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https://issues.apache.org/jira/browse/HDDS-1567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16866569#comment-16866569
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Elek, Marton commented on HDDS-1567:
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Thank you very much to explain it [~eyang]. Finally it's more clear for me and
I can imagine what is the goal.
I think it's a good idea, but I propose to achieve the same goal with a
slightly different implementation.
{quote}Are you calling this tag?
{quote}
No, I am calling the value of the <tag> elements as tags: (for example this
line:
[https://github.com/apache/hadoop/blob/trunk/hadoop-hdds/common/src/main/resources/ozone-default.xml#L43)]
But, back to my proposal. I propose the following implementation:
# Improve OzoneConfiguration to load values directly from environment
variables based on naming convention. For example in case of ozone.om.address
if OZONE_OM_ADDRESS is set it should be considered with higher priority.
# With this modification envtoconf.py will be optional for ozone-site.xml (not
for log4j/spark settings)
# We can introduce smart default values (eg.
ozone.om.http-address=${ozone.om.address}:9874. With this approach we don't
need to set the same hostname multiple times, as you suggested.
# As a result we can support the use case what you described but *it can work
exactly the same way* with both the on-prem and containerized installs.
> Define a set of environment variables to configure Ozone docker image
> ---------------------------------------------------------------------
>
> Key: HDDS-1567
> URL: https://issues.apache.org/jira/browse/HDDS-1567
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Eric Yang
> Priority: Major
>
> For developer that tries to setup docker image by end for testing purpose, it
> would be nice to predefine a set of environment variables that can be passed
> to Ozone docker image to configure the minimum set of configuration to start
> Ozone containers. There is a python script that converts environment
> variables to config, but documentation does not show what setting can be
> passed to configure the system. This task would be a good starting point to
> document the available configuration knobs.
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