Administering the RPC server for Java using the Command Central GUI

Learn how to administer the EntireX RPC Server for Java, using the Command Central graphical user interface.

See also Administering the RPC server for Java using the Command Central command line.

Logging in to Command Central

To login to Command Central:
  1. Open an Internet browser and specify the URL of the Command Central Server as: http://<Command_Central_host>:<Command_Central_port>.

    This takes you to the Command Central Login page.

    On Windows you can also get to the Login page from the Command Central Start Menu entry.

  2. Provide your user credentials in the Login page and click Log In. This takes you to the page Home > Instances:
    Command Central Instances

Creating an RPC server instance

To create an RPC server for Java instance:
  1. In the Command Central home page, click the Installations tab.
  2. Click on the desired installation, for example Local, where you want to add an RPC Server for Java instance.
    Local
  3. Click the Instances tab.
    Instances tab
  4. Click the Add button in the upper right corner above the list and choose EntireX RPC Server for Java.
  5. In the Create Instance wizard, fill in the fields in the main screen and in the Server, Broker and Classpath tabs.
    Table 1. Main screen
    Parameter Description
    Instance name Name of the runtime component, for example myBroker.
    Register Windows Service for automatic startup Register Windows Service for automatic startup. Default is not checked. If this parameter is checked, the RPC server can be controlled by the Windows Service Control Manager.
    Table 2. Server tab
    Parameter Description
    RPC Server address The case-sensitive RPC server address has the format: CLASS/SERVER/SERVICE.
    Administration port The administration port in range from 1025 to 65535.
    Table 3. Broker tab
    Parameter Description
    Connection
    Transport Transport over TCP or SSL. Default is TCP.
    Broker host EntireX Broker host name or IP address. See Using the Broker ID in applications.
    Broker port Port number in range from 1025 to 65535.
    Credentials
    User The user ID for secured access to the broker.
    Password The password for secured access to the broker.

    You can modify the classpath from which the RPC Server for Java loads the server implementations.

    Table 4. Classpath tab
    Parameter Description
    Classpath Specify the full path to your Java server programs.

    Note: Restart the instance for the changes to take effect.
  6. Press Next to get to the Summary page to verify your input.
  7. Press Finish.
    Finish

    The new instance myRpcServer appears in the list.

Configuring an RPC server instance

To configure an RPC server for Java instance:
  1. In the Command Central home page, click the Instances tab.
  2. Click on the link associated with this instance to select the RPC server instance you want to configure.
  3. Click the Configuration tab. EntireX supports the following configuration types, which are presented in a drop-down box when you click the down arrow below the Configuration tab label:
    Note: All configuration changes require a restart of the instance to take effect.
  4. Click Edit to modify the parameters on your selected configuration type.
  5. Click Test to check the correctness of your input or Apply to save your changes.
The configuration options are described in the following sections:

Broker

Table 5. Broker
Parameter Description
Connection
Transport Transport over TCP or SSL. Default is TCP.
Broker host EntireX Broker host name or IP address. See Using the Broker ID in applications.
Broker port Port number in range from 1025 to 65535.
Encoding Encoding used for the communication between the RPC server and EntireX Broker.
SSL trust store Specifies the location of the SSL trust store.
SSL trust password The password for the SSL trust store.
SSL verify server The RPC server as SSL client checks the identity of the broker as SSL server.
FIPS-140 mode Enable FIPS-140 compliant SSL communication. Default is no.
Credentials
User The user ID for secured access to the broker.
Password The password for secured access to the broker.

Classpath

You can specify one or more full paths to your Java server programs.

Table 6. Parameter for Classpath
Parameter Description
Java Archive or Directory Specify the full path to your Java server programs.

Note: Restart the instance for the changes to take effect.

Configuration file

You can view or edit the configuration file of the RPC Server for Java.

Monitoring KPIs

Here you can modify margins of monitored key performance indicators (KPIs) available for the RPC Server for Java: Active Workers and Busy Workers.

Key performance indicators (KPIs) enable you to monitor the health of your RPC Server for Java. The following KPIs help you administer, troubleshoot, and resolve performance issues:

Table 7. Monitoring KPIs
KPI Setting
Absolute number of Active Workers entirex.generic.kpi.1.max=20
Critical alert relative to maximum entirex.generic.kpi.1.critical=0.95
Marginal alert relative to maximum entirex.generic.kpi.1.marginal=0.80
Absolute number of Busy Workers entirex.generic.kpi.2.max=20
Critical alert relative to maximum entirex.generic.kpi.2.critical=0.95
Marginal alert relative to maximum entirex.generic.kpi.2.marginal=0.80
Note: Do not change the other properties.

