Scope and fit
Keycloak is an open-source identity and access management project that lets teams centralize authentication for applications and services. DeployOpen can help configure a Keycloak environment that fits your identity sources, application protocols, and operational responsibilities.
Map applications and identity sources
A rollout should inventory each application, its supported protocol, redirect and logout behavior, required claims, and access requirements. Existing identity stores, account lifecycle processes, and MFA expectations need to be addressed before applications move to the shared provider.
Operate the identity service carefully
Identity infrastructure is a critical dependency. Secure administrative access, keep secrets out of source control, configure TLS and durable database storage, and rehearse backup, upgrade, and rollback procedures before production changes.
Decisions and tradeoffs
Use this table as a working review record. Replace assumptions with evidence from the target environment.
| Decision area | Working guidance |
|---|---|
| A shared identity layer | Keycloak can provide login and user federation for connected applications using standards such as OpenID Connect, OAuth 2.0, and SAML. Application teams integrate with a configured realm and client rather than independently owning every sign-in flow. |
| Map applications and identity sources | A rollout should inventory each application, its supported protocol, redirect and logout behavior, required claims, and access requirements. Existing identity stores, account lifecycle processes, and MFA expectations need to be addressed before applications move to the shared provider. |
| Operate the identity service carefully | Identity infrastructure is a critical dependency. Secure administrative access, keep secrets out of source control, configure TLS and durable database storage, and rehearse backup, upgrade, and rollback procedures before production changes. |
Implementation questions
What should the team decide about a shared identity layer?
Keycloak can provide login and user federation for connected applications using standards such as OpenID Connect, OAuth 2.0, and SAML. Application teams integrate with a configured realm and client rather than independently owning every sign-in flow. Use a named owner and a written acceptance check so this decision can be reviewed after deployment.
What should the team decide about map applications and identity sources?
A rollout should inventory each application, its supported protocol, redirect and logout behavior, required claims, and access requirements. Existing identity stores, account lifecycle processes, and MFA expectations need to be addressed before applications move to the shared provider. Use a named owner and a written acceptance check so this decision can be reviewed after deployment.
What should the team decide about operate the identity service carefully?
Identity infrastructure is a critical dependency. Secure administrative access, keep secrets out of source control, configure TLS and durable database storage, and rehearse backup, upgrade, and rollback procedures before production changes. Use a named owner and a written acceptance check so this decision can be reviewed after deployment.
Plan, build, verify, operate
A shared identity layer: Keycloak can provide login and user federation for connected applications using standards such as OpenID Connect, OAuth 2.0, and SAML. Application teams integrate with a configured realm and client rather than independently owning every sign-in flow. Record the result and the next owner before changing the next boundary.
Map applications and identity sources: A rollout should inventory each application, its supported protocol, redirect and logout behavior, required claims, and access requirements. Existing identity stores, account lifecycle processes, and MFA expectations need to be addressed before applications move to the shared provider. Record the result and the next owner before changing the next boundary.
Operate the identity service carefully: Identity infrastructure is a critical dependency. Secure administrative access, keep secrets out of source control, configure TLS and durable database storage, and rehearse backup, upgrade, and rollback procedures before production changes. Record the result and the next owner before changing the next boundary.
Deployment checks
Turn the page into a reviewable handover by assigning each check to a person and retaining its result.
Single sign-on for integrated applications
A shared identity layer: Single sign-on for integrated applications. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Identity brokering and user federation
A shared identity layer: Identity brokering and user federation. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Central administration for clients and users
A shared identity layer: Central administration for clients and users. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Register and test clients by environment
Map applications and identity sources: Register and test clients by environment. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Plan federation and account lifecycle
Map applications and identity sources: Plan federation and account lifecycle. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Set authentication flows and required claims
Map applications and identity sources: Set authentication flows and required claims. Confirm the owner, input, evidence, and acceptance check before this work moves into production.
Realm, client, and recovery design
Keycloak centralizes identity in realms. A realm has its own users, clients, roles, authentication flows, identity providers, and federation settings, so realm boundaries should reflect a real administrative or trust boundary. Avoid using a realm as an informal folder for applications. An application team must know which realm it relies on and who can change that realm's security settings.
For each client, record the protocol, exact redirect URIs, logout behaviour, required scopes, audience checks, token lifetimes, and whether it is a public or confidential client. Wildcard redirects make reviews difficult and can undermine an otherwise careful sign-in flow. Validate browser, service, and native-client flows separately because their redirect, secret, and session expectations differ.
User federation and identity brokering can connect an existing directory or upstream identity provider, but they add account matching, attribute mapping, outage, and lifecycle questions. Decide where an account is created, how groups and roles are assigned, what happens when a person leaves, and who resolves a duplicate or locked account. Test the first login, changed attributes, disabled account, and provider outage.
Keycloak needs a durable database and protected administrative access. Put TLS, admin network access, client secrets, signing keys, and database credentials in the deployment plan. Back up the data and export or document configuration in a form that can be reviewed and restored. Rehearse an upgrade against representative client integrations before production; a server that starts is not enough if applications reject its tokens.
Handover should give application owners a client register and a safe request path for redirect, role, or claim changes. The platform team needs an admin-access procedure, backup and restore record, signing-key rotation plan, and authentication-error monitoring. Identity changes deserve the same review discipline as production API changes.
Handover and ownership
Before handover, name the system owner, support path, access boundary, backup or recovery responsibility, and the condition that pauses a change.
Keep a short record of what was tested, what remains outside scope, and when the review should happen again.
