Category Archives: sysadmin

Block Advertising on your Network with Pi-hole and Raspberry Pi

Posted on February 27, 2018 by

I recently setup Pi-hole on an existing Raspberry Pi running CentOS on my home network to serve as my DNS server and block advertising and unwanted domains for all internet-connected devices.  I’m still using an ASUS router with Shibby Tomato … Continue reading →

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Automate RPM Builds from Git Sources using COPR

Posted on September 3, 2017 by

The Fedora project COPR service builds/hosts free RPM package repositories and provides useful automation hooks for your Devopsing.  You can combine COPR and any standard Git source (Github, Gitlab, etc) with webhooks for automated package builds when your source repository … Continue reading →

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Backup and Restore using SpiderOak on Linux

Posted on August 20, 2017 by

Recently the SSD Operating System disk on my primary work desktop failed without warning and no manner of arcane xfsrepair or xfsdump/xfsrestore chicanery would bring it back.  Luckily I had SpiderOak backups as my employer offers this as a service … Continue reading →

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Using Offlineimap with the Gmail IMAP API

Posted on July 17, 2017 by

In a previous guide I documented my mutt + offlineimap + notmuch setup.  If you’re using Gmail with IMAP enabled you can still utilize the superpower of this trio but you’ll need to do some things differently.  I’ll show you … Continue reading →

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Distributed Remote Backups with Git and Etckeeper

Posted on July 15, 2017 by

Git is a powerful tool for lots of tasks, it makes a wonderful VCS that can drive easy utility and automation.  Recently I used git and remote repositories to deploy code & data fanned out to multiple locations.  Here are … Continue reading →

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Shell One-liners and Quick and Dirty Loops

Posted on March 23, 2017 by

Sometimes you just need to get stuff done quickly and there’s nary a replacement better than a quick shell one-liner.  Recently I’ve needed to feed some large, multi-variable commands into an external program for processing.  Here’s some simple shell one-liners … Continue reading →

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Let’s Encrypt Everything – Setting up the Free, Automated CA

Posted on February 21, 2017 by

Let’s Encrypt is a free, public SSL certificate authority (CA) you can use to generate and automate SSL certificate renewal.  I co-manage Trystack.org, a free OpenStack sandbox for the general public and our Horizon SSL certificate came up for expiration … Continue reading →

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