nomad-aliyun-autoscaler

The aliyun target plugin allows for the scaling of the Nomad cluster clients via creating and destroying aliyun ECS.

Requirements

• nomad autoscaler
• aliyun account

Documentation

Agent Configuration Options

To use the aliyun target plugin, the agent configuration needs to be populated with the appropriate target block. Currently, Acsess Key is the only method of authenticating with the API. You can manage your key at the aliyun control panel.

target "acs-ess" {
  driver = "acs-ess"
  config = {
    accessKeyId      = "AABBCC332211"
    accessKeySecret  = "EFG323DDEEFF"
  }
}

Policy Configuration Options

check "hashistack-allocated-cpu" {
  # ...
  target "acs-ess" {
      region                  = "cn-shanghai"
      scalingGroupId          = "asg-123aaabbbccc456"
      node_class              = "aliyunNodeClassName"
      node_purge              = "true"
      node_drain_deadline     = "1m"
      node_selector_strategy  = "empty"
  }
  # ...
}

• scalingGroupId (string: <required>) - The unique ID for aliyun scaling group, you need to create a scaling group at first.

• region (string: <required>) - The region to start in.

• node_class (string: <required>) - The Nomad client node class identifier used to group nodes into a pool of resource. Conflicts with datacenter.

• node_drain_deadline (duration: "15m") The Nomad drain deadline to use when performing node draining actions. Note that the default value for this setting differs from Nomad's default of 1h.

• node_drain_ignore_system_jobs (bool: "false") A boolean flag used to control if system jobs should be stopped when performing node draining actions.

• node_purge (bool: "false") A boolean flag to determine whether Nomad clients should be purged when performing scale in actions.

• node_selector_strategy (string: "least_busy") The strategy to use when selecting nodes for termination. Refer to the node selector strategy documentation for more information.