condor-git-config 0.1.1

dynamically configure an HTCondor node from a git repository

Hook to dynamically configure an HTCondor node from a git repository.

Hook Overview

The hook is integrated into a Condor config file to perform the following workflow:

• Fetch a git repository to a local cache

• Use patterns to select configuration files

• Dynamically include configuration in condor

To integrate the hook, use the include command syntax in any HTCondor config file:

include command : condor-git-config https://git.mydomain.com/condor-repos/condor-configs.git

Note

Any arguments in include command are passed directly to the program, without evoking a shell. This means that escapes and quotes required for passing arguments on the shell must not be used in the configuration.

Usage Notes

The hook requires at least Python 3.3 to run. A list of options is available by passing -h or --help to the executable.

Installation

Installation provides the condor-git-config executable. All other dependencies are installed automatically.

Stable release version

pip3 install condor_git_config

Current development version

git clone https://github.com/maxfischer2781/condor-git-config.git
./condor-git-config/setup.py install

Argument Files

The condor-git-config executable can use the @ prefix character to read arguments from files. This allows you to prepare options externally

echo $(hostname -d) >> /etc/mycloud/domain

and have them used dynamically to adjust configuration

include command : condor-git-config --branch @/etc/mycloud/domain -- https://git.mydomain.com/condor-repos/condor-configs.git

Configuration Recursion

By default, condor-git-config will not recurse into sub-directories. This allows you to have additional configuration, which is conditionally integrated. For example, consider the following git repository tree:

|- commong.cfg
|- security.cfg
|- aaaron-cloud.cfg
|- aaaron-cloud/
|  |- overwrites.cfg
|  |- proxy.cfg
|- beebee-cloud.cfg

The aaaron-cloud folder will be ignored by default. You can conditionally include the *-cloud.cfg files like this:

--blacklist '.-cloud\.cfg' --whitelist @/etc/mycloud/flavour

This allows you to further include the files in aaaron-cloud by using include in aaaron-cloud.cfg:

# aaaron-cloud.cfg
include : $(GIT_CONFIG_CACHE_PATH)/overwrites.cfg
include : $(GIT_CONFIG_CACHE_PATH)/proxy.cfg