### Author:  [@garethhumphriesgkc](https://discuss.elastic.co/u/garethhumphriesgkc)
#### Post date: [February 21, 2023, 10:32pm UTC](https://discuss.elastic.co/t/improving-resiliency-or-changing-settings-of-system-indices/326108/1 "2023-02-21T22:32:00Z")
Hi,
I'm trying to improve the resiliency of my elastic stack. I want to make it tolerant to any two node failures, but I can't update system indices to have more than one replica.
The setting in question is `index.auto_expand_replicas` - I'd like to make this for example `0-2` instead of `0-1`, but when I try I get:
```auto
PUT /.kibana_7.17.2_001/_settings
{"index.auto_expand_replicas":"0-2"}
{
"type":"security_exception",
"reason":"action [indices:admin/settings/update] is unauthorized for user [] with effective roles [kibana_admin,kibana_monitoring,modify_system_indices,monitoring_user,superuser] on restricted indices [.kibana_7.17.2_001], this action is granted by the index privileges [manage,all]"
}
```
As you can see, I've created a role to grant `all` to `.*` in an attempt to explicitly allow it, but still no dice.
Is there any way I can modify these settings?
There are some other settings I'd like to be able to change too, so I can control the addition of new data nodes to my cluster - right now I can't control when system indices get allocated to a new node, so I have to just hope everything goes well rather than cut indices across slowly.
Any tips on how I can change settings on system indices much appreciated.
---
### Author:  [@garethhumphriesgkc](https://discuss.elastic.co/u/garethhumphriesgkc)
#### Post date: [March 1, 2023, 1:31am UTC](https://discuss.elastic.co/t/improving-resiliency-or-changing-settings-of-system-indices/326108/2 "2023-03-01T01:31:05Z")
Seems no-one else has any ideas either. Does that mean that, fundamentally, Elasticsearch just doesn't support any better than N+1 resiliency?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [March 1, 2023, 1:43am UTC](https://discuss.elastic.co/t/improving-resiliency-or-changing-settings-of-system-indices/326108/3 "2023-03-01T01:43:47Z")
AFAIK we don't support changing things for system indices as they will be overwritten the next time you upgrade.
That's probably not what you want to hear sorry, I would suggest raising a feature request on GitHub to see what can be done.
---
### Author:  [@garethhumphriesgkc](https://discuss.elastic.co/u/garethhumphriesgkc)
#### Post date: [March 1, 2023, 1:45am UTC](https://discuss.elastic.co/t/improving-resiliency-or-changing-settings-of-system-indices/326108/4 "2023-03-01T01:45:22Z")
Not ideal, but nice to get confirmation I'm not missing something.
Sure thing, I'll raise an FR. Thanks for responding.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 29, 2023, 1:46am UTC](https://discuss.elastic.co/t/improving-resiliency-or-changing-settings-of-system-indices/326108/5 "2023-03-29T01:46:17Z")
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