Build an Orchestrator in Go (From Scratch)

4 Workers of the Cube, unite!

This chapter covers

• Reviewing the purpose of the worker component in an orchestration system
• Reviewing the Task and Docker structs
• Defining and implementing an algorithm for processing incoming tasks
• Building a simple state machine to transition tasks between states
• Implementing the worker’s methods for starting and stopping tasks

Think about running a web server that serves static pages. In many cases, running a single instance of our web server on a single physical or virtual machine is good enough. As the site grows in popularity, however, this setup poses several problems:

• Resource availability—Given the other processes running on the machine, is there enough memory, CPU, and disk space to meet the needs ...