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Administering an Oracle® Solaris Cluster 4.4 Configuration

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Updated: March 2019
 
 

How to Bring a Node Out of Maintenance State

Use the following procedure to bring a global-cluster node back online and reset the quorum vote count to the default. For cluster nodes, the default quorum count is one. For quorum devices, the default quorum count is N-1, where N is the number of nodes with nonzero vote counts that have ports to the quorum device.

When a node has been put in maintenance state, the node's quorum vote count is decremented by one. All quorum devices that are configured with ports to the node will also have their quorum vote counts decremented. When the quorum vote count is reset and a node removed from maintenance state, both the node's quorum vote count and the quorum device vote count are incremented by one.

Run this procedure any time a global-cluster node has been put in maintenance state and you are removing it from maintenance state.


Caution

Caution  -  If you do not specify either the globaldev or node options, the quorum count is reset for the entire cluster.


The phys-schost# prompt reflects a global-cluster prompt. Perform this procedure on a global cluster.

This procedure provides the long forms of the Oracle Solaris Cluster commands. Most commands also have short forms. Except for the long and short forms of the command names, the commands are identical.

  1. Assume the root role or a role that provides solaris.cluster.modify authorization on any node of the global cluster other than the one in maintenance state.
  2. Depending on the number of nodes that you have in your global cluster configuration, perform one of the following steps:
    • If you have two nodes in your cluster configuration, go to Step 4.

    • If you have more than two nodes in your cluster configuration, go to Step 3.

  3. If the node that you are removing from maintenance state will have quorum devices, reset the cluster quorum count from a node other than the one in maintenance state.

    You must reset the quorum count from a node other than the node in maintenance state before rebooting the node, or the node might hang while waiting for quorum.

    phys-schost# clquorum reset
  4. Boot the node that you are removing from maintenance state.
  5. Verify the quorum vote count.
    phys-schost# clquorum status

    The node that you removed from maintenance state should have a status of online and show the appropriate vote count for Present and Possible quorum votes.

Example 77  Removing a Cluster Node From Maintenance State and Resetting the Quorum Vote Count

The following example resets the quorum count for a cluster node and its quorum devices to their defaults and verifies the result. The cluster status output shows the Node votes for phys-schost-1 to be 1 and the status to be online. The Quorum Summary should also show an increase in vote counts.

phys-schost-2# clquorum reset
  • On SPARC based systems, run the following command.

    ok boot
  • On x86 based systems, run the following commands.

    When the GRUB menu is displayed, select the appropriate Oracle Solaris entry and press Enter.

phys-schost-1# clquorum status

--- Quorum Votes Summary ---

Needed   Present   Possible
------   -------   --------
4        6         6


--- Quorum Votes by Node ---

Node Name        Present       Possible      Status
---------        -------       --------      ------
phys-schost-1    1             1             Online
phys-schost-2    1             1             Online
phys-schost-3    1             1             Online


--- Quorum Votes by Device ---

Device Name           Present      Possible      Status
-----------           -------      --------      ------
d3                     1            1             Online
d17                    1            1             Online
d31                    1            1             Online
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