Package mapping

Here you can modify how the RPC Server for Java handles server programs with package names. The package name can be configured for each IDL library (see library-definition under IDL Grammar in the IDL Editor documentation).

Parameter Description
IDL Library IDL library name for server implementation if RPC Server for Java handles these server programs with package names.
Java Package Java package name for server implementation if RPC Server for Java handles these server programs with package names.

Server

Here you can specify the RPC Server settings.

Table 8. Server parameters
Parameter Description
RPC Server
RPC Server address The case-sensitive RPC server address has the format: CLASS/SERVER/SERVICE.
Administration port The administration port in range from 1025 to 65535.
Reconnection attempts Required. Number of reconnection attempts to the broker. When the number of attempts is reached and a connection to the broker is not possible, the RPC Server for Java stops.
Worker Scalability
Worker model You can either have a fixed or dynamic number of workers. Default is dynamic (true). For more information see Worker models.
Fixed number Required. Fixed number of workers. Must be a number in range from 1 to 255.
Minimum number Required. Minimum number of workers. Must be a number in range from 1 to 255.
Maximum number Required. Maximum number of workers. Must be a number in range from 1 to 255.

Trace Level

You can set the trace level of the RPC Server for Java.

Table 9. Trace level parameters
Parameter Value Description
Trace level 0-3 One of the following levels:0 - None - No trace output (default).1 - Standard - Minimal trace output.2 - Advanced - Detailed trace output.3 - Support - Support diagnostic. Use only when requested by IBM Support.

Viewing the runtime status

To view the runtime status of the RPC server instance:

  1. In the Command Central Home page, click the Instances tab and select the RPC Server for Java instance for which you want to see the runtime status (same as Step 1 under Configuring a Broker instance).

    Instances dashboard

    The visual key performance indicators (KPIs) and alerts enable you to monitor the RPC Server for Java's health.

    Table 10. Key Performance Indicators (KPIs)
    KPI Description
    Active Workers Number of active workers.
    Busy Workers Number of busy workers.

Starting an RPC server instance

To start an RPC server for Java instance from the Instances tab:
  1. In the Command Central home page, click the Instances tab.
  2. Select the status, and from the context menu choose Start.
To start an RPC Server for Java instance from its Overview tab:
  1. In the Command Central home page, click the Instances tab and select the RPC Server for Java instance you want to start (same as Step 1 under Configuring a Broker instance).
  2. Select the status, and from the context menu choose Start.

Stopping an RPC server instance

To stop an RPC server for Java instance from the Instances tab:
  1. In the Command Central home page, click the Instances tab.
  2. Select the status, and from the context menu choose Stop.
To stop an RPC server for Java instance from its Overview tab:
  1. In the Command Central home page, click the Instances tab and select the RPC Server for Java instance you want to stop (same as Step 1 under Configuring a Broker instance).
  2. Select the status, and from the context menu choose Stop.

Inspecting the log files

To inspect the log files of an RPC server for Java instance:
  1. In the Command Central home page, click the Instances tab, then click the link associated with the RPC Server for Java instance for which you want to inspect the log files (same as Step 1 under Configuring a Broker instance).
  2. Click the Logs tab:
  3. In the Alias column, click the link of the log file you want to inspect, for example server.log:

Changing the trace level temporarily

To temporarily change the trace level of an RPC server for Java instance:
  1. In the Command Central home page, click the Instances tab then click the link associated with the RPC Server for Java instance for which you want change the trace level temporarily (same as Step 1 under Configuring a Broker instance).
  2. In the Administration tab, select the trace level and press Update.
    Update
Note: If you want to set the trace level permanently, see Trace level under Configuring an RPC Server Instance.

Deleting an RPC server instance

To delete an RPC server for Java instance:
  1. In the list of EntireX RPC Server for Java instances for your selected installation (for example Local), select the instance you want to delete and click the minus button in the upper right corner above the list.
  2. Click OK to confirm the uninstall of this RPC Server for Java instance.
  3. In the next window, click Finish. The selected instance is removed from the list.