bin/mkmysqldump

   1 #!/bin/sh
   2 #
   3 # mkmysqldump -- dump MySQL (master) data
   4 # Copyright (c)2015 Alexander Barton <alex@barton.de>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 # Please read the file COPYING, README and AUTHORS for more information.
  11 #
  12
  13 NAME=$(basename "$0")
  14
  15 # Defaults
  16 MYHOST="localhost"
  17 MYUSER="root"
  18 MYPW=""
  19 OUTFILE="$(hostname -s)-$(date "+%Y%m%d-%H%M%S").sql"
  20 STATS=""
  21 COMPRESS=""
  22
  23 Help() {
  24         echo "$NAME [<options> ...]"
  25         echo
  26         echo "  --host|-h <host>"
  27         echo "      MySQL server hostname [\"$MYHOST\"]."
  28         echo "  --user|-u <user>"
  29         echo "      MySQL server user [\"$MYUSER\"]."
  30         echo "  --password|-p <password>"
  31         echo "      MySQL server password [\"$MYPW\"]".
  32         echo "  --outfile|-o <file>"
  33         echo "      Path and name of SQL dump file [\"$OUTFILE\"]."
  34         echo "  --outdir|-d <directory>"
  35         echo "      Directory for automatically named dump files."
  36         echo "  --summary|-s"
  37         echo "      Display file and file system status summary."
  38         echo "  --gzip"
  39         echo "      Compress SQL dump file using gzip(1)"
  40         echo "  --bzip2"
  41         echo "      Compress SQL dump file using bzip2(1)"
  42         echo "  --xz"
  43         echo "      Compress SQL dump file using xz(1)"
  44         echo
  45 }
  46
  47 Usage() {
  48         Help
  49         exit 2
  50 }
  51
  52 ErrorNotice() {
  53         echo
  54         echo "----->  THERE HAVE BEEN ERRORS!  <-----"
  55         echo
  56 }
  57
  58 for cmd in mysql mysqldump; do
  59         if ! which "$cmd" >/dev/null 2>&1; then
  60                 echo "$NAME: \"$cmd\" command not found!"
  61                 exit 1
  62         fi
  63 done
  64
  65 while [ $# -gt 0 ]; do
  66         case "$1" in
  67           "--host"|"-h")
  68                 [ $# -ge 2 ] || Usage
  69                 MYHOST="$2"
  70                 shift 2
  71                 ;;
  72           "--user"|"-u")
  73                 [ $# -ge 2 ] || Usage
  74                 MYHOST="$2"
  75                 shift 2
  76                 ;;
  77           "--password"|"-p")
  78                 [ $# -ge 2 ] || Usage
  79                 MYPW="$2"
  80                 shift 2
  81                 ;;
  82           "--outfile"|"-o")
  83                 [ $# -ge 2 ] || Usage
  84                 OUTFILE="$2"
  85                 shift 2
  86                 ;;
  87           "--outdir"|"-d")
  88                 [ $# -ge 2 ] || Usage
  89                 OUTFILE="$2/$(hostname -s)-$(date "+%Y%m%d-%H%M%S").sql"
  90                 shift 2
  91                 ;;
  92           "--gzip")
  93                 COMPRESS="gzip -v"
  94                 shift
  95                 ;;
  96           "--bzip2")
  97                 COMPRESS="bzip2 -v"
  98                 shift
  99                 ;;
 100           "--xz")
 101                 COMPRESS="xz -v"
 102                 shift
 103                 ;;
 104           "--summary"|"-s")
 105                 STATS=1
 106                 shift
 107                 ;;
 108           "--help")
 109                 Help
 110                 exit 0
 111                 ;;
 112           *)
 113                 Usage
 114         esac
 115 done
 116
 117 echo "Dumping MySQL server on \"$MYHOST\" (user \"$MYUSER\"):"
 118 echo "Started: $(date)"
 119 umask 0077
 120
 121 [ -n "$MYPW" ] && PWSWITCH="--password='$MYPW'" || PWSWITCH=""
 122
 123 echo "Getting list of databases from server ..."
 124 DATABASES=$(
 125         mysql -h "$MYHOST" -u "$MYUSER" $PWSWITCH -e 'show databases' \
 126          | grep "^\| " | cut -d' ' -f2 | grep -v "Database" \
 127          | grep -v "information_schema" \
 128          | grep -v "performance_schema" \
 129          | grep -v "mysql"
 130 )
 131 if [ $? -ne 0 ]; then
 132         echo "Failed to get list of databases! Aborting!"
 133         ErrorNotice
 134         exit 1
 135 fi
 136
 137 echo "Will dump the following databases:"
 138 for d in $DATABASES; do
 139         echo " - $d"
 140 done
 141
 142 echo "Dumping SQL data to file \"$OUTFILE\" ..."
 143 echo "Start date: $(date)"
 144 CMD="mysqldump \
 145         -h $MYHOST \
 146         -u $MYUSER \
 147         $PWSWITCH \
 148         --master-data=1 \
 149         --databases $DATABASES"
 150 $CMD >"$OUTFILE"; r=$?
 151 if [ -n "$COMPRESS" -a -s "$OUTFILE" -a $r -eq 0 ]; then
 152         echo "Dump done: $(date)"
 153         echo "Compressing dump file ($COMPRESS) ..."
 154         $COMPRESS "$OUTFILE"
 155 fi
 156 echo "End: $(date)"
 157 echo
 158
 159 if [ -n "$STATS" ]; then
 160         echo "SQL dump file"
 161         for f in "$OUTFILE"*; do
 162                 ls -lh "$f"*
 163         done
 164         echo
 165         df -h "$(dirname "$OUTFILE")"
 166         echo
 167 fi
 168
 169 if [ $r -eq 0 ]; then
 170         echo "Dump command exited with code 0, success."
 171 else
 172         echo "Dump command FAILED with code $r!" >&2
 173         ErrorNotice
 174 fi
 175
 176 echo
 177 exit $r