iankelling.org Git - distro-setup/blob - system-status

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4
   5 # usage: runs 4 times every 15 seconds unless any args are passed, or we
   6 # are on battery power, then just runs once.
   7
   8 if [ -z "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   9
  10 source /a/bin/errhandle/err
  11 status_file=/dev/shm/iank-status
  12
  13 shopt -s nullglob
  14 shopt -s dotglob
  15
  16 verbose=false
  17 if [[ $1 ]]; then
  18   verbose=true
  19 fi
  20 v() {
  21   if $verbose; then
  22     printf "%s\n" "$*"
  23   fi
  24 }
  25 lo() { /usr/local/bin/log-once "$@"; }
  26
  27 write-status() {
  28   chars=("${first_chars[@]}")
  29
  30   glob=(/nocow/btrfs-stale/*)
  31   if [[ -e ${glob[0]} ]]; then
  32     chars+=("STALE!")
  33   fi
  34   glob=(/m/md/bounces/new/*)
  35   if [[ -e ${glob[0]} ]]; then
  36     chars+=("BOUNCE!")
  37     bouncemsg="message in /m/md/bounces/new"
  38   fi
  39   lo -1 bounce $bouncemsg
  40   glob=(/m/md/alerts/new/* /m/md/alerts/cur/*)
  41   if [[ -e ${glob[0]} ]]; then
  42     chars+=("ALERT!")
  43   fi
  44   if [[ -e /nocow/user/mailtest-failure ]]; then
  45     chars+=("MAILPING!")
  46   fi
  47
  48   qlen=$(/usr/sbin/exiqgrep -o 60 -c -b | awk '{print $1}')
  49   if ((qlen)); then
  50     chars+=("q $qlen")
  51   fi
  52
  53   cd /b/ds
  54   if ! make -q ~/.local/distro-begin || [[ $(<~/.local/distro-begin) != 0 ]]; then
  55     chars+=("DISTRO-BEGIN!")
  56   fi
  57
  58   if ! make -q ~/.local/distro-end || [[ $(<~/.local/distro-end) != 0 ]]; then
  59     chars+=("DISTRO-END!")
  60   fi
  61
  62   f=~/.local/conflink
  63   for _ in 1; do
  64     if [[ -e $f ]]; then
  65       now=$(date +%s)
  66       fsec=$(stat -c%Y $f)
  67       # the / 60 makes it 0-59 seconds less strict, +1 makes sure we
  68       # dont have any false positives.
  69       fmin=$(( (fsec - now ) / 60 + 1 ))
  70       fminplus=$(( fmin + 60*24 ))
  71       # Filesystem files get copied, so find any newer than the last run.
  72       # The rest are hueristics:
  73       # Given the last time we added a file in git, is that newer than the last conflink run.
  74       # Given new files not added to git, were they modified more recently than the last conflink? but,
  75       # push their modification time back by a day so we can develop them before needing to add them to git.
  76
  77       all_dirs=({/a/bin/ds,/p/c}{/filesystem,/machine_specific/$HOSTNAME/filesystem})
  78       # This part is copied from conflink
  79       for x in /p/c/machine_specific/*.hosts /a/bin/ds/machine_specific/*.hosts; do
  80         if grep -qxF $HOSTNAME $x; then all_dirs+=( ${x%.hosts} ); fi
  81       done
  82
  83       # just because i forget a lot, -mmin -NUM means files modified <= NUM minutes ago
  84       if (( $(date -d "$(git log --diff-filter=ACR --format=%aD -1)" +%s) > fsec )) || \
  85            [[ $(find ${all_dirs[@]} -mmin $fmin -type f -print -quit 2>/dev/null) ]]; then
  86         v conflink newer git or newer filesystem files
  87         chars+=("CONFLINK!")
  88         break
  89       fi
  90
  91       for d in /a/bin/distro-setup /p/c; do
  92         cd $d
  93         untracked=$(git ls-files -o --exclude-standard)
  94         if [[ $untracked && $(find $untracked -mmin $fminplus -type f -print -quit) ]]; then
  95           v conflink: untracked in $d
  96           chars+=("CONFLINK!")
  97           break
  98         fi
  99       done
 100
 101     fi
 102     if [[ ! -e $f || $(<$f) != 0 ]]; then
 103       v conflink: last run not found or failed
 104       chars+=("CONFLINK!")
 105       break
 106     fi
 107   done
 108
 109
 110   ## Clean the paniclog, but only up to 4 times per day, or else we
 111   ## should investigate.
 112   loglog=/tmp/panicloglog-$(date --rfc-3339=date)
 113   if [[ -s $loglog ]]; then
 114     spamcount=$(stat -c%s $loglog)
 115   else
 116     spamcount=0
 117   fi
 118   if (( spamcount <= 4 )); then
 119     if grep -q 'spam acl condition' /var/log/exim4/paniclog &>/dev/null; then
 120       printf . >>$loglog
 121     fi
 122     /a/bin/distro-setup/epanic-clean
 123   fi
 124
 125   if [[ -s /var/log/exim4/paniclog ]]; then
 126     chars+=("PANIC!")
 127     tail -n 20 /var/log/exim4/paniclog | lo -1 paniclog
 128   else
 129     lo -1 paniclog
 130   fi
 131
 132   source /a/bin/bash_unpublished/source-state
 133   if [[ $MAIL_HOST == "$HOSTNAME" ]]; then
 134     bbkmsg=
 135     if [[ $(systemctl is-active btrbk.timer) != active ]]; then
 136       chars+=("BTRBK.TIMER!")
 137       bbkmsg="btrbk.timer not enabled"
 138     fi
 139     lo -60 btrbk.timer $bbkmsg
 140
 141     ## check if last snapshot was within an hour
 142     vol=o
 143     # this section generally copied from btrbk scripts, but
 144     # this part modified to speed things up by about half a second.
 145     # I'm not sure if its quite as reliable, but it looks pretty safe.
 146     # Profiled it using time and also adding to the top of the file:
 147     # set -x
 148     # PS4='+ $(date "+%2N") '
 149     snaps=($(ls -1avdr /mnt/root/btrbk/$vol.20*|head -n1))
 150     now=$(date +%s)
 151     maxtime=0
 152     for s in ${snaps[@]}; do
 153       file=${s##*/}
 154       t=$(date -d $(sed -r  's/(.{4})(..)(.{5})(..)(.*)/\1-\2-\3:\4:\5/' <<<${file#$vol.}) +%s)
 155       if (( t > maxtime )); then
 156         maxtime=$t
 157       fi
 158     done
 159     if (( maxtime < now - 60*60 )); then
 160       chars+=("OLD-SNAPSHOT!")
 161       snapshotmsg="/o snapshot older than 1 hour"
 162     fi
 163     lo -1 old-snapshot $snapshotmsg
 164   fi
 165
 166   cat /a/bin/bash_unpublished/source-state >$status_file
 167
 168   if [[ ${chars[*]} ]]; then
 169     echo "ps_char=\"${chars[*]} \$ps_char\"" >>$status_file
 170   fi
 171
 172 }
 173 # use this if we want to do something just once per minute
 174 first_chars=()
 175
 176 power=true
 177 if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
 178   power=false
 179 fi
 180
 181 write-status
 182 if [[ $1 ]]; then
 183   cat $status_file
 184   exit 0
 185 fi
 186
 187 if ! $power; then
 188   exit 0
 189 fi
 190 for ((i=1; i<=3; i++)); do
 191   sleep 15
 192   write-status
 193 done