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Bug 1572935

Summary: [DOCS] Typo in prerequisites regarding the firewall command to expose metrics in iptables
Product: OpenShift Container Platform Reporter: shea.stewart
Component: DocumentationAssignee: Michael Burke <mburke>
Status: CLOSED CURRENTRELEASE QA Contact: Meng Bo <bmeng>
Severity: high Docs Contact: Vikram Goyal <vigoyal>
Priority: high    
Version: 3.7.0CC: aos-bugs, jokerman, mmccomas, wmeng
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Last Closed: 2018-07-05 14:03:23 UTC Type: Bug
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Description shea.stewart 2018-04-29 03:38:09 UTC 
Description of problem:
Typo in prerequisites regarding the firewall command to expose metrics in iptables

Version-Release number of selected component (if applicable):
all, including OCP

How reproducible:
All of the time

Steps to Reproduce:
1. Navigate to any documentation page such as: https://docs.openshift.com/container-platform/3.9/install_config/install/prerequisites.html
2.Search for the command `iptables OS_FIREWALL_ALLOW -p tcp -m state --state NEW -m tcp \
    --dport 1936 -j ACCEPT`
3. Run the command and it fails. 

Actual results:
The command fails. 

Expected results:
The command to run correctly. 

Additional info:
The command is missing a `-A` and should be: 
`iptables -A OS_FIREWALL_ALLOW -p tcp -m state --state NEW -m tcp \
    --dport 1936 -j ACCEPT`


Document URL: 

Section Number and Name: 

Describe the issue: 

Suggestions for improvement: 

Additional information:
Comment 1 Michael Burke 2018-06-29 18:18:15 UTC 
https://github.com/openshift/openshift-docs/pull/10540
Comment 2 Michael Burke 2018-07-05 14:03:23 UTC 
Changes are live:
https://docs.openshift.com/container-platform/3.9/install_config/install/prerequisites.html#required-ports