fleetd: support operators in metadata

Update documentation. Fixes coreos#1143
dongsupark · Jun 3, 2016 · 0ee6bdf · 0ee6bdf
1 parent a2267f3
commit 0ee6bdf
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diff --git a/Documentation/unit-files-and-scheduling.md b/Documentation/unit-files-and-scheduling.md
@@ -179,6 +179,14 @@ app.service     282f949f.../10.10.20.1  active  running
 app.service     fd1d3e94.../10.0.0.1    active  running
 ```
 
+`MachineMetadata` also support relational operators, including `<=`, `>=`, `<`, `>` and `!=`:
+
+```
+[X-Fleet]
+MachineMetadata=ram<1024
+```
+This requires an eligible machine to have the `ram` less than 1024. The value must be numeral when using `<=`, `>=`, `<` or `>`.
+
 A machine is not automatically configured with metadata.
 A deployer may define machine metadata using the `metadata` [config option][config-option].