Clever Geek Handbook

Spot Instances Support DCOS Support

Can I change the DCOS template to use instances of stains? I looked around and there doesn't seem to be much information on this.

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Ok, given the DCOS pattern , the LaunchConfiguration for the slaves looks like this: (I shortened it a bit)

"MasterLaunchConfig": {
  "Type": "AWS::AutoScaling::LaunchConfiguration",
  "Properties": {
    "IamInstanceProfile": { "Ref": "MasterInstanceProfile" },
    "SecurityGroups": [ ... ],
    "ImageId": { ... },
    "InstanceType": { ... },
    "KeyName": { "Ref": "KeyName" },
    "UserData": { ... }
  }
}


To get started, all you have to do is add SpotPrice

. The value SpotPrice

is obviously the maximum price you want to pay. You will probably need to do more with autoscaling, especially alarms and time of day. So here's your new one LaunchConfiguration

with a dotted price of $ 1.00 per hour:

"MasterLaunchConfig": {
  "Type": "AWS::AutoScaling::LaunchConfiguration",
  "Properties": {
    "IamInstanceProfile": { "Ref": "MasterInstanceProfile" },
    "SecurityGroups": [ ... ],
    "ImageId": { ... },
    "InstanceType": { ... },
    "KeyName": { "Ref": "KeyName" },
    "UserData": { ... },
    "SpotPrice": 1.00
  }
}
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