# Deleting Index kibana
**URL:** https://discuss.elastic.co/t/deleting-index-kibana/293773
**Category:** Kibana
**Created:** [January 7, 2022, 5:06pm UTC](https://discuss.elastic.co/t/deleting-index-kibana/293773 "2022-01-07T17:06:26Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Akhil2](https://discuss.elastic.co/u/Akhil2)
#### Post date: [January 7, 2022, 5:06pm UTC](https://discuss.elastic.co/t/deleting-index-kibana/293773/1 "2022-01-07T17:06:26Z")
Hello there,
Following log entry is appearing in kibana logs. I understand this is because of previous kibana versions. can I delete these indexes? Will deleting this affect my cluster?
```auto
log [15:17:55.850] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.8.1-000010" index aliases - error setting existing index aliases for index .kibana-event-log-7.8.1-000010 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.8.1] has is_hidden set to true on indices [.kibana-event-log-7.8.1-000010] but does not have is_hidden set to true on indices [.kibana-event-log-7.8.1-000011,.kibana-event-log-7.8.1-000012]; alias must have the same is_hidden setting on all indices
log [15:17:55.864] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.9.2-000011" index aliases - error setting existing index aliases for index .kibana-event-log-7.9.2-000011 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.9.2] has is_hidden set to true on indices [.kibana-event-log-7.9.2-000011] but does not have is_hidden set to true on indices [.kibana-event-log-7.9.2-000013,.kibana-event-log-7.9.2-000012]; alias must have the same is_hidden setting on all indices
log [15:17:55.871] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.13.3-000004" index aliases - error setting existing index aliases for index .kibana-event-log-7.13.3-000004 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.13.3] has is_hidden set to true on indices [.kibana-event-log-7.13.3-000004] but does not have is_hidden set to true on indices [.kibana-event-log-7.13.3-000002,.kibana-event-log-7.13.3-000003]; alias must have the same is_hidden setting on all indices
log [15:17:55.873] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.9.2-000012" index aliases - error setting existing index aliases for index .kibana-event-log-7.9.2-000012 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.9.2] has is_hidden set to true on indices [.kibana-event-log-7.9.2-000012] but does not have is_hidden set to true on indices [.kibana-event-log-7.9.2-000013,.kibana-event-log-7.9.2-000011]; alias must have the same is_hidden setting on all indices
log [15:17:55.874] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.9.2-000013" index aliases - error setting existing index aliases for index .kibana-event-log-7.9.2-000013 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.9.2] has is_hidden set to true on indices [.kibana-event-log-7.9.2-000013] but does not have is_hidden set to true on indices [.kibana-event-log-7.9.2-000012,.kibana-event-log-7.9.2-000011]; alias must have the same is_hidden setting on all indices
log [15:17:55.876] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.13.3-000002" index aliases - error setting existing index aliases for index .kibana-event-log-7.13.3-000002 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.13.3] has is_hidden set to true on indices [.kibana-event-log-7.13.3-000002] but does not have is_hidden set to true on indices [.kibana-event-log-7.13.3-000004,.kibana-event-log-7.13.3-000003]; alias must have the same is_hidden setting on all indices
log [15:17:55.879] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.8.1-000011" index aliases - error setting existing index aliases for index .kibana-event-log-7.8.1-000011 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.8.1] has is_hidden set to true on indices [.kibana-event-log-7.8.1-000011] but does not have is_hidden set to true on indices [.kibana-event-log-7.8.1-000010,.kibana-event-log-7.8.1-000012]; alias must have the same is_hidden setting on all indices
log [15:17:55.892] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.8.1-000012" index aliases - error setting existing index aliases for index .kibana-event-log-7.8.1-000012 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.8.1] has is_hidden set to true on indices [.kibana-event-log-7.8.1-000012] but does not have is_hidden set to true on indices [.kibana-event-log-7.8.1-000010,.kibana-event-log-7.8.1-000011]; alias must have the same is_hidden setting on all indices
log [15:17:55.900] [error][eventLog][plugins] error setting existing ".kibana-event-log-7.13.3-000003" index aliases - error setting existing index aliases for index .kibana-event-log-7.13.3-000003 to is_hidden: illegal_state_exception: [illegal_state_exception] Reason: alias [.kibana-event-log-7.13.3] has is_hidden set to true on indices [.kibana-event-log-7.13.3-000003] but does not have is_hidden set to true on indices [.kibana-event-log-7.13.3-000004,.kibana-event-log-7.13.3-000002]; alias must have the same is_hidden setting on all indices
```
Thanks,
Akhil Patel
---
### Author:  [@elasticforme](https://discuss.elastic.co/u/elasticforme)
#### Post date: [January 7, 2022, 6:46pm UTC](https://discuss.elastic.co/t/deleting-index-kibana/293773/2 "2022-01-07T18:46:22Z")
You can delete it.
I just deleted bunch of .kibana index just make sure you keep your current version index as is.
you can check aliases and \_cat/aliases and see where your existing .kibana is pointing to (just incase if you want to check)
---
### Author:  [@Akhil2](https://discuss.elastic.co/u/Akhil2)
#### Post date: [January 7, 2022, 8:09pm UTC](https://discuss.elastic.co/t/deleting-index-kibana/293773/3 "2022-01-07T20:09:46Z")
Thanks Sachin for the information!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 4, 2022, 8:10pm UTC](https://discuss.elastic.co/t/deleting-index-kibana/293773/4 "2022-02-04T20:10:21Z")
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