more advanced capabilities ...

Every organization needs to collect logs from multiple sources in order to put them in either a log collector or SIEM (or a dedicated audit trail solution). And there are two options for that – using an agent and agentless. Using an agent is easy – you install a piece of software on each machine that generates logs and it ...

In this post, we will cover many aspects of MySQL on Linux. First of all, how to install it, how to perform basic CRUD operations, how to import & export data, play with the MySQL engine itself such as setting the root user password and much more. MySQL is one of the most popular relational databases engines in the world. ...

Number 4 in my Che series… a quick guide for using Minishift, in order to test drive Che 7 or Red Hat CodeReady Workspaces. If you’re not running Windows as your host OS, your mileage may vary in terms of memory requirements and preferred virtual machine driver, but the suggestions below should work on most OSes… even the one with ...

Number 5: deploying Che 7 behind a firewall (air gap environment) using chectl –che-operator-cr-yaml=… Deploying Che 7 with custom images Unlike  Deploying Che 7 to Minishift 1.34+, this doc will explain how to do an Eclipse Che 7 deployment with a custom resource yaml file to override the images used in the deployment. This process can be used for many things, ...

For pedantic people like myself, who like to keep their Desktop tidy, I came across this tip to save screenshots to a different location automatically. Create a folder (mine is called Screenshots)Open a Terminal windowType the following: defaults write com.apple.screencapture locationDrag and drop the folder into terminal. You’ll end up something like the following: defaults write com.apple.screencapture location /Users/pkua/Desktop/ScreenshotsHit enter! ...

Overview This is to document my steps to download all image (JPG) files along with PDF and regular HTML files instead of using the web browser, using only 1 command (wget). Installation Use Choco (https://chocolatey.org/). Follow installation instructions @ https://chocolatey.org/install Then open a command prompt with administrative rights to install wget:choco install wget Usage My target website (say abc.com) is protected ...

I really like Kubernetes; I’ve been following almost since its inception 5 years ago and used it successfully in the past 3+ years in several projects. It isn’t without challenges (esp. around managing state) but it definitely getting better with each release. Moving to a new company, it is no wonder I introduced Kubernetes into our architecture from the get-go. ...