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Cluster: Administration: Servers
Column Display Configuration Options
This page lists the server instances that are assigned to this cluster. You can use this page to add or remove server instances from the cluster.
Configuration Options
Name Description Server Template The template used to configure this server.
MBean Attribute:
ServerMBean.ServerTemplate
Changes take effect after you redeploy the module or restart the server.
Current Cluster Size Get the current size of the dynamic cluster (the number of dynamic server instances allowed to be created). The specified number of server instances are dynamically added to the configuration at runtime and associated ServerLifeCycleRuntimeMBeans are created.
MBean Attribute:
DynamicServersMBean.DynamicClusterSize
Minimum value:
0
Maximum value:
800
Maximum Cluster Size Get the upper bound on the DynamicClusterSize that the Elasticity Framework is allowed to assign to DynamicClusterSize.
MBean Attribute:
DynamicServersMBean.MaxDynamicClusterSize
Minimum value:
0
Maximum value:
800
Minimum Cluster Size Get the minimum number of running server instances that the Elasticity Framework will attempt to keep in the dynamic cluster.
MBean Attribute:
DynamicServersMBean.MinDynamicClusterSize
Minimum value:
0
Maximum value:
800
Server Name Prefix The server name prefix is used to specify the naming convention when creating server names. When the server name prefix is defined, server names are calculated with the specified prefix followed by the index starting with 1.
MBean Attribute:
DynamicServersMBean.ServerNamePrefix
Changes take effect after you redeploy the module or restart the server.
Enable Calculated Listen Ports Specifies whether listen ports are calculated.
MBean Attribute:
DynamicServersMBean.CalculatedListenPorts
Changes take effect after you redeploy the module or restart the server.
Enable Calculated Machine Associations The CalculatedMachineNames attribute controls how server instances in a dynamic cluster are assigned to a machine. If the attribute is not set, then the dynamic servers will not be assigned to a machine. If the attribute is set, then the MachineNameMatchExpression attribute is used to select the set of machines to use for the dynamic servers.
MBean Attribute:
DynamicServersMBean.CalculatedMachineNames
Changes take effect after you redeploy the module or restart the server.
Machine Name Match Expression The expression is used when determining machines to use for server assignments. If null, then all machines in the domain are used. If a expression is provided, then only the machines in the domain that match the expression will be used when assigning machine names to dynamic servers. The expression is a comma separated set of values that specify the machines to match. Each value will either match a machine name exactly or if specified with a trailing '*' suffix, the value will match multiple machine names.
MBean Attribute:
DynamicServersMBean.MachineNameMatchExpression
Changes take effect after you redeploy the module or restart the server.
Column Display
Name Description Name The alphanumeric name for this server instance.
MBean Attribute:
ServerMBean.Name
Changes take effect after you redeploy the module or restart the server.
Type The type of server (dynamic or explicitly configured).
Machine The WebLogic Server host computer (machine) on which this server is meant to run.
If you want to use Node Manager to start this server, you must assign the server to a machine and you must configure the machine for Node Manager.
You cannot change this value if a server instance is already running.
MBean Attribute:
ServerMBean.Machine
Changes take effect after you redeploy the module or restart the server.
Listen Port The default TCP port that this server uses to listen for regular (non-SSL) incoming connections.
Administrators must have the right privileges before binding to a port or else this operation will not be successful and it will render the console un-reachable.
If this port is disabled, the SSL port must be enabled. Additional ports can be configured using network channels. The cluster (multicast) port is configured separately.
MBean Attribute:
ServerMBean.ListenPort
Minimum value:
1
Maximum value:
65535
Listen Address The IP address or DNS name this server uses to listen for incoming connections. For example, enter
12.34.5.67
ormymachine
, respectively.Note that the value you specify for the listen address is not the URL to the host machine and it does not include the communication protocol, listen port, or channel.
Servers can be reached through the following URL:
protocol://listen-address:listen-port
Any network channel that you configure for this server can override this listen address.
If a server's listen address is undefined, clients can reach the server through an IP address of the computer that hosts the server, a DNS name that resolves to the host, or the localhost string. The localhost string can be used only for requests from clients that are running on the same computer as the server.
If you want to limit the valid addresses for a server instance, specify one of the following:
IP address. If you provide an IP address, clients can specify either the IP address or a DNS name that maps to the IP address. Clients that specify an IP address and attempt to connect through an SSL port must disable hostname verification.
DNS name. If you provide a DNS name, clients can specify either the DNS name or the corresponding IP address.
Do not leave the listen address undefined on a computer that uses multiple IP address (a multihomed computer). On such a computer, the server will bind to all available IP addresses.
Note also that if you are using the demo certificates in a multi-server domain, Managed Server instances will fail to boot if you specify the fully-qualified DNS name. For information about this limitation and suggested workarounds, see "Limitation on CertGen Usage" in Administering Security for Oracle WebLogic Server.
MBean Attribute:
ServerMBean.ListenAddress
Changes take effect after you redeploy the module or restart the server.
Administration Port The secure administration port for the server. This port requires that you enable the domain's administration port and that SSL is configured and enabled.
By default, the server uses the administration port that is specified at the domain level. To override the domain-level administration port for the current server instance, set this server's administration port.
MBean Attribute:
ServerMBean.AdministrationPort
Minimum value:
0
Maximum value:
65535
Secure value:
7002
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