ByronHsu opened a new pull request #484:
URL: https://github.com/apache/submarine/pull/484
### What is this PR for?
Support new feature in 0.6.0: tensorboard integration.
- Usage
1. Create a job request that uses tensorboard
2. Write tensorboard log to `/logs/mylog` (The subpath is required due
to this issue in tensorflow
[https://github.com/kubeflow/tf-operator/issues/1053](https://github.com/kubeflow/tf-operator/issues/1053).
We cannot directly write log file to mountPath.)
3. Link to `http://<host>:<ip>/tfboard-${job-name}`, and you can monitor
the tensorboard with ease!
- Implementation
When creating a new job, the backend will not only create original
experiment but also several k8s resources required in tensorboard
The resources can be classified into two categories:
1. Storage
2. Tensorboard serving
**Storage**
The resources required for storage are **persistent volume** and
**persistent volume claim**.
I set the storage path of persistent volume on host path, and mount this
path to MLjob (enable job to generate logs to volume) and Tensorboard (enable
tfboard to access logs).
**Tensorboard Serving**
The resources required here are **deployments, service, and
ingressroute**.
I create the tensorboard apps with deployments and service, and then
redirect it to custom path with the help of ingressroute.
- Example
- tensorboard-example.json
```bash
{
"meta": {
"name": "tensorflow-dist-mnist-byron-1234",
"namespace": "default",
"framework": "TensorFlow",
"cmd": "python /var/tf_mnist/mnist_with_summaries.py
--log_dir=/logs/mylog --learning_rate=0.01 --batch_size=20",
"envVars": {
"ENV_1": "ENV1"
}
},
"environment": {
"image": "apache/submarine:tf-mnist-with-summaries-1.0"
},
"spec": {
"Worker": {
"replicas": 1,
"resources": "cpu=1,memory=1024M"
}
}
}
```
### What type of PR is it?
[Feature]
### Todos
- [ ] Frontend support
- [ ] The logs of job cannot be written directly on the mountPath (As
describe in above). We should fix this problem.
- [ ] Make log path configurable (Currently, it is hard-coded as `/logs` )
- [ ] Support smb-server for shared storage
### What is the Jira issue?
https://issues.apache.org/jira/projects/SUBMARINE/issues/SUBMARINE-701
### How should this be tested?
https://travis-ci.org/github/ByronHsu/submarine/jobs/751658488
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
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