CentOS 7 multilib 32bit + 64bit package bug?

LXD
1

I am pulling centos 7 image using command

lxc launch images:centos/7 centos75-base

but it seems it contains both 32bit i686 and 64bit x86_64 installed packages ? is that a bug ?

uname -m
x86_64

yum list \*.i686 | head -n50
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirror.dal10.us.leaseweb.net
 * extras: mirror.den1.denvercolo.net
 * updates: bay.uchicago.edu
Available Packages
ElectricFence.i686                       2.2.2-39.el7                    base   
GConf2.i686                              3.2.6-8.el7                     base   
GConf2-devel.i686                        3.2.6-8.el7                     base   
GeoIP.i686                               1.5.0-11.el7                    base   
GeoIP-devel.i686                         1.5.0-11.el7                    base   
ImageMagick.i686                         6.7.8.9-15.el7_2                base   
ImageMagick-c++.i686                     6.7.8.9-15.el7_2                base   
ImageMagick-c++-devel.i686               6.7.8.9-15.el7_2                base   
ImageMagick-devel.i686                   6.7.8.9-15.el7_2                base   
LibRaw.i686                              0.14.8-5.el7.20120830git98d925  base   
LibRaw-devel.i686                        0.14.8-5.el7.20120830git98d925  base   
LibRaw-static.i686                       0.14.8-5.el7.20120830git98d925  base   
ModemManager.i686                        1.6.10-1.el7                    base   
ModemManager-devel.i686                  1.6.10-1.el7                    base   
ModemManager-glib.i686                   1.6.10-1.el7                    base   
ModemManager-glib-devel.i686             1.6.10-1.el7                    base   
NetworkManager-glib.i686                 1:1.10.2-14.el7_5               updates
NetworkManager-glib-devel.i686           1:1.10.2-14.el7_5               updates
NetworkManager-libnm.i686                1:1.10.2-14.el7_5               updates
NetworkManager-libnm-devel.i686          1:1.10.2-14.el7_5               updates
ORBit2.i686                              2.14.19-13.el7                  base   
ORBit2-devel.i686                        2.14.19-13.el7                  base   
OpenEXR-devel.i686                       1.7.1-7.el7                     base   
OpenEXR-libs.i686                        1.7.1-7.el7                     base   
OpenIPMI.i686                            2.0.23-2.el7                    base   
OpenIPMI-devel.i686                      2.0.23-2.el7                    base   
OpenIPMI-libs.i686                       2.0.23-2.el7                    base   
PackageKit.i686                          1.1.5-2.el7.centos              updates
PackageKit-glib.i686                     1.1.5-2.el7.centos              updates
PackageKit-glib-devel.i686               1.1.5-2.el7.centos              updates
PackageKit-gtk3-module.i686              1.1.5-2.el7.centos              updates
PyQt4.i686                               4.10.1-13.el7                   base   
PyQt4-devel.i686                         4.10.1-13.el7                   base   
SDL.i686                                 1.2.15-14.el7                   base   
SDL-devel.i686                           1.2.15-14.el7                   base   
SDL-static.i686                          1.2.15-14.el7                   base   
a2ps.i686                                4.14-23.el7                     base   
abrt-devel.i686                          2.1.11-50.el7.centos            base   
abrt-gui-devel.i686                      2.1.11-50.el7.centos            base   
abrt-gui-libs.i686                       2.1.11-50.el7.centos            base   
abrt-libs.i686                           2.1.11-50.el7.centos            base   
accountsservice-devel.i686               0.6.45-7.el7                    base   
accountsservice-libs.i686                0.6.45-7.el7                    base   
adwaita-gtk2-theme.i686                  3.22.2-2.el7_5                  updates
2

I don’t know, would need to compare with a tranditional Centos7 install.
I don’t see any special handling in our image building that should cause this so it looks like it’s just the normal bootstrap process which resulted in those packages getting selected.

3

Usually default CentOS image for 64bit would only have x86_64 packages and images for 32bit would only have 32bit i686. Though I have come across some web hosts incorrectly offering multilib 32/64bit centos images. The fix is usually for 64bit image builds is to run yum -y remove \*.i686 during the build process to remove the incorrect 32bit ones.

I usually also set in /etc/yum.conf for 64bit centos in my LEMP stacks

exclude=*.i386 *.i586 *.i686

could be the case not sure if i have been use to using that exclude line that i usually don’t see multilib issues

so i could build my base centos 7 image with the following first

lxc exec centos75-base -- sed -i "s|plugins=1|plugins=1\nexclude=\*.i386 \*.i586 \*.i686|" /etc/yum.conf