Installation and Configuration

Question 1

How to install UCP?

Answer 1

Run the docker UCP container

Question 2

Minimum requirements for running docker UCP?

Answer 2

Manager nodes: 8GB ram, 2 vCPU, 5GB disk space

Worker nodes: 4GB ram, 500MB disk space

Question 3

What are two flags which should be passed when installing UCP?

Answer 3

• -host-address host.ip.address

- -force-minimums

Question 4

What are the four components of Access Control in UCP?

Answer 4

Subjects
Roles
Collections
Grants

Question 5

How to install DTR?

Answer 5

Run the DTR container

Question 6

Minimum requirements for DTR?

Answer 6

16GB ram
2 vCPU
10GB disk space
Node must be managed by UCP
Node must have a fixed hostname

Question 7

How to uninstall DTR?

Answer 7

Run docker image with destroy flag:
docker run -it –rm docker/dtr:latest destroy –ucp-insecure-tls
Run additional commands to completely remove from UCP

Question 8

What step is required before DTR can be used on CLI?

Answer 8

Retrieve the CA certificate from DTR node
Add it to local trusted CA’s
Restart docker

Question 9

How to do a backup of DTR?

Answer 9

Run the DTR container with the with the backup command, specifying URL and credentials for DTR and redirect to .tar file

Question 10

What does DTR backup command include/exclude?

Answer 10

Only backs up DTR config and metadata

Does not back up users or images

Question 11

How to make a backup of DTR images?

Answer 11

For local DTR docker volume storage, tar the contents of the docker volume

Question 12

How to add more DTR nodes for HA?

Answer 12

Run the DTR container with the with the join command

Question 13

How to return the health status of a DTR replica?

Answer 13

curl ip_address_of_dtr_node/_ping

Returns json healthcheck

Question 14

How to get DTR cluster status and information?

Answer 14

curl ip_address_of_dtr_node/api/v0/meta/cluster_status

Question 15

How to make sure tags do not get overwritten in DTR?

Answer 15

Set the repository tags to Immutable in the console

Question 16

How to speed up download of DTR images to users globally?

Answer 16

Use DTR Caching

Question 17

Which two orchestrators can be set on Docker EE in UCP?

Answer 17

Docker Swarm and Kubernetes

Question 18

How can the orchestrator type for a specific node be set in the CLI?

Answer 18

docker node update –label-add com.docker.ucp.orchestrator.kubernetes=true my_node