Taking network monitoring to the next level

As system engineer and part-time network engineer, I am responsible to make sure all system are running and the network properly connected (24/7/365).Now, I will write about a project came from RIPE NCC, called RIPE Atlas. RIPE Atlas is a global network of probes that measure Internet connectivity and reachability, providing an unprecedented understanding of the state of the Internet in real time.

Building AKAMAI-like CDN using Amazon AWS with minimal budget

Based on Gartner Magic Quadrant (Aug) 2016, AWS still leader on cloud IaaS provider. And I’ve been using Amazon AWS since 2013 (S3 Bucket, Cloudfront, and Route53). The reason why I use that service only on Amazon AWS are, to optimize existing on premise infrastructure. The big challenge is to manage big assets (images) without downtime and data loss and of course using optimized resource.

Subnetting IPv6 Cheatsheet

Since IPv6 hype was launch several years ago, many people (incl. me) were struggling how to split IPv6 subnet correctly. Honestly, I wasn’t network engineer, but learning network fundamental is not a big deal (especially IPv6, nowadays, it’s a new protocol!). Since it was launch at 1990 (former IPNG), based on APNIC Labs Survey, the adoption of native IPv6 still low.

Creating optimized qcow2 files

Standard and default images create using virt-manager on linux, automatically full allocating specified disk size to host. To avoid un-usable disk space, you should avoid choosing default images created by virt-manager.

Google Brotli Compression [Theory & Implementation]

Brotli is a generic-purpose lossless compression algorithm that compresses data using a combination of a modern variant of the LZ77 algorithm, Huffman coding and 2nd order context modeling, with a compression ratio comparable to the best currently available general-purpose compression methods. It is similar in speed with deflate but offers more dense compression.

NGINX Amplify - Monitoring & Config Assistance

Beberapa hari yang lalu saya mendapatkan notifikasi dari NGINX mengenai launching product baru yang masih private beta. Apa itu NGINX Amplify? Di ambil dari halaman resmi-nya, “NGINX Amplify is a tool designed to monitor and optimize application delivery infrastructure. With Amplify it becomes possible to proactively analyze and fix problems related to running and scaling modern web applications”.

KeepAlive menggunakan metode Direct Routing

Saat ini saya ada project untuk konfigurasi Load Balancer dengan metode Direct Routing, atau yang biasa dikenal dengan DSR (Direct Server Return). Atau gambaran topologinya seperti ini.

Cent OS 7, Working with nmcli

Bagi yang sudah terbiasa menggunakan operating system Cent OS 6, untuk migrasi ke Cent OS 7 rata-rata masih harus mikir 2x, karena perbedaan SysV dan SystemD.

Enable Cloudflare HSTS and Github Pages

Dewasa ini, sudah banyak layanan SSL Termination yang bisa digunakan, salah satunya adalah Cloudflare Universal SSL. Saat ini, log.xtremenitro.org menggunakan layanan tersebut secara cuma-cuma. Saat artikel ini di tulis, layanan tersebut masih disediakan gratis bagi pengguna Cloudflare (free/paid).

Jessie J - Flashlight (Tune of the week, October)