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Add documentation for --concurrency switch #147

merged 1 commit into from

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Realized I didn't add any documentation for the new --concurrency switch. Should cover the basics and make people aware of the feature.

@tobami tobami merged commit 6019f43 into tobami:master
@philk philk deleted the philk:parallel_doc branch
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Commits on Jan 28, 2013
  1. @philk
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@@ -223,6 +223,14 @@ deleted from the node, and verbose will also be true
Once a node has a config file, the command you will be using most often is `fix node:MYNODE`, which allows you to repeatedly tweak the recipes and attributes for a node and rerun the configuration.
+### Configuring nodes in parallel
+By default LittleChef configures nodes serially however it can also use Fabric's parallel SSH support to configure multiple nodes in parallel. All commands are supported (node, nodes_with_role, ssh, role, and recipe)
+* `fix --concurrency node:NODELIST`: will configure multiple nodes in parallel
+* `fix --concurrency node:NODELIST ssh:COMMAND`: will run an ssh command on multiple nodes in parallel
+* `fix --concurrency 5 node:NODELIST`: will configure multiple nodes in parallel but limit to 5 connections
### Consulting the inventory
* `fix list_nodes`: Lists all configured nodes, showing its associated recipes and roles
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