7-2 IP Address
- 정은진
- 헌규임
- JuneL (Unlicensed)
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
Add the network address resource to a group.
The network card resource should be created before adding the network address resource.
- select a group → right click → 'Add Resource'.
- Select 'IP' from Resource Type lists and click 'Next' button.
- 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] Attributes Value Entered and Finish Button Active - Click the 'Finish' button to add the network address resource.
You can immediately check the result in the management web console.
Deleting
Select the resource. -> Right click with the mouse. -> Delete the resource.
The deleted resource will immediately disappear from the management web console.
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
This is the unique attribute of the network address resource.
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.