handlers/mysql

   1 #
   2 # mysql handler script for backupninja
   3 #
   4
   5 getconf backupdir /var/backups/mysql
   6 getconf databases all
   7 getconf compress yes
   8 getconf dbusername
   9 getconf dbpassword
  10 getconf dbhost localhost
  11 getconf hotcopy no
  12 getconf sqldump no
  13 getconf user root
  14
  15 # create backup dirs
  16
  17 [ -d $backupdir ] || mkdir -p $backupdir
  18 [ -d $backupdir ] || fatal "Backup directory '$backupdir'"
  19 hotdir="$backupdir