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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BROOKLYN-477) Add docs for target machine requirements/expectations
Date Tue, 20 Jun 2017 12:01:00 GMT

    [ https://issues.apache.org/jira/browse/BROOKLYN-477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16055634#comment-16055634
] 

ASF GitHub Bot commented on BROOKLYN-477:
-----------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/brooklyn-docs/pull/192


> Add docs for target machine requirements/expectations
> -----------------------------------------------------
>
>                 Key: BROOKLYN-477
>                 URL: https://issues.apache.org/jira/browse/BROOKLYN-477
>             Project: Brooklyn
>          Issue Type: Improvement
>            Reporter: Aled Sage
>            Priority: Minor
>
> We should improve our docs for the machine requirements/expectations, for blueprints
to behave as expected.
> This became evident when investigating https://issues.apache.org/jira/browse/BROOKLYN-475
(extra stdout when ssh'ing). For example, our docs could say:
> {noformat}
> It is strongly recommended that VMs are configured so that no additional stdout is written

> when executing remote ssh (or WinRM) commands. Such stdout risks interfering with the
> response parsing in some blueprints.
> For example, if configuring the VM to write out "Last login" information, this should
be 
> done for only "interactive" shells (see http://stackoverflow.com/a/415444/1393883 for
more 
> details).
> {noformat}
> There are no doubt many other things we could mention, such as:
> * {{/tmp/}} should be writable
> * Sufficient entropy (e.g. see https://brooklyn.apache.org/v/latest/ops/troubleshooting/increase-entropy.html
for setting up Brooklyn itself)
> * Outbound network connectivity (but not all blueprints require that)



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