# OOD on CentOS 8

**URL:** <https://discourse.openondemand.org/t/ood-on-centos-8/1111>\
**Category:** Get Help\
**Tags:** question\
**Created:** [September 10, 2020, 3:50pm UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111 "2020-09-10T15:50:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![susan](https://avatars.discourse-cdn.com/v4/letter/s/c5a1d2/32.png) [@susan](https://discourse.openondemand.org/u/susan)\
**Post date:** [September 10, 2020, 3:50pm UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111/1 "2020-09-10T15:50:26Z")

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Has anyone tried updating Open OnDemand under CentOS 8?

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**Author:** ![datakid](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/datakid/32/248_2.png) [@datakid](https://discourse.openondemand.org/u/datakid)\
**Post date:** [September 11, 2020, 12:29am UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111/2 "2020-09-11T00:29:48Z")

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Yes, we are using 1.7.x successfully using LDAP and AuthBasic. Was there anything in particular you wanted to know? Still working on getting 1.8 working in RHEL8, Dex is new to us and causing issues.

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**Author:** ![tdockendorf](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/tdockendorf/32/202_2.png) [@tdockendorf](https://discourse.openondemand.org/u/tdockendorf)\
**Post date:** [September 11, 2020, 1:36am UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111/3 "2020-09-11T01:36:47Z")

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Let us know what issues you’re facing with RHEL8 , as we’ve only lightly tested that deployment as OSC still runs all RHEL7. Testing for RHEL8 has been mostly done inside Vagrant or Docker.

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**Author:** ![tdockendorf](https://sea1.discourse-cdn.com/flex015/user_avatar/discourse.openondemand.org/tdockendorf/32/202_2.png) [@tdockendorf](https://discourse.openondemand.org/u/tdockendorf)\
**Post date:** [September 11, 2020, 2:32pm UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111/4 "2020-09-11T14:32:31Z")

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I just discovered we forgot to include `mod_auth_openidc` in the 1.8 repos that is necessary to use Dex with OnDemand. This thread has the steps to remedy this issue:

> [@Httpd wont start: Invalid command 'OIDCStateMaxNumberOfCookies' + Dex confusion](https://discourse.openondemand.org/t/httpd-wont-start-invalid-command-oidcstatemaxnumberofcookies-dex-confusion/1112/5):
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> I just verified with Vagrant that the necessary configs are working with CentOS 8. I had forgotten we do ship a newer mod\_auth\_openidc but it appears like I mistakenly did not include that in 1.8 repos. I think that’s the issue you were facing because the RHEL8 version of mod\_auth\_openidc is 2.3.7 which is too old to support OIDCStateMaxNumberOfCookies I’d recommend updating to use the mod\_auth\_openidc shipped by OnDemand 1.8 repos: dnf module disable mod\_auth\_openidc:2.3 yum update mod\_auth\_…

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**Author:** ![westburg.2](https://avatars.discourse-cdn.com/v4/letter/w/0ea827/32.png) [@westburg.2](https://discourse.openondemand.org/u/westburg.2)\
**Post date:** [May 26, 2022, 3:43pm UTC](https://discourse.openondemand.org/t/ood-on-centos-8/1111/5 "2022-05-26T15:43:10Z")

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Closed on May 26, 2022, 3:43pm UTC