Containers

Question 1

search for mysql image

Answer 1

podman search quay.io/rhel8/mysql

Question 2

inspect an image before downloading

Answer 2

skopeo inspect docker://quay.io/app-sre/mysql

Question 3

download image

Answer 3

podman pull docker://quay.io/app-sre/mysql

Question 4

see install images

Answer 4

podman images

Question 5

see detail description of mysql

Answer 5

podman inspect mysql

Question 6

remove mysql

Answer 6

podman rmi mysql

Question 7

Launch a container using ubi8 (RHEL 8 image). Name this container
rhel8-base-os and open a terminal session (-t) for interaction (-i). Use
the podman run command

Answer 7

podman run -ti –name rhel8-base-os ubi8

Question 8

execute a command inside the container from host

Answer 8

podman exec rhel8-base-os cat /etc/redhat-release

Question 9

reconnect to the container

Answer 9

podman attache rhel8-base-os

Question 10

delete container

Answer 10

podman rm rhel8-base-os

Question 11

run a command and immediately terminate container after command is finished

Answer 11

podman run –rm ubi7 ls

Question 12

see all running containers

Answer 12

podman ps

Question 13

configure port mapping

Answer 13

podman search registry.redhat.redhat.io/rhel7/httpd
podman login registry.redhat.io
podman pull registry.redhat.io/rhscl/httpd-24-rhel7
podmand run -dp 10000:8000 –name rhel7-port-map httpd-24-rhel7 ##-d detached; -p port; host port 10000 container port 8000###
podman ps
podman port rhel7-port-map ##shows port mapping

Question 14

stop a container

Answer 14

podman stop rhel7-port-map

Question 15

start a container

Answer 15

podman start rhel7-port-map

Question 16

pass and set environment variables

Answer 16

podman run -it -e HISTSIZE -e SECRET=”secret123” –name rhel8-env-vars ubi8

e) variables HISTSIZE and SECRET as directed. Use the specified
container image##