Error on executing remote operation server, no server available with Java Client on K8S HA installation

[cdelbecq]

Here after the detail of the issue i got => any idea ?

1/ Context of the issue :

     - K8S cluster OK on localhost:2480 , installed on local Docker Desktop
     - version 25.1.1
     - Studio OK with commands working fine on the DB i created with name "pocdb"
     - client side : java 17 console client with RemoreDatabase connection strategie
     - log : default.svc.cluster.local:2424) successfully connected

2 / Server logs :

2025-02-05 16:05:33.698 INFO [HAServer] NEW CLUSTER CONFIGURATION

+----------+--------------------------------------------------+-------+-------+---------+-------+-----------+-------+
|SERVER |HOST:PORT |ROLE |STATUS |JOINED ON|LEFT ON|THROUGHPUT |LATENCY|
+----------+--------------------------------------------------+-------+-------+---------+-------+-----------+-------+
|arcadedb-0|arcadedb-0.arcadedb.default.svc.cluster.local:2424|Leader |ONLINE |16:05:32 | | | |
|arcadedb-1|arcadedb-1.arcadedb.default.svc.cluster.local:2424|Replica|JOINING| | |111b (0b/s)| |
+----------+--------------------------------------------------+-------+-------+---------+-------+-----------+-------+

2025-02-05 16:05:33.728 INFO [Leader2ReplicaNetworkExecutor$4] Replica server 'arcadedb-1' is ONLINE
2025-02-05 16:05:33.730 INFO [HAServer] NEW CLUSTER CONFIGURATION

+----------+--------------------------------------------------+-------+------+---------+-------+-----------------+-------+
|SERVER |HOST:PORT |ROLE |STATUS|JOINED ON|LEFT ON|THROUGHPUT |LATENCY|
+----------+--------------------------------------------------+-------+------+---------+-------+-----------------+-------+
|arcadedb-0|arcadedb-0.arcadedb.default.svc.cluster.local:2424|Leader |ONLINE|16:05:32 | | | |
|arcadedb-1|arcadedb-1.arcadedb.default.svc.cluster.local:2424|Replica|ONLINE|16:05:33 | |111b (108.40KB/s)| |
+----------+--------------------------------------------------+-------+------+---------+-------+-----------------+-------+

2025-02-05 16:05:33.731 INFO [HAServer] Change election status from LEADER_WAITING_FOR_QUORUM to DONE
2025-02-05 16:05:34.755 INFO [Leader2ReplicaNetworkExecutor] Remote Replica server 'arcadedb-2' (arcadedb-2.arcadedb.default.svc.cluster.local:2424) successfully connected

3/ here after the code snipped of my java client**

package com.hypervolume;

import java.util.ArrayList;
import java.util.List;
import com.arcadedb.remote.RemoteDatabase;
import com.arcadedb.remote.RemoteServer;

/**

• Hello world!

*/
public class App
{
public static void main( String[] args )
{

    System.out.println( "Starting HypervolumeDB POC" );
    
    RemoteServer server = new RemoteServer("localhost", 2480, "root", "selfcockpit");
    
    var leader = server.getLeaderAddress(); // =======> OK
    if (!server.exists("pocdb")) // ======> OK
         server.create("pocdb"); ====> Not
  
    var replicates = server.getReplicaAddresses(); //====> OK
    List<String> databases= new ArrayList<>();
    databases.add("pocdb");
    String[] roles = {"reader", "writer"};
    try {
        server.createUser("selfcockpit", "selfcockpit",databases); // ====> OK the first Time
    } catch (Exception e) {
        e.printStackTrace();
    }
    
    RemoteDatabase db = new RemoteDatabase("localhost", 2480, "pocdb", "selfcockpit", "selfcockpit"); // =====> OK
    var classp = db.getClass(); //=====> OK
    var dbn = db.getName(); // ====> OK
    List<String> dbs = server.databases(); // =====> KO with com.arcadedb.remote.RemoteException: Error on executing remote operation server, no server available
    db.isOpen();
        if (!db.isOpen())
            {
                System.out.println( "!!!!!!!!!!! db pocdb not opened !!!!!!!!!!" );
            }   
        else
        {
                 System.out.println( "db universe opened " ); // =====> OK
        }           
        String schema =
            """
                create vertex type Customer if not exists;
                create property Customer.name if not exists string;
                create property Customer.surname if not exists string;
                create index if not exists on Customer (name, surname) unique;
            """;
        db.command("sqlscript", schema); // =====> KO with no server available exeption
       
        db.close();
        
        }

}

4/ The stack trace logs

Starting HypervolumeDB POC
Exception in thread "main" com.arcadedb.remote.RemoteException: Error on executing remote operation server, no server available
at com.arcadedb.remote.RemoteHttpComponent.httpCommand(RemoteHttpComponent.java:196)
at com.arcadedb.remote.RemoteServer.serverCommand(RemoteServer.java:131)
at com.arcadedb.remote.RemoteServer.databases(RemoteServer.java:48)
at com.hypervolume.App.main(App.java:53)
Caused by: java.net.UnknownHostException: arcadedb-0.arcadedb.default.svc.cluster.local
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:572)
at java.base/java.net.Socket.connect(Socket.java:633)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:178)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:533)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:638)
at java.base/sun.net.www.http.HttpClient.(HttpClient.java:281)
at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:386)
at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:408)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1324)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1257)
at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1143)
at java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1072)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getOutputStream0(HttpURLConnection.java:1466)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getOutputStream(HttpURLConnection.java:1437)
at com.arcadedb.remote.RemoteHttpComponent.setRequestPayload(RemoteHttpComponent.java:381)
at com.arcadedb.remote.RemoteHttpComponent.httpCommand(RemoteHttpComponent.java:165)
... 3 more