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Shut down the controllers - AFF A220

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Shut down or take over the impaired controller using the appropriate procedure for your configuration.

Option 1: Most configurations

Shut down the controllers so you can perform maintenance on the chassis.

This procedure is for systems with two node configurations. If you have a system with more than two nodes, see How to perform a graceful shutdown and power up of one HA pair in a four node cluster.

Before you begin

  • Stop all clients/host from accessing data on the NetApp system.

  • Suspend external backup jobs.

  • Make sure you have the necessary permissions and credentials:

    • Local administrator credentials for ONTAP.

    • NetApp onboard key management (OKM) cluster-wide passphrase if using storage encryption or NVE/NAE.

    • BMC accessability for each controller.

  • Make sure you have the necessary tools and equipment for the replacement.

  • As a best practice before shutdown, you should:

Steps

  1. Log into the cluster through SSH or log in from any node in the cluster using a local console cable and a laptop/console.

  2. Turn off AutoSupport and indicate how long you expect the system to be offline:

    system node autosupport invoke -node * -type all -message "MAINT=8h Power Maintenance"

  3. Identify the SP/BMC address of all nodes:

    system service-processor show -node * -fields address

  4. Exit the cluster shell: exit

  5. Log into SP/BMC over SSH using the IP address of any of the nodes listed in the output from the previous step.

    If you are using a console/laptop, log into the controller using the same cluster administrator credentials.

    Note Open an SSH session to every SP/BMC connection so that you can monitor progress.

  6. Halt the two nodes located in the impaired chassis:

    system node halt -node <node>,<node2> -skip-lif-migration-before-shutdown true -ignore-quorum-warnings true -inhibit-takeover true

    Note For clusters using SnapMirror synchronous operating in StrictSync mode: system node halt -node <node>,<node2> -skip-lif-migration-before-shutdown true -ignore-quorum-warnings true -inhibit-takeover true -ignore-strict-sync-warnings true

  7. Enter y for each controller in the cluster when you see Warning: Are you sure you want to halt node "cluster <node-name> number"? {y|n}:

  8. Wait for each controller to halt and display the LOADER prompt.

Option 2: Controller is in a MetroCluster configuration

Note Do not use this procedure if your system is in a two-node MetroCluster configuration.

To shut down the impaired controller, you must determine the status of the controller and, if necessary, take over the controller so that the healthy controller continues to serve data from the impaired controller storage.

  • If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a healthy controller shows false for eligibility and health, you must correct the issue before shutting down the impaired controller; see Synchronize a node with the cluster.

  • If you have a MetroCluster configuration, you must have confirmed that the MetroCluster Configuration State is configured and that the nodes are in an enabled and normal state (metrocluster node show).

Steps

  1. If AutoSupport is enabled, suppress automatic case creation by invoking an AutoSupport message: system node autosupport invoke -node * -type all -message MAINT=number_of_hours_downh

    The following AutoSupport message suppresses automatic case creation for two hours: cluster1:*> system node autosupport invoke -node * -type all -message MAINT=2h

  2. Disable automatic giveback from the console of the healthy controller: storage failover modify –node local -auto-giveback false

  3. Take the impaired controller to the LOADER prompt:

    If the impaired controller is displaying…​ Then…​

    The LOADER prompt

    Go to the next step.

    Waiting for giveback…​

    Press Ctrl-C, and then respond y when prompted.

    System prompt or password prompt (enter system password)

    Take over or halt the impaired controller from the healthy controller: storage failover takeover -ofnode impaired_node_name

    When the impaired controller shows Waiting for giveback…​, press Ctrl-C, and then respond y.