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Cluster Configuration
Two Node Cluster
There are 3 types of a group which is configured with two nodes as follows.
- support failover group
- support parallel group
- support single node group
For more details about each item above, it will be provided in sequence from the next section.
Support Failover Group
A failover group is a group that contains the resource that can be run at a single node at a time.
A failover group switches to the standby node when the managed resource is failed. The resource in this group only runs at the available nodes.
For instance, a virtual IP address cannot be used at the active node and the standby node at the same time. In addition, if a virtual IP address causes troubles, it will failover the group to the standby node.
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A single node group is a group of resources that can be run at a single node.
A single node group does not failover. When the included resource experiences troubles, a single node group will try to be online as many times as designated.
Single Node Cluster
This indicates a cluster configured with a resource available to be ran on one single node. single node cluster does not failover. For this type of a cluster, single node group is supported only.
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The below table explains some attributes.
[Figure] Cluster Attribute View
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Attribute | Description | Type | Defaults | Edit | Note |
ClusterName | It is the name of the cluster. | NAME |
| X | |
GroupLimit | It is a maximum number of groups that can be added. | INTEGER | 32ea | X | |
HBInterval | It is an interval for checking whether to receive heartbeat signal, Heartbeat signal is transferred at an interval 1/10 of this time. | INTEGER | 2000ms | O | |
HBPort | It is the heartbeat service port number. | PORT | 14321 | X | |
HBTimeout | It is ICMP test timeout for heartbeat network. If heartbeat data is disconnected, Timeout will take place, and the ICMP test will be conducted. | INTEGER | 3sec | O | |
IsolationTestTmeout | It sets up the ICMP test timeout during the node isolation (SPLIT) test. For the test IP address, please refer to 'Isolation TestAddress' from Node Attribute of this chapter. | INTEGER | 3sec | O | |
LogBackupCount | It is the limit of backuped log file count. | INTEGER | 3ea | O | |
LogFileSize | It is the size of the log file. Minimum size is 64KB. while the maximum size is 10,000MB. If the size of the log file is greater than this, it will be backed up to mccs.log.1 | INTEGER | 1000Kb | O | |
LogLevel | It is the standard level of the log recorded in the log file. The log levels include DEBUG, INFO, WARN, ERROR and FATAL, and only those logs above this level will be recorded in the file. | LOG LEVEL | Info | O | |
NodeFaultDetectionTime | It is the time for detecting node failures. | INTEGER | 30sec | O | |
| PingRetryTime | Time to determine ping test failure. | INTEGER | 0sec | O | |
ResourceLimit | It is a maximum number of resources that can be added. | INTEGER | 500ea | X | |
RMIConnectionTimeout | It is RMI connection timeout. | INTEGER | 2sec | O | |
| RuntimeExcuteTimeout | It limits running time, when executing OS commands, to a setting value. | INTEGER | 10초10sec | O | |
| SingleNodeCluster | It is a cluster consist of a node. | BOOLEAN | false | X | |
SysLogLevel | It indicated the log level to be recorded in the Windows system log. Only those logs above this level will be recorded in the system log. | LOG LEVEL | Error | O |
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