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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-9583) VR: In CsDhcp.py preseed both hostaname and localhost to resolve to 127.0.0.1
Date Thu, 10 Nov 2016 08:04:58 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-9583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15653375#comment-15653375
] 

ASF GitHub Bot commented on CLOUDSTACK-9583:
--------------------------------------------

GitHub user murali-reddy opened a pull request:

    https://github.com/apache/cloudstack/pull/1757

    CLOUDSTACK-9583: VR: In CsDhcp.py preseed both hostaname and localhost to resolve to 127.0.0.1

    
    
    The VR executes a ip route flush command as part of configurations. This command performs
a
    DNS lookup on the VR hostname. Since the VR does not have a DNS entry, the ip command
would
    wait 5 seconds before timing out and executing the flush operation. This fix adds the
VR
    hostname to /etc/hosts mapped to 127.0.0.1 to answer the DNS lookup – reducing the
    execution time.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/murali-reddy/cloudstack vr_dhcp_entries

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/cloudstack/pull/1757.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #1757
    
----
commit 4c4696e5e43a870b7504dfde735bc3afd04a843e
Author: Murali Reddy <muralimmreddy@gmail.com>
Date:   2016-11-10T07:55:22Z

    CLOUDSTACK-9583: VR: In CsDhcp.py preseed both hostaname and localhost to resolve to 127.0.0.1
    
    The VR executes a ip route flush command as part of configurations. This command performs
a
    DNS lookup on the VR hostname. Since the VR does not have a DNS entry, the ip command
would
    wait 5 seconds before timing out and executing the flush operation. This fix adds the
VR
    hostname to /etc/hosts mapped to 127.0.0.1 to answer the DNS lookup – reducing the
    execution time.

----


> VR: In CsDhcp.py preseed both hostaname and localhost to resolve to 127.0.0.1
> -----------------------------------------------------------------------------
>
>                 Key: CLOUDSTACK-9583
>                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9583
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>            Reporter: Murali Reddy
>             Fix For: 4.9.1.0
>
>
> It is observed that  'ip route flush' was timing out after 20 seconds with the error
that can't resolve the name of the vrouter. Since this is done for each rule for a router
with a lot of rules, adding the entry to hosts file fixes it and the router provisioning is
observed faster. 



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