# \[SOLVED\]After upgrade to 7.7.0 in a cluster of 3 nodes. - failed to retrieve password hash for reserved user \[elastic\]
**URL:** https://discuss.elastic.co/t/solved-after-upgrade-to-7-7-0-in-a-cluster-of-3-nodes-failed-to-retrieve-password-hash-for-reserved-user-elastic/234700
**Category:** Elasticsearch
**Tags:** elastic-stack-security
**Created:** [May 28, 2020, 9:13am UTC](https://discuss.elastic.co/t/solved-after-upgrade-to-7-7-0-in-a-cluster-of-3-nodes-failed-to-retrieve-password-hash-for-reserved-user-elastic/234700 "2020-05-28T09:13:56Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Andreas\_Falk](https://discuss.elastic.co/u/Andreas_Falk)
#### Post date: [May 28, 2020, 9:13am UTC](https://discuss.elastic.co/t/solved-after-upgrade-to-7-7-0-in-a-cluster-of-3-nodes-failed-to-retrieve-password-hash-for-reserved-user-elastic/234700/1 "2020-05-28T09:13:56Z")
Hi,
We have a small cluster that we upgraded from 7.6.2 to 7.7.0 with .deb's.
Everything went fine with the upgrade.
Plugins were updated and all was rainbows and ponies 🙂
Then when I tried to update the plugins in kibana things were looking interesting.
I can not connect to the elasticsearch API with the set credentials.
[2020-05-28T10:22:16,825][INFO][o.e.x.s.a.AuthenticationService] [log01] Authentication of [elastic] was terminated by realm [reserved] - failed to authenticate user [elastic]
[2020-05-28T10:22:16,871][ERROR][o.e.x.s.a.e.ReservedRealm] [log01] failed to retrieve password hash for reserved user [elastic]
org.elasticsearch.action.UnavailableShardsException: at least one primary shard for the index [.security-7] is unavailable
Any Ideas?
--
Regards Falk
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### Author:  [@Andreas\_Falk](https://discuss.elastic.co/u/Andreas_Falk)
#### Post date: [May 28, 2020, 9:47am UTC](https://discuss.elastic.co/t/solved-after-upgrade-to-7-7-0-in-a-cluster-of-3-nodes-failed-to-retrieve-password-hash-for-reserved-user-elastic/234700/2 "2020-05-28T09:47:22Z")
Humm,
This is now solved.
And I wish I could say what we did...
My working assumption is that the cluster was in a failed mode so the master node could not read .security index..
After a restart of the whole cluster things are getting back to some kind of likenesses of working 🙂
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 25, 2020, 9:47am UTC](https://discuss.elastic.co/t/solved-after-upgrade-to-7-7-0-in-a-cluster-of-3-nodes-failed-to-retrieve-password-hash-for-reserved-user-elastic/234700/3 "2020-06-25T09:47:31Z")
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