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Backport PR #3257: Update services-basics.md to use jupyterhub_idle_culler

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Erik Sundell
2020-11-14 17:37:17 +01:00
committed by MeeseeksDev[bot]
parent 374a3a7b36
commit bbe377b70a
1 changed files with 18 additions and 12 deletions
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docs/source/getting-started/services-basics.md
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@@ -5,7 +5,7 @@ that interacts with the Hub's REST API. A Service may perform a specific
or action or task. For example, shutting down individuals' single user or action or task. For example, shutting down individuals' single user
notebook servers that have been idle for some time is a good example of notebook servers that have been idle for some time is a good example of
a task that could be automated by a Service. Let's look at how the a task that could be automated by a Service. Let's look at how the
[cull_idle_servers][] script can be used as a Service. [jupyterhub_idle_culler][] script can be used as a Service.
## Real-world example to cull idle servers ## Real-world example to cull idle servers
@@ -15,11 +15,11 @@ document will:
- explain some basic information about API tokens - explain some basic information about API tokens
- clarify that API tokens can be used to authenticate to - clarify that API tokens can be used to authenticate to
single-user servers as of [version 0.8.0](../changelog) single-user servers as of [version 0.8.0](../changelog)
- show how the [cull_idle_servers][] script can be: - show how the [jupyterhub_idle_culler][] script can be:
- used in a Hub-managed service - used in a Hub-managed service
- run as a standalone script - run as a standalone script
Both examples for `cull_idle_servers` will communicate tasks to the Both examples for `jupyterhub_idle_culler` will communicate tasks to the
Hub via the REST API. Hub via the REST API.
## API Token basics ## API Token basics
@@ -78,17 +78,23 @@ single-user servers, and only cookies can be used for authentication.
0.8 supports using JupyterHub API tokens to authenticate to single-user 0.8 supports using JupyterHub API tokens to authenticate to single-user
servers. servers.
## Configure `cull-idle` to run as a Hub-Managed Service ## Configure the idle culler to run as a Hub-Managed Service
Install the idle culler:
```
pip install jupyterhub-idle-culler
```
In `jupyterhub_config.py`, add the following dictionary for the In `jupyterhub_config.py`, add the following dictionary for the
`cull-idle` Service to the `c.JupyterHub.services` list: `idle-culler` Service to the `c.JupyterHub.services` list:
```python ```python
c.JupyterHub.services = [ c.JupyterHub.services = [
{ {
'name': 'cull-idle', 'name': 'idle-culler',
'admin': True, 'admin': True,
'command': [sys.executable, 'cull_idle_servers.py', '--timeout=3600'], 'command': [sys.executable, '-m', 'jupyterhub_idle_culler', '--timeout=3600'],
} }
] ]
``` ```
@@ -101,21 +107,21 @@ where:
## Run `cull-idle` manually as a standalone script ## Run `cull-idle` manually as a standalone script
Now you can run your script, i.e. `cull_idle_servers`, by providing it Now you can run your script by providing it
the API token and it will authenticate through the REST API to the API token and it will authenticate through the REST API to
interact with it. interact with it.
This will run `cull-idle` manually. `cull-idle` can be run as a standalone This will run the idle culler service manually. It can be run as a standalone
script anywhere with access to the Hub, and will periodically check for idle script anywhere with access to the Hub, and will periodically check for idle
servers and shut them down via the Hub's REST API. In order to shutdown the servers and shut them down via the Hub's REST API. In order to shutdown the
servers, the token given to cull-idle must have admin privileges. servers, the token given to cull-idle must have admin privileges.
Generate an API token and store it in the `JUPYTERHUB_API_TOKEN` environment Generate an API token and store it in the `JUPYTERHUB_API_TOKEN` environment
variable. Run `cull_idle_servers.py` manually. variable. Run `jupyterhub_idle_culler` manually.
```bash ```bash
export JUPYTERHUB_API_TOKEN='token' export JUPYTERHUB_API_TOKEN='token'
python3 cull_idle_servers.py [--timeout=900] [--url=http://127.0.0.1:8081/hub/api] python -m jupyterhub_idle_culler [--timeout=900] [--url=http://127.0.0.1:8081/hub/api]
``` ```
[cull_idle_servers]: https://github.com/jupyterhub/jupyterhub/blob/master/examples/cull-idle/cull_idle_servers.py [jupyterhub_idle_culler]: https://github.com/jupyterhub/jupyterhub-idle-culler