iankelling.org Git - automated-distro-installer/blob - fai/config/scripts/GRUB_PC/11-iank

   1 #!/bin/bash -x
   2
   3 set -eE -o pipefail
   4 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   5
   6 if [[ $EUID != 0 ]]; then
   7   echo "$0: error: expected to be root."
   8   exit 1
   9 fi
  10
  11 if ! type -t fcopy &>/dev/null; then
  12   sudo apt-get -y install fai-client
  13 fi
  14
  15 if [[ -e /a/bin/fai/fai-wrapper ]]; then
  16   chroot() {
  17     shift
  18     "$@"
  19   }
  20 fi
  21
  22
  23
  24 # -r = recursive
  25 # -i = ignore non-matching class warnings, always exit 0
  26 # -B = no backup files
  27 fcopy -riBM /boot
  28 # this is also done by FABASE/10-misc by default.
  29 fcopy -riBM /root
  30
  31
  32 src=$FAI/distro-install-common/shadow
  33 dst=/q/root/shadow
  34 if [[ ! -e $dst && -e $src ]]; then
  35   # outside of fai context, we skip this
  36   mkdir -p $dst
  37   mount -o bind $src $dst
  38 fi
  39
  40 $FAI/distro-install-common/end
  41 if ifclass VOL_STRETCH_BOOTSTRAP; then
  42   fcopy -riM /etc/systemd/system
  43   chroot $FAI_ROOT bash <<'EOFOUTER'
  44 systemctl enable fai_check.service
  45 EOFOUTER
  46   exit 0 # avoid unnecessary stuff in bootstrap vol
  47 fi
  48
  49
  50 # these get copied in an earlier stage by fai, but leaving it here since
  51 # I run this as a single post-fai script to update things that have changed.
  52 fcopy -riBM /etc/apt
  53 # outside of fai, this seems to regularly lead to
  54 # E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
  55 # so add a sleep. 1 sec is probably way more than needed.
  56 sleep 1
  57 f=$FAI_ROOT/var/cache/apt/pkgcache.bin
  58 if [[ ! -r $f ]] || (( $(( $(date +%s) - $(stat -c %Y $f ) )) > 60*60*2 )); then
  59   i=0
  60   while fuser $FAI_ROOT/var/lib/dpkg/lock &>/dev/null; do
  61     sleep 1
  62     i=$(( i+1 ))
  63     if (( i > 300 )); then
  64       echo "error: timed out waiting for /var/lib/dpkg/lock" >&2
  65       exit 1
  66     fi
  67     $ROOTCMD apt-get update
  68   done
  69 fi
  70
  71
  72
  73 #### misc configurations
  74 chroot $FAI_ROOT bash <<'EOFOUTER'
  75 if getent group systemd-journal >/dev/null; then
  76   # makes the journal be saved to disk.
  77   mkdir -p /var/log/journal
  78   chmod 755 /var/log/journal
  79 fi
  80 debconf-set-selections <<EOF
  81 kexec-tools kexec-tools/load_kexec boolean false
  82 EOF
  83 apt-get install -y pxe-kexec
  84
  85
  86 #### begin .ssh setup ###
  87 set -x
  88 set -eE -o pipefail
  89 mkdir -p /home/iank/.ssh
  90 f=/root/.ssh/authorized_keys
  91 if [[ -e $f ]]; then
  92    cp $f /home/iank/.ssh
  93 fi
  94 chown -R 1000:1000 /home/iank/.ssh
  95 chmod -R u=Xrw,og= /home/iank/.ssh
  96 rm -rf /root/.ssh
  97 # remove broken symlinks or the following cp will fail
  98 find /home/iank/.ssh -xtype l -exec rm '{}' \;
  99 cp -rL /home/iank/.ssh /root
 100 chown -R root:root /root/.ssh
 101 chmod 700 /root/.ssh
 102 # https://ticktockhouse.svbtle.com/my-obligatory-ubuntu-ssh-agent-post
 103 # systemctl --user is not available at fai time, so create the link ourselves
 104 d=/home/iank/.config/systemd/user/default.target.wants
 105 sudo -u iank mkdir -p $d
 106 sudo -u iank ln -sf /usr/lib/systemd/user/ssh-agent.service $d
 107 #### end .ssh setup ###
 108
 109
 110 ## duplicated in ssh-emacs-setup
 111 # done here so its setup earlier for convenience
 112 line='AcceptEnv INSIDE_EMACS BRC COLUMNS'
 113 f=/etc/ssh/sshd_config
 114 grep -xFq "$line" $f || tee -a $f <<<"$line"
 115
 116
 117 # default jessie groups + kvm, systemd-journal, adm
 118 for g in adm cdrom floppy sudo audio dip video plugdev netdev; do
 119   if getent gropu $g >/dev/null; then
 120     usermod -aG $g iank
 121   fi
 122 done
 123
 124 if getent group systemd-journal >/dev/null; then
 125   usermod -aG systemd-journal iank
 126 fi
 127
 128
 129 # this is usefull. Only thing reason I see this being disabled by default is
 130 # that a normal user can disrupt the system, eg cause a reboot.
 131 sed -i '$a kernel.sysrq=1
 132 /^kernel.sysrq=/d' /etc/sysctl.conf
 133 EOFOUTER
 134
 135
 136 if [[ $FAI_ACTION != dirinstall ]]; then
 137   # luks options, see man systemd-cryptsetup-generator
 138   # all i know is that with luks.crypttab=no, swap still timed out on boot.
