keycloak
Articles tagged with keycloak.
Fixing Keycloak 502 Bad Gateway Errors
Fix Keycloak 502 Bad Gateway errors behind a reverse proxy: proxy headers, timeouts, health checks, hostname configuration, and startup timing…
10 min read
Fixing CORS Errors with Keycloak
Fix Keycloak CORS errors: configure Web Origins on the client, understand preflight requests, and resolve 'blocked by CORS policy' issues…
10 min read
Zitadel Alternatives for Developers
Compare the best Zitadel alternatives for developers: Keycloak, Authentik, Ory, FusionAuth, SuperTokens, Auth0, and WorkOS, by license, deployment, and protocols.
13 min read
Token Introspection vs Local JWT Validation in Keycloak
Keycloak token introspection vs local JWT validation: how each works, the latency and revocation trade-offs, and which to use for…
10 min read
Keycloak Offline Tokens Explained
What Keycloak offline tokens are, how the offline_access scope works, how they differ from regular refresh tokens, and when to…
11 min read
How to Run the Keycloak Admin Console on a Separate Hostname Behind nginx (KC_HOSTNAME_ADMIN)
KC_HOSTNAME_ADMIN does work behind nginx. Serve the Keycloak admin console on a separate hostname with the proxy headers and server…
10 min read
Token and Claims Modeling in Keycloak: Reproducing Legacy IdP Behavior
Reproduce legacy IdP tokens in Keycloak so apps survive cutover. Build a claim contract, map UAA/SiteMinder/Okta claims, and diff old…
16 min read
Dual-Run IAM Migration: Switching Identity Providers Without Downtime
An IAM migration strategy for large estates: run old and new IdPs at once, cut apps over in waves, and…
14 min read
Keycloak and SiteMinder Federation: SAML and OIDC Integration Guide
Keycloak SiteMinder integration without a rip-and-replace: run both side by side, federate over SAML or OIDC, and migrate apps at…
15 min read
Keycloak Refresh Token Rotation: Setup and Best Practices
How to configure refresh token rotation in Keycloak: revoke-on-use, reuse detection, token lifetimes, SPA vs confidential clients, and security best…
11 min read
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