Page History

...

• First Installation: no Agent is installed and running on the server.
• Update Installation: an Agent is installed and optionally up and running.

Structure

The JobScheduler Agents will be installed from a JobScheduler Master . There is a JobScheduler job responsible for creating the Orders, which are that connects to the Agent Servers to execute the corresponding Agent installations. The structure is formed by a JobScheduler job AgentBatchInstaller and a JobScheduler job chain universal_agent_installer. The job AgentBatchInstaller is responsible for creating the JobScheduler orders for the job chain. These orders are named <host>:<port> meaning the port and the host where an Agent will be installed. The job chain have four nodes and the sequence look like this:

The job chain for update/installation of an Agent uses the nodes:

• CheckPreRequisiteSync: To wait until all prerequisites are checked and all instances have been shut down.
  • Checking for the correct Java version
  • Checking whether JobScheduler Universal Agent already has been installed. 
    
    • If so
      • shutting down a possibly running instance
      • remove the installation
  Sync: To wait until all prerequisites are checked and all instances have been shut down.

• TransferInstallationSetup: To transfer the installer files to the host
  • Before the transfer starts, the preprocessor will create the instance start script for the Agent instance from the templatetemplate jobscheduler_agent_instance_script.txt

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

  • With this regular expression, the following files will be transfered:
    
    • the JobScheduler Universal Agent installer files: jobscheduler_unix_universal_agent.1.11.0-SNAPSHOT.tar.gz
    • the instance start script: jobscheduler_agent_<port>.sh
    • the installation script: jobscheduler_universal_agent_install.sh
• PerformInstall: To start the installation using SSH.
  • The step before transfered installation script will be executed
  • The installation script will install and start the JobScheduler Universal Agent
  • Finally the postprocessing commands will be executed
    • The postprocessing commands are stored with the element <installation><postprocessing><command>
    • Three commands will be executed 
      
      • if you have more than three commands, please add the call in the job PerformInstall
    • The default commands will setup the autostart for JobScheduler Universal Agent on a Linux server (Ubuntu distribution)
      
      • echo ${ssh.sudo_password} | sudo -S cp ${install_path}/bin/jobscheduler_agent.sh /etc/init.d/jobscheduler
      • echo ${ssh.sudo_password} | sudo -S update-rc.d jobscheduler defaults

Download

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

...