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