Install the latest OpenShift V3 on CentOS 7.x

Prerequisites: CentOS 7.x minimal install (tested on 7.2)

Updated 2016/06/05: to docker 1.11.x & OPENSHIFT_VERSION=v1.2.0

Mode: Single node setup, all manual.

Step 1: Install docker and tweak INSECURE_REGISTRY for smoother operation on “integrated docker registry”.

Fix DNS (as needed)

tee -a /etc/hosts << '__EOF__'

192.168.1.145 osv3-single
__EOF__

cat > /etc/yum.repos.d/docker.repo << '__EOF__'
[docker]
name=Docker Repository
baseurl=
enabled=1
gpgcheck=1
gpgkey=
__EOF__

yum -y install docker-engine wget git

Tweak for systemd way of setting INSECURE_REGISTRY

Ref:

mkdir -p /etc/systemd/system/docker.service.d

cat > /etc/systemd/system/docker.service.d/override.conf << '__EOF__'
[Service]
ExecStart=
ExecStart=/usr/bin/docker daemon --storage-driver=overlay --insecure-registry 172.30.0.0/16 -H fd://
__EOF__

systemctl daemon-reload
systemctl enable docker

systemctl restart docker

Step 2: Get the binaries

mkdir /opt/openshift-origin-v1.2
chmod 755 /opt /opt/openshift-origin-v1.2
cd /opt/openshift-origin-v1.2
wget
tar -zxvf openshift-origin-server-*.tar.gz --strip-components 1
rm -f openshift-origin-server-*.tar.gz

Step 3: Set and load the environments

cat > /etc/profile.d/openshift.sh << '__EOF__'
export OPENSHIFT=/opt/openshift-origin-v1.2
export OPENSHIFT_VERSION=v1.2.0
export PATH=$OPENSHIFT:$PATH
export KUBECONFIG=$OPENSHIFT/openshift.local.config/master/admin.kubeconfig
export CURL_CA_BUNDLE=$OPENSHIFT/openshift.local.config/master/ca.crt
__EOF__

chmod 755 /etc/profile.d/openshift.sh
. /etc/profile.d/openshift.sh

# optional: pre-fetch required docker images
docker pull openshift/origin-pod:$OPENSHIFT_VERSION
docker pull openshift/origin-sti-builder:$OPENSHIFT_VERSION
docker pull openshift/origin-docker-builder:$OPENSHIFT_VERSION
docker pull openshift/origin-deployer:$OPENSHIFT_VERSION
docker pull openshift/origin-docker-registry:$OPENSHIFT_VERSION
docker pull openshift/origin-haproxy-router:$OPENSHIFT_VERSION

Step 4a: Generate OpenShift V3 configuration files

./openshift start --write-config=openshift.local.config
chmod +r $OPENSHIFT/openshift.local.config/master/admin.kubeconfig
chmod +r $OPENSHIFT/openshift.local.config/master/openshift-registry.kubeconfig
chmod +r $OPENSHIFT/openshift.local.config/master/openshift-router.kubeconfig

Optional: change the default router subdomain in master-config.yaml

sed -i 's/router.default.svc.cluster.local/apps.sudhaker.com/' \
$OPENSHIFT/openshift.local.config/master/master-config.yaml

Step 4b: Add firewall rules

firewall-cmd --permanent --zone=public --add-port=80/tcp
firewall-cmd --permanent --zone=public --add-port=443/tcp
firewall-cmd --permanent --zone=public --add-port=8443/tcp
firewall-cmd --reload

Step 4c: Launch OpenShift V3

nohup ./openshift start &

Or install as serviced daemon and then launch.

cat > /etc/systemd/system/openshift-origin.service << '__EOF__'
[Unit]
Description=Origin Master Service
After=docker.service
Requires=docker.service

[Service]
Restart=always
RestartSec=10s
ExecStart=/opt/openshift-origin-v1.2/openshift start
WorkingDirectory=/opt/openshift-origin-v1.2

[Install]
WantedBy=multi-user.target
__EOF__

systemctl daemon-reload
systemctl enable openshift-origin
systemctl start openshift-origin

Basic product installation is completed. Congratulations!

[root@osv3-single openshift-origin-v1.1]# oc login -u system:admin -n default
You have access to the following projects and can switch between them with 'oc project ':

* default (current)
* openshift
* openshift-infra

Using project "default".

Step 5a: Create an admin account

# to create an admin user for management
oadm policy add-cluster-role-to-user cluster-admin admin

Step 5b: Install the integrated registry (new version has simplified the process)

mkdir /opt/openshift-registry
chcon -Rt svirt_sandbox_file_t /opt/openshift-registry
chown 1001.root /opt/openshift-registry
oadm policy add-scc-to-user privileged -z registry
oadm registry --service-account=registry --mount-host=/opt/openshift-registry

[root@osv3-single openshift-origin-v1.2]# oc get svc docker-registry
NAME              CLUSTER-IP    EXTERNAL-IP   PORT(S)    AGE
docker-registry   172.30.1.10           5000/TCP   10m

Step 5c: Install the router

	
	
oadm policy add-scc-to-user hostnetwork -z router
oadm router router --replicas=1 --service-account=router

Verify:

[root@osv3-single openshift-origin-v1.2]# oc status
In project default on server

svc/docker-registry - 172.30.1.10:5000
dc/docker-registry deploys docker.io/openshift/origin-docker-registry:v1.2.0-rc1
deployment #1 deployed 9 minutes ago - 1 pod

svc/kubernetes - 172.30.0.1 ports 443, 53, 53

svc/router - 172.30.30.140 ports 80, 443, 1936
dc/router deploys docker.io/openshift/origin-haproxy-router:v1.2.0-rc1
deployment #1 deployed 2 minutes ago - 1 pod

View details with 'oc describe /' or list everything with 'oc get all'.

Step 6: Install the default image-streams (after registry is deployed and live)

cd ~
git clone
cd openshift-ansible/roles/openshift_examples/files/examples/latest/
for f in image-streams/image-streams-centos7.json; do cat $f | oc create -n openshift -f -; done
for f in db-templates/*.json; do cat $f | oc create -n openshift -f -; done
for f in quickstart-templates/*.json; do cat $f | oc create -n openshift -f -; done