diff --git a/changelog/unreleased/issue-19207.toml b/changelog/unreleased/issue-19207.toml
new file mode 100644
index 000000000000..c0489fce7059
--- /dev/null
+++ b/changelog/unreleased/issue-19207.toml
@@ -0,0 +1,5 @@
+type="c"
+message="Lazy configuration processing for datanode, collecting all errors in one go."
+
+issues=["19207"]
+pulls=["19801"]
diff --git a/data-node/src/main/java/org/graylog/datanode/bootstrap/CmdLineTool.java b/data-node/src/main/java/org/graylog/datanode/bootstrap/CmdLineTool.java
index a75fd423350f..5bded69c587b 100644
--- a/data-node/src/main/java/org/graylog/datanode/bootstrap/CmdLineTool.java
+++ b/data-node/src/main/java/org/graylog/datanode/bootstrap/CmdLineTool.java
@@ -269,8 +269,6 @@ public void doRun(Level logLevel) {
 
         coreConfigInjector = setupCoreConfigInjector();
 
-        processConfiguration(jadConfig);
-
         if (isDumpConfig()) {
             dumpCurrentConfigAndExit();
         }
@@ -421,7 +419,7 @@ private void installConfigRepositories() {
 
     protected void processConfiguration(JadConfig jadConfig) {
         try {
-            jadConfig.process();
+            jadConfig.processFailingLazily();
         } catch (RepositoryException e) {
             LOG.error("Couldn't load configuration: {}", e.getMessage());
             System.exit(1);