Archive for the ‘Linux’ Category

Check MariaDB replication status inside Ansible

I needed a method to check replication status inside Ansible. The method I came up with uses the shell module… ?View Code YAML— – hosts: mariadb vars_prompt: – name: "mariadb_user" prompt: "Enter MariaDB user" – name: "mariadb_password" prompt: "Enter MariaDB user password"   tasks: – name: "Check MariaDB replication state" shell: "test 2 -eq $(mysql […]

The blame game: Who deleted that file? Working with auditd

I’ve recently had an issue where a file was disappearing that I couldn’t explain. Without something to blame it on I search for a method to log change to file and quickly found audit. Audit is quite extensive and can capture a vast array of information. I’m only interested in monitoring a specific file here. This […]

Getting started with osquery on CentOS

I recently stumbled across osquery which allows you to query your Linux, and OS X, servers for various bits of information. It’s very similar in concept to WQL for those in the Windows world. Here’s my quick getting started guide for CentOS 6.X… First download and install the latest rpm for your distro. You might want to […]

emo: Launch an elasticsearch cluster

I’m getting a bit more into elasticsearch and I’ve started up a github project to contain some of work. This project will be similar to mmo: Python library for MongoDB and can be found at emo. The project will again be in python and will basically be a bunch of methods for exploring and managing […]

Delete all but the most recent files in Bash

I’ve been reviewing a few things I do and decided I need to be a bit smarter about managing backups. I currently purge by date only. Which is fine if everything is working and checked regularly. I wouldn’t want to return from a two week holiday to find my backups had been failing, nobody checked […]