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)-$(date "+%Y%m%d-%H%M%S").sql"
  14 STATS=""
  15
  16 Help() {
  17         echo "$NAME [<options> ...]"
  18         echo
  19         echo "  --host|-h <host>"
  20         echo "      MySQL server hostname [\"$MYHOST\"]."
  21         echo "  --user|-u <user>"
  22         echo "      MySQL server user [\"$MYUSER\"]."
  23         echo "  --password|-p <password>"
  24         echo "      MySQL server password [\"$MYPW\"]".
  25         echo "  --outfile|-o <file>"
  26         echo "      Path and name of SQL dump file [\"$OUTFILE\"]."
  27         echo "  --outdir|-d <directory>"
  28         echo "      Directory for automatically named dump files."
  29         echo "  --summary|-s"
  30         echo "      Display file and file system status summary."
  31         echo
  32 }
  33
  34 Usage() {
  35         Help
  36         exit 2
  37 }
  38
  39 for cmd in mysql mysqldump; do
  40         if ! which "$cmd" >/dev/null 2>&1; then
  41                 echo "$NAME: \"$cmd\" command not found!"
  42                 exit 1
  43         fi
  44 done
  45
  46 while [ $# -gt 0 ]; do
  47         case "$1" in
  48           "--host"|"-h")
  49                 [ $# -ge 2 ] || Usage
  50                 MYHOST="$2"
  51                 shift 2
  52                 ;;
  53           "--user"|"-u")
  54                 [ $# -ge 2 ] || Usage
  55                 MYHOST="$2"
  56                 shift 2
  57                 ;;
  58           "--password"|"-p")
  59                 [ $# -ge 2 ] || Usage
  60                 MYPW="$2"
  61                 shift 2
  62                 ;;
  63           "--outfile"|"-o")
  64                 [ $# -ge 2 ] || Usage
  65                 OUTFILE="$2"
  66                 shift 2
  67                 ;;
  68           "--outdir"|"-d")
  69                 [ $# -ge 2 ] || Usage
  70                 OUTFILE="$2/$(hostname -s)-$(date "+%Y%m%d-%H%M%S").sql"
  71                 shift 2
  72                 ;;
  73           "--summary"|"-s")
  74                 STATS=1
  75                 shift
  76                 ;;
  77           "--help")
  78                 Help
  79                 exit 0
  80                 ;;
  81           *)
  82                 Usage
  83         esac
  84 done
  85
  86 echo "Dumping MySQL server on \"$MYHOST\" (user \"$MYUSER\"):"
  87 umask 0077
  88
  89 [ -n "$MYPW" ] && PWSWITCH="--password='$MYPW'" || PWSWITCH=""
  90
  91 echo "Getting list of databases from server ..."
  92 DATABASES=$(
  93         mysql -h "$MYHOST" -u "$MYUSER" $PWSWITCH -e 'show databases' \
  94          | grep "^\| " | cut -d' ' -f2 | grep -v "Database" \
  95          | grep -v "information_schema" | grep -v "mysql"
  96 )
  97 if [ $? -ne 0 ]; then
  98         echo "Failed to get list of databases! Aborting!"
  99         exit 1
 100 fi
 101
 102 echo "Dumping SQL data to file \"$OUTFILE\" ..."
 103 CMD="mysqldump \
 104         -h $MYHOST \
 105         -u $MYUSER \
 106         $PWSWITCH \
 107         --single-transaction \
 108         --databases $DATABASES"
 109
 110 echo "Start: $(date)"
 111 echo $CMD
 112 $CMD >"$OUTFILE"; r=$?
 113 echo "End: $(date)"
 114
 115 [ $r -eq 0 ] \
 116         && echo "Dump command exited with code 0, success." \
 117         || echo "Dump command FAILED with code $r!" >&2
 118
 119 if [ -e "$OUTFILE" -a -n "$STATS" ]; then
 120         echo
 121         echo "SQL dump file"
 122         ls -lh "$OUTFILE"
 123         echo
 124         df -h "$OUTFILE"
 125         echo
 126 fi
 127
 128 exit $r