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OpsWorks Resource Management

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  5. OpsWorks Resource Management

Use Resource Management to

  • Register a resource with a stack
  • Attach a resource to one of the stack’s instances.
  • Move a resource from one instance to another.
  • Detach a resource from an instance.
  • Deregister a resource.
  • An unregistered resource cannot be used though in AWS account till deleted

But, limitations are

  • cannot attach registered EBS volumes to Windows instances.
  • Resources page manages standard, PIOPS, Throughput Optimized HDD, Cold HDD, or General Purpose (SSD) EBS volumes, but not RAID arrays.
  • Amazon EBS volumes must be xfs formatted.
  • AWS OpsWorks Stacks does not support other file formats, like ext4.
  • Can’t attach EBS volume to running instance
  • Can’t detach EBS volume from running instance.
  • Can attach an Elastic IP address to and detach it from a running instance.
  • can operate on online or offline instances.

Registering Resources with a Stack

  • Following to be registered with a stack to attach them to instances
  • Amazon EBS volumes
  • Elastic IP addresses
  • If OpsWorks Stacks creates resources for a stack, they are automatically registered with that stack.
  • For using externally-created resources, explicitly register them. Note the following:
    • can register resource with one stack at a time only.
    • If deleting a stack, OpsWorks Stacks deregisters all resources.

Register Amazon EBS volume

  • Open stack and click Resources in the navigation pane.
  • Click Volumes to list available EBS volumes.
  • Click Show Unregistered Volumes to show EBS volumes in account that are in the stack’s region
  • The Status column indicates whether volumes available for use.
  • Volume Type indicates whether the volume is standard, gp2, PIOPS, st1, or sc1.
  • Select the appropriate volumes and click Register to Stack. The Resources page now lists the newly registered volumes.

Assign EBS volume to an instance

  • On Resources page, click assign to instance in the appropriate volume’s Instance column.
  • On volume’s details page, select the appropriate instance, specify the volume’s name and mount point, and click Save to attach the volume to the instance.

Unassign EBS volume

  • Instance should be in offline state.
  • On the Resources page, click Volumes and click volume name.
  • On the volume’s details page, click Unassign.

Deregister EBS volume

  • unassign  volume if attached
  • On Resources page, click volume name in Name column.
  • On volume’s details page, click Deregister.
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