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34745 discussions

/etc/gai.conf fails to prefer IPv4 over IPv6 for NFS
by sr＠genyosha.net 11 Jun '18

11 Jun '18

Using CentOS 6.9 with IPv4 configured, and _not_ disabling IPv6 yet, we want this NFS client system to prefer the IPv4 address of a dual-stack remote NFS server, which has both A and AAAA records in DNS. Otherwise we get a minutes long pause while automounter tries to mount the IPv6 address -- I can see automounter's '/bin/mount' running, using the AAAA record of the server, until that times-out and the IPv4 address of the server mounts successfully. Disabling IPv6 altogether works around the problem as expected, but is a bigger hammer than we wanted to use. :-) I found posts from others in a similar situation, and proposed solutions included modifying /etc/gai.conf to use: precedence ::ffff:0:0/96 100 I cp'd /usr/share/doc/glibc-common-2.12/gai.conf to /etc/ and tried that, with several other permutations (e.g. uncommenting other blocks of "label" and "precedence" settings) but none achieved the desired effect. Am I misunderstanding how this is supposed to work? Cheers, sr. -- || Steve Rikli ||| Well, we've stared at it... that oughta || || Systems Administrator ||| fix it! Let's get outta here. || || Genyosha Networks ||| || || sr(a)genyosha.net ||| - Crow, MST3K ||

2 6

squishy bell
by Michael Hennebry 11 Jun '18

11 Jun '18

Both Gnome and KDE give me a loud squishy bell at the thought of the drop of a hat. I did not get that in C6. I infer it is a C7-specific thing. Short of disabling my audio altogether, how do I make it go away? Not one of C7's better features. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

3 3

C7, kernel oops, sllub.c
by m.roth＠5-cent.us 11 Jun '18

11 Jun '18

Anyone else seeing this: I've seen it with different line # as an upstream bug: kernel BUG at mm/slub.c:3601. When I look for slub.c, I think I found a slightly different version, since that's a blank line, but it's in the function slab_memory_callbac. On a possibly related note, one of my users who runs debian has been getting a ton of radeon errors... and guess what, it's to do with slab_callback. Anyone want me to post the backtrace from the abort? mark

1 0

Problem with bugs.centos.org
by Nicolas Kovacs 11 Jun '18

11 Jun '18

Hi, I wanted to create an account on bugs.centos.org to report a minor but annoying bug with Dolphin. After trying to register by providing the login (kikinovak) and email address (info(a)microlinux.fr) I'm told that the email is already in use. Uh oh. Maybe I already created an account years ago and then forgot about it. So I click on the field for forgotten passwords, only to be told that there is no one under that name or email address. So I'm hitting a wall. Maybe one of the admins of bugs.centos.org is reading this and can help me out? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

2 2

Centos 7 and priorities
by Michael Hennebry 11 Jun '18

11 Jun '18

I've recently changed to Centos 7. My recollection from C6 is that a couple useful repositories need yum priorities to prevent some mixups. I do not remember what they are. My C6 is gone. Google has not told me what C6 repositories were. In the near future, I will be installing nux and epel. My understanding is that they do play well with each other and with base. Are there common useful C7 repositories that need help playing well with the aforementioned repos? Is there a FAQ or a FM on this? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

2 2

C7, encryption, and clevis
by m.roth＠5-cent.us 11 Jun '18

11 Jun '18

We've been required to encrypt h/ds, and so have been rolling that out over the last year or so. Thing is, you need to put in a password, of course, to boot the system. My manager found a way to allow us to reboot without being at the system's keyboard, a package called clevis. Works fine... except in a couple of very special cases. Those systems, the problem is that, due to older software, and *very* expensive licenses that are tied to a MAC address, I have to spoof the MAC address since my users got new(er) machines. Clevis is trying to contact its password server, using the *real* MAC address, but our DHCP has to serve the *spoofed* MAC address. I know, from trying, that I can't have two entries for the same system. Can anyone suggest a solution? mark

7 17

Convert from LVM
by Matt 08 Jun '18

08 Jun '18

I have a Centos 7 install using EXT4 on LVM. Its running as a VM inside KVM. Issue I have run into is that fstrim does not work due to the LVM. Without fstrim snapshots have gotten huge. Is there a way convert it from LVM to non-LVM without a complete reinstall?

5 8

A touch conused on context
by m.roth＠5-cent.us 07 Jun '18

07 Jun '18

Ok, we've got a set of directories bind mounted on our standard mount point for the web. The directory tree's been set with semanage fcontext -t -e /var/www <ourmountpoint>. In one of the websites under there is <site>/cgi-bin, and under *there are a couple of subdirectories, and a .dat file that is written to (I thihnk it's a counter, or whatever). Yet I see sealerts complaining that, if it was in enforcing mode, would not allow the .cgi that's in the cgi-bin write access on the file. What am I missing here? mark

1 0

git public web frontends
by Alice Wonder 07 Jun '18

07 Jun '18

Hello, Set up a CentOS 7.5 VM linode for git now that github has been bought. I'm not anti-microsoft but I'm worried they will make changes that I don't like (e.g. requiring ms account, changing billing, etc.) so I figured better take control now. Currently moving my private repos and have them set up in my home directory there, but my public repos - I want to set them up with a web interface so people can browse them etc. and do a git clone w/o needing authentication. I'll be putting those in /srv/git and using a different username than the account for my private git repositories. But... can anyone recommend a web front end? It doesn't need to be as fancy as github but it does need to parse markdown as all my documentation is in markdown. Thanks for suggestions. Preferably something that "just works" with CentOS 7. -=- What would be fantastic is if someone made some kind of federation type service similar to how Mastodon works that lets public git repositories that opt in be found without needing to be on a centralized server. But I doubt that currently exists.

7 7

can you rpm rebuild R-core-3.5.0-1.el7.x86_64 from epel-testing..
by lejeczek 07 Jun '18

07 Jun '18

..successfully? many thanks, L.

1 0

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