Potential issue coming to CentOS7 slaves (glibc, missing UTF-8 locale)

[Sandro Bonazzola]

Please open a bug on bugs.centos.org to let them know about the issue

Il 19 Set 2017 18:10, "Barak Korren" <bkorren at redhat.com> ha scritto:

> Seems there is an issue with locale files in recent CentOS versions,
> and we're hitting it in slaves that have been updated recently.
>
> The symptoms are that Jenkins disconnects from the slave and then
> refuses to reconnect to it. The agent log in Jenkins shows:
>
> [09/19/17 15:42:56] [SSH] Connection closed.
>
> [09/19/17 15:58:48] [SSH] Opening SSH connection to
> vm0002.workers-phx.ovirt.org:22.
> [09/19/17 15:58:48] [SSH] WARNING: SSH Host Keys are not being
> verified. Man-in-the-middle attacks may be possible against this
> connection.
>
> [09/19/17 15:58:48] [SSH] Authentication successful.
> SSH connection reports a garbage before a command execution.
> Check your .bashrc, .profile, and so on to make sure it is quiet.
> The received junk text is as follows:
> /etc/profile.d/lang.sh: line 19: warning: setlocale: LC_CTYPE: cannot
> change locale (en_US.utf8): No such file or directory
> /etc/profile.d/lang.sh: line 20: warning: setlocale: LC_COLLATE:
> cannot change locale (en_US.utf8): No such file or directory
> /etc/profile.d/lang.sh: line 23: warning: setlocale: LC_MESSAGES:
> cannot change locale (en_US.utf8): No such file or directory
> /etc/profile.d/lang.sh: line 26: warning: setlocale: LC_NUMERIC:
> cannot change locale (en_US.utf8): No such file or directory
> /etc/profile.d/lang.sh: line 29: warning: setlocale: LC_TIME: cannot
> change locale (en_US.utf8): No such file or directory
>
> null
> [09/19/17 15:58:48] Launch failed - cleaning up connection
> [09/19/17 15:58:48] [SSH] Connection closed.
>
>
> The same locale error messages can also be reproduced on the slave by
> running an interactive login from the console or 'su -'. When running
> 'locale -a' you can also see the en_US.UTF-8 locale is somehow
> missing.
>
> Looking around for this I found the following:
> https://github.com/CentOS/sig-cloud-instance-images/issues/71
>
> I tried downgrading glibc back to the version we had before, but that
> did not seem to resolve the issue. Eventually I managed to resolve it
> by running 'localedef -i en_US -f UTF-8 en_US.UTF-8' on the slave.
>
> I've seen this happen on 'vm0002.workers-phx.ovirt.org' which is
> attached to the staging Jenkins, but I've no reason to believe this
> won't start impacting production slaves.
>
> We need to research this further and find out if we need to do
> something to prevent this issue from surfacing on production slaves.
>
> --
> Barak Korren
> RHV DevOps team , RHCE, RHCi
> Red Hat EMEA
> redhat.com | TRIED. TESTED. TRUSTED. | redhat.com/trusted
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