Tux Machines
today's howtos
Posted by Roy Schestowitz on Feb 04, 2024
Establishing Passwordless SSH Access between Servers Using Key Pairs
Setting up SSH access between servers using key pairs is a secure and efficient way to manage remote connections. This guide will walk you through generating SSH keys on your local machine and then using them to enable passwordless login to the destination server using ssh-copy-id.
LinuxSecurity ☛ Kubernetes Security Best Practices for 2024
The dynamic Kubernetes security landscape has given rise to several trends shaping how organizations approach this increasingly critical area. The aim of Kubernetes security is to prevent unauthorized access, foster data privacy, and protect the integrity of a Kubernetes environment. Robust Kubernetes security requires a defense-in-depth approach, including measures such as access control , network policies, resource isolation, and security context. Let's explore best practices you can implement to secure your Kubernetes clusters and the workloads and data running within them in 2024.
HowTo Geek ☛ How to Flush Your DNS Cache in Ubuntu
The domain name system (DNS) service eats names and spits out numbers. It’s the service that lets us talk about network names or internet domain names, instead of learning a load of IP addresses. The DNS service translates internet domain names into IP addresses so that our connection requests and network traffic can be directed toward the correct server. Matching names to IP addresses is called resolving.
Internet DNS lookups are cascaded through a hierarchy of servers, known as precursor DNS servers, root name servers, top-level domain servers, and authoritative name servers. Lookups are very fast, but they’re not instantaneous.
To reduce the time it takes to return an answer to a DNS request, precursor DNS servers cache their most recent queries and answers. If someone has recently made the same DNS request, the server can return that value to your computer without having to involve any of the other servers.
Your router at home probably caches local network device names and IP addresses, and it may even cache responses from external DNS servers.
Medium ☛ Cracking the Code: Navigating Complex Linux Interview Questions
I have always harbored the intention to document my thoughts, ideas, and life experiences. This endeavor is not merely motivated by the clichéd notion of giving back to the society from which I have gained immensely, but also to foster greater clarity within myself. Writing enhances one’s clarity of thought, thereby enriching both the writer and the reader. Moving forward, I aspire to engage in more of both writing and reading.