# Did the GitLab hostkey change?

**URL:** https://renku.discourse.group/t/did-the-gitlab-hostkey-change/1128
**Category:** General
**Created:** [8 January 2025 10:24 UTC](https://renku.discourse.group/t/did-the-gitlab-hostkey-change/1128 "2025-01-08T10:24:58Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![tschai](https://avatars.discourse-cdn.com/v4/letter/t/5f8ce5/32.png) [@tschai](https://renku.discourse.group/u/tschai)
#### Post date: [8 January 2025 10:24 UTC](https://renku.discourse.group/t/did-the-gitlab-hostkey-change/1128/1 "2025-01-08T10:24:58Z")

</div>

Hi, I’ve been accessing the RenkuLab GitLab using SSH for the past few weeks. Coming back from the holidays, SSH now complains that the host key doesn’t match anymore. As the [instance config](https://gitlab.renkulab.io/help/instance_configuration#ssh-host-keys-fingerprints) doesn’t list any, I wanted to know if the keys were actually supposed to change?

Going to assume it’s fine because the GitLab was down the last time I tried accessing it before the holidays, so this might be an accidental change from the recovery and my work isn’t very security sensitive anyway.

The current keys:

```txt
gitlab.renkulab.io ssh-rsa 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
gitlab.renkulab.io ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBJHW/Tl6kwIht+k5kYLRjBllZYMr8Fxg50WJrGT1pNk6blc2WftOG6JLMYdKTWjiQeirao2iB3LMEaMHFepE4Is=
gitlab.renkulab.io ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICepFXmk0dhq34fTC4odJNZLIw7v4P84YTVW9YInGtk9

```

The ones saved in my `known_hosts`:

```txt
gitlab.renkulab.io ssh-rsa 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
gitlab.renkulab.io ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBBDQrXc8s8P+K6gO/NJbvsPkGQUJGx1beKYy+16g0SMIUSn4u34/Zb0KUkQcmxLwm7/5c+WvGIYl+fgSrUQ90AU=
gitlab.renkulab.io ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINY1WiygpSfhFsVE8EfbUOX8N3c0+CwpznYfPZp1LYm8

```

---

<div class="post-metadata">

### Author: ![wesjdj](https://yyz2.discourse-cdn.com/free1/user_avatar/renku.discourse.group/wesjdj/32/816_2.png) [@wesjdj](https://renku.discourse.group/u/wesjdj)
#### Post date: [8 January 2025 10:52 UTC](https://renku.discourse.group/t/did-the-gitlab-hostkey-change/1128/2 "2025-01-08T10:52:37Z")

</div>

Hi @tschai,

My apologies for this. Yes, the host keys for [Renkulab.io](http://Renkulab.io) GitLab did in fact change during the maintenance window. This was not a planned action for the mid-December maintenance window, but was the result of having to restore services from backup, resulting in new host keys being generated.

The current keys which you posted are indeed the currently valid keys for [Renkulab.io](http://Renkulab.io) GitLab.

Thanks,

Wes