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Posted to issues@kudu.apache.org by "Mike Percy (JIRA)" <ji...@apache.org> on 2017/06/20 02:11:00 UTC
[jira] [Commented] (KUDU-2000) Doc that Kudu requires CAP_SYS_TIME
capability in Linux Docker containers
[ https://issues.apache.org/jira/browse/KUDU-2000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16055051#comment-16055051 ]
Mike Percy commented on KUDU-2000:
----------------------------------
This issue has been fixed in upstream Docker. Once it makes it into a Docket release I think it's reasonable to document a minimum version of Docker we support Kudu running on due to this issue.
> Doc that Kudu requires CAP_SYS_TIME capability in Linux Docker containers
> -------------------------------------------------------------------------
>
> Key: KUDU-2000
> URL: https://issues.apache.org/jira/browse/KUDU-2000
> Project: Kudu
> Issue Type: Task
> Components: documentation
> Affects Versions: 1.3.1
> Reporter: Mike Percy
>
> When running Kudu in a Docker container, Kudu currently requires the CAP_SYS_TIME capability (or running the docker container with the --privileged flag).
> If run with default privileges, calling ntp_gettime() results in an EPERM error that apparently comes from adjtimex(). In that case, the resulting fatal error from HybridTime looks like the following in the logs:
> {code}
> F0508 22:36:35.687885 1 master_main.cc:68] Check failed: _s.ok() Bad status: Service unavailable: Cannot initialize clock: Error reading clock. ntp_gettime() failed: Operation not permitted
> *** Check failure stack trace: ***
> *** Aborted at 1494282995 (unix time) try "date -d @1494282995" if you are using GNU date ***
> PC: @ 0x7f6696f2c1d7 __GI_raise
> *** SIGABRT (@0x1) received by PID 1 (TID 0x7f66992a9940) from PID 1; stack trace: ***
> @ 0x7f6698c66370 (unknown)
> @ 0x7f6696f2c1d7 __GI_raise
> @ 0x7f6696f2d8c8 __GI_abort
> @ 0x1961719 (unknown)
> @ 0x843a9d google::LogMessage::Fail()
> @ 0x845a43 google::LogMessage::SendToLog()
> @ 0x8435f9 google::LogMessage::Flush()
> @ 0x8463cf google::LogMessageFatal::~LogMessageFatal()
> @ 0x7e9c23 (unknown)
> @ 0x7f6696f18b35 __libc_start_main
> @ 0x7e9629 (unknown)
> @ 0x0 (unknown)
> {code}
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