Do not display error log for initial admin creation

Closes #15789

Co-authored-by: Steve Weixel <steve.weixel@quantum.com>

quarkus/runtime/src/main/java/org/keycloak/quarkus/runtime/KeycloakMain.java

@@ -156,10 +156,7 @@ public class KeycloakMain implements QuarkusApplication {
         try {
             KeycloakModelUtils.runJobInTransaction(sessionFactory, session -> {
                 new ApplianceBootstrap(session).createMasterRealmUser(adminUserName, adminPassword);
-                ServicesLogger.LOGGER.addUserSuccess(adminUserName, Config.getAdminRealm());
             });
-        } catch (IllegalStateException e) {
-            ServicesLogger.LOGGER.addUserFailedUserExists(adminUserName, Config.getAdminRealm());
         } catch (Throwable t) {
             ServicesLogger.LOGGER.addUserFailed(t, adminUserName, Config.getAdminRealm());
         }

quarkus/tests/integration/src/test/java/org/keycloak/it/cli/dist/BuildAndStartDistTest.java

@@ -17,15 +17,19 @@
 
 package org.keycloak.it.cli.dist;
 
+import io.quarkus.test.junit.main.Launch;
+import io.quarkus.test.junit.main.LaunchResult;
 import org.junit.jupiter.api.MethodOrderer.OrderAnnotation;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.TestMethodOrder;
 import org.keycloak.it.junit5.extension.CLIResult;
 import org.keycloak.it.junit5.extension.DistributionTest;
 import org.keycloak.it.junit5.extension.RawDistOnly;
+import org.keycloak.it.junit5.extension.WithEnvVars;
 import org.keycloak.it.utils.KeycloakDistribution;
 import org.keycloak.it.utils.RawKeycloakDistribution;
 
+import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.keycloak.quarkus.runtime.cli.command.AbstractStartCommand.OPTIMIZED_BUILD_OPTION_LONG;
 
 @DistributionTest
@@ -63,4 +67,30 @@ public class BuildAndStartDistTest {
         cliResult.assertBuild();
         cliResult.assertStarted();
     }
+
+    @Test
+    @WithEnvVars({"KEYCLOAK_ADMIN", "admin123", "KEYCLOAK_ADMIN_PASSWORD", "admin123"})
+    @Launch({"start-dev"})
+    void testCreateAdmin(KeycloakDistribution dist, LaunchResult result) {
+        assertAdminCreation(dist, result, "admin123", "admin123", "admin123");
+    }
+
+    @Test
+    @WithEnvVars({"KEYCLOAK_ADMIN", "admin123", "KEYCLOAK_ADMIN_PASSWORD", "admin123"})
+    @Launch({"start-dev"})
+    void testCreateDifferentAdmin(KeycloakDistribution dist, LaunchResult result) {
+        assertAdminCreation(dist, result, "admin123", "new-admin", "new-admin");
+    }
+
+    private void assertAdminCreation(KeycloakDistribution dist, LaunchResult result, String initialUsername, String nextUsername, String password) {
+        assertTrue(result.getOutput().contains("Added user '" + initialUsername + "' to realm 'master'"),
+                () -> "The Output:\n" + result.getOutput() + "doesn't contains the expected string.");
+
+        dist.setEnvVar("KEYCLOAK_ADMIN", nextUsername);
+        dist.setEnvVar("KEYCLOAK_ADMIN_PASSWORD", password);
+        CLIResult cliResult = dist.run("start-dev", "--log-level=debug");
+
+        cliResult.assertMessage("Skipping create admin user. Admin already exists in realm 'master'.");
+        cliResult.assertStartedDevMode();
+    }
 }

services/src/main/java/org/keycloak/services/ServicesLogger.java

@@ -467,4 +467,8 @@ public interface ServicesLogger extends BasicLogger {
     @Message(id=106, value="Created script engine '%s', version '%s' for the mime type '%s'")
     @Once
     void scriptEngineCreated(String engineName, String engineVersion, String mimeType);
+
+    @LogMessage(level = DEBUG)
+    @Message(id=107, value="Skipping create admin user. Admin already exists in realm '%s'.")
+    void addAdminUserFailedAdminExists(String realm);
 }

services/src/main/java/org/keycloak/services/managers/ApplianceBootstrap.java

@@ -97,7 +97,8 @@ public class ApplianceBootstrap {
         session.getContext().setRealm(realm);
 
         if (session.users().getUsersCount(realm) > 0) {
-            throw new IllegalStateException("Can't create initial user as users already exists");
+            ServicesLogger.LOGGER.addAdminUserFailedAdminExists(Config.getAdminRealm());
+            return;
         }
 
         UserModel adminUser = session.users().addUser(realm, username);
@@ -108,6 +109,8 @@ public class ApplianceBootstrap {
 
         RoleModel adminRole = realm.getRole(AdminRoles.ADMIN);
         adminUser.grantRole(adminRole);
+
+        ServicesLogger.LOGGER.addUserSuccess(username, Config.getAdminRealm());
     }
 
 }