http://sarcasticadmin.com/ Recent content on Sarcastic Admin Hugo -- gohugo.io en-us Sat, 20 Jan 2018 00:00:00 +0000 http://sarcasticadmin.com/tutorials/tmux_version_check/ Sat, 20 Jan 2018 00:00:00 +0000 http://sarcasticadmin.com/tutorials/tmux_version_check/ Overview Tmux changed the bind syntax starting in version 2.4. The syntax changes are simple enough to make, however, some linux distros haven’t upgraded to a newer version of tmux. For example, RHEL 7.4 still has tmux 1.8 in its repositories by default while FreeBSD 11.1 has tmux 2.6. To ensure maximium backward compatibility with tmux viersions <2.4 the .tmux.conf should check the system’s version of tmux and act accordingly. http://sarcasticadmin.com/tutorials/salt-ssh_howto/ Tue, 24 Oct 2017 00:00:00 +0000 http://sarcasticadmin.com/tutorials/salt-ssh_howto/ Overview salt-ssh allows the use of salt modules and states without the need to run a master or masterless configuration on a server. It’s also a nice tool when you have to connect and thing commands across multiple instances. Recently a friend of mine got his PR #42103 merged upstream into the Salt project. This enables the sshconfig roster for salt-ssh so users can leverage an existing ssh config for targeting salt minions without needing a roster file. http://sarcasticadmin.com/tutorials/terraform_cloudinit_scripts/ Tue, 29 Aug 2017 00:00:00 +0000 http://sarcasticadmin.com/tutorials/terraform_cloudinit_scripts/ Overview Terraform offers a data source for cloudinit which is really useful for bootstrapping EC2 instances with an initial configuration. For me, this is usually a script with just enough code to run salt-call. I was having a hard time figuring out exactly how to include files into the data source template_cloudinit_config since my bootstrap script had a dependency on a second script. Scenario In specific provisioning cases I’ve had two scripts that I wanted to include for bootstrapping a Linux EC2 instance via terraform. http://sarcasticadmin.com/tutorials/weechat_buflist_issue/ Mon, 05 Jun 2017 00:00:00 +0000 http://sarcasticadmin.com/tutorials/weechat_buflist_issue/ buflist conflicting with buffers.pl Overview I recently upgraded weechat from 1.7 to 1.8 and noticed that my buffer list was being duplicated. After looking at the 1.8 Release Notes I noticed it mentioned - add plugin “buflist” (bar with list of buffers). This was obviously the problem since I was using buffers.pl (like most weechat users) which already offers this functionality. Fix The fix was easy enough. I just had to disable buflist. http://sarcasticadmin.com/tutorials/terraform_version_req/ Thu, 30 Mar 2017 00:00:00 +0000 http://sarcasticadmin.com/tutorials/terraform_version_req/ The new configuration block Overview Recently I found myself needing to upgrade terraform. I’d been on version 0.7.11 for awhile and due to how rapidly terraform releases new versions I quickly feel behind on versions. Additionally there were a few new shinies I wanted to make use of so I decided to upgrade. The one feature in particular I’m going to cover is terraform’s new configuration block which will be used for all meta-configuration (i. http://sarcasticadmin.com/rants/canons_linux.driver/ Mon, 06 Feb 2017 00:00:00 +0000 http://sarcasticadmin.com/rants/canons_linux.driver/ My unpleasant experience with the Canon Cups driver on Linux This complaint was posted through Canon’s support page on 2016-12-31 after I spent several hours attempting to install a driver for Canon’s printer which they claim has Linux support: To whom it may concern, Over the holiday I was in the process of converting my fathers last remaining computer over to Linux. Specifically Ubuntu 16.04 Mate. I find that this version provides him with a user interface he is familiar with (Windows XP) and it has the widest set of software available. http://sarcasticadmin.com/tutorials/credstash_encryption_context/ Tue, 30 Aug 2016 00:00:00 +0000 http://sarcasticadmin.com/tutorials/credstash_encryption_context/ Configuring KMS Encryption Context For Credstash Overview One thing I HATE with a passion is the lack of examples for valid IAM permissions in conjunction with tools for AWS. The docs and examples for tools are always too simple and/or the project’s docs are hit or miss for covering most of the use cases for properly locking down your IAM policies in a sane matter. This tutorial will help show how to correctly harden IAM on EC2 instances when using Credstash. http://sarcasticadmin.com/tutorials/stow_hashicorp_tools/ Sun, 22 May 2016 00:00:00 +0000 http://sarcasticadmin.com/tutorials/stow_hashicorp_tools/ Configuring Packer and Terraform with GNU Stow on FreeBSD Overview I use Hashicorp’s packer and terraform tools to deploy infrastructure. They’re great tools and I’d definitely recommend them over home-rolled solutions or Cloudformation (if you’re in AWS). The problem, for me, with using these tools was installation. Hashicorp provides prebuilt binaries for most modern OS’s including FreeBSD. This is nice but its pretty tedious to have to download, unzip, and move the binaries around. http://sarcasticadmin.com/about/ Mon, 01 Jan 0001 00:00:00 +0000 http://sarcasticadmin.com/about/ This site is a collection of *nix rants and tutorials about software that I use day to day and in my career. The goal is to provide a single source of truth for myself and others with the hope of these posts being beneficial to other engineers. ~Rob http://sarcasticadmin.com/home/ Mon, 01 Jan 0001 00:00:00 +0000 http://sarcasticadmin.com/home/ A dumping ground for my *nix rants & tutorials http://sarcasticadmin.com/license/ Mon, 01 Jan 0001 00:00:00 +0000 http://sarcasticadmin.com/license/ BSD 2-Clause License Copyright ©, Robert James Hernandez All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.