OpenShift 4.10 I: Create an OCP Application from Image, S2I, Template

From Image

$ oc new-project myproj01

$ oc new-app --name=httpd-24 --image=registry.access.redhat.com/ubi8/httpd-24 --labels app=httpd-24

$ oc get all

$ oc logs pod/httpd-24-9fb54567d-n9slj

$ oc expose service/httpd-24

$ oc get all

$ curl http://httpd-24-ch06s03.apps-crc.testing/

$ oc exec pod/httpd-24-9fb54567d-n9slj -- ps -aux
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
1000650+       1  0.0  0.2 391296 21980 ?        Ss   19:54   0:00 httpd -D FOREGROUND

$ oc describe pod/httpd-24-9fb54567d-n9slj

Source-to-Image (S2I)

$ oc new-project myproj03

$ oc get is -n openshift

$ oc new-app --name=ruby-hello-world --labels app=myapp --image-stream=ruby https://github.com/openshift/ruby-hello-world

$ oc get all

$ oc logs -f pod/ruby-hello-world-1-build

$ oc describe pod/ruby-hello-world-1-build

$ oc describe service/ruby-hello-world

$ oc expose service/ruby-hello-world

$ curl http://ruby-hello-world-myproj03.apps-crc.testing/

$ oc get buildconfig
NAME               TYPE     FROM   LATEST
ruby-hello-world   Source   Git    1

$ oc start-build ruby-hello-world

From Template

$ oc new-project myproj02

$ oc get templates -n openshift

$ oc get templates -n openshift | grep mysql
mysql-ephemeral                                 MySQL database service, without persistent storage. For more information abou...   8 (3 generated)   3
mysql-persistent                                MySQL database service, with persistent storage. For more information about u...   9 (3 generated)   4

$ oc describe template mysql-persistent -n openshift

$ oc new-app --name=app-db --template=mysql-persistent \
  --param MYSQL_USER=myuser \
  --param MYSQL_PASSWORD=redhat123 \
  --param MYSQL_ROOT_PASSWORD=redhat123 \
  --param MYSQL_DATABASE=items \
  --labels app=app-db

$ oc get events

$ oc describe service/mysql
Name:              mysql
Namespace:         myproj02
Labels:            app=app-db
                   template=mysql-persistent-template
Annotations:       openshift.io/generated-by: OpenShiftNewApp
                   template.openshift.io/expose-uri: mysql://{.spec.clusterIP}:{.spec.ports[?(.name=="mysql")].port}
Selector:          name=mysql
Type:              ClusterIP
IP Family Policy:  SingleStack
IP Families:       IPv4
IP:                10.217.4.67
IPs:               10.217.4.67
Port:              mysql  3306/TCP
TargetPort:        3306/TCP
Endpoints:         10.217.0.106:3306
Session Affinity:  None
Events:            <none>

$ oc get pvc
NAME    STATUS   VOLUME   CAPACITY   ACCESS MODES   STORAGECLASS   AGE
mysql   Bound    pv0023   100Gi      RWO,ROX,RWX                   2m59s

$ oc describe pvc mysql
Name:          mysql
Namespace:     myproj02
StorageClass:  
Status:        Bound
Volume:        pv0023
Labels:        app=app-db
               template=mysql-persistent-template
Annotations:   openshift.io/generated-by: OpenShiftNewApp
               pv.kubernetes.io/bind-completed: yes
               pv.kubernetes.io/bound-by-controller: yes
Finalizers:    [kubernetes.io/pvc-protection]
Capacity:      100Gi
Access Modes:  RWO,ROX,RWX
VolumeMode:    Filesystem
Used By:       mysql-1-qncwj
Events:        <none>

$ oc port-forward pod/mysql-1-qncwj 3306:3306

$ mysql --host=127.0.0.1 --port=3306 --user=myuser --password=redhat123 --database=items --execute="show databases;"