Bug 1271414 - [DOCS] Document maximum name lengths for objects
[DOCS] Document maximum name lengths for objects
Product: OpenShift Container Platform
Classification: Red Hat
Component: Documentation (Show other bugs)
Unspecified Unspecified
low Severity low
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Assigned To: Ashley Hardin
Wang Haoran
Vikram Goyal
Depends On:
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Reported: 2015-10-13 19:59 EDT by Vikram Goyal
Modified: 2016-05-02 09:47 EDT (History)
6 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2016-05-02 09:47:35 EDT
Type: Bug
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RHEL 7.3 requirements from Atomic Host:
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Description Vikram Goyal 2015-10-13 19:59:53 EDT
As per this GH Issue and discussion:

Comment 2 Ashley Hardin 2016-03-21 16:13:08 EDT
@Miciah, Can you please offer guidance as to what individual limits need documented? Thanks!
Comment 3 Miciah Dashiel Butler Masters 2016-03-30 00:08:55 EDT
I raised the GitHub issue because I ran into limits service and route names when trying to use a template.  It would have been helpful to me to have had the following documented at a minimum:

• Maximum project name length.
• Maximum service name length.
• Maximum route name length.

It may be helpful to document maximum lengths for other string values that can appear in templates and elsewhere:

• Maximum template name length.
• Maximum replicationcontroller/deploymentconfig name length.
• Maximum service port name length.
• Maximum route host name, path, and certificate chain lengths.
• Maximum buildconfig name, URI, and ref lengths.
• Maximum imagestream name length.
• Maximum label key and value lengths.
• Maximum annotation key and value lengths.
• Maximum environment variable name and value lengths.
• Maximum parameter name, value, displayname, and description lengths.
• Any limit on command length for readiness or liveness probes or build hooks.

Unfortunately, I do not know the limits for most of these.  If you already know where to look or whom to ask, great! Otherwise, please let me know, and I'll investigate and ask around.
Comment 4 Ashley Hardin 2016-04-05 11:21:22 EDT
@Michal - After looking through some AOS team lists, I *think* you are an appropriate person to contact about this, but please correct me if I am wrong. I am looking for help documenting maximum name lengths for objects. Are you able to guide me, or point me in the right direction? Thanks!
Comment 5 Ashley Hardin 2016-04-11 16:28:40 EDT
Per Michal (via e-mail):

Most of the "name" fields are following k8s standard which is DNS_LABEL.
See this link for details:
Comment 7 Ashley Hardin 2016-04-20 13:45:54 EDT
Hi, Wang. 
Can you please take a look and let me know if we can move forward in publishing these changes? Thanks!
Comment 8 Wang Haoran 2016-04-20 21:31:21 EDT
I thinks this approach works, will change to verify after pr merged.
Comment 9 openshift-github-bot 2016-04-21 09:02:28 EDT
Commits pushed to master at https://github.com/openshift/openshift-docs

Bug 1271414, documented maximum name lengths for objects

Merge pull request #1887 from ahardin-rh/max-namelengths

Bug 1271414, documented maximum name lengths for objects

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