Introduction

The JS7 - JITL SSHJob implements an SSH client (Secure Shell) and allows to execute shell code, scripts and programs on a remote host without a JS7 Agent being installed on that host. As a prerequisite the remote host has to operate an SSH server.

The SSHJob allows execution on Unix and Windows systems.

• The beauty of SSH is its simplicity. It allows public/private key authentication and is well suited to execute programs for specific accounts.
  • The JITL SSHJob allows shell scripts to add return values to orders.
• One of the restrictions of SSH connections is that there is limited control of child processes on the remote host. 
  • If a number of child processes are spawned by a program during an SSH session and that session is aborted then child processes will continue to run.
  • The SSHJob provides a method for monitoring SSH connections that allows both remote sessions and local task to be terminated.
  • The SSHJob provides a means to control the behavior with output to stderr and exit codes of shell commands.
• For Windows operating systems hardly any products with decent SSH server capabilities are available, therefore use of JS7 Agents for Windows is preferable.

Feature Summary

SSH Remote Host Connections

• The SSHJob connects to a remote host without the need to install a local SSH client.

• Supported operations on the remote host include
  • to execute commands (including commands that are specific for the operating system),
  • to execute scripts,
  • to transfer scripts to the remote host and to execute such scripts on the remote host,
  • to propagate environment variables to the remote host,
  • to add return values to orders for use with follow-on jobs in the workflow.

SSH Session Management

• Provides control over remote sessions.
• Rules the termination of remote child processes and parent processes with SIGTERM and SIGKILL.

Further Resources

• JS7 - JITL SSHJob