[root@rhce-ryanrudolf]# rm -rf / 2> /dev/null

things I break/fix for fun and learning

Mar 5, 2018 - 1 minute read - Comments

Renewing Expired HTTPS Certificates using certbot

I tried to access my personal site and I was greeted by this nasty warning message -

This server could not prove that it is ryanrudolf.duckdns.org; its security certificate expired yesterday. This may be caused by a misconfiguration or an attacker intercepting your connection. Your computer’s clock is currently set to Monday, March 5, 2018. Does that look right? If not, you should correct your system’s clock and then refresh the page.

Feb 20, 2018 - 2 minute read - Comments

New NIC to the Rescue

Earlier today, I wasn’t able to access my homeserver externally. I thought maybe the LAN cable just got disconnected, or worse the power cord of the server got disconnected. When I got home, I immediately tested if I am able to access the homeserver from my internal LAN.

Feb 12, 2018 - 3 minute read - Comments - linux

Study Study Study

I recently got a message asking how I prepare for certifications / exams. I just keep on studying, reading and lots and lots of practice! The hardware that you use also helps.

Jan 29, 2018 - 2 minute read - Comments

Debian to Fedora

It’s been a productive weekend. I’ve decided to reformat my study laptop from Debian to Fedora. Since I am preparing for RHCSA, it’s better to get used to the RPM ecosystem. I also need to practice on KVM hence I reformatted to Fedora. And Fedora is the upstream of RHEL, what I learn in RHEL / Fedora can be used in one another with some minor adjustments.

Jan 10, 2018 - 2 minute read - Comments

Accessing RHEL7 Labservers remotely

Lately I’ve been pushing myself to work extra hard in preparation for the RHCSA exam. I’ve paid the exam fees and just wating for the official statement from my credit card to had it reimbursed. One of the perks in the company is continuous learning - they have a great certification program and I am taking advantage of it. All the certs I have acquired so far are all paid for by the company. I didn’t spend any cent, and to my last count I had acquired several certs and the cost is at least $1,200cad!

Jan 4, 2018 - 1 minute read - Comments

How to Recover ROOT Password in RedHat Enterprise Linux 7

ROOT is the superuser / admin account on Linux systems. There are times wherein an admin needs to recover the root password due to compromised system, or simply because the password is very complex it is hard to remember! I’ve seen several ways on how to recover root password on several Linux system - Debian, Ubuntu, Fedora, CentOS, etc etc. But by studying the LinuxAcademy RHCSA course, it looks like the RedHat way is the easiest and straightforward way!

Dec 25, 2017 - 2 minute read - Comments - android

Android Custom ROM Xenon HD

Recently I semi-bricked my old Xperia flagship phone. Semi-brick as it still powers ON but Android does not load. After so many trial and error, I was able to boot to custom recovery TWRP and revive the phone! I’m so happy as I now have 2 Android phones that will complement one another. Both will only have data only plans and this Xperia flagship phone will be my backup for VoIP.

Currently I have the Asus Zenfone 2 Laser 1080p (Z00T) and Sony Xperia ZL (Odin). I am looking around for custom ROMs based on Nougat and have substratum OMS support (for themeing support). I want a custom ROM that both exist on Z00T and Odin devices, so that there will only be 1 UI and the looks will be consistent on both.