The set_fact module in Ansible is a vital tool used in playbooks to define or alter the value of variables during playbook execution. This dynamic nature of set_fact allows for greater flexibility and adaptability in managing configurations and automating tasks. With set_fact, you can create new variables on the fly based on the output of …
DevOps
To fix the “no matching host key type found” error in SSH, you need to modify your SSH client configuration to accept the host key types offered by the SSH server. This error typically occurs when your SSH client does not support or is not configured to accept the host key types provided by the …
It was late Thursday evening when I ran into a pesky network issue on our Linux server that had me stumped for hours. We had just wrapped up deploying a new application, and suddenly, users started reporting intermittent connectivity issues. Initial checks showed no problem with the server’s software configurations, so I decided to dive …
When it comes to Amazon Web Services (AWS), S3 is one of the most popular services. This is because S3 provides a secure and scalable storage solution for businesses of all sizes. In order to ensure that your S3 buckets are sized correctly, you need to understand how to calculate their size. In this blog …
Recently, I encountered a strange problem when executing the binary file protoc, which resulted in the error “no such file or directory: ./protoc”. The file was clearly there, but the error persisted, making me wonder if there was a bug in the system. Whenever I face such bizarre issues, I tend to doubt the operating …
In Ansible, a list refers to an ordered collection of items, much like an array or a list in other programming languages. Lists are used to keep related elements grouped together for easier management and operation. You can define a list in Ansible as follows: fruits: – Apple – Banana – Orange In this example, …
In Ansible, you can check if an element is present in a list using the in keyword in a playbook or in a Jinja2 template. Here’s an example of how you can use the in keyword to check if an element is in a list in a playbook: In this example, the my_list variable is …
In the world of Linux system administration, the ability to manage and troubleshoot network interfaces is a fundamental skill. There are situations where you might encounter connectivity issues, need to apply configuration changes, or simply want to reset a network interface to its default state. In such scenarios, the knowledge of how to gracefully restart …
Core dumps are binary files that contain the memory image of a crashed process, which can be invaluable for debugging purposes. To collect a core dump file in Linux, you need to configure your system to generate core dumps when a program crashes. By default, many Linux distributions disable core dumps to save disk space …
Microsoft’s Email Breach: Implications for Cloud Security On July 11, Microsoft disclosed that a Chinese hacking group known as Storm-0558 gained unauthorized access to the email systems of various US government agencies, potentially compromising a significant number of emails. Recent reports have emerged, suggesting that the email account of the US ambassador and other high-ranking …