Skip to content

Latest commit

 

History

History
143 lines (103 loc) · 3.65 KB

02.openshif-application.md

File metadata and controls

143 lines (103 loc) · 3.65 KB
Raw

Deploying an application to OpenShift Cluster

oc login -u developer -p developer
oc new-project docker-build

oc new-app --as-deployment-config --name echo https://github.com/$RHT_OCP4_GITHUB_USER/DO288-apps#docker-build --context-dir ubi-echo

oc status 
oc logs -f buildconfig/echo
oc describe is echo

Deploying and Managing Applications on OpenShift Cluster

  1. Deploy the application from Git:xxxxxgit in the nodejs-helloworld folder to the source-build project on the OpenShift cluster. Application name: greet.
  2. Fix the error build process.
  3. Expose app and make sure you get the output from the apps.
oc login -u developer -p xxxx
oc new-project source-build
oc new-app --name greet --as-deployment-config ¥
    --build-env npm_config_registry=http://xxxx/repository/nodejs nodejs:12~https://github.com/$RHT_OCP4_GITHUB_USER/DO288-apps#source-build ¥
    --context-dir nodejs-helloworld
---> DEPLOY FAILED

git clone xxxxxgit

#Configure git config
git config --global user.email="developer@email.com"
git config --global user.name="developer"
cat ~/.gitconfig
    [user]
      name = developer
      email = developer@email.com

git checkout master
git checkout -b source-build
git push -u origin source-build

oc logs bc/greet 
--->error on xxxx.json

python -m json.tool xxxx.json
--->find the error syntax
vi xxxx.json
--->fix the syntax

git commit -a -m "xxxx"
git push

oc start-build greet
oc logs -f bc/greet
oc get pod

oc expose service greet

oc get route
curl <route-url>
--->Check the app from browser too
Dockerfile
Httpd-parent Dockerfile
FROM registry.access.redhat.com/ubi8/ubi:8.0

MAINTAINER Red Hat Training <training@redhat.com>

# DocumentRoot for Apache
ENV DOCROOT=/var/www/html

RUN   yum install -y --no-docs --disableplugin=subscription-manager httpd && \
      yum clean all --disableplugin=subscription-manager -y && \
      echo "Hello from the httpd-parent container!" > ${DOCROOT}/index.html

# Allows child images to inject their own content into DocumentRoot
ONBUILD COPY src/ ${DOCROOT}/

EXPOSE 80

# This stuff is needed to ensure a clean start
RUN rm -rf /run/httpd && mkdir /run/httpd

# Run as the root user
USER root

# Launch httpd
CMD /usr/sbin/httpd -DFOREGROUND
Httpd-child Dockerfile
FROM <address/to/httpd-parent-dockerfile>

EXPOSE 8080

# Labels consumed by OpenShift
LABEL   io.k8s.description="A basic Apache" ¥
        io.k8s.display-name="Apache HTTP Server" ¥
        io.openshift.expose-services="8080:http" ¥
        io.openshift.tags="apache, httpd"

# Optional
#RUN yum install -y --no-docs --disableplugin=subscription-manager httpd && ¥
#    yum clean all -y --disableplugin=subscription-manager

# Change webserver port to 8080
RUN sed -i "s/Listen 80/Listen 8080/g" /etc/httpd/conf/httpd.conf

# Permissions to allow container to run on OpenShift
RUN chgrp -R 0 /var/log/httpd /var/run/httpd && ¥
    chmod -R g=u /var/log/httpd /var/run/httpd

# Ensure clean run (omit if already configured in parent-Dockerfile)
RUN rm -rf /run/httpd && mkdir /run/httpd

# Run as non-privileged user
USER 1001

# Launch httpd (omit if already configured in parent-Dockerfile)
CMD /usr/sbin/httpd -DFOREGROUND
Another variation for httpd24
FROM registry.access.redhat.com/rhscl/httpd-24-rhel7

COPY src/ /var/www/html/

RUN echo “THIS IS INFORMATION” > /var/www/html/info.html

EXPOSE 8080

LABEL io.k8s.description=“xxx” io.k8s.display-name=“xx” ¥
     io.openshift.expose-service=“8080:http” io.openshift.tags=“xxx”

RUN sed -i ”s/Listen 80/Listen 8080/g” /etc/httpd/conf/httpd.conf

USER 1001

CMD run-httpd