src/dtc_install_centos

   1 #!/bin/sh
   2
   3 CACHEDIR="/var/cache/yum"      # where yum caches stuff -- is created as a subdir
   4                                # of the destination chroot
   5
   6 # FIXME perhaps after installation the script can modify the target machine's yum config to point to our Squid proxy
   7 #       or define http_proxy inside the machine.  that would make upgrades for customers much much faster.
   8 # better idea: instead of using a web cache, use a stash on the machine, we rsync the new RPMs into it once it's finished
   9 # we would need a mutex (flock or fcntl based?) that mutially excludes the critical section
  10 # the critical section is both the yum and the rsync process
  11 # we also need to rsync packages from the stash into the var cache on the vps, and a mutex to lock out if another yum is running, just as in the first scenario
  12 # cannot use a symlink because its chrooted for the duration of the process
  13 # at any case, the repo names for different distros need to be different, otherwise the caches will clash horribly
  14 # FIXME once that is done, we can stop using apt-proxy or apt-cacher
  15 # FIXME try to make it for suse, mandriva or any other rpm-based distro
  16
  17 YUMENVIRON="$1"                # where the yum config is generated and deployed
  18 INSTALLROOT="$2"               # destination directory / chroot for installation
  19
  20 if [ "${INSTALLROOT}" = "" -o ! -d "${INSTALLROOT}" -o "${YUMENVIRON}" = "" ] ; then
  21         echo "usage: centos-installer /yum/environment (will be created) /destination/directory (must exist)"
  22         echo "dest dir MUST BE an absolute path"
  23         exit 126
  24 fi
  25
  26 set -e
  27 set -x
  28
  29 which rpm >/dev/null 2>&1 || { echo "rpm is not installed.  please install rpm." ; exit 124 ; }
  30
  31 # sometimes when the RPM database is inconsistent, yum fails but exits with success status
  32 # we make sure the db is in good health
  33 mkdir -p /var/lib/rpm
  34 rpm --rebuilddb
  35
  36 # set distro ver
  37 releasever=6
  38
  39 # detect architecture
  40 ARCH=`uname -m`
  41 if [ "${ARCH}" = x86_64 ] ; then
  42         exclude="*.i386 *.i586 *.i686"
  43         basearch=x86_64
  44 elif [ "${ARCH}" = i686 ] ; then
  45         exclude="*.x86_64"
  46         basearch=i386
  47 else
  48         echo "Unknown architecture: ${ARCH} -- stopping centos-installer"
  49         exit 3
  50 fi
  51
  52 # make yum environment
  53
  54 mkdir -p ${YUMENVIRON}/pluginconf.d ${YUMENVIRON}/repos.d ${CACHEDIR} ${INSTALLROOT}/var/log
  55
  56 # In case the folder is not there:
  57 mkdir -p /var/lib/rpm
  58
  59 # configure yum:
  60
  61 cat > "${YUMENVIRON}/yum.conf" << EOF
  62 [main]
  63 reposdir=$YUMENVIRON/repos.d
  64 pluginconfpath=$YUMENVIRON/pluginconf.d
  65 cachedir=$CACHEDIR
  66 installroot=$INSTALLROOT
  67 exclude=$exclude
  68 keepcache=1
  69 #debuglevel=4
  70 #errorlevel=4
  71 pkgpolicy=newest
  72 distroverpkg=centos-release
  73 tolerant=1
  74 exactarch=1
  75 obsoletes=1
  76 gpgcheck=1
  77 plugins=1
  78 metadata_expire=1800
  79 EOF
  80
  81 cat > "${YUMENVIRON}/pluginconf.d/installonlyn.conf" << EOF
  82 [main]
  83 enabled=1
  84 tokeep=5
  85 EOF
  86
  87 cat > "${YUMENVIRON}/repos.d/CentOS-Base.repo" << EOF
  88 [base]
  89 name=CentOS-6 - Base
  90 #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
  91 mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
  92 gpgcheck=1
  93 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
  94
  95 [updates]
  96 name=CentOS-6 - Updates
  97 #baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
  98 mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
  99 gpgcheck=1
 100 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 101
 102 [extras]
 103 name=CentOS-6 - Extras
 104 #baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
 105 mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
 106 gpgcheck=1
 107 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 108
 109 [centosplus]
 110 name=CentOS-6 - Plus
 111 #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
 112 mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
 113 gpgcheck=1
 114 gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6
 115 EOF
 116
 117 # unleash yum
 118
 119 export LANG=C
 120 exec yum -c "${YUMENVIRON}/yum.conf" -y install coreutils basesystem centos-release yum-basearchonly initscripts upstart nano nano yum wget which passwd joe screen