Certainly! Here are the steps to configure OAuth2 authentication using Kubernetes as the provider: 1. Create a secret containing your SSL certificate (if using HTTPS) and private key: ``` kubectl create secret tls --key= --cert= ``` Replace ``, ``, and `` with appropriate values. 2. Create a Kubernetes service that exposes the Kubernetes API server securely over HTTPS: ``` apiVersion: v1 kind: Service metadata: name: kubernetes namespace: default spec: ports: - name: https port: 443 targetPort: 6443 selector: component: apiserver type: ClusterIP ``` 3. Create an OAuth2 API client: ``` apiVersion: v1 kind: Secret metadata: name: oauth2-client-secret namespace: default data: client_id: client_secret: type: Opaque ``` Replace `` and `` with values from your OAuth2 provider. 4. Create an OAuth2 provider configuration for Kubernetes: ``` apiVersion: v1 kind: ConfigMap metadata: name: kube-oidc-config namespace: default data: issuer: https:///oauth2/token client_id: client_secret: /etc/oauth2-client-secret/client_secret scopes: ["openid", "email", "profile"] redirect_uri: https:///oauth2/callback signing_algs: ["RS256"] response_mode: form_post insecure_skip_verify: false username_claim: email groups_claim: groups ``` Replace `` and `` with values from your environment. 5. Create a Kubernetes deployment for the OAuth2 proxy: ``` apiVersion: apps/v1 kind: Deployment metadata: name: oauth2-proxy namespace: default spec: replicas: 1 selector: matchLabels: app: oauth2-proxy template: metadata: labels: app: oauth2-proxy spec: containers: - name: oauth2-proxy image: quay.io/oauth2-proxy/oauth2-proxy:v7.1.3 command: - oauth2-proxy - --config=/etc/oauth2-proxy/oauth2-proxy.cfg volumeMounts: - name: oauth2-client-secret mountPath: /etc/oauth2-client-secret - name: oauth2-proxy-cfg mountPath: /etc/oauth2-proxy volumes: - name: oauth2-client-secret secret: secretName: oauth2-client-secret - name: oauth2-proxy-cfg configMap: name: oauth2-proxy-config items: - key: oauth2-proxy.cfg path: oauth2-proxy.cfg ``` 6. Create a ConfigMap containing the OAuth2 proxy configuration: ``` apiVersion: v1 kind: ConfigMap metadata: name: oauth2-proxy-config namespace: default data: oauth2-proxy.cfg: | http_address = "0.0.0.0:4180" upstreams = ["https://:443"] oidc_issuer_url = "https:///oauth2/token" client_id = "" client_secret = "/etc/oauth2-client-secret/client_secret" email_domain = "" cookie_secret = "" cookie_secure = true cookie_httponly = true cookie_refresh = 1h cookie_domain = "" cookie_duration = 24h pass_user_headers = true set_user_headers = true display_htpasswd_form = false pass_basic_auth = false skip_provider_button = true upstream_refresh_interval = 60s skip_jwks_fetch = true insecure_oidc_allow_unverified_email = false insecure_skip_email_verified_check = false scope = "openid email profile groups" redirect_url = "https:///oauth2/callback" ssl_insecure_skip_verify = false ssl_client_cert = "/etc/ssl/client.crt" ssl_client_key = "/etc/ssl