This tutorial series is going to be very fruitful if you are looking for hands-on training on Docker, Podman like container based technologies and Kubernetes and Openshift for container orchestration systems.
This tutorial will certainly help you for preparation of RedHat Exam 188 Specialist in Containers. I will cover all the topics and aspects of exam 188 and also include exam tips at the end of series. So good luck and happy learnings to all.
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Podman, Creating & Accessing Containers, Networking RedHat Ex188 Specialist in Containers OpenShift
Chapter 1.
Overview of Containers & Podman
Lab 1 -- Creating Containers
podman pull registry.access.redhat.com/ubi8/ubi-minimal:8.8
podman images
podman run registry.access.redhat.com/ubi8/ubi-minimal:8.8 echo 'Hello Red Hat'
podman ps
podman run -e GREET=Hello -e NAME='Red Hat' registry.access.redhat.com/ubi8/ubi-minimal:8.8 printenv GREET NAME
podman run -d -p 8080:8080 registry.access.redhat.com/ubi8/httpd-24
podman stop (id)
podman ps -a
podman rm (id)
podman rmi (id)
Lab 2 -- Container Networking
podman network inspect podman
podman network create cities
podman network inspect cities
podman run --name times-app --network cities -p 8080:8080 -d docker.io/tsrana1/podman-info-times:v0.1
podman inspect times-app -f '{{.NetworkSettings.Networks.cities.IPAddress}}'
podman run --rm --network cities registry.access.redhat.com/ubi8/ubi-minimal:8.5 curl -s IP_ADDRESS:8080/times/BKK
podman run --rm --network cities registry.access.redhat.com/ubi8/ubi-minimal:8.5 curl -s times-app:8080/times/BKK
podman run --name cities-app --network cities -p 8090:8090 -d -e TIMES_APP_URL=times-app:8080/times docker.io/tsrana1/podman-info-cities:v0.1
curl localhost:8090/cities/MAD
curl localhost:8090/cities/SAN
Lab 3 -- Accessing Containers
podman run --name nginx -d -p 8080:8080 docker.io/tsrana1/podman-nginx-helloworld
podman cp nginx:/var/log/nginx/error.log error.log
podman exec nginx ls /usr/share/nginx/html/public
podman cp nginx:/etc/nginx/nginx.conf nginx.conf
podman exec -it nginx bash
vim /etc/nginx/nginx.conf
podman exec nginx nginx -s reload