diff --git a/src/applications/harbormaster/management/HarbormasterManagementRebuildLogWorkflow.php b/src/applications/harbormaster/management/HarbormasterManagementRebuildLogWorkflow.php
--- a/src/applications/harbormaster/management/HarbormasterManagementRebuildLogWorkflow.php
+++ b/src/applications/harbormaster/management/HarbormasterManagementRebuildLogWorkflow.php
@@ -6,7 +6,10 @@
   protected function didConstruct() {
     $this
       ->setName('rebuild-log')
-      ->setExamples('**rebuild-log** --id __id__ [__options__]')
+      ->setExamples(
+        pht(
+          "**rebuild-log** --id __id__ [__options__]\n".
+          "**rebuild-log** --all"))
       ->setSynopsis(
         pht(
           'Rebuild the file and summary for a log. This is primarily '.
@@ -18,31 +21,76 @@
             'param' => 'id',
             'help' => pht('Log to rebuild.'),
           ),
+          array(
+            'name' => 'all',
+            'help' => pht('Rebuild all logs.'),
+          ),
+          array(
+            'name' => 'force',
+            'help' => pht(
+              'Force logs to rebuild even if they appear to be in good '.
+              'shape already.'),
+          ),
         ));
   }
 
   public function execute(PhutilArgumentParser $args) {
     $viewer = $this->getViewer();
 
+    $is_force = $args->getArg('force');
+
     $log_id = $args->getArg('id');
-    if (!$log_id) {
+    $is_all = $args->getArg('all');
+
+    if (!$is_all && !$log_id) {
       throw new PhutilArgumentUsageException(
-        pht('Choose a build log to rebuild with "--id".'));
+        pht(
+          'Choose a build log to rebuild with "--id", or rebuild all '.
+          'logs with "--all".'));
     }
 
-    $log = id(new HarbormasterBuildLogQuery())
-      ->setViewer($viewer)
-      ->withIDs(array($log_id))
-      ->executeOne();
-    if (!$log) {
+    if ($is_all && $log_id) {
       throw new PhutilArgumentUsageException(
         pht(
-          'Unable to load build log "%s".',
-          $log_id));
+          'You can not specify both "--id" and "--all". Choose one or '.
+          'the other.'));
+    }
+
+    if ($log_id) {
+      $log = id(new HarbormasterBuildLogQuery())
+        ->setViewer($viewer)
+        ->withIDs(array($log_id))
+        ->executeOne();
+      if (!$log) {
+        throw new PhutilArgumentUsageException(
+          pht(
+            'Unable to load build log "%s".',
+            $log_id));
+      }
+      $logs = array($log);
+    } else {
+      $logs = new LiskMigrationIterator(new HarbormasterBuildLog());
     }
 
     PhabricatorWorker::setRunAllTasksInProcess(true);
-    $log->scheduleRebuild(true);
+
+    foreach ($logs as $log) {
+      echo tsprintf(
+        "%s\n",
+        pht(
+          'Rebuilding log "%s"...',
+          pht('Build Log %d', $log->getID())));
+
+      try {
+        $log->scheduleRebuild($is_force);
+      } catch (Exception $ex) {
+        if ($is_all) {
+          phlog($ex);
+        } else {
+          throw $ex;
+        }
+      }
+    }
 
     echo tsprintf(
       "%s\n",