[jira] [Resolved] (KUDU-2000) Doc that Kudu requires CAP_SYS_TIME capability in Linux Docker containers

["Grant Henke (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-2000?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Grant Henke resolved KUDU-2000.
-------------------------------
    Fix Version/s: NA
       Resolution: Not A Problem

This is no longer an issue in Docker and it's also no longer an issue in the Kudu docker images because of the existence of the built in NTP client. 

> 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
>            Priority: Major
>             Fix For: NA
>
>
> 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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