From dda3dff9b972362d1467f1b5268f84d9299d3a5e Mon Sep 17 00:00:00 2001
From: Lubomir Bucek <lubomir.bucek@eox.at>
Date: Tue, 30 Jun 2020 15:34:29 +0200
Subject: [PATCH] add note about labels
---
documentation/operator-guide/setup.rst | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/documentation/operator-guide/setup.rst b/documentation/operator-guide/setup.rst
index 6d8b570e..fbafa38b 100644
--- a/documentation/operator-guide/setup.rst
+++ b/documentation/operator-guide/setup.rst
@@ -68,6 +68,23 @@ This prints out a command that can be run on a machine to join the swarm:
docker swarm join --token <obtained token>
+It is possible to dedicate certain workers for example to contribute to ingestion exclusively, while others can take care only for rendering. This setup has benefits, when a mixed setup of nodes with different parameters is available.
+
+In order to set a node for example as `external`, to contribute in rendering only, one can simply run:
+
+.. code-block:: bash
+
+ docker node update --label-add type=external <node-id>
+
+Additionally, it is necessary to modify `placement` parameter in the docker compose file.
+
+.. code-block:: yaml
+
+ renderer:
+ deploy:
+ placement:
+ constraints:
+ - node.labels.type == external
Additional information for swarm management can be obtained in the official
`documentation of the project
--
GitLab