Docker Certified Associate Coursenanforiberica
Module 1: Orchestration : ● 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"
Module 2: Image Creation, Management, and Registry: ● Describe Dockerfile options [add, copy, volumes, expose, entrypoint, etc) ● Show the main parts of a Dockerfile ● Give examples on how to create an efficient image via a Dockerfile ● Use CLI commands such as list, delete, prune, rmi, etc to manage images ● Inspect images and report specific attributes using filter and format ● Demonstrate tagging an image ● Utilize a registry to store an image ● Display layers of a Docker image ● Apply a file to create a Docker image ● Modify an image to a single layer ● Describe how image layers work ● Deploy a registry (not architect) ● Configure a registry ● Log into a registry ● Utilize search in a registry ● Tag an image ● Push an image to a registry ● Sign an image in a registry ● Pull an image from a registry ● Describe how image deletion works ● Delete an image from a registry
Module 3: Installation and Configuration ● Demonstrate the ability to upgrade the Docker engine ● Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms ● Configure logging drivers (splunk, journald, etc) ● Setup swarm, configure managers, add nodes, and setup backup schedule ● Create and manager user and teams ● Interpret errors to troubleshoot installation issues without assistance ● Outline the sizing requirements prior to installation ● Understand namespaces, cgroups, and configuration of certificates ● Use certificate-based client-server authentication to ensure a Docker daemon has the rights to access images on a registry ● Consistently repeat steps to deploy Docker engine, UCP, and DTR on AWS and on premises in an HA config ● Complete configuration of backups for UCP and DTR ● Configure the Docker daemon to start on boot
Module 4: Networking ● Create a Docker bridge network for a developer to use for their containers ● Troubleshoot container and engine logs to understand a connectivity issue between containers ● Publish a port so that an application is accessible externally ● Identify which IP and port a container is externally accessible on ● Describe the different types and use cases for the built-in network drivers ● Understand the Container Network Model and how it interfaces with the Docker engine and network and IPAM drivers ● Configure Docker to use external DNS ● Use Docker to load balance HTTP/HTTPs traffic to an application (Configure L7 load balancing with Docker EE) ● Understand and describe the types of traffic that flow between the Docker engine, registry, and UCP controllers ● Deploy a service on a Docker overlay network ● Describe the difference between "host" and "ingress" port publishing mode
Module 5: Security ● Describe the process of signing an image ● Demonstrate that an image passes a security scan ● Enable Docker Content Trust ● Configure RBAC in UCP ● Integrate UCP with LDAP/AD ● Demonstrate creation of UCP client bundles ● Describe default engine security ● Describe swarm default security ● Describe MTLS ● Identity roles ● Describe the difference between UCP workers and managers ● Describe process to use external certificates with UCP and DTR
Module 6: Storage and Volumes ● State which graph driver should be used on which OS ● Demonstrate how to configure devicemapper ● Compare object storage to block storage, and explain which one is preferable when available ● Summarize how an application is composed of layers and where those layers reside on the filesystem ● Describe how volumes are used with Docker for persistent storage ● Identify the steps you would take to clean up unused images on a filesystem, also on DTR ● Demonstrate how storage can be used across cluster nodes