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apssh-0.9.4
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Asynchroneous Parallel ssh
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | apssh-0.9.4 |
| نام | apssh |
| نسخه کتابخانه | 0.9.4 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Thierry Parmentelat |
| ایمیل نویسنده | thierry.parmentelat@inria.fr |
| آدرس صفحه اصلی | - |
| آدرس اینترنتی | https://pypi.org/project/apssh/ |
| مجوز | CC BY-SA 4.0 |
# `apssh` - asynchronous parallel ssh
## what's included ?
This tool leverages the Python asynchronous paradigm and comes with
* a standalone `apssh` command for running remote commands on a bunch of hosts
in parallel, as well as the `appull` and `appush` commands to perform parallel
copies, that sysadmins might find useful for their routine jobs,
* an API with which one can create **`SshJob`** objects
in conjunction with an `asynciojob`'s **`Scheduler`** for
**orchestrating** them.
Please refer to <http://apssh.readthedocs.io/> for a complete documentation bundle.
## what is `nepi-ng` ?
Originally, the idea presented here addresses the needs of experimental
research, where an experiment often boils down to running jobs like preparing a
set of nodes, initializing them, running some bash script, collecting results,
all of them having temporal relationships.
To that end, the 2 libraries `asynciojobs` and `apssh` complement each other
to offer a powerful programing environment that we have branded `nepi-ng`; its 2 parts are thus:
## `asynciojobs`
`asynciojobs` is a microscopic orchestration scheduler for asyncio-based jobs -
[see this link for
details](https://github.com/parmentelat/asynciojobs/blob/master/README.md).
This is the part that handles the temporal relationships.
## `apssh`
`apssh` ships with a few classes that allow you to write jobs in the
`asynciojobs` sense, that will actually run on ssh:
* `SshNode` : describe how to reach a node (possible through a gateway)
* `SshJob` : to run one or several remote commands; each of these can be
* `Run` : that is designed to run a command readily available on the target
node
* `RunScript` : when you have a local script file to run remotely, so there is
a need to push it over there prior to running it
* `RunString` : same idea, but you do not even have a local file, it's just a
python string in memory; useful to embed your shell code inside a python
code
* `Pull` or `Push` for file transfers over SFTP
As the names may suggest:
* an `SshNode` instance contains the details of the target node (hostname,
username, gateway if relevant, etc...), and it can be thought of as an ssh
connection;
* `SshJob`, is suitable to run as `asynciojobs's` jobs, i.e. inside a scheduler;
* an `SshJob` instance contains a list of the actual commands to run, that can
be a mix of remote executions and file transfers.
## examples
You can see a very simple example of that idea implemented in 2 files
* [the python code](https://github.com/fit-r2lab/r2lab-demos/blob/master/orion/angle-measure.py)
* and [the related shell script](https://github.com/fit-r2lab/r2lab-demos/blob/master/orion/angle-measure.sh)
* plus, a summary of the objects involved [is depicted in this
figure](https://github.com/fit-r2lab/r2lab-demos/blob/master/orion/jobs.png)
Another, simpler example, illustrates how to take advantage of the YAML loader, see
* [the `my-first-nepi-ng-script` folder in
<https://github.com/fit-r2lab/demos](https://github.com/fit-r2lab/r2lab-demos/tree/master/my-first-nepi-ng-script)
* and in particular the 2 versions named `demo-v1.py` and `demo-v2.py` that
implement the exact same behaviour but that use
* a pure Python approach (v1)
* the YAML loader (v2)
نیازمندی
| مقدار | نام |
|---|---|
| - | asyncssh |
| - | asynciojobs |
| - | jinja2 |
| - | pyyaml |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.5 | Python |
نحوه نصب
نصب پکیج whl apssh-0.9.4:
pip install apssh-0.9.4.whl
نصب پکیج tar.gz apssh-0.9.4:
pip install apssh-0.9.4.tar.gz