Christos Bisias created HDDS-7329:
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Summary: Extend ozone admin datanode usageinfo and list info to
accept --hostname parameter
Key: HDDS-7329
URL: https://issues.apache.org/jira/browse/HDDS-7329
Project: Apache Ozone
Issue Type: Bug
Reporter: Christos Bisias
Ozone admin datanode subcommands should be more consistent. Some of them accept
hostname as a parameter, others don't. Extend usageinfo and list info to accept
hostname in addition to uuid and ip address.
There is an hdfs flag *dfs.datanode.use.datanode.hostname* checked by the
SCMNodeManager during start up and if it's true then we can get the datanode
info by providing the hostname with the --ip pamameter, while ip will not be
available anymore.
If we add the --hostname parameter and keep the flag, then it's confusing for
the user. We should deprecate the flag and in every case that it is checked,
keep the default usage, which is having value false. This way, --ip will always
require the ip and if the user needs to get the info with the hostname, he can
use the --hostname parameter.
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