Hi everyone,
I hope you will be able to help me about a strange behavior I have 
I’m testing Keycloak in a cluster context (domain).
I builded 2 local VMs (VirtualBox) on my computer:
- OS: Ubuntu 20.04 LTS
- Keycloak version: 16.1.0
- no firewall
Details about VM 1/2:
- 1 * domain controler (port 9990)
- 1 * host controler
- 1 * server (port 8180)
Details about VM 2/2:
- 1 * host controler
- 1 * server (port 8180)
I builded a PostgreSQL database to share “objects” (don’t know if the word is the right word) between my 2 servers.
In HAL Management Console > Runtime > Topology I can see everything I configured and it’s green.
Scenario 1:
- I connect to the Keycloak 1/2 (<IP of VM 1>:8180/auth)
- I connect to the Keycloak 2/2 (<IP of VM 2>:8180/auth)
- from Keycloak 1/2 I create a user
- from Keycloak 2/2 I can see it directly
→ it works as expected
Scenario 2:
- I connect to the Keycloak 1/2 (<IP of VM 1>:8180/auth)
- I connect to the Keycloak 2/2 (<IP of VM 2>:8180/auth)
- from Keycloak 2/2 I create a user
- from Keycloak 1/2 I can see it directly
→ it works as expected
Scenario 3:
- I connect to the Keycloak 1/2 (<IP of VM 1>:8180/auth)
- I connect to the Keycloak 2/2 (<IP of VM 2>:8180/auth)
- from Keycloak 1/2 I create a new Realm
- from Keycloak 2/2 I can’t see it directly: I need to reload the server from HAL Management Console
→ it doesn’t work as expected
Scenario 4:
- I connect to the Keycloak 1/2 (<IP of VM 1>:8180/auth)
- I connect to the Keycloak 2/2 (<IP of VM 2>:8180/auth)
- from Keycloak 2/2 I create a new Realm
- from Keycloak 1/2 I can see it directly
→ it works as expected
Is someone knows why Scenario 3 has this behavior?
I expect to be able to create objects / to configure my keycloak from any instance without having to reload all other instances 
It’s probably a parameter in my configuration file but I confess I’m lost
Thank you very much