Dockerfile Best Practices

OpenShift on CentOS 7
OpenShift ''Getting Started'' on GitHub
Create builder images with S2I

DNS for OpenShift v3 cluster
OpenShift 3.6 Master Node config
Sudhaker's blog

• Packages needed:
  • yum install go
  • Install S2I from: https://github.com/openshift/source-to-image/releases
• ?

# Gen image via s2i ... using python container
IMGBASE=s2i-python-container
mkdir s2iloadgen
s2i create ${IMGBASE} s2iloadgen

• List all Bluejay-related images:

  docker images | grep -i bluejay

• Start container:

  docker run -d -P --name loadgen001 bluejay-loadgen

• Show port mapping:

  docker port loadgen001 22

• Stop container:

  docker container stop loadgen001

• Remove container:

  docker container rm loadgen001

• Remove image:

  docker image rm bluejay-loadgen

http://www.testautomationguru.com/jmeter-distributed-load-testing-using-docker/
https://hub.docker.com/_/openjdk/
https://eleanordare.com/blog/2018/5/3/using-a-jenkins-pipeline-to-run-jmeter-tests-in-openshift-bkba6
https://eleanordare.com/blog/2017/6/14/using-a-jenkins-pipeline-to-run-jmeter-tests-in-openshift
https://blog.openshift.com/running-any-docker-image-on-openshift-origin/
https://docs.openshift.com/online/architecture/core_concepts/builds_and_image_streams.html#pipeline-build
https://docs.openshift.com/online/dev_guide/application_lifecycle/new_app.html#dev-guide-new-app
https://docs.openshift.com/online/dev_guide/index.html
https://blog.openshift.com/getting-any-docker-image-running-in-your-own-openshift-cluster/

In order for containers to be able to resolve external names, change the dnsIP value in /var/lib/origin/openshift.local.config/node-localhost/node-config.yaml to the real LAN's DNS nameserver

/usr/bin/ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''
/usr/bin/ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''
/usr/bin/ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ''
/usr/bin/ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ''
/usr/bin/ssh-keygen -A

• https://hub.docker.com/r/jdeathe/centos-ssh

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