Konstantine Karantasis created KAFKA-8417:
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Summary: Remove redundant network definition --net=host when
starting testing docker containers
Key: KAFKA-8417
URL: https://issues.apache.org/jira/browse/KAFKA-8417
Project: Kafka
Issue Type: Bug
Components: system tests
Reporter: Konstantine Karantasis
Assignee: Konstantine Karantasis
The switches {{--net}} and {{--network}} are equivalent in docker, with the
latter being preferred.
(see [https://github.com/docker/cli/blob/master/cli/command/container/opts.go]
where currently there's the comment: _// We allow for both "--net" and
"--network", although the latter is the recommended way._)
However, in recent Docker versions, defining both as follows:
{{--net=host --network ducknet}}
fails with error:
{{docker: conflicting options: cannot attach both user-defined and
non-user-defined network-modes.}}
Removing {{--net=host}} and keeping only the user-defined network should fix
the issue.
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