# How can I custom resource after ray cluster start

**URL:** <https://discuss.ray.io/t/how-can-i-custom-resource-after-ray-cluster-start/15781>\
**Category:** Ray Clusters\
**Created:** [September 12, 2024, 9:18am UTC](https://discuss.ray.io/t/how-can-i-custom-resource-after-ray-cluster-start/15781 "2024-09-12T09:18:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![lijy263](https://avatars.discourse-cdn.com/v4/letter/l/ee7513/32.png) [@lijy263](https://discuss.ray.io/u/lijy263)\
**Post date:** [September 12, 2024, 9:18am UTC](https://discuss.ray.io/t/how-can-i-custom-resource-after-ray-cluster-start/15781/1 "2024-09-12T09:18:20Z")

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I’m currently using an exiting Ray Cluster, and aim to launch a series of tasks when control the level of concurrency(for instance, only 3 tasks running simultaneously even with 10 tasks pending, cpus/memory available)).  
I always use custom resources with self-initialed Ray Cluster before, but I find this method unsuitable as the existing Ray cluster was not initialized by me.

Any solution?