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82 lines
2.1 KiB
ReStructuredText
82 lines
2.1 KiB
ReStructuredText
Control a MongoDB collection in configuration management
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########################################################
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:date: 2013-10-14 21:39
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:author: Russell Ballestrini
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:tags: DevOps, Guide, Salt
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:slug: control-a-mongodb-collection-in-configuration-management
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:status: published
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This post explains how to use configuration management (Salt Stack) to
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completely control a MongoDB collection. In our example we want to
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control a store's collection of plans.
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First we create a JSON representation of the collection.
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**mongodb/plan.json:**
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::
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{
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"_id" : { "$oid" : "4ef8b9e2be329f491d98f74b" },
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"cost" : 20, "description" : "development",
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"name" : "good", "count" : 6000
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}
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{
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"_id" : { "$oid" : "4ef8b9e8be329f491d98f74c" },
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"cost" : 60, "description" : "freelancers",
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"name" : "better", "count" : 36000
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}
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{
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"_id" : { "$oid" : "4ef8b9f0be329f491d98f74d" },
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"cost" : 180, "description" : "production",
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"name" : "best", "count" : 162000
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}
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.. raw:: html
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</p>
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Next we configure a salt state formula to manage the JSON file and watch
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it for changes.
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**mongodb/init.sls:**
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::
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# install mongodb server
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mongodb-server:
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pkg:
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- installed
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# manage the store's plan.json
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/tmp/plan.json:
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file.managed:
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- source: salt://mongodb/plan.json
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- user: root
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- group: root
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- mode: 644
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# import the plan collection if it changes
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import-plan-collection:
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cmd.wait:
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- name: mongoimport --db=store --collection=plan --upsert /tmp/plan.json
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- require:
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- pkg: mongodb-server
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- watch:
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- file: /tmp/plan.json
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.. raw:: html
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</p>
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*Now whenever plan.json is altered in configuration management, the file
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on the minion will update which will trigger a mongoimport with upsert
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to occur.*
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Optionally, we could replace ``--upsert`` with ``--drop`` which will
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drop the collection before re-importing thus removing stale records.
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We now have a version controlled JSON file in configuration management
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and the power of MongoDB Document Objects in our application code!
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.. contents::
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