Fedora OpenShift

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Dockerfile

FROM fedora:30

RUN dnf -y update && dnf clean all

RUN dnf -y install systemd && dnf clean all && \
(cd /lib/systemd/system/sysinit.target.wants/; for i in *; do [ $i == systemd-tmpfiles-setup.service ] || rm -f $i; done); \
rm -f /lib/systemd/system/multi-user.target.wants/*;\
rm -f /etc/systemd/system/*.wants/*;\
rm -f /lib/systemd/system/local-fs.target.wants/*; \
rm -f /lib/systemd/system/sockets.target.wants/*udev*; \
rm -f /lib/systemd/system/sockets.target.wants/*initctl*; \
rm -f /lib/systemd/system/basic.target.wants/*;\
rm -f /lib/systemd/system/anaconda.target.wants/*;

VOLUME [ "/sys/fs/cgroup", "/tmp", "/run" ]

CMD ["/usr/sbin/init"]

Building Fedora Container Image

$ docker build -t fedora .

Pushing Fedora Container Image

$ docker tag fedora:latest <username>/fedora:latest
$ docker push <username>/fedora:latest

Available Images

Creating Fedora Image Stream

Prepare a configuration file (e.g. fedora-is.yaml):

apiVersion: v1
kind: ImageStream
metadata:
  labels:
    app: fedora
  name: fedora
spec:
  tags:
    - from:
        kind: DockerImage
        name: edewata/fedora
      name: latest

Then execute the following command:

$ oc create -f fedora-is.yaml

Creating Fedora Application

Prepare a configuration file (e.g. fedora-dc.yaml):

apiVersion: v1
kind: DeploymentConfig
metadata:
  labels:
    app: fedora
  name: fedora
spec:
  selector:
    app: fedora
    deploymentconfig: fedora
  template:
    metadata:
      labels:
        app: fedora
        deploymentconfig: fedora
    spec:
      containers:
        - image: edewata/fedora
          name: fedora
          volumeMounts:
            - mountPath: /run
              name: fedora-volume-1
            - mountPath: /sys/fs/cgroup
              name: fedora-volume-2
            - mountPath: /tmp
              name: fedora-volume-3
      volumes:
        - emptyDir: {}
          name: fedora-volume-1
        - emptyDir: {}
          name: fedora-volume-2
        - emptyDir: {}
          name: fedora-volume-3
  test: false
  triggers:
    - type: ConfigChange
    - imageChangeParams:
        automatic: true
        containerNames:
          - fedora
        from:
          kind: ImageStreamTag
          name: 'fedora:latest'
      type: ImageChange

Then execute the following command:

$ oc create -f fedora-dc.yaml

Starting Fedora Application

$ oc scale dc fedora --replicas=1

Updating Container Image

If newer container image is available, it can be deployed with the following command:

$ oc import-image <username>/fedora:latest

See Also