If you really, really have to use Facebook


That ominous feeling of being stalked, have you ever feel it? I have, oddly by an ad for gaming mouse sold by Lazada when I was reading news on a indonesian news site. The same ad popped somewhere else, and follow me around that day. How did that happen? Well it was actually Facebook, among…

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Move along!


As some of you (I really doubt that) may have notice, there has been lack of update on this blog. This is because, as of July 2019,  I have decided to move my blog to a new domain, which is here. While some, if not most of my new contents will only be available over…

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What’s on My YouTube Playlist #2


So I previously did the first “What’s on My Youtube playlist” back in March 2016 and I kinda want to give an update on it. Also, a friend of mine asked me why I don’t have any “tech” youtuber channel on that list. You see, this is the list of top “tech” channel on Youtube….

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Docker Swarm Load Balancing and SSL Termination with Traefik


If you have read my previous post on Docker Swarm and HAProxy, this post will be more of the same, but with traefik instead of DockerCloud HAProxy serving as front end load-balancer and SSL termination. Also, instead of docker-compose scripts, I’ll be using docker command line to bring up the network and services. Prerequisite &…

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Docker Swarm Load Balancing and SSL Termination with DockerCloud HAProxy


Prerequisite If you have internet facing VMs, particularly 2 of them, as a manager and a worker, and your own domain, that would be great. You can also do this with locally hosted VMs on internal network and self-signed certificate, but you would miss the Let’s Encrypt SSL configuration part. I’m using two Ubuntu 18.04…

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Getting Tomcat ready for production


So you decide that the application is ready for prime time, it’s time to deploy them to production. Before that happens, let’s make sure everything is fine and dandy on the server side. 1. Secure the operating system Runaway services You can start by reviewing out services that are listening to incoming connection and which…

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Enabling Hibernate on Ubuntu 19.04 Disco Dingo


So I decided to migrate my ThinkPad X230 from Ubuntu 18.04 to the newly released Ubuntu 19.04, codenamed “Disco Dingo”. To get Disco (or any recent, SystemD-ladden Ubuntu releases) to play nice with hibernate, you need to plan ahead. Prepare swap partition. In the installation process, prepare and create a swap partition as large as…

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fail2ban, ufw, and sshd with custom port on Ubuntu


One of the tool we can use to secure our Ubuntu box from incoming attacks, if we can’t establish a whitelist for incoming connection is fail2ban. Point fail2ban to your “/var/log/auth.log” on debian-based,  or “/var/log/secure” on Redhat-based distros to automatically add offending IPs to your firewall and stopping them from DDoS-ing the server. On Ubuntu,…

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Installing Kie Server & Drools Workbench Part 1: WildFly Application Server


Red Hat Decision Manager (RHDM) is great BRMS platform. But as affordable as Red Hat subscription compared to its’ Oracle or IBM counterparts, it’s still not cheap. Alternatively, or if you think you’re too cool for enterprise support, you can start with Drools and when you or your organization decide the platform is essential enough…

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How to setup SPF record for your domain


There will be time that you have to succumb to things that you’ve been avoiding for the longest of time.. Such as sending bulkmail, either for let say, sending billing infos to your customers, or -god forbid- spa..I mean advertisement. On the other hand, you, google, yahoo and any other email providers would prefer that…

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