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 "$BASH_VERSION" ]; then echo "error: shell is not bash" >&2; exit 1; fi
   9
  10 source /a/bin/errhandle/err
  11 status_file=/dev/shm/iank-status
  12
  13 shopt -s nullglob
  14 shopt -s dotglob
  15 shopt -s extglob
  16
  17 for p in ~/.gem/ruby/*/bin; do
  18   PATH="$PATH:$p"
  19 done
  20
  21
  22 verbose=false
  23 if [[ $1 ]]; then
  24   verbose=true
  25 fi
  26 v() {
  27   if $verbose; then
  28     printf "%s\n" "$*"
  29   fi
  30 }
  31 # log-once COUNT NAME [MESSAGE]
  32 lo() {
  33   /usr/local/bin/log-once "$@" | ifne mail -s "$HOSTNAME: system-status $2" root@localhost
  34 }
  35
  36 write-status() {
  37   chars=("${first_chars[@]}")
  38
  39   # clock us out in timetrap if are idle too long
  40   if [[ -e /p/.timetrap.db ]]; then
  41     export DISPLAY=:0
  42     if type -p xprintidle &>/dev/null && xidle=$(xprintidle 2>/dev/null); then
  43       if [[ $xidle == [0-9]* ]]; then
  44         sheet=$(sqlite3 /p/.timetrap.db "select sheet from entries where end is NULL;")
  45         idle=300000
  46         if [[ $sheet == w ]]; then
  47           idle=900000
  48         fi
  49         if [[ $sheet && $xidle -gt $idle ]]; then
  50           timetrap out
  51         fi
  52       fi
  53     fi
  54   fi
  55
  56
  57   # this is for tracking dns over tls issue, which
  58   # fixvpndns() in brc2 fixes.
  59   stat=$(resolvectl dnsovertls tunfsf 2>/dev/null ||: )
  60   read _ _ _ istls <<<"$stat"
  61   case $istls in
  62     no) : ;;
  63     *)
  64       printf "%s\n" "$istls" | ts >> /tmp/istls.log
  65       chars+=("T:$istls")
  66       ;;
  67   esac
  68
  69
  70   if pgrep -G iank -u iank -f 'emacs --daemon' &>/dev/null; then
  71     emacsfiles="$(emacsclient --eval "$(cat /usr/local/bin/unsaved-buffers.el)"| sed '/^"nil"$/d;s/^"(/E: /;s/)"$//')"
  72     if [[ $emacsfiles ]]; then
  73       chars+=("$emacsfiles")
  74     fi
  75   fi
  76
  77   glob=(/nocow/btrfs-stale/*)
  78   if [[ -e ${glob[0]} ]]; then
  79     chars+=("STALE")
  80   fi
  81   if [[ $(find /var/mail -type f \! -empty -print -quit) ]]; then
  82     var_mail_msg="message in /var/mail"
  83   fi
  84   lo -1 var_mail $var_mail_msg
  85   glob=(/m/md/bounces/new/*)
  86   if [[ -e ${glob[0]} ]]; then
  87     chars+=("BOUNCE")
  88     bouncemsg="message in /m/md/bounces/new"
  89   fi
  90   lo -1 bounce $bouncemsg
  91   # emails without the S (seen) flag. this only checks the last flag,
  92   # but its good enough for me.
  93   glob=(/m/md/alerts/{new,cur}/!(*,S))
  94   if [[ -e ${glob[0]} ]]; then
  95     chars+=("A")
  96   fi
  97   tmp=(/var/local/cron-errors/mailtest-check*)
  98   if (( ${#tmp[@]} )); then
  99     chars+=("MAILPING")
 100   fi
 101   tmp=(/var/local/cron-errors/mailtest-slow*)
 102   if (( ${#tmp[@]} )); then
 103     chars+=("SPAMD")
 104   fi
 105
 106   # early in install process, we dont have permission yet for exiqgrep
 107   qlen=$(/usr/sbin/exiqgrep -o 600 -c -b | awk '{print $1}') ||:
 108   if ((qlen)); then
 109     qmsg="queue length $qlen"
 110     chars+=("q $qlen")
 111   fi
 112   case $HOSTNAME in
 113     # No point in emailing about the mailq on a host where we don't
 114     # check email.
 115     $MAIL_HOST|bk)
 116       lo -120 qlen $qmsg
 117       ;;
 118   esac
 119
 120   begin=false
 121   if ! make -C /b/ds -q ~/.local/distro-begin || [[ $(<~/.local/distro-begin) != 0 ]]; then
 122     begin=true
 123   fi
 124
 125   end=false
 126   if ! make -C /b/ds -q ~/.local/distro-end || [[ $(<~/.local/distro-end) != 0 ]]; then
 127     end=true
 128   fi
 129
 130   # these conditions are so we dont have an overly verbose prompt
 131   if $begin && $end; then
 132     chars+=("D")
 133   elif $begin; then
 134     chars+=("DB")
 135   elif $end; then
 136     chars+=("DE")
 137   else
 138     f=~/.local/conflink
 139     # shellcheck disable=SC2043
 140     for _ in 1; do
 141       if [[ -e $f ]]; then
 142         now=$(date +%s)
 143         fsec=$(stat -c%Y $f)
 144         # the / 60 makes it 0-59 seconds less strict, +1 to help make sure we
 145         # dont have any false positives.
