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Bug 1512813

Summary: [DOCS] Add notes to scale up nodes in proxy env
Product: OpenShift Container Platform Reporter: Takayoshi Kimura <tkimura>
Component: DocumentationAssignee: Gaurav Nelson <gnelson>
Status: CLOSED CURRENTRELEASE QA Contact: Johnny Liu <jialiu>
Severity: medium Docs Contact: Vikram Goyal <vigoyal>
Priority: medium    
Version: 3.6.0CC: aos-bugs, jokerman, mmccomas, tkimura
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Last Closed: 2018-02-18 23:18:35 UTC Type: Bug
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Description Takayoshi Kimura 2017-11-14 07:39:43 UTC 
Document URL: 

https://docs.openshift.com/container-platform/latest/install_config/adding_hosts_to_existing_cluster.html
https://docs.openshift.com/container-platform/latest/install_config/http_proxies.html#configuring-no-proxy

Section Number and Name: 

Installation and Configuration / Adding Hosts to an Existing Cluster
Installation and Configuration / Working with HTTP Proxies

Describe the issue: 

Scaleup playbook doesn't update NO_PROXY in master services nor restart master services. It's currently designed behavior as it only configures the new host.

https://bugzilla.redhat.com/show_bug.cgi?id=1378840

However at least 4 customers got an issue with this NO_PROXY pitfall when scaling up. It should be noted in the doc.

Suggestions for improvement: 

In "Adding Hosts to an Existing Cluster" section, mention about NO_PROXY in master configuration and let users modify NO_PROXY in the master service if needed.

In "Working with HTTP Proxies" section, recommend users to use domain name rather than list of hostnames for scaling up nodes, so they don't need to modify it every time.

Additional information:
Comment 1 Gaurav Nelson 2018-02-12 04:58:25 UTC 
Thank you Takayoshi Kimura, I have updated the docs to include recommended notes. The changes are in PR https://github.com/openshift/openshift-docs/pull/7719

You can view the rendered version at:
 - https://github.com/gaurav-nelson/openshift-docs/blob/ce842cb7e11c7cca210a18210e0451f34c905bde/install_config/adding_hosts_to_existing_cluster.adoc#adding-hosts-using-the-advanced-install 

and 

 - https://github.com/gaurav-nelson/openshift-docs/blob/ce842cb7e11c7cca210a18210e0451f34c905bde/install_config/http_proxies.adoc#configuring-no_proxy (note towards the end of this section)
Comment 2 Gaurav Nelson 2018-02-13 00:58:11 UTC 
Added comment on Github PR for @nekop(Takayoshi Kimura)to take a look.
Comment 3 Takayoshi Kimura 2018-02-13 01:23:35 UTC 
Looks good to me.
Comment 4 openshift-github-bot 2018-02-14 01:16:19 UTC 
Commit pushed to master at https://github.com/openshift/openshift-docs

https://github.com/openshift/openshift-docs/commit/6b1f862173def14d171ef4956492b79f27047915
Merge pull request #7719 from gaurav-nelson/bug1512813-fixes

Bug#1512813 - added notes for NO_PROXY variable for scaleup playbook
Comment 5 Gaurav Nelson 2018-02-18 23:18:35 UTC 
Changes are live at https://docs.openshift.com/container-platform/3.7/install_config/adding_hosts_to_existing_cluster.html#adding-nodes-advanced

 and 

https://docs.openshift.com/container-platform/3.7/install_config/http_proxies.html#configuring-no-proxy