Failed Install - CE 25.6.1 - AlmaLinux 8 - Multi-Server

Hello everyone!

Got a task to deploy CE in Multi-Server setup.

Have 2 VMs with AlmaLinux 8.10 (latest kernel, updated on 31.07.2025)

I've had a plan to deploy 2 nodes:

• 1 node - a Directory/Mesh Server + Database + Mailbox (this node is internal and has a direct connection to external node). Internal IP is 10.30.3.111/24
• 2 node - a Proxy and MTA node (has direct connection to internal node on all ports) - External IP.

I have followed the instructions on Multi-Server Setup Guide.

I've successfully set up Mesh, Directory and Database on 1 node.

But after I've tried to install Mailbox role - I've received errors. I've tried to zmcontrol restart - no efforts.

Host mail.domain.internal
	directory-server        Running
	mailbox                 Stopped
	 --Carbonio Advanced installed.
	 --Checking advanced modules status..........
	 --Failed to check advanced modules status. Carbonio Advanced is not running.
	 --Check logs for more information.
		zmmailboxdctl is not running.
	service webapp          Stopped
		zmmailboxdctl is not running.
	service-discover        Running
	stats                   Running
	config service          Running

In /var/log/messages there are errors

Jul 31 11:33:54 mail service-discoverd[16390]: 2025-07-31T11:33:54.861+0300 [WARN]  agent: Check TCP connection failed: check=service:carbonio-advanced error="dial tcp 127.78.0.25:8742: connect: connection refused"

Jul 31 11:34:00 mail service-discoverd[16390]: 2025-07-31T11:34:00.701+0300 [WARN]  agent: Check TCP connection failed: check=service:carbonio-address-book error="dial tcp 127.0.0.1:8388: connect: connection refused"

Jul 31 11:34:02 mail carbonio-user-management[35014]: Exception in thread "main" com.google.inject.ProvisionException: Unable to provision, see the following errors:
Jul 31 11:34:02 mail carbonio-user-management[35014]: 1) [Guice/ErrorInCustomProvider]: InaccessibleWSDLException: 2 counts of InaccessibleWSDLException.
Jul 31 11:34:02 mail carbonio-user-management[35014]: IOException: Server returned HTTP response code: 503 for URL:  removed link 
Jul 31 11:34:02 mail carbonio-user-management[35014]: IOException: Server returned HTTP response code: 503 for URL:  removed link ?wsdl
Jul 31 11:34:02 mail carbonio-user-management[35014]:  at UserManagementModule.provideServiceClient(UserManagementModule.java:54)

So the main question - what can I do wrong with the installation?

The only thing I've missed from instruction on the Mailbox Role Installation - Service Discover Agent, because it has refused to set up with service-discover-server.x86_64