Continuous Delivery with Docker and Jenkins

Setting agents

At the low level, agents communicate with the Jenkins master always using one of the protocols described above. However, at the higher level, we can attach slaves to the master in various ways. The differences concern two aspects:

• static versus dynamic: The simplest option is to add slaves permanently in the Jenkins master. The drawback of such solution is that we always need to manually change something if we need more (or less) slave nodes. A better option is to dynamically provision slaves as they are needed.
• specific versus general-purpose: Agents can be specific (for example, different agents for the projects based on Java 7 and different agents for Java 8) or general-purpose (an agent acts as a Docker host and a pipeline ...