 146         fmin=$(( (fsec - now + 1 ) / 60 ))
 147         fminplus=$(( fmin + 60*24 ))
 148         # Filesystem files get copied, so find any newer than the last run.
 149         # The rest are hueristics:
 150         # Given the last time we added a file in git, is that newer than the last conflink run.
 151         # Given new files not added to git, were they modified more recently than the last conflink? but,
 152         # push their modification time back by a day so we can develop them before needing to add them to git.
 153
 154         all_dirs=({/a/bin/ds,/p/c}{/filesystem,/machine_specific/$HOSTNAME/filesystem})
 155         # This part is copied from conflink
 156         for x in /p/c/machine_specific/*.hosts /a/bin/ds/machine_specific/*.hosts; do
 157           if grep -qxF $HOSTNAME $x; then all_dirs+=( ${x%.hosts} ); fi
 158         done
 159
 160         # Just because i forget a lot, -mmin -NUM means files modified <= NUM minutes ago
 161         if (( fmin < 0 )) && [[ $(find ${all_dirs[@]} -mmin $fmin -type f -print -quit 2>/dev/null) ]]; then
 162           v conflink newer filesystem files
 163           chars+=("CONFLINK")
 164           break
 165         fi
 166
 167         for d in /a/bin/distro-setup /p/c; do
 168           [[ -d $d ]] || continue
 169           cd $d
 170           if [[ ! -e .git ]]; then
 171             # some hosts i dont push all of /p/c
 172             continue
 173           fi
 174           if (( $(date -d "$(git log --diff-filter=ACR --format=%aD -1)" +%s) > fsec )); then
 175             v conflink: newer files checked in to git
 176             chars+=("CONFLINK")
 177             break
 178           fi
 179
 180           untracked=()
 181           while read -r l; do
 182             untracked+=("$l")
 183           done < <(git ls-files -o --exclude-standard)
 184           if [[ ${untracked[0]} && $(find "${untracked[@]}" -mmin $fminplus -type f -print -quit) ]]; then
 185             v conflink: untracked in $d
 186             chars+=("CONFLINK")
 187             break
 188           fi
 189         done
 190         cd /
 191
 192       fi
 193       if [[ ! -e $f || $(<$f) != 0 ]]; then
 194         v conflink: last run not found or failed
 195         chars+=("CONFLINK")
 196         break
 197       fi
 198     done
 199   fi
 200
 201   if [[ -s /var/log/exim4/paniclog ]]; then
 202     chars+=("PANIC!")
 203     # leave it up to epanic-clean to send email notification
 204   fi
 205
 206   source /a/bin/bash_unpublished/source-state
 207   if [[ $MAIL_HOST == "$HOSTNAME" ]]; then
 208     bbkmsg=
 209     if [[ $(systemctl is-active btrbk.timer) != active ]]; then
 210       chars+=("BTRBK.TIMER")
 211       bbkmsg="btrbk.timer not enabled"
 212     fi
 213     lo -960 btrbk.timer $bbkmsg
 214
 215     ## check if last snapshot was within an hour
 216     vol=o
 217     # this section generally copied from btrbk scripts, but
 218     # this part modified to speed things up by about half a second.
 219     # I'm not sure if its quite as reliable, but it looks pretty safe.
 220     # Profiled it using time and also adding to the top of the file:
 221     # set -x
 222     # PS4='+ $(date "+%2N") '
 223     # allow failure in case there are no snapshots yet.
 224     # shellcheck disable=SC2012
 225     shopt -u nullglob
 226     files=(/mnt/root/btrbk/$vol.20*)
 227     shopt -s nullglob
 228     snaps=()
 229     if (( ${#files[@]} )); then
 230       snaps=($(ls -1avdr "${files[@]}" 2>/dev/null |head -n1 || : ))
 231     fi
 232     now=$(date +%s)
 233     maxtime=0
 234     for s in ${snaps[@]}; do
 235       file=${s##*/}
 236       t=$(date -d $(sed -r  's/(.{4})(..)(.{5})(..)(.*)/\1-\2-\3:\4:\5/' <<<${file#$vol.}) +%s)
 237       if (( t > maxtime )); then
 238         maxtime=$t
 239       fi
 240     done
 241     if (( maxtime < now - 4*60*60 )); then
 242       chars+=("OLD-SNAP")
 243       snapshotmsg="/o snapshot older than 4 hours"
 244     fi
 245     lo -1 old-snapshot $snapshotmsg
 246   fi
 247
 248   cat /a/bin/bash_unpublished/source-state >$status_file
 249
 250   if [[ ${chars[*]} ]]; then
 251     echo "ps_char=\"${chars[*]} \$ps_char\"" >>$status_file
 252   fi
 253
 254 }
 255 # use this if we want to do something just once per minute
 256 first_chars=()
 257
 258 power=true
 259 if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
 260   power=false
 261 fi
 262
 263 write-status
 264 if [[ $1 ]]; then
 265   cat $status_file
 266   exit 0
 267 fi
 268
 269 if ! $power; then
 270   exit 0
 271 fi
 272
 273 # about 15 minutes
 274 for ((i=1; i<=60; i++)); do
 275   sleep 15
 276   write-status
 277 done