bin/mkmysqldump

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