Siyao Meng created HDDS-17137:
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Summary: Bracket IPv6 literals in the SCM web UI datanode link and
Docker entrypoint WAITFOR
Key: HDDS-17137
URL: https://issues.apache.org/jira/browse/HDDS-17137
Project: Apache Ozone
Issue Type: Task
Reporter: Siyao Meng
Two small IPv6 gaps outside the Java services. Neither affects a supported
deployment path today.
# *SCM web UI:* {{scm-overview.html}} builds each datanode link as
{{<protocol>://<hostname>:<port>}}, where {{hostname}} is the key of the
{{NodeStatusInfo}} JMX map in {{scm.js}}. When a datanode's hostname is an IPv6
literal (no reverse DNS), the link is invalid. The page itself still renders.
# *Docker image entrypoint:*
{{hadoop-ozone/dist/src/main/dockerlibexec/entrypoint.sh}} splits {{WAITFOR}}
with {{cut -d : -f 1}} and {{-f 2}}. A value such as {{[2001:db8::1]:9878}}
yields a wrong host and port, so the wait never succeeds. The compose files
shipped with Ozone use DNS names, so only custom setups are affected.
h3. Fix
* In {{scm.js}} or the template, wrap the host in brackets when it contains a
colon.
* In {{entrypoint.sh}}, take the port after the last colon
({{$\{WAITFOR##*:\}}}) and the host before it, and strip surrounding brackets
before calling {{nc}}. Add a bats test.
Parent epic: HDDS-15763.
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