Microshift in Podman (minp)

Make sure you are using rootful mode instead of rootless for this. (Default is podman-machine-default-root)

$ podman system connection ls
Name                         URI                                                         Identity                                                       Default     ReadWrite
podman-machine-default       ssh://[email protected]:61859/run/user/501/podman/podman.sock  /Users/prkumar/.local/share/containers/podman/machine/machine  false       true
podman-machine-default-root  ssh://[email protected]:61859/run/podman/podman.sock           /Users/prkumar/.local/share/containers/podman/machine/machine  true        true

Note: This is not for production use.

In windows on wsl environment make sure you have cgroupsv2 enabled which is not the case by default

• https://github.com/spurin/wsl-cgroupsv2
• microsoft/WSL#6662 (more details around cgroups-v1/v2)

Image is created using https://github.com/eslutsky/microshift/blob/main/okd/src/README.md#build-and-run-microshift-upstream-without-subscriptionpull-secret

NOTE: arm64 image is created using hacky way because OKD doesn't provide arm64 payload as of now.

Get the openshift client binary:

• Windows: https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/latest/openshift-client-windows.zip
• Mac: https://mirror.openshift.com/pub/openshift-v4/aarch64/clients/ocp/latest/openshift-client-mac-arm64.tar.gz

Get the dns config:

This is going to mounted on the container

curl -L -O https://raw.githubusercontent.com/praveenkumar/minp/refs/heads/main/00-dns.yaml

Get the storage config:

This is going to mounted on the container to share the image store from host to container. This config file is taken from https://github.com/containers/storage/blob/main/storage.conf and added the info about additionalimagestores option.

curl -L -O https://raw.githubusercontent.com/praveenkumar/minp/refs/heads/main/storage.conf

Running the image:

For Windows:

podman run --hostname 127.0.0.1.nip.io --detach --rm -it --privileged -v 00-dns.yaml:/etc/microshift/config.d/00-dns.yaml:ro -p 9080:80 -p 9443:443 -p 6443:6443 --name microshift quay.io/praveenkumar/microshift-okd:flannel-amd64
sleep 20
podman cp microshift:/var/lib/microshift/resources/kubeadmin/127.0.0.1.nip.io/kubeconfig .
oc.exe --kubeconfig=kubeconfig get pods -A

For Mac:

podman run --hostname 127.0.0.1.nip.io --detach --rm -it --privileged -v 00-dns.yaml:/etc/microshift/config.d/00-dns.yaml:ro -p 9080:80 -p 9443:443 -p 6443:6443 --name microshift quay.io/praveenkumar/microshift-okd:flannel-arm64
sleep 20
podman cp microshift:/var/lib/microshift/resources/kubeadmin/127.0.0.1.nip.io/kubeconfig .
oc --kubeconfig=kubeconfig get pods -A

Deploy an application:

oc --kubeconfig=kubeconfig apply -f https://raw.githubusercontent.com/praveenkumar/simple-go-server/refs/heads/main/kubernetes/deploy.yaml
oc --kubeconfig=kubeconfig expose service myserver -n demo
oc --kubeconfig=kubeconfig get route -n demo
NAME       HOST                                  ADMITTED   SERVICE    TLS
myserver   myserver-demo.apps.127.0.0.1.nip.io   True       myserver

Access the application on host:

$ curl http://myserver-demo.apps.127.0.0.1.nip.io:9080
hello