Dunst is a lightweight replacement for the notification daemons provided by most desktop environments. It's very customizable, isn't dependent on any toolkits, and therefore fits into those window manager centric setups we all love to customize to perfection.

UnifiedPush is a specification and set of tools to let the user choose how push notifications are delivered. All in a free and open source way.

End users should look at setting up a distributor. Developers wanting to integrate UnifiedPush in their apps should look at the definitions and the documentation for your platform.

As a system administrator, monitoring is a key job responsibility, yet arguments seem to arise on how to implement it (usually with people who won’t be paged at 3am). Before writing this, I looked around for an article on the goals and philosophy of system monitoring, but found very little that really applied to this topic. Hopefully this will help set some expectations for admins, managers and stakeholders on what you should monitor, and why it should be monitored.

While you can use the database client to check the status of your cluster, the individual nodes and the health of replication, you may find it counterproductive to log into the client on each node to run these checks. Galera Cluster provides a notification script and interface for customization, allowing you to automate the monitoring process for your cluster.