Selecting a UNIX shell to execute jobs on the UC4 Executor/Agents

Products

• CA Automic Workload Automation - Automation Engine

Issue/Introduction

Selecting a UNIX shell to execute jobs on the UC4 Executor/Agents

Environment

Release: AOATAM99000-8.0-Automic-One Automation Tools-Application Manager
Component:

Resolution

Detailed Description and Symptoms

The Agent/Executor does not go through the 'login-shell' process. Generally no User environment is loaded.

The Agent/Executor does not do a 'su'. A child-process (execle) is generated. This child-process runs with the user specified in the login-object on the "Attributes" tab of the job if the shell specified in "Start parameter" is preceded by a dash (ex.:-ksh). If the shell specified in "Start parameter" is not preceded by a dash (ex.:ksh), job will run under the profile of the user that started the  Agent/Executor.

Investigation

 

Different options may be specified for calling a Shell. The following occurs when a shell  is specified on a Automic UNIX job:

If you choose for example '-csh,-ksh...' the appropriate default profile (for example: '.cshrc-file') is loaded, but no system profile is loaded.

If no shell is defined, the default shell from the passwd file is used.

Solution

There are 3 alternatives that can be used to set the right environment:

1) Set environment variables in the job

2) Define the job a shell script in unix and start it with 'su - <username> -c "<shellscript>"

3) Run the executor in 'batch'-mode (to be set in the ini-file, refer to the Automic documentation.)

 

(In options 2 and 3, the Executor has to be run with the root account.)