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• A JobScheduler Master is up and running.
• JobScheduler Agents have been already installed on an Agent server.
• An extra installation of an Agent will be carried out.
• The new Agent will be operated with same user and installation path.
• The listening port for the new Agent will be obviously a different one than the installed Agents .

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The JobScheduler Agents will be installed by a JobScheduler Master that:

• connects to the Servers that the Agents are to be installed on and
• executes the  required Agent installations.

The Batch Installer application has two main components - a JobScheduler AgentBatchInstaller job  and a JobScheduler universal_agent_installer job chain. In addition, two XML files batch_installer_config_file.xml and yade_agent_batch_installer_settings.xml are needed for the application. 

The AgentBatchInstaller job is responsible for creating the JobScheduler orders for the job chain. Each of these orders is named according to the pattern <host>:<port> to convey the host and port of the server where each Agent is to be installed. 

The universal_agent_installer job chain has four job nodes configured in series as follows:

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The individual nodes in the universal_agent_installer job chain have the following functions:

• CheckPreRequisite

  • Check for the correct Java version.
  • Check whether a JobScheduler Universal Agent has already been installed. If so:
    • • shut down the instance if it is running,
      • remove the installation.
• Sync: To wait until all prerequisites have been checked and any already installed Agent instances that are running have been shut down.

• TransferInstallationSetup: To transfer the installer files on the host
  • Before the transfer starts, the preprocessor will use the use the jobscheduler_agent_instance_script.txt template to create a start script for each Agent instance. 
  • The XML file yade_agent_batch_installer_settings.xml has to be configured and converted to .ini file before the transfer starts. See the YADE configuration file for the file transfer chapter below for instructions on how to configure the YADE configuration file and YADE Settings File for the File Transfer for instructions on how the .ini file should look like.

  • The files that will be transfered are specified with the element <globals><transfer><file_spec=".*\.(sh|gz)$">  

  • This regular expression is used to select the files to be transfered:
    
    • the JobScheduler Universal Agent installation files: jobscheduler_unix_universal_agent.tar.gz
      the jobscheduler_agent_<port>.sh start script for the instance
    • the installation script: jobscheduler_universal_agent_install.sh
• PerformInstall: The installation is started by SSH.
  • The installation script will install and start the JobScheduler Universal Agent
  • The PerformInstall job post-processing commands will then be executed:
    • These commands are specified using the <installation><postprocessing><command> element.
    • The default configuration for a Linux server will place the Agent start script under /etc/init.d and set up the autostart for JobScheduler Universal Agent (the following example is for a Ubuntu distribution):
      

      • echo ${ssh.sudo_password} | sudo -S cp ${install_path}/jobscheduler_agent/bin/jobscheduler_agent_${agent_options.scheduler_http_port}.sh /etc/init.d/jobscheduler_agent_${agent_options.scheduler_http_port}

      • echo ${ssh.sudo_password} | sudo -S update-rc.d jobscheduler_agent_${agent_options.scheduler_http_port} defaults

Download

The following steps have to be carried out. Files can be downloaded from http://www.sos-berlin.com/jobscheduler-downloads

1. Unix
   • Download the "JobScheduler Universal Agent" tarball for Unix.
   • Download the "JobScheduler Universal Agent Batch Installer" for Unix. The archive contains the following: 
     • a config/live/batch_installer_agent folder, with the jobs and job chains. Extract these files to the the live folder of the JobScheduler Master: SCHEDULER_DATA/config/live.
     • a config/batch_installer folder with the configuration files for the Batch Installer. Extract these files to the config directory of the JobScheduler Master: SCHEDULER_DATA/config.
     • Copy the JobScheduler Universal Agent installation file to the SCHEDULER_DATA/config/batch_installer folder.
2. Windows
   • Download the "JobScheduler Universal Agent" for Windows.
   • Download the "JobScheduler Universal Agent Batch Installer" for Windows. The archive contains the following
     • the config/live/batch_installer_agent folder with the jobs and job chains. Extract these files to the live folder of the JobScheduler Master SCHEDULER_DATA/config/live.
     • the config/batch_installer folder with the configuration files for the Batch Installer. Extract these files to the JobScheduler configuration directory SCHEDULER_DATA/config.
     • Copy the JobScheduler Universal Agent installation file to the folder SCHEDULER_DATA/config/batch_installer.

Configuration

XML files

Configuring XML files with a text editor is error-prone and we recommend that you download the XML Editor and use it to manage the configuration files required for the Batch Installer. The XML Editor automatically validates configuration files and therefore reduces the possibility of configuration errors. See the Using the XML Editor chapter below for more detailed information about the XML Editor.

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JobScheduler Jobs

Carry out the following once the job and job chain have been extracted to the live folder of your JobScheduler Master: 

• AgentBatchInstaller job: adjust the parameter values for the AgentBatchInstaller job in your JobScheduler Master.

  • Set the installation_definition_file job parameter to point to the Batch Installer configuration file.

Installation of the Agents

The Agents can be installed after the XML configuration files and JobScheduler jobs have been configured. Start a task for the AgentBatchInstaller job as follows:

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• on this server.

Installation and Configuration Steps

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