username-distribution app

This web app distributes usernames and passwords to individuals who are taking part in an OpenShift based workshop. Deploying this app in OpenShift and exposing it publicly will give users a central access point, giving them their individual login credentials and links to lab guides.

First, a user must enter their name so they can be identified:

Then, they will be assigned a lab account if one is available:

Build and Push this as an Image

A scripts/ directory includes build and push scripts to create a build using the s2i CLI, and push it to quay.io.

Sample usage:

# This can take a while depending on your connection speed and machine specs
./scripts/image.build.sh

# Pushes the image to quay.io for the specified user.
# This is bound by your upload speed...so be patient ☕
QUAY_USER=your-username ./scripts/image.build.sh

How to Use

No matter what deployment option you choose below, ensure you set the environment variables described in the configuration section of this README.

Deploy to OpenShift using NodeShift

NOTE: This will use an in-memory store for sessions. If you restart/redeploy the application all state will be lost.

You can quickly deploy the application from your local host to OpenShift by running the following commands:

# first login to your cluster
oc login

# clone this repo, install deps, and deploy
git clone <this-repo-url> username-distribution
cd username-distribution
npm install
npm run deploy

The application will be deployed to a namespace called user-distribution with a public facing route exposed.

Deploy using OC CLI

NOTE: This method will use Redis to store session state. This means you can restart/redeploy the Node.js application without losing state. An example of flushing state is included below.

Run the following commands inside this repo:

oc login
oc new-project username-distribution
oc create -f openshift/project.json

If you'd like to flush the application state, i.e invalidate all assigned sessions/logins, run the following commands, or visit the /admin page of the application:

oc project username-distribution

# get the redis pod, and redis password
REDIS_POD=$(oc get pods -l deploymentconfig=redis -o jsonpath='{.items[0].metadata.name}')
REDIS_PASS=$(oc get secrets/redis -o jsonpath='{.data.database-password}' | base64 -D)

# execute a FLUSHALL redis command in the pod to delete user
# reservations and stored user session tokens
oc exec $REDIS_POD -- bash -c "redis-cli -a $REDIS_PASS FLUSHALL"

Configuration

Via Environment Variables

You can set these variables via a Deployment or DeploymentConfig, or by mounting a file named .env (see the .env.example in this repo) into the root of the application directory in the Pod running it.

NOTE: The .env.example is ignored by the application. Copy it and rename to .env to use it locally and as part of the npm run deploy script.

Name	Default	Substitutable	Description
LAB_TITLE	OCP4 Workshop	✅	This title will be displayed at the top of the page
LAB_DURATION_HOURS	2h	✅	The length of the event. Should be in a format per timestring docs
LAB_USER_COUNT	50	✅	The number of available user logins
LAB_USER_PASS	openshift	✅	The default password for all users
LAB_USER_ACCESS_TOKEN	redhatlabs	✅	Access token required to join the lab. Give this to your users.
LAB_BLOCKLIST	[]		Comma separated list of user numbers to block off. These numbers will not be assigned
LAB_USER_PREFIX	evals	✅	The username prefix for each account (eg. evals1, evals2)
LAB_MODULE_URLS	[]		Comma separated list of modules and module names, e.g "https://module.a;Lab 1,https://module.b;Lab2"
LAB_USER_PAD_ZERO	false	✅	Determines if user should be formatted as evals01 or "evals1" when user number is less than 10
LAB_ADMIN_PASS	pleasechangethis	✅	The password used to login at the /admin URL
LAB_REDIS_HOST	not set		The Redis instance to use. Provide only the hostname, and no port
LAB_REDIS_PASS	not set		The password used to access Redis
LAB_SESSION_SECRET	Randomly generated on startup	✅	The secret used to sign cookies.

For config names marked as Substitutable (✅) above, these names can be referenced in the value for LAB_MODULE_URLS to substitute the values using {{NAME}}. The values {{USERNAME}} and {{REALNAME}} may also be used to refer to the name the user gave and their assigned username. For example, to include the assigned username and number of users in the URLs generated for each user, set the variable LAB_MODULE_URLS to:

https://module.a?userid={{USERNAME}};The First Lab,https://module.b?userid={{USERNAME}}&count={{LAB_USER_COUNT}};The Final Lab

Via Code

Edit the config.js file and deploy in OpenShift. See above config values and descriptions.

Administration

As an admin, you can access the admin dashboard via the /admin route, e.g http://localhost:8080/admin. You will be prompted for a username and password to authenticate - use the following values:

• Username: admin
• Password: The value of LAB_ADMIN_PASS (default is pleasechangethis)

From the admin dashboard you can:

• See assigned accounts and the name of the person using it
• Revoke all user assignments - basically a reset button
• Unassign individual users - this will let someone else claim the account