# Alternator mode doesn't start in Docker

**URL:** https://forum.scylladb.com/t/alternator-mode-doesnt-start-in-docker/2509
**Category:** ScyllaDB
**Tags:** alternator, docker
**Created:** [August 19, 2024, 12:48pm UTC](https://forum.scylladb.com/t/alternator-mode-doesnt-start-in-docker/2509 "2024-08-19T12:48:19Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![cbwilliamsme](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@cbwilliamsme](https://forum.scylladb.com/u/cbwilliamsme)
#### Post date: [August 19, 2024, 12:48pm UTC](https://forum.scylladb.com/t/alternator-mode-doesnt-start-in-docker/2509/1 "2024-08-19T12:48:19Z")

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I’m trying to run the alternator in Docker with:

`docker run --name some-scylla --hostname some-scylla -p 8000:8000 -d scylladb/scylla --smp 1 --memory=750M --overprovisioned 1 --alternator-port=8000`

and when I watch the log, scylla starts, then shuts down, then restarts, wash, rinse, repeat. What am I missing?

I’m running on a M3 MacBook with Sonoma 14.6.1

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<div class="post-metadata">

### Author: ![tzach](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.scylladb.com/tzach/32/172_2.png) [@tzach](https://forum.scylladb.com/u/tzach)
#### Post date: [August 19, 2024, 1:30pm UTC](https://forum.scylladb.com/t/alternator-mode-doesnt-start-in-docker/2509/2 "2024-08-19T13:30:10Z")

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Can you please add the relevant logs (first error?)

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<div class="post-metadata">

### Author: ![cbwilliamsme](https://avatars.discourse-cdn.com/v4/letter/c/f6c823/32.png) [@cbwilliamsme](https://forum.scylladb.com/u/cbwilliamsme)
#### Post date: [August 19, 2024, 2:01pm UTC](https://forum.scylladb.com/t/alternator-mode-doesnt-start-in-docker/2509/3 "2024-08-19T14:01:05Z")

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Problem solved!

`docker run --name scylla -p 8000:8000 -d scylladb/scylla:latest --overprovisioned 1 --smp 1 --alternator-port=8000 --alternator-write-isolation=always`

works!

I guess I needed the `--alternator-write-isolation=always`