Monitoring your Environment

Scenario: "I want to monitor my environment and check that all components (broker, RPC servers) are up and running."

EntireX offers a script-based solution to check if all brokers and services of a defined environment are active.

Defining your Environment

Start of instruction setTo define the environment to be monitored

  • Select option 7 from the EntireX Command-line Script Menu, "Define your Environment".

    Or:
    Enter command edit_user_specific_environment_definition.bat to specify the environment to be monitored (defined by broker and list of services).

    This opens a text editor (for example Notepad) with a sample definition of an environment that you can customize. You can enter values for the following parameters:

    Parameter Value Description Note
    ENVIRONMENT <Env_Name> Logical name of the environment  
    LOGEXIT <Exit_Name> User exit called after each component check. Optional. See Logging Exit.
    ERROREXIT <Exit_Name> Batch file to be called if a component of the environment is not active. See Error Handling.
    BROKER <Broker_Name> <Broker_ID> Logical name and ID of broker used for the etbinfo calls.  
    <Broker_Name> <Broker_ID> <UserId> <Password> Additional user ID and password if the broker is running with EntireX Security.  
    SERVICE <Service_Name> <Class> <Server> <Service> Logical service name, class, server, service to be monitored. Checks if the specified service is registered at the broker.
    RPCSERVICE <RPC_Service_Name> <Class> <Server> <Service> Logical RPC service name, class, server, service to be monitored. Valid only for RPC servers and issues an RPC ping command to the specified service.

    Notes:

    1. The file may contain a list of environments.
    2. Each environment can consist of list of brokers, and for each broker a list of services can be defined.
    3. Blanks in the logical names are not supported.

The file you define here is used for the following scripts:

monitor_environment.bat See Monitoring your Environment.
process_environment_file.bat This batch file processes the environment definition file and calls check_environment.bat. This batch file is called by monitor_environment.bat.
check_environment.bat This batch file is called by process_environment_file.bat with the parameters of one line of the environment definition file. The batch file checks the parameters and either:

  • sets environment variables for subsequent calls

  • calls etbinfo to check if the broker/service is running

Examples

This environment has one broker:

ENVIRONMENT myProductionServers
ERROREXIT handle_error.bat
BROKER myProductionBroker localhost:1971
RPCSERVICE myRPCServer RPC SRV1 CALLNAT

This environment has multiple brokers:

ENVIRONMENT myMFServers
ERROREXIT handle_error.bat
BROKER myMFBroker ibm2:3930
SERVICE myACIServer ACLASS ASERVER ASERVICE
BROKER myMFBroker2 ibm2:3940
SERVICE myACIServer2 ACLASS ASERVER ASERVICE
RPCSERVICE myRPCServer2 RPC SRV2 CALLNAT

Monitoring your Environment

Start of instruction setTo monitor your environment

  • Select option 8 from the EntireX Command-line Script Menu "Monitor your Environment".

    Or:
    Enter a command as shown below: 

    monitor_environment.bat
    monitor_environment.bat <Time>
    monitor_environment.bat <Time> <EnvDefFile>
    where <Time> is the interval between checks in seconds (default 60)
      <EnvDefFile> is the file containing the definition of the environment (default MyEnvironment.cfg).

    Example:

    monitor_environment.bat 30 myEnvironmentDefinitionFile.txt

The following checks are performed:

  • That the service is registered at the broker.

  • That the server can be called. This is done with an RPC ping command.

A user exit specified in the environment definition file (see Defining your Environment) is called if a specified broker or service is not active. See Error Handling below.

Error Handling

A sample batch file handle_error.bat is provided to handle the situation where a component of a defined environment (see Defining your Environment) is not available. The environment definition file specifies the name of the error exit to be called. You can use this file as a template for your own exit to customize your error handling. We strongly recommend you rename this file. 

@echo off
@rem the following environment variables are set when the bat file is called
@rem environment variable %OBJECT% Error Object. possible values: BROKER or SERVICE
@rem envirnoment variable ETBINFOERROR Error Number returned by ETBINO
@rem envrionment variable ETBINFOERRORTEXT Error text 
@rem the following environment variables are set for OBJECT SERVICE and OBJECT BROKER
@rem environment variable %ENV% logical name of environment
@rem environment variable %BNAME% logical name of Broker
@rem environment variable %BID% Broker ID
@rem the following environment variables are only set for OBJECT SERVICE
@rem environment variable %SNAME% logical service name
@rem environment variable %CLASS% Class
@rem environment variable %SERVER% Server
@rem environment variable %SERVICE% Service

echo Example User exit to handle errors: handle_error.bat
echo Error during check of Environment %ENV% 
echo Broker %BNAME% (%BID%) 

@rem check error object
@rem %OBJECT% == BROKER - Error Situation: defined Broker cannot be called
if %OBJECT%.==BROKER. goto Broker
@rem %OBJECT% == SERVICE - Error Situation: defined Service not registered
if %OBJECT%.==SERVICE. goto Service
echo Unknown Error Object %OBJECT%
goto end

:Broker
@rem the Broker (logical Name BNAME, Broker ID BID) is not running. 
@rem add your code here to handle this situation

echo FATAL ERROR 
echo Environment %ENV%
echo Broker %BNAME% ( %BID%) not active
goto end

:Service
@rem the Service (logical Name SNAME ,  CLASS /  SERVER / SERVICE ) on
@rem Broker (logical Name BNAME, Broker ID BID) is not running. 
@rem add your code here to handle this situation

echo FATAL ERROR 
echo Environment %ENV%
echo Service %SNAME% (%CLASS% / %SERVER% / %SERVICE% ) at Broker %BNAME% ( %BID%)  not registered
goto end


:end
@rem remove the pause so that monitoring of the environment can continue without a break
pause

Logging Exit

You optionally specify a logging exit when you are monitoring your environment. The exit is called every time a component in the environment is checked (BROKER, RPCSERVICE, SERVICE). With the exit you can, for example, write a CSV file with the result of the checks. A sample script log_environment.bat is provided, which you can use as a template. We strongly recommend you rename this file.

The exit contains the following environment variables:

@rem the following environment variables are set when the bat file is called
@rem environment variable %OBJECT% Object. Possible values: BROKER or SERVICE 
@rem environment variable %CHECK_ERROR% Error Flag. Possible values: TRUE or FALSE
@rem in case of error the following envrionment variable provide details about the Error.
@rem envirnoment variable ETBINFOERROR Error Number returned by ETBINO
@rem envrionment variable ETBINFOERRORTEXT Error text 
@rem the following environment variables are set for OBJECT SERVICE and OBJECT BROKER
@rem environment variable %ENV% logical name of environment
@rem environment variable %BNAME% logical name of Broker
@rem environment variable %BID% Broker ID
@rem the following environment variables are only set for OBJECT SERVICE
@rem environment variable %SNAME% logical service name
@rem environment variable %CLASS% Class
@rem environment variable %SERVER% Server
@rem environment variable %SERVICE% Service