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 | # Redirect output to a log file |
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18 | exec >>/var/log/athena-upgrade 2>&1 |
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19 | echo "Starting upgrade at $(date)" |
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20 | |
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21 | DEBUG=0 |
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22 | MAYBE="" |
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23 | if [ "$1" = "--debug" ]; then |
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24 | DEBUG=1 |
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25 | MAYBE=echo |
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26 | fi |
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27 | |
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28 | UPGRADE_TO_TESTING=no |
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29 | UPGRADE_ANYWAY=no |
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30 | [ -f /etc/default/debathena-auto-update ] && . /etc/default/debathena-auto-update |
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31 | |
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32 | if [ $DEBUG -eq 1 ]; then |
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33 | UPGRADE_TO_TESTING=yes |
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34 | UPGRADE_ANYWAY=yes |
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35 | fi |
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36 | |
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37 | # Not supported on Debian |
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38 | if [ "$(lsb_release -si)" != "Ubuntu" ]; then |
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39 | debug "Only supported on Ubuntu.". |
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40 | exit 0 |
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41 | fi |
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42 | |
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43 | # Skip other sanity checks in debug mode |
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44 | if [ $DEBUG -ne 1 ]; then |
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45 | # Only run this on cluster |
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46 | if [ "$(machtype -L)" != "debathena-cluster" ] && \ |
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47 | [ "$UPGRADE_ANYWAY" != "yes" ]; then |
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48 | debug "Not a cluster machine and UPGRADE_ANYWAY != yes.". |
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49 | exit 0 |
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50 | fi |
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51 | |
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52 | # Bail if someone is logged in (stolen from auto-update) |
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53 | ttys=$(w -h -s | awk '{print $2}') |
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54 | for tty in $ttys; do |
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55 | pids=$(ps --no-heading -j -t "$tty" 2>/dev/null \ |
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56 | | awk '($1 == $3) {print $1}') |
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57 | if [ -n "$pids" ]; then |
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58 | debug "Users logged in, won't continue." |
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59 | debug "PIDs: $pids" |
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60 | exit 0 |
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61 | fi |
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62 | done |
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63 | # screen processes count as logins. |
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64 | if pgrep '^screen' > /dev/null; then |
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65 | debug "Screen processes found, won't continue." |
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66 | exit 0 |
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67 | fi |
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68 | fi |
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69 | |
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70 | CLUSTERINFO=`getcluster -b $(lsb_release -sr)` |
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71 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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72 | eval $CLUSTERINFO |
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73 | if [ ! -z "$NEW_PRODUCTION_RELEASE" ]; then |
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74 | debug "Taking new production release: $NEW_PRODUCTION_RELEASE" |
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75 | NEWCLUSTER=`getcluster -b $NEW_PRODUCTION_RELEASE` |
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76 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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77 | eval $NEWCLUSTER |
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78 | elif [ ! -z "$NEW_TESTING_RELEASE" ] && \ |
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79 | [ "$UPGRADE_TO_TESTING" = "yes" ]; then |
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80 | debug "Taking new testing release: $NEW_TESTING_RELEASE" |
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81 | NEWCLUSTER=`getcluster -b $NEW_TESTING_RELEASE` |
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82 | [ $? != 0 ] && complain "Failed to get clusterinfo" && exit 1 |
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83 | eval $NEWCLUSTER |
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84 | else |
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85 | debug "No new releases." |
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86 | exit 0 |
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87 | fi |
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88 | if [ "$(lsb_release -sc)" = "$UBUNTU_RELEASE" ]; then |
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89 | complain "Tried to upgrade to already running release; shouldn't happen" |
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90 | exit 1 |
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91 | fi |
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92 | debug "OK, trying to upgrade to $UBUNTU_RELEASE" |
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93 | |
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94 | # That's a space and then a tab inside the brackets |
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95 | if egrep -q '^flags[ ].* lm( |$)' /proc/cpuinfo; then |
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96 | arch=amd64 |
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97 | else |
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98 | arch=i386 |
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99 | fi |
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100 | debug "Arch: $arch" |
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101 | IPADDR=`ifconfig eth0 |perl -ne'/^\s+inet addr:([\d\.]+)/ && print $1'` |
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102 | if [ -z "$IPADDR" ]; then |
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103 | complain "Couldn't get IP address from ifconfig!" |
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104 | exit 0 |
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105 | fi |
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106 | debug "Using IPADDR=$IPADDR" |
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107 | $MAYBE mkdir /h |
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108 | $MAYBE cd /h |
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109 | $MAYBE wget -N http://debathena.mit.edu/net-install/${UBUNTU_RELEASE}/${arch}/initrd.gz |
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110 | $MAYBE wget -N http://debathena.mit.edu/net-install/${UBUNTU_RELEASE}/${arch}/linux |
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111 | # This is just the guts of the hackboot script: |
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112 | dkargs="DEBCONF_DEBUG=5" |
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113 | kargs="netcfg/get_hostname= locale=en_US console-setup/layoutcode=us \ |
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114 | interface=auto \ |
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115 | url=http://18.9.60.73/installer/${UBUNTU_RELEASE}/debathena.preseed \ |
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116 | debathena/clusterforce=yes debathena/clusteraddr=$IPADDR --" |
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117 | debug "Would execute kexec with --append=\"$dkargs $kargs\"" |
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118 | if [ $DEBUG -eq 1 ]; then |
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119 | exit 0 |
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120 | fi |
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121 | /sbin/kexec -l linux --append="$dkargs $kargs" --initrd=initrd.gz \ |
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122 | && sleep 3 && chvt 1 && sleep 2 && /sbin/kexec -e |
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123 | complain "Failed to kexec." |
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124 | exit 1 |
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