It is managed IP address (virtual IP address) and subnet mask which will be assigned on a network interface card resource.
A real IP address which is static must be set in the network interface card to add on a virtual IP address. This can be switchable node to node in case it reacts in the same manner as the node’s real IP address, and applications and other nodes can communicate with the node using the virtual IP address.
A virtual IP address cannot be used independently. This always depends on a network interface card resource, so this have a value which is name of the network interface card(NIC) resource in its ‘NICResName’ attribute. This value should be match to its depending NIC resource name to work properly.
If the NIC resource has not been configured or not in the ONLINE state, it cannot be used.
Table of Contents
Adding
There are two way to add a resource which one is select this from a group name and another is select this from a resource type.
Adding in Group
- When add a resource from a group name, select a group → right click → 'Add Resource'. Or select Edit(E) from the main menu bar → select 'Add Resource'. Or select 'Add Resource' icon from the tool bar.
[Figure] Add resource wizard view - Select 'IP' from Resource Type lists and click 'Next' button. When add a resource from the IP resource type name, this step will be skipped.
[Figure] Select Resource Wizard View - Next steps are same as adding in resource type.
Adding in Resource Type
- ResourceType → Right Click → Click Add Resource
[Figure] Adding IP resource in a resource type - Enter resource name.
If you skip this, name will be given same value with virtual IP address.
[Figure] Adding IP Resource - Enter virtual IP address which should have same subnet mask with real IP address of both nodes.
Select NIC Resource which IP Address resource depends on.
[Figure] Adding values for IP resource - Click 'Finish' button and IP resource is added.
[Figure] Adding IP Resource is Completed
Deleting
Select Resource type → right click → delete resource.
- Select delete menu and the resource will be deleted.
[Figure] Delete IP address resource view
Status
The following table explains the status switching of the MCCS resource caused by a user's command and the status.
The command assumes that it is generated by a user.
Network address agent: Manages a virtual IP address.
| Status | Agent command | Description | Note |
|---|---|---|---|
Online In this status, a virtual IP address is assigned to a network device. | Offline | An IP address assigned to the designated network card is removed. | |
| Monitoring | It tests if a virtual IP address exists on a network card. | ||
Offline In this status, a virtual IP address is not assigned to a network device. | Online | It first checks if the designated network card is online or not. | |
| Monitoring | It tests if a virtual IP address exists on a network card. | ||
Trouble 1. IP address assigned to a network device is removed by the external command. Specific causes can be found in the error log. | Online | Refer to the above online command. | |
| Offline | An IP address assigned to the designated network card is removed. |
Attribute
[Figure] IP Address Attribute
Attribute | Description | Type | Default | Edit | Note |
Address | Virtual IP address. | IP ADDRESS | O | ||
Netmask | Subnet mask of the virtual IP address. | IP ADDRESS | O | ||
NICResName | Name of the network interface card resource that has defined the network device of the virtual IP address being allocated. | NAME | O |
Attribute value of ArgList arguments are the values that are added resources and the value can be changed or viewed through ’Specified Attribute’ list on the detailed information panel.
For more information about resource type attribute, please refer to “6. Resource Type” for this document.