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Correct node name validation notes (#65457)

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Edit the `ssh_service` configuration reference partial and
troubleshooting guide for enrolling servers to address feedback that
came up after we merged #64632.
This commit is contained in:
Paul Gottschling
2026-04-27 13:24:06 +00:00
committed by GitHub
parent f7ee8a194b
commit 5bf5b84f15
2 changed files with 9 additions and 5 deletions
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docs/pages/enroll-resources/server-access/troubleshooting-server.mdx
+4 -3
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@@ -181,9 +181,10 @@ Service validates the name of the server against the following pattern:
^[a-zA-Z0-9]+[a-zA-Z0-9\.-]*$
```
In other words, each server's name must begin with an alphanumeric character and
contain only alphanumeric characters, dots, and hyphens. If a node name violates
this pattern, the Auth Service replaces it with a UUID.
Each server's name must begin with an alphanumeric character and contain only
alphanumeric characters, dots, and hyphens. If a node name violates this
pattern, or exceeds 256 characters in length, the Auth Service replaces it with
a UUID (the server's Teleport resource ID).
You can check whether any host names are invalid by adding the `-v` flag when
listing servers:
docs/pages/includes/config-reference/instance-wide.yaml
+5 -2
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@@ -10,8 +10,11 @@ teleport:
# reached by. By default it's equal to hostname.
#
# For Teleport-protected SSH servers, nodename must begin with an alphanumeric
# character and contain only alphanumeric characters, dots, and hyphens.
# Teleport replaces servers with invalid hostnames with random UUIDs.
# character, contain only alphanumeric characters, dots, and hyphens, and be
# no more than 256 characters in length.
#
# If a Teleport-protected server has an invalid nodename, Teleport replaces
# the nodename with the resource ID.
nodename: graviton
# Data directory where Teleport daemon keeps its data.