Keycloak && IS cluster

[AlexeiKlimenko]

Hello!
We're using the same config of cache keycloak as described here - https://github.com/thomasdarimont/keycloak-project-example/blob/main/deployments/local/clusterx/haproxy-external-ispn/cache-ispn-remote.xml
Keycloak (1 bare metal instance) - 18.0.0 (quakus)
IS cluster (2 nodes) - 13.0.9

But after "sudo bin/kc.sh start --auto-build --cache=ispn --cache-config-file=cache.xml --cache-stack tcp --https-port 443" faced with error

ERROR [org.keycloak.quarkus.runtime.cli.ExecutionExceptionHandler] (main) ERROR: Multiple datacenters available, but site name is not configured! Check your configuration

Have you got any idea what does he expect for?