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[@iximiuz](/creator/twitter/iximiuz)
"Learn Linux networking containers and Kubernetes by solving hands-on problems 🛠 A curated collection of over XXX carefully crafted challenges - with interactive checks clear diagrams and helpful theoretical references. Like LeetCode but for DevOps"  
[X Link](https://x.com/iximiuz/status/1986112245688873060) [@iximiuz](/creator/x/iximiuz) 2025-11-05T16:43Z 67.8K followers, 69.4K engagements


"Computer Networking XXX (Mini-Course) 🧐 Why bother with learning about L2 broadcast domains if most of the day-to-day work happens ot L3 and above Well IP routing runs on top of Ethernet - computers can only send packets to their direct neighbours. When things go sideways (and they will) and your packets stop being delivered as expected understanding lower-level concepts such as ARP broadcasts and "on-link" destinations will be essential to successfully troubleshoot the incident (and impress your colleagues). Take the course you won't regret it Completely free just a few lessons highly"  
[X Link](https://x.com/iximiuz/status/1982788306812146078) [@iximiuz](/creator/x/iximiuz) 2025-10-27T12:35Z 67.8K followers, 80.9K engagements


"@MrJuna1d Please do tell more I'll happily consider any UX adjustments. The site is constantly evolving and the structure is adapting to the ever-growing content collection. I'm planning another pass on it in the coming weeks so additional user feedback would be highly valuable"  
[X Link](https://x.com/iximiuz/status/1986368273970016659) [@iximiuz](/creator/x/iximiuz) 2025-11-06T09:41Z 67.8K followers, XXX engagements


"@ohmypy Keep up the great work 🙌"  
[X Link](https://x.com/iximiuz/status/1986377126447108391) [@iximiuz](/creator/x/iximiuz) 2025-11-06T10:16Z 67.8K followers, XXX engagements


"SSH Tunnels: Port Forwarding on steroids Yesterday we talked about Port Forwarding - an old networking trick that makes an endpoint accessible via a different address. Ports can be forwarded with socat & netcat but there is a much more powerful and ubiquitous alternative: SSH"  
[X Link](https://x.com/iximiuz/status/1982433318370246969) [@iximiuz](/creator/x/iximiuz) 2025-10-26T13:05Z 67.8K followers, 138.4K engagements


"Ensuring the graceful termination of containers can be tricky. Below are two examples. Different ecosystems (Node.js and Go) but both apps suffer from the same issue - broken SIGTERM propagation. Learn how to fix them 👇 - -"  
[X Link](https://x.com/iximiuz/status/1985387966781395002) [@iximiuz](/creator/x/iximiuz) 2025-11-03T16:45Z 67.8K followers, 6557 engagements


"My most recent experience with autonomous coding - agents are not getting any better at "serious" tasks. The code they produce is still so far away from being correct and I'm not even talking about production readiness. A couple of days ago I gave Claude Code an extensive 3000-word spec of a new service (took me a few days to think it all through and write the whole thing down). Hell it even included the exact API endpoints struct and table definitions and emphasized where to use transactions and what operations should be idempotent. Then I prompted CC to implement this new service and two"  
[X Link](https://x.com/iximiuz/status/1980596411503706123) [@iximiuz](/creator/x/iximiuz) 2025-10-21T11:25Z 67.8K followers, 15.8K engagements


"@__0xdev__ Yep I'm cleaning up the generated mess right now and find really terrifying things"  
[X Link](https://x.com/iximiuz/status/1980948142708412684) [@iximiuz](/creator/x/iximiuz) 2025-10-22T10:43Z 67.8K followers, XX engagements


"iximiuz Labs internals post. The project currently consists of the following components: - Foreman: the frontend app and the API service. - Bender: a daemon that controls bare-metal nodes. - Conductor: a daemon that connects a browser page and microVMs launched by Bender. - Firestarter: a thin Firecracker VM launcher and monitor process. - Examiner: a resident VM agent that verifies student actions in the playground. And now I'm adding a new family member: Librarian. This fellow will keep track of persistent VM volumes 📚🧐"  
[X Link](https://x.com/iximiuz/status/1978782819531837677) [@iximiuz](/creator/x/iximiuz) 2025-10-16T11:19Z 67.8K followers, 11K engagements


"LeetCode but for Linux Docker and Kubernetes 🧐 Check out my collection of carefully crafted practical problems - with automated checks helpful hints and step-by-step solutions: A hands-on challenge a day keeps skill rot away"  
[X Link](https://x.com/iximiuz/status/1970181938247016568) [@iximiuz](/creator/x/iximiuz) 2025-09-22T17:42Z 67.8K followers, 339.4K engagements


"Routing 101: NAT Gateways 🛠 Another setup that is beneficial to know how to configure is a private network behind a NAT gateway. The most typical examples are a SOHO network or an AWS VPC. Learn how to enable Internet access for a private network:"  
[X Link](https://x.com/iximiuz/status/1983498411035754861) [@iximiuz](/creator/x/iximiuz) 2025-10-29T11:37Z 67.8K followers, 17.9K engagements


"One month and two days into the two-week-long persistent playgrounds journey I've got a demo Playground VMs can now be rebooted stopped and restarted independently of the playground itself. And thanks to Firecracker it's all pretty snappy"  
[X Link](https://x.com/iximiuz/status/1986899930040905988) [@iximiuz](/creator/x/iximiuz) 2025-11-07T20:53Z 67.8K followers, 2291 engagements


"Hopefully tomorrow I'll get a demo with the playground rootfs pushed to & pulled from a remote S3 bucket 🤞 I've had the backend working for a couple of weeks already but figuring out how to expose the new capabilities in the UI turned out to be not as simple as I anticipated"  
[X Link](https://x.com/iximiuz/status/1986899933421621739) [@iximiuz](/creator/x/iximiuz) 2025-11-07T20:53Z 67.8K followers, 1291 engagements


"iximiuz Labs is approaching 100000 lines of code. - XX% is Go (hardcore system stuff) - XX% is JavaScript (API and orchestration) - XX% is Vue.js (the frontend SPA) Almost X years of development 🚀"  
[X Link](https://x.com/iximiuz/status/1987128694830227764) [@iximiuz](/creator/x/iximiuz) 2025-11-08T12:02Z 67.8K followers, 11.3K engagements