Preperation for DCA exam: Orchestration

Clone the repo and startup with vagrant up. This might take while, it are 4 vm's

This is from DCA study guide:

• Complete the setup of a swarm mode cluster, with managers and worker nodes
• State the differences between running a container vs running a service
• Demonstrate steps to lock a swarm cluster
• Extend the instructions to run individual containers into running services under swarm
• Interpret the output of "docker inspect" commands
• Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy"
• Manipulate a running stack of services
• Increase # of replicas
• Add networks, publish ports
• Mount volumes
• Illustrate running a replicated vs global service
• Identify the steps needed to troubleshoot a service not deploying
• Apply node labels to demonstrate placement of tasks
• Sketch how a Dockerized application communicates with legacy systems
• Paraphrase the importance of quorum in a swarm cluster
• Demonstrate the usage of templates with "docker service create"

You can build the presentation yourself:

docker build -t mwtf1/dcaorchestration
docker run -d -p 8000:1948 mwtf1/dcaorchestration:latest

Install docker on all the nodes and initiate cluster