# Sync meet 2023-10-23

In meet:
- Erik
- Georgiana

Agenda:
- Discuss various node sharing reated topics

## Topic overviews

### Resource requests vs limits (memory / cpu)

- https://github.com/2i2c-org/infrastructure/issues/3301
- Different requests/limit ratio for user pods in shared clusters leads to billing fairnes complexity, are requests or limits used?
- Requests/limits -> for now forbid 4x
- Guidance on memory choices

### Instance types to default on

- no official defaults to align around, agreement needed
https://github.com/2i2c-org/infrastructure/issues/3256
- a default set of nodes is reasonable, lets open a PR

### Event handling

- pre-starting nodes is too toily, and costly
- re-configuring users per node is not too toily
- https://github.com/2i2c-org/infrastructure/issues/3293
- low users per node when usage is high is cost inefficient and increases startup time and cloud quota needs

### prePuller config

- [Documented policy about use of JupyterHub chart's prePuller](https://github.com/2i2c-org/infrastructure/issues/2541)
- [Document how to pre-pull images to pre-started nodes during events](https://github.com/2i2c-org/infrastructure/issues/2344)
- almost only relevant when pre-starting nodes
- hard to understand consequences, often not positive

### Node resource allocation script

- Review

### Document infrastructure policies, new doc

Where to doc:
- new section

---

- instance type defaults (https://github.com/2i2c-org/infrastructure/issues/3256)
- references startup times
- resource allocations
- handle events
- prePulling
- isolated page: what contribute to startup times

---

Georgiana:

- document default instance types
- user facing (docs.2i2c.org 2i2c-org/docs)
- We have three default instance types
- Motivation why these
- make sure all clusters have the three instance types available
- https://github.com/2i2c-org/infrastructure/issues/3256
- get comfortable with node resource allocation script

Erik:

- review Yuvi's resource allocation script PR
- maybe cleanup prePuller use?
- maybe overview and possibly cleanup prePuller docs?
- maybe overview and possibly cleanup pre-start node docs?