1 | #!/bin/bash |
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2 | # |
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3 | # This is designed to be called from cron |
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4 | |
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5 | debug() { |
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6 | [ $DEBUG -eq 1 ] && echo "DEBUG: $*" |
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7 | } |
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8 | |
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9 | complain() { |
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10 | if [ $DEBUG -eq 1 ]; then |
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11 | echo "ERROR: $*" |
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12 | else |
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13 | logger -t "athena-auto-upgrade" -p user.notice "$*" |
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14 | fi |
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15 | } |
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16 | |
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17 | DEBUG=0 |
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18 | MAYBE="" |
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19 | if [ "$1" = "--debug" ]; then |
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20 | DEBUG=1 |
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21 | MAYBE=echo |
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22 | else |
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23 | # Redirect output to a log file |
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24 | # Unless we're in debug mode |
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25 | exec >>/var/log/athena-upgrade 2>&1 |
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26 | fi |
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27 | |
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28 | echo "Starting upgrade at $(date)" |
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29 | |
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30 | |
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31 | UPGRADE_TO_TESTING=no |
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32 | UPGRADE_ANYWAY=no |
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33 | [ -f /etc/default/debathena-auto-update ] && . /etc/default/debathena-auto-update |
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34 | |
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35 | if [ $DEBUG -eq 1 ]; then |
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36 | UPGRADE_TO_TESTING=yes |
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37 | UPGRADE_ANYWAY=yes |
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38 | fi |
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39 | |
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40 | # Not supported on Debian |
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41 | if [ "$(lsb_release -si)" != "Ubuntu" ]; then |
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42 | debug "Only supported on Ubuntu.". |
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43 | exit 0 |
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44 | fi |
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45 | |
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46 | # Skip other sanity checks in debug mode |
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47 | if [ $DEBUG -ne 1 ]; then |
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48 | # Only run this on cluster |
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49 | if [ "$(machtype -L)" != "debathena-cluster" ] && \ |
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50 | [ "$UPGRADE_ANYWAY" != "yes" ]; then |
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51 | debug "Not a cluster machine and UPGRADE_ANYWAY != yes.". |
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52 | exit 0 |
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53 | fi |
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54 | |
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55 | # Bail if someone is logged in (stolen from auto-update) |
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56 | ttys=$(w -h -s | awk '{print $2}') |
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57 | for tty in $ttys; do |
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58 | pids=$(ps --no-heading -j -t "$tty" 2>/dev/null \ |
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59 | | awk '($1 == $3) {print $1}') |
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60 | if [ -n "$pids" ]; then |
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61 | debug "Users logged in, won't continue." |
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62 | debug "PIDs: $pids" |
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63 | exit 0 |
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64 | fi |
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65 | done |
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66 | # screen processes count as logins. |
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67 | if pgrep '^screen' > /dev/null; then |
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68 | debug "Screen processes found, won't continue." |
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69 | exit 0 |
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70 | fi |
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71 | fi |
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72 | |
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73 | CLUSTERINFO=`getcluster -b $(lsb_release -sr)` |
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74 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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75 | eval $CLUSTERINFO |
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76 | if [ ! -z "$NEW_PRODUCTION_RELEASE" ]; then |
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77 | debug "Taking new production release: $NEW_PRODUCTION_RELEASE" |
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78 | NEWCLUSTER=`getcluster -b $NEW_PRODUCTION_RELEASE` |
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79 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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80 | eval $NEWCLUSTER |
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81 | elif [ ! -z "$NEW_TESTING_RELEASE" ] && \ |
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82 | [ "$UPGRADE_TO_TESTING" = "yes" ]; then |
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83 | debug "Taking new testing release: $NEW_TESTING_RELEASE" |
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84 | NEWCLUSTER=`getcluster -b $NEW_TESTING_RELEASE` |
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85 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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86 | eval $NEWCLUSTER |