 139   # and with rd.luks.crypttab=no, it works.
 140   if ifclass LINODE; then
 141     speed=19200
 142     cmdline="rd.luks.crypttab=no net.ifnames=0 console=ttyS0,${speed}n8"
 143   else
 144     speed=115200
 145     cmdline="rd.luks.crypttab=no net.ifnames=0 console=ttyS0,${speed}n8 console=tty0"
 146   fi
 147
 148   cat >$FAI_ROOT/etc/grub.d/40_custom <<EOF
 149 #!/bin/sh
 150 exec tail -n +3 \$0
 151 # This file provides an easy way to add custom menu entries.  Simply type the
 152 # menu entries you want to add after this comment.  Be careful not to change
 153 # the 'exec tail' line above.
 154
 155 # https://www.coreboot.org/Serial_console # tty
 156 # but removed unneeded stuff
 157
 158 serial --speed=$speed
 159 terminal_input --append  serial
 160 terminal_output --append serial
 161 EOF
 162
 163
 164   chroot $FAI_ROOT bash <<EOF
 165 set -eE -o pipefail
 166 # https://askubuntu.com/questions/33416/how-do-i-disable-the-boot-splash-screen-and-only-show-kernel-and-boot-text-inst
 167 # we remove quiet and splash, and all thats left is what we want
 168
 169 if grep -qF "$cmdline" /etc/default/grub; then
 170   # already set things, exit
 171   exit 0
 172 fi
 173 sed -ri 's/^ *GRUB_CMDLINE_LINUX_DEFAULT=.*/GRUB_CMDLINE_LINUX_DEFAULT="$cmdline"/' /etc/default/grub
 174 # on xenial, no grub is displayed at all. fix that.
 175 # found just by noticing this in the config file, and a
 176 # warning about it in error.log
 177 sed -i '/^ *GRUB_HIDDEN_TIMEOUT/d' /etc/default/grub
 178
 179 update-grub2
 180 EOF
 181 fi ##### end != dirinstall
 182
 183
 184 # reading through the groups that iank is in but user2 isn't,
 185 for g in plugdev audio video cdrom; do
 186   $ROOTCMD usermod -a -G $g user2
 187 done
 188
 189
 190
 191 ###### begin network setup ####
 192
 193 # use old names. the idea of them changing between boots has never
 194 # happened to me and I usually only have 1 wired or other type.
 195 # If I ever do need to care about it, I will.
 196 # Strangely this didn't work on kw, so I added kernel cmdline parameter.
 197 # https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/
 198 ln -sf /dev/null $target/etc/systemd/network/99-default.link
 199
 200 # use networkmanager if this host has wireless.
 201 if [[ $(iw dev) ]]; then
 202   chroot $FAI_ROOT bash <<EOF
 203 apt-get -y install network-manager
 204 EOF
 205
 206   # allow networkmanager to manage interfaces
 207   #https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1638842
 208   touch $target/etc/NetworkManager/conf.d/10-globally-managed-devices.conf
 209   # in a default desktop install, it looks like netplan creates this file under
 210   # run/NetworkManager/conf.d in early boot.
 211
 212   # By default, dns=default is set in etiona, and dns is just broken.
 213   # Maybe with resolvconf it would work, but theres no need for that.
 214   # https://wiki.gnome.org/Projects/NetworkManager/DNS
 215   cat >$target/etc/NetworkManager/conf.d/99-iank.conf <<'EOF'
 216 [main]
 217 dns=systemd-resolved
 218 EOF
 219
 220 else
 221   cat > $target/etc/network/interfaces <<-EOF
 222 # generated by FAI
 223 auto lo eth0
 224 iface lo inet loopback
 225 iface eth0 inet dhcp
 226 iface eth0 inet6 auto
 227 EOF
 228
 229   # previously had an else condition after
 230   #elif ifclass VM || ifclass LINODE; then
 231   # iface $NIC1 inet manual
 232   # iface br0 inet dhcp
 233   #   bridge_ports $NIC1
 234   #   bridge_stp off
 235   #   bridge_maxwait 0
 236   # however, on t9, on startup, br0, became
 237   # rename1 and didn't come up. i dunno why,
 238   # but the bridge is for vms that I rarely use,
 239   # so not bothering to figure it out.
 240
 241
 242 fi
 243
 244 rm -f $target/etc/resolv.conf
 245 ln -s ../run/systemd/resolve/stub-resolv.conf $target/etc/resolv.conf
 246
 247 if ifclass LINODE; then
 248   mkdir -p $target/etc/initramfs-tools/conf.d
 249   cat >$target/etc/initramfs-tools/conf.d/mine <<EOF
 250 # dhcp in initramfs doesn't work on linode. i dunno why, whatever.
 251 # man 5 initramfs.conf
 252 # /usr/share/doc/klibc-utils/README.ipconfig.gz
 253 # /usr/share/initramfs-tools/scripts/functions
 254 IP=$linode_ip::$linode_gw:255.255.255.0::eth0:off
 255 EOF
 256 fi
 257
 258 # I prefer to stick with ifup/down for now. a. networkd is not in its
 259 # own package, so cant use in other init systems. b. it works fine.
 260 chroot $FAI_ROOT bash <<EOF
 261 systemctl disable systemd-networkd.socket systemd-networkd networkd-dispatcher systemd-networkd-wait-online
 262 systemctl mask systemd-networkd.socket systemd-networkd networkd-dispatcher systemd-networkd-wait-online
 263 EOF
 264
 265 ##### end network setup  #####