Igor is a simple, file-based job manager written in python. If you want to run server jobs without installing a proper job management system, this is the right solution. All you need are several servers accessing the same (network) folder. You can then create and (remotely) run jobs using Igor from one pc. Linux, MacOs, and Windows are supported.

Getting started

Get the code

git clone https://github.com/jansende/Igor.git
cd Igor/

If you clone Igor into a network folder shared between clients and servers, you are done. If the folders are different, you need to repeat the cloning process for each machine.

Start a server

The recommended way to use Igor, is to login to your remote machines, and start the server using screen.

ssh awesome.server
screen
python jobserver.py
#[Ctrl+A], [D] to leave the screen without killing it
exit

View Jobs

Igor provides a custom command line viewer for your jobs. It is accessed by:

python jobviewer.py

Creating Jobs

Currently Igor does not provide any facilities for creating jobs. However, it is easy to write your own job generator, as the information is written using json:

{
    "Job": {
        "Name": "My Job Title",
        "Priority": 0,
        "Script": "echo 'Hello World'",
        "Status": "ToDo",
        "Worker": "awesome.server",
        "WorkingDirectory": "."
    }
}

The Name field is only used for display purposes.
The Priority field can be used to control the order in which things are run. Higher numbers will be run first.
The Script field is what command/job you are running.
The Status field describes the current status of the job. Use ToDo to make it run when the next server has time to do it. (And not job with higher priority.)
The Worker field specifies on which server to run your job.
The WorkingDirectory field sets the working directory for your command.

Server Customization

You can specify the behaviour of your servers with the config.json file:

{
    "Worker": {
        "JobDirectory"     : ".",
        "filterByName"     : false,
        "RefreshTime"      : 5.0,
        "MaximumJobNumber" : 4
  }
}

The JobDirectory field specifies where the server searches for new jobs to run.
The filterByName field specifies if the server should only run jobs with its server name. (false means it will run any job regardless of the Worker field of the job.)
The RefreshTime field specifies how long the server waits until checking for jobs again. (In this case it is checking every 5 seconds.)
The MaximumJobNumber field is used to specify how many jobs can be run in parallel by the server.