Re: [lmi] debian chroot in redhat

[Vadim Zeitlin]

On Thu, 3 Oct 2019 02:18:12 +0000 Greg Chicares <address@hidden> wrote:

GC> [root@ugolyok]/tmp# yum install nss-pem
GC> ...
GC> One of the configured repositories failed (Unknown),
GC> 
GC> Rerunning with the EPEL repository suppressed momentarily:
GC> 
GC> [root@ugolyok]/tmp# yum install --disablerepo=epel nss-pem       
GC> ...
GC> Warning: RPMDB altered outside of yum.
GC> ** Found 30 pre-existing rpmdb problem(s), 'yum check' output follows:
GC> coreutils-8.22-24.el7.x86_64 has missing requires of ncurses

 Are these warnings normal? I haven't seen either of them in my chroot.

GC> [root@ugolyok]/tmp# yum install -y debootstrap.noarch            
[...]
GC> Complete!
GC> 
GC> This seems most auspicious. Thanks much. I'm too tired to do any
GC> more tonight, but maybe tomorrow everything will just work.

 I certainly hope so, but I was still wondering why did it work for me and
Ilya, but not you. I must be missing something here because while nss-pem
is not installed as a dependency of anything:

        % rpm -q --whatrequires nss-pem
        no package requires nss-pem

it still got installed by yum automatically (in spite of not appearing in
"yum history" output directly), as I discovered by looking at
/var/log/yum.log. And knowing when it got installed, I could now do

        # yum history info 14
        Loaded plugins: fastestmirror, keys, protectbase
        Transaction ID : 14
        Begin time     : Wed Sep 25 01:05:53 2019
        Begin rpmdb    : 252:6b2578512ef18dbdd98b235b10bd6c374811ec0e
        End time       :            01:05:56 2019 (3 seconds)
        End rpmdb      : 254:f275cee23cf80de208ea6adface2a162f57ab129
        User           :  <zeitlin>
        Return-Code    : Success
        Command Line   : -y install curl
        Transaction performed with:
            Installed     rpm-4.11.3-35.el7.x86_64                      
installed
            Installed     yum-3.4.3-163.el7.centos.noarch               @base
            Installed     yum-plugin-fastestmirror-1.1.31-50.el7.noarch 
installed
        Packages Altered:
            Install     curl-7.29.0-54.el7.x86_64    @base
        Loading mirror speeds from cached hostfile
         * base: ftp.rezopole.net
         * centos-sclo-rh: centos.mirrors.ovh.net
         * centos-sclo-sclo: centos.mirrors.ovh.net
         * epel: www.mirrorservice.org
         * extras: centos.mirrors.ovh.net
         * updates: centos.quelquesmots.fr
        0 packages excluded due to repository protections
            Updated     libcurl-7.29.0-51.el7.x86_64 ?
            Update              7.29.0-54.el7.x86_64 @base
            Dep-Install nss-pem-1.0.3-7.el7.x86_64   @base
        history info

 And now, knowing this, I even understand why my command for finding the
reverse dependencies above didn't work: apparently we need to explicitly
specify the architecture. So:

        # rpm -q --whatrequires 'nss-pem(x86-64)'
        nss-3.36.0-7.el7_5.x86_64
        libcurl-7.29.0-54.el7.x86_64

does finally give the result I wanted. Strangely enough, architecture is
_not_ needed for libcurl itself:

        # rpm -q --whatrequires 'libcurl(x86-64)'
        no package requires libcurl(x86-64)
        # rpm -q --whatrequires 'libcurl'
        python-pycurl-7.19.0-19.el7.x86_64
        curl-7.29.0-54.el7.x86_64

So the only firm conclusion I can make is that I don't really understand
how do package specifications work in RedHat world.


 But, anyhow, the summary is that the required package should have been
installed as a dependency of curl and there is still the question about how
could you end up with curl but without nss-pem. However if your automated
chroot installation script contains "yum install -y curl", it should work.

 Regards,
VZ

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