Tue, 27 May 2008

Experiments in Fedora 0x01

Running your own local yum repo isn't all that hard as it turns out.

1. Allow building as a non-root user.
   1. Make some important directories. I only care about powerpc packages, so I make the ppc and ppc64 directories, clearly if you use another architecture you should change that ;P

      mkdir -p /home/user/rpmbuild/fedora/{BUILD,SOURCES,SPECS,SRPMS,tmp,RPMS/{noarch,ppc,ppc64}}
      

   2. Now create a ~/.rpmmacros file. To use those directories you just created.

      %_topdir        /home/user/rpmbuild/fedora/
      %_builddir      %{_topdir}/BUILD
      %_rpmdir        %{_topdir}/RPMS
      %_specdir       %{_topdir}/SPECS
      %_srcrpmdir     %{_topdir}/SRPMS
      %_sourcedir     %{_topdir}/SOURCES/%{name}-%{version}-%{release}
      %_tmppath       %{_topdir}/tmp
      %_buildroot     %{_topdir}/%{_tmppath}/%{name}-%{version}-root
      %packager       user@example.com
      

      With this there you can rpm -i src.rpm files, and run rpmbuild commands to generate RPMS (binary and source). I intend to have a bunch of packages on the go at any time so I use the %_sourcedir macro, have one directory per %{name}-%{version}-%{release}. You could just as easily do:

      %_sourcedir     %{_topdir}/SOURCES
      

      It's easiest to decide upfront as changing will be a little cumbersome.
2. Make some RPMS. True this can be a little challenging at times but fortunately the packages I'm interested presented little challenge ... woot!
3. Fedora has a util for rummaging through RPMs and makeing the repodata files. It's called createrepo. So install that: yum install -y createrepo
4. I then moved all my locally built RPMS into a separate directory structure. I tried to make this look at least a little like real Fedora repos. Again I only care about powerpc, hence setting $basearch. You don't need to :). In case it isn't obvious I ran this script from the root directory of the repo (in my case /opt/yum).

   #!/bin/sh
   
   basearch=ppc
   releasever=9
   rpmbuild_base=/home/user/rpmbuild/fedora
   
   for i in local local-debuginfo local-source ; do
           d="$i/$releasever/$basearch"
           [ ! -d $d ] && mkdir -p $d
   done
   
   find $rpmbuild_base/RPMS/  -type f \
   	-exec /bin/cp {} ./local/$releasever/$basearch/. \;
   find $rpmbuild_base/SRPMS/ -type f \
   	-exec /bin/cp {} ./local-source/$releasever/$basearch/. \;
   find ./local/$releasever/$basearch/. -type f -name '*debug*' \
   	-exec /bin/mv {} ./local-debuginfo/$releasever/$basearch/. \;
   
   for i in local local-debuginfo local-source ; do
           cd "$i/$releasever/$basearch"
           /usr/bin/createrepo .
           cd -
   done
   

5. Setup apache to serve up that directory. This machine shouldn't need any other web services, so I just make / point at my /opt/yum directory

   NameVirtualHost *
   <VirtualHost *>
       ServerAdmin user@example.com
       DocumentRoot /opt/yum/
       ServerAlias host
       ServerName host.example.com
       ErrorLog /var/log/httpd/yum.repo-error_log
       CustomLog /var/log/httpd/yum.repo-access_log combined
   
       <Directory /opt/yum>
           Options Indexes
       </Directory>
   </VirtualHost>
   

6. Now create a yum config you use this new goodness.

   [local]
   name=local $releasever - $basearch
   baseurl=http://host.example.com/local/$releasever/$basearch/
   enabled=1
   gpgcheck=0
   
   [local-debuginfo]
   name=local $releasever - $basearch - Debug
   baseurl=http://host.example.com/local-debuginfo/$releasever/$basearch/
   enabled=1
   gpgcheck=0
   
   [local-source]
   name=local $releasever - $basearch - Source
   baseurl=http://host.example.com/local-source/$releasever/$basearch/
   enabled=1
   gpgcheck=0
   

7. If that all went well then:

   [user@host ~]$ yum repolist
   Loaded plugins: refresh-packagekit
   repo id              repo name                                 status
   fedora               Fedora 9 - ppc                            enabled
   fedora-debuginfo     Fedora 9 - ppc - Debug                    enabled
   fedora-source        Fedora 9 - Source                         enabled
   local                local 9 - ppc                             enabled
   local-debuginfo      local 9 - ppc - Debug                     enabled
   local-source         local 9 - ppc - Source                    enabled
   updates              Fedora 9 - ppc - Updates                  enabled
   updates-debuginfo    Fedora 9 - ppc - Updates - Debug          enabled
   updates-source       Fedora 9 - Updates Source                 enabled
   

   and debuginfo-install and yumdownloader should do the right things woot!

There are probabluy all sorts of other cool things you can do here but this is enought to keep a few local machines in sync :)

Update: Type fixes, and add note about installign createrepo

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