5-2 Add and Delete Group

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Last updated: 2018/02/09 by 정은진
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You can add a group by using group wizard of MCCS console. And multiple group can be added in a cluster.

Table of Contents



When click the "ESC" key while adding a group, this process is cancelled.
Therefore, please note not to press ESC key during this process.

Adding Resource Group

  1. To add a group, select 'group name → right click → "Add Group" from configuration tree.
    Or select "Edit(E)" → "Add Group" from main menu.

    [Figure] Adding a Group 


  2. If you select "Add Group", you will see the initial group wizard.

    In the wizard, enter a group name and select the nodes from "Available Nodes" list and move to "Target target" Nodes list by clicking allow.

    If you select only one node from "Available nodes" list, then single node group will be created.
    If you add this, a group is not able to perform failover in case of failure.

    (If you have selected a single node cluster in the installation step, only one node will be displayed in the "Available nodes" list.)


    [Figure] Operation Target Node Selection

     

  3. Click the "Additional Settings" button to choose group type as failover or parallel. This option will be disabled for single node group.

    [Figure] Additional Settings View

    Failover group failover from active to standby node when failure occurs. 
    Parallel group is configured with the resources that can be executed on more than 2 nodes at the same time.
    Parallel group does not support failover, but restart the service when it is failed in local node.

     

  4. Designate a group policy and configure an application.
    For more on how to add each resource, refer to the below link.
    Refer to the descriptions of adding PPAS in "7.12 PPAS". 
    Refer to the descriptions of adding Oracle Database in "7.8 Oracle Database".
    Refer to the descriptions of adding Oracle Listener in "7.9 Oracle Listener".
    Refer to the descriptions of adding Applications in "7.4. Applications".
    Refer to the descriptions of adding Windows service  in "7.7 Service".
    Refer to the descriptions of adding Process in "7.3 Process".

    If there is something wrong with the added resource, you can press the "X" mark to delete it.
    You can change the online/offline order of added resources by pressing the arrow icon.

     
    [Figure] Application Configuration


  5. Configure the network related resource.
    For more on how to add each resource, refer to the below link. 
    Refer to the descriptions of adding a NIC in “7.1 Network Interface Card".
    Refer to the descriptions of adding a IP in "7.2 IP Address".

    Before add an IP resource, you must add a NIC resource in advance.

     
    [Figure] Network Configuration


  6. Configure the disk related resource.

    For more on how to add each resource, refer to the below link.

    Refer to the descriptions of adding Shared Disk in "7.5 Shared Disk".

    Refer to the descriptions of adding Mirror Disk in "7.6 Mirror Disk".

    Refer to the descriptions of adding Shared Disk DR in "7.10 Shared Disk DR".

    Refer to the descriptions of adding Mirror Disk DR in "7.11 Mirror Disk DR".


    [Figure] Disk Configuration  

  7. Once you have added all the resources using adding group wizard, it will suggest a dependency among resources by MCCS automatically.
    If you want to edit the dependency, select the "Palette" in the right tab and change it. 

    [Figure] Recommended Dependency Modified

  8. After configure the dependency, check the summary of the group and resources information and press the "Finish" button to add a group.

    [Figure] Group Detailed Information View

Deleting

To delete a group, first make sure that there are existing online resources in a group.
If there is an existing resource online, terminate or delete it.

  1. To delete group, select Select "Group" -> Right Click -> "Delete Group". 
    If one or more than one of the resources is online state, a message shown below will appear.

  2. If one or more than one of the resources is online state, a message shown below will be appeared.
    Offline the group first before deleting it. 

    [Figure] Warning Message of Deleting Group


  3. If the mirror disk is included in the group, a message asking whether you want to delete replication configuration. 

    If you click the "OK" button, mirror set between source and target will also deleted. But when you click the "Cancel" button, mirror set will be remained and only mirror disk resource will be only deleted. 


    [Figure] Deleting Mirror Disk View