Keycloak

We are using Keycloak for web SSO (Single Sign-On). Clients may use Keycloak for authenticating users via SAML or OIDC (OpenID Connect).

• Admin login: https://keycloak.csclub.uwaterloo.ca/auth/admin
• Regular user login: https://keycloak.csclub.uwaterloo.ca/auth/realms/csc/account
• OIDC Auto Discovery URL: https://keycloak.csclub.uwaterloo.ca/auth/realms/csc/.well-known/openid-configuration

Prerequisites

OK so before we get started, there's this really useful feature in Keycloak called "Conditional user attribute" which allows you to create a flow which branches based on attributes a user may have. For some reason, this is enabled in the test suite for Keycloak, but is not available from the main application. So we're going to compile and inject it ourselves.

Clone https://git.csclub.uwaterloo.ca/public/keycloak-spi and run mvn clean package. This will create a JAR file called csc-keycloak-spi.jar in the target directory; we will need this later.

Database setup

Go to biloba or chamomile, run mysql, and run the following:

CREATE USER 'keycloak' IDENTIFIED BY 'replace_this_password';    
CREATE DATABASE keycloak CHARACTER SET utf8 COLLATE utf8_unicode_ci;    
GRANT ALL PRIVILEGES ON keycloak.* TO 'keycloak';    
FLUSH PRIVILEGES;

Kubernetes setup

We are running Keycloak on Kubernetes. This introduces some complications because it gets reverse proxied twice, and we also can't (or at least shouldn't) modify the filesystem of the Pod where it's running, since that Pod can get destroyed at any time. We still need to load that JAR file we just created, though, so we're going to place it into a PersistentVolume instead. We're going to do this by first creating a PersistentVolumeClaim, then claiming it in a temporary Pod which we'll use for shell access:

cat <<EOF | kubectl apply -f    
apiVersion: v1    
kind: PersistentVolumeClaim    
metadata:    
  namespace: syscom    
  name: keycloak-spi-pvc    
spec:    
  storageClassName: cloudstack-storage    
  accessModes:    
    - ReadWriteOnce    
  resources:    
    requests:    
      storage: 5Mi    
---    
apiVersion: v1    
kind: Pod    
metadata:    
  namespace: syscom    
  name: temp-pod    
spec:    
  containers:    
    - name: temp    
      image: alpine    
      volumeMounts:    
        - mountPath: "/data"    
          name: keycloak-spi-pv    
      stdin: true    
      stdinOnce: true    
      tty: true    
  volumes:    
    - name: keycloak-spi-pv    
      persistentVolumeClaim:    
        claimName: keycloak-spi-pvc
EOF