iankelling.org Git - automated-distro-installer/blob - myfai-chboot-local

   1 #!/bin/bash
   2 # note, this script gets piped to bash, so cant cd to current dir
   3
   4 [[ $EUID == 0 ]] || exec sudo "${BASH_SOURCE}" "$@"
   5
   6 set -eE -o pipefail
   7 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   8
   9 kgped16=false
  10 bond=false
  11 fai_action=install
  12 fai_reboot_arg=,reboot
  13 while [[ $1 == -* ]]; do
  14   case $1 in
  15     -h|--help)
  16       echo "see help from myfai-chboot"
  17       exit 0
  18       ;;
  19     -S)
  20       fai_action=sysinfo
  21       fai_reboot_arg=
  22       shift
  23       ;;
  24     -i) #inventory
  25       fai_action=inventory
  26       fai_reboot_arg=
  27       shift
  28       ;;
  29     -k)
  30       kgped16=true
  31       shift
  32       ;;
  33     -b)
  34       bond=true
  35       shift
  36       ;;
  37     --no-r)
  38       fai_reboot_arg=
  39       shift
  40       ;;
  41   esac
  42 done
  43
  44 pre="${0##*/}:"
  45 m() { printf "$pre %s\n"  "$*"; "$@"; }
  46 e() { printf "$pre %s\n"  "$*"; }
  47 err() { echo "[$(date +'%Y-%m-%d %H:%M:%S%z')]: $pre: $*" >&2; }
  48
  49 host=$1
  50
  51
  52 rm -f /srv/tftp/fai/pxelinux.cfg/*
  53 if [[ ! $1 ]]; then
  54   echo "$0: clearing pxe config and exiting"
  55   exit 0
  56 fi
  57
  58 # somewhat duplicated in brc hostip()
  59 case $host in
  60   default) : ;;
  61   [0-9:])
  62     hostip=$host
  63     ;;
  64   *)
  65     hostip=$(getent ahostsv4 "$host" | awk '{ print $1 }' | head -n1)
  66     ;;
  67 esac
  68
  69 if [[ $hostip ]]; then
  70
  71   # assuming ipv4, or else we might need to deal with multiple addresses
  72   # in an ipv4 + ipv6 network.
  73   my_ip=$(ip -4 route get $hostip | sed -nr 's,^.*src\s+(\S+).*,\1,p')
  74   if [[ ! $my_ip || $my_ip =~ [[:space:]] ]]; then
  75     echo "$0: error: failed to get \$my_ip, got: $my_ip"
  76     exit 1
  77   fi
  78 else
  79   my_ip=$(ip r show default | sed -r 's/.*via ([^ ]*).*/\1/' | head -n1)
  80 fi
  81
  82 if [[ $host == default ]]; then
  83   ip='*'
  84 elif [[ $host == [0-9]*.[0-9]*.[0-9]*.[0-9]* ]]; then
  85   ip=$host/32
  86 else
  87   type -t host &>/dev/null || apt-get -y install dnsutils
  88   ip=$(host $host | sed -rn 's/^\S+ has address //p;T;q' ||:)
  89   if [[ ! $ip || $ip =~ [[:space:]] ]]; then
  90     echo "$0: error: failed to get \$ip, got: $ip"
  91     exit 1
  92   fi
  93   ip=$ip/32
  94   echo "$0: found ip of $host: $ip"
  95 fi
  96
  97 if modprobe nfsd &>/dev/null; then
  98   std_arg="-u nfs://faiserver/srv/fai/config"
  99   # nfsv4 wont do rw with overlayfs yet
 100   # https://lists.uni-koeln.de/pipermail/linux-fai/2017-March/011641.html
 101   root_arg="$my_ip:/srv/fai/nfsroot:vers=3"
 102   # fai-setup without -e sets the ip to the local_ip/local_network, eg 192.168.1.3/24
 103   # I restrict it to one ip as simple but imperfect access control.
 104
 105   # we may chattr +i /etc/exports if we dun want it modified
 106   # for example, if we made these exports more widely available
 107   # while doing multiple installs or a recovery.
 108   if [[ -w /etc/exports ]]; then
 109     sed -ri --follow-symlinks '\%^/srv/fai/%d' /etc/exports
 110     cat >>/etc/exports <<EOF
 111 /srv/fai/config $ip(async,ro,no_subtree_check,no_root_squash)
 112 /srv/fai/nfsroot $ip(async,ro,no_subtree_check,no_root_squash)
 113 EOF
 114     exportfs -ra
 115   fi
 116   systemctl start nfs-server # assumes recent os
 117 else
 118   std_arg="-u http://faiserver:8080/config.tar.gz"
 119   root_arg="live:http://faiserver:8080/squash.img"
 120   /a/exe/web-conf -i -p 8080 - apache2 faiserver <<EOF
 121 <Location />
 122     Deny from all
 123     Allow from $ip
 124 </Location>
 125 EOF
 126 fi
 127
 128
 129
 130 # man page doesn't explain this, but this deletes & thus disables
 131 # all chboot systems.
 132 m fai-chboot -iv $std_arg default # set it to default to get a val out of it next
 133 kernel=$(fai-chboot -L '^default$' | awk '{print $3}')
 134 default_k_args=$(fai-chboot -L '^default$' | \
 135                    sed -r "s/^(\S+\s+){3}(.*)/\2/")
 136 # example of default_k_args
 137 # initrd=initrd.img-3.16.0-4-amd64 ip=dhcp root=192.168.1.3:/srv/fai/nfsroot FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config FAI_ACTION=install
 138
 139 # https://wiki.archlinux.org/index.php/Solid_state_drive#Resolving_NCQ_errors
 140 # currently on needed on d16 samsung 870 qvo, but better to have this
 141 # and not wait for more conditions where its needed.
 142 #k_args=(FAI_ACTION=$fai_action libata.force=noncq ifname:bootnet0:08:60:6e:10:f0:fe ifname:bootnet1:08:60:6e:10:f0:98 bond=bond0:bootnet0,bootnet1:mode=balance-rr)
 143 #k_args=(FAI_ACTION=$fai_action libata.force=noncq ifname:bootnet0:08:60:6e:10:f0:fe biosdevname=0 bootdev=bootnet0)
 144 k_args=(FAI_ACTION=$fai_action libata.force=noncq)
 145 if $kgped16; then
 146   k_args+=(console=tty0 console=ttyS0,115200)
 147 fi
 148
 149 for arg in $default_k_args; do
 150   case $arg in
 151     # default root arg is /srv/fai/nfsroot
 152     root=*) k_args+=(root=$root_arg) ;;
 153     # note: this works to only dhcp on one interface: ip=eth0:dhcp
 154     ip=*)
 155       if $bond; then
 156         k_args+=("bond=bond0:eth0,eth1:mode=balance-rr ip=bond0:dhcp")
 157       else
 158         k_args+=($arg)
 159       fi
 160       ;;
 161     *) k_args+=($arg) ;;
 162   esac
 163 done
 164 rm -f /srv/tftp/fai/pxelinux.cfg/*
 165 m fai-chboot -k "${k_args[*]}" -v -f verbose,sshd,createvt$fai_reboot_arg $std_arg $kernel "$host"
 166
 167 # this is needed for autodiscover iso. i'm not sure, it might override
 168 # the fai-chboot method of setting this, i'm not sure.
 169 echo FAI_ACTION=$fai_action >> /srv/fai/config/class/LAST.var