source: trunk/debathena/config/auto-update/debian/athena-auto-update @ 24385

Revision 24385, 5.8 KB checked in by jdreed, 14 years ago (diff)
In auto-update: * Don't prefix the log message with the fqdn, that's syslog's job * Change the tag to "athena-auto-update"
Line 
1#!/bin/sh
2
3complain() {
4  logger -t "athena-auto-update" -p user.notice "$*"
5  updstatus="failed"
6  updmsg="$*"
7}
8
9save_success() {
10  updstatus="ok"
11  updmsg=$1
12}
13
14save_state() {
15  rm -f $statfile
16  echo "$updlast|$(date)|$updstatus|$updmsg" > $statfile
17
18
19maybe_reboot() {
20  if [ -f /var/run/reboot-required ]; then
21    # A package wants us to reboot the machine.  Do so if no one is
22    # logged in.  Be paranoid about stale utmp entries.
23    ttys=$(w -h -s | awk '{print $2}')
24    for tty in $ttys; do
25      pids=$(ps --no-heading -j -t "$tty" 2>/dev/null \
26             | awk '($1 == $3) {print $1}')
27      if [ -n "$pids" ]; then
28        return
29      fi
30    done
31    # screen processes count as logins.
32    if pgrep '^screen' > /dev/null; then
33      return
34    fi
35    save_state
36    reboot
37    exit
38  fi
39}
40
41if [ 0 != "$(id -u)" ]; then
42  echo "This script must be run as root." >&2
43  exit 1
44fi
45
46# Don't run updates during a cluster login.
47if [ -e /var/run/athena-login ]; then
48  exit 0
49fi
50
51# Avoid confusing the system by running two updates at once.
52pidfile=/var/run/athena-update.pid
53if [ -e $pidfile ]; then
54  if ! kill -0 "$(cat $pidfile)" 2>/dev/null; then
55    rm -f $pidfile
56  fi
57fi
58(set -o noclobber; echo $$ > $pidfile) 2>/dev/null || exit
59
60trap 'rm -f $pidfile' EXIT
61
62statfile="/var/lib/athena-update-status"
63updstatus="unknown"
64updmsg=""
65updlast=$(date)
66
67# Get the last successful update
68if [ -f $statfile ]; then
69    updlast=$(awk -F\| '{print $1;}' $statfile)
70fi
71
72# Make sure nothing expects input on stdin.
73exec </dev/null
74
75# Redirect further output to a log file.
76exec >>/var/log/athena-update 2>&1
77
78# Write a log header now and a footer at exit.
79# Also write a target for cluster's /etc/nologin symlink.
80echo "-----"
81echo "** Beginning Athena auto-update at $(date)"
82
83cat > /var/run/athena-nologin << NOLOGIN
84This system is currently taking software updates.
85Please log in to a different system.
86NOLOGIN
87
88finish() {
89    echo "** Ending Athena auto-update at $(date)"
90    echo "-----"
91    echo
92    rm -f $pidfile
93    rm -f /var/run/athena-nologin
94    save_state
95    exit
96}
97trap finish EXIT
98
99v() {
100  echo "** Running:" "$@"
101  "$@"
102}
103
104
105# Allow hesiod cluster info to specify the debathena apt release.
106# (Will do nothing if debathena-clusterinfo isn't installed.)
107[ -x /usr/sbin/save-cluster-info ] && v /usr/sbin/save-cluster-info
108cinfo=/var/run/athena-clusterinfo.sh
109slist=/etc/apt/sources.list.d/debathena.clusterinfo.list
110if [ -r "$cinfo" ] && ( [ ! -e "$slist" ] || [ -w "$slist" ] ); then
111  echo "** Updating debathena.clusterinfo.list"
112  [ -e "$slist" ] && rm "$slist"
113  dsource="$(egrep -h '^deb(-src)? http://debathena\.mit\.edu/apt ' /etc/apt/sources.list /etc/apt/sources.list.d/*.list 2>/dev/null | sort -u)"
114  if [ -n "$dsource" ]; then
115    (. $cinfo
116     echo "# This file is automatically updated by debathena-auto-update"
117     echo "# based on your Hesiod cluster information. If you want to"
118     echo "# make changes, do so in another file."
119     echo
120     case $APT_RELEASE in
121       production)  ;;
122       proposed)    echo "$dsource" | awk '$3 !~ /-/ {$3 = $3 "-proposed"; print}' ;;
123       development) echo "$dsource" | awk '$3 != /-/ {$3 = $3 "-proposed"; print}'
124                    echo "$dsource" | awk '$3 != /-/ {$3 = $3 "-development"; print}' ;;
125     esac
126    ) > $slist
127  else
128    echo "Never mind, I can't figure out which sources.list line is Debathena's"
129  fi
130else
131  echo "** Skipping update of debathena.clusterinfo.list"
132fi
133
134# Tell apt not to expect user input during package installation.
135export DEBIAN_FRONTEND=noninteractive
136
137# Configure any unconfigured packages (Trac #407)
138if ! v dpkg --configure -a; then
139  complain "Failed to configure unconfigured packages."
140  exit
141fi 
142
143# A recently configured package may want a reboot
144save_success "Rebooted after dpkg --configure -a"
145maybe_reboot
146
147# Update the aptitude cache.
148if ! v aptitude --quiet --assume-yes update; then
149  complain "aptitude update failed"
150  exit
151fi
152
153# Exit quietly (except for perhaps rebooting) if there are no upgrades
154# to take.
155pattern='^0 packages upgraded, 0 newly installed, 0 to remove'
156if v aptitude --simulate --assume-yes full-upgrade | grep -q "$pattern"; then
157  echo "Nothing to do!"
158  save_success "No updates"
159  maybe_reboot
160  exit
161fi
162
163# Download packages first.
164if ! v aptitude --quiet --assume-yes --download-only full-upgrade; then
165  complain "download failed"
166  exit
167fi
168
169# If the debathena-reactivate package is installed, call into the
170# login snapshot script to create a root snapshot for the next update.
171if [ -x /usr/sbin/athena-login-snapshot ]; then
172  echo "** Creating root snapshot"
173  /usr/sbin/athena-login-snapshot update-start
174fi
175
176# Perform the update.  In some corner cases, aptitude might decide
177# that the best course of action is to remove the Debathena
178# metapackage, so be paranoid about that.
179v aptitude --quiet --assume-yes keep-all
180v aptitude --quiet --assume-yes --download-only dist-upgrade
181if result=$(aptitude -F "%p" search '~i!~VTARGET(^debathena-cluster$ | ^debathena-workstation$ | ^debathena-login$ | ^debathena-standard$ | ^openafs-modules-~D^linux-image-)')
182  [ -n "$result" ]; then
183  echo "** metapackages would be removed by the update, aborting:" $result
184  v aptitude --quiet --assume-yes keep-all
185  complain "metapackages would be removed by update:" $result
186elif result=$(aptitude -F "%p" search '~b')
187  [ -n "$result" ]; then
188  echo "** packages would be broken by the update, aborting:" $result
189  v aptitude --quiet --assume-yes keep-all
190  complain "packages would be broken by update:" $result
191else
192  v aptitude --quiet --assume-yes install
193  # Successful update, reset $updlast
194  updlast=$(date)
195  save_success "Successful update"
196fi
197
198# Finally, update the apt-file cache
199v apt-file update
200
201if [ -x /usr/sbin/athena-login-snapshot ]; then
202  echo "** Cleaning up root snapshot"
203  /usr/sbin/athena-login-snapshot update-end
204fi
205
206maybe_reboot
207exit
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