diff --git a/modules/jenkins/manifests/slave.pp b/modules/jenkins/manifests/slave.pp
index 23e24ecb9a..9bf818d6ab 100644
--- a/modules/jenkins/manifests/slave.pp
+++ b/modules/jenkins/manifests/slave.pp
@@ -275,4 +275,20 @@ class jenkins::slave(
 
   }
 
+  # Increase syslog message size in order to capture
+  # python tracebacks with syslog.
+  file { '/etc/rsyslog.d/99-maxsize.conf':
+    ensure  => present,
+    # Note MaxMessageSize is not a puppet variable.
+    content => '$MaxMessageSize 64k',
+    owner   => 'root',
+    group   => 'root',
+    mode    => '0644',
+  }
+
+  service { 'rsyslog':
+    ensure    => running,
+    enable    => true,
+    subscribe => File['/etc/rsyslog.d/99-maxsize.conf'],
+  }
 }