Part two of a two-part series on building a high-availability containerized MariaDB Galera cluster on top of a multi-master docker swarm in the cloud....
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It has always bothered me when reading tutorials and documentation on setting up a docker swarm with machine, the discovery service for the swarm is always sitting on its own -- usually just a single instance sitting outside the swarm itself. Instead, let's run consul on top of the swarm itself, and deploy a containerized MariaDB Galera cluster on the swarm -- and let's do it in IBM Softlayer in under 15 minutes....
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If you're using a 1:1 relationship of app to db instances or if you're balancing load to the database, you'll want to make sure that not only is the database responding but also that the specific database system you're connecting to is synchronized with the cluster and not experiencing any issues....
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Your bash/zsh history is great if its complete, but it doesn't capture commands across all users, sudo's, root commands etc. It would be nice to be able to look up what the user did at the time, and searching through multiple, possibly truncated history files is a pain....
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Replace stock docker, docker-machine and docker-compose under OSX using virtualbox with the latest RC versions using the Xhyve driver for better performance under OSX using the native Hypervisor.framework....
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An example check_wmi_plus configuration for Icinga2. Check_wmi_plus is a clientless plugin for monitoring Windows systems via WMI with Nagios and other monitoring platforms....
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