Problem: Loadbalancing OIDC does not work correctly

Problem

Logging in via the OIDC App over a loadbalanced server- farm triggers (more or less random) authentication failures.

Environment

UCS 4.x
UCS 5.x

Solution

As per Bugreport, please ensure that:

  • The cryptographic keys of the konnectd - app are synchronized over all relevant servers:
    • /etc/kopano/konnectd-encryption-secret.key
    • /etc/kopano/konnectd-signing-private-key.pem
  • The following routes to the relevant servers are configured towards one server only, adding other server(s) as backup only:
    • /.well-known/openid-configuration
    • /konnect/v1
    • /signin
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