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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10465) Jepsen: runit supervised sshd is stopped on tear down
Date Tue, 09 Oct 2018 12:32:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16643265#comment-16643265

ASF GitHub Bot commented on FLINK-10465:

GJL closed pull request #6779: [FLINK-10465][tests] Do not stop sshd if it is supervised by
URL: https://github.com/apache/flink/pull/6779

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):

diff --git a/flink-jepsen/src/jepsen/flink/utils.clj b/flink-jepsen/src/jepsen/flink/utils.clj
index 50d0075ca35..5f96f8c00b7 100644
--- a/flink-jepsen/src/jepsen/flink/utils.clj
+++ b/flink-jepsen/src/jepsen/flink/utils.clj
@@ -86,4 +86,7 @@
   (info "Stop all supervised services.")
-    (c/exec :rm :-f (c/lit (str "/etc/service/*")))))
+    ;; HACK:
+    ;; Remove all symlinks in /etc/service except sshd.
+    ;; This is only relevant when tests are run in Docker because there sshd is started using
+    (c/exec :find (c/lit (str "/etc/service -maxdepth 1 -type l ! -name 'sshd' -delete")))))


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> Jepsen: runit supervised sshd is stopped on tear down
> -----------------------------------------------------
>                 Key: FLINK-10465
>                 URL: https://issues.apache.org/jira/browse/FLINK-10465
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.7.0, 1.6.2
>            Reporter: Gary Yao
>            Assignee: Gary Yao
>            Priority: Critical
>              Labels: pull-request-available
>             Fix For: 1.7.0, 1.6.2
> When tearing down the _DB_, we tear down all services supervised by runit. However when
running the tests in Docker, sshd is under supervision by runit. When sshd is stopped, the
tests cannot be continued because the control node cannot interact with the DB nodes anymore.
> *How to reproduce*
> Run command below in control-node container:
> {code}
> ./docker/run-tests.sh 1 [...]/flink/flink-1.6.1/flink-1.6.1-bin-hadoop28-scala_2.11.tgz
> {code}
> *Expected behavior*
> sshd should never be stopped

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