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87 | else |
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88 | debug "No new releases." |
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89 | exit 0 |
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90 | fi |
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91 | if [ "$(lsb_release -sc)" = "$UBUNTU_RELEASE" ]; then |
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92 | complain "Tried to upgrade to already running release; shouldn't happen" |
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93 | exit 1 |
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94 | fi |
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95 | debug "OK, trying to upgrade to $UBUNTU_RELEASE" |
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96 | |
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97 | # That's a space and then a tab inside the brackets |
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98 | if egrep -q '^flags[ ].* lm( |$)' /proc/cpuinfo; then |
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99 | arch=amd64 |
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100 | else |
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101 | arch=i386 |
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102 | fi |
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103 | debug "Arch: $arch" |
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104 | IPADDR= |
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105 | NETMASK= |
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106 | eval `ifconfig eth0 |perl -ne'/^\s+inet addr:([\d\.]+).*? Mask:([\d\.]+)/ && print "IPADDR=$1 NETMASK=$2"'` |
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107 | if [ -z "$IPADDR" ]; then |
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108 | complain "Couldn't get IPADDR from ifconfig!" |
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109 | exit 0 |
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110 | fi |
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111 | GATEWAY=`route -n | awk '/^0\.0\.0\.0/ { print $2 }'` |
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112 | debug "Using IPADDR=$IPADDR" |
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113 | debug "Using NETMASK=$NETMASK" |
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114 | debug "Using GATEWAY=$GATEWAY" |
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115 | if [ -n "$NETMASK" ] && [ -n "$GATEWAY" ]; then |
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116 | knetinfo="netcfg/get_hostname=$(hostname) \ |
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117 | netcfg/disable_dhcp=true \ |
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118 | netcfg/get_domain=mit.edu \ |
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119 | netcfg/get_nameservers=\"18.72.0.3 18.70.0.160\"\ |
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120 | netcfg/get_ipaddress=$IPADDR \ |
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121 | netcfg/get_netmask=$NETMASK \ |
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122 | netcfg/get_gateway=$GATEWAY \ |
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123 | netcfg/confirm_static=true" |
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124 | else |
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125 | knetinfo="netcfg/dhcp_timeout=60 netcfg/get_hostname=$(hostname)" |
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126 | fi |
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127 | |
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128 | $MAYBE mkdir /h |
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129 | $MAYBE cd /h |
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130 | $MAYBE wget -N http://debathena.mit.edu/net-install/${UBUNTU_RELEASE}/${arch}/initrd.gz |
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131 | $MAYBE wget -N http://debathena.mit.edu/net-install/${UBUNTU_RELEASE}/${arch}/linux |
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132 | case "$UBUNTU_RELEASE" in |
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133 | natty) |
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134 | # Sigh |
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135 | kbdcode="keyboard-configuration/layoutcode=us" |
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136 | ;; |
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137 | *) |
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138 | kbdcode="console-setup/layoutcode=us" |
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139 | ;; |
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140 | esac |
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141 | # This is just the guts of the hackboot script: |
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142 | dkargs="DEBCONF_DEBUG=5" |
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143 | kargs="$knetinfo locale=en_US $kbdcode \ |
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144 | interface=auto \ |
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145 | url=http://18.9.60.73/installer/${UBUNTU_RELEASE}/debathena.preseed \ |
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146 | debathena/pxetype=cluster --" |
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147 | if [ $(echo $kargs | wc -c) -ge 512 ]; then |
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148 | complain "kargs exceeds 512 bytes. That's not good." |
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149 | fi |
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150 | debug "Would execute kexec with --append=\"$dkargs $kargs\"" |
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151 | if [ $DEBUG -eq 1 ]; then |
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152 | exit 0 |
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153 | fi |
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154 | # Don't kexec -e here, because modern Ubuntu is unable to kexec while |
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155 | # X is running. Instead, kexec -l and let the init script take care of. |
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156 | # Until Oneiric, when this will probably stop working if kexec-tools hasn't |
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157 | # been Upstartified. |
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158 | /sbin/kexec -l linux --append="$dkargs $kargs" --initrd=initrd.gz |
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159 | if [ "`cat /sys/kernel/kexec_loaded`" != "1" ]; then |
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160 | echo "Hrm, looks like kexec -l didn't work. This upgrade might fail." |
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161 | fi |
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162 | reboot |
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163 | exit 0 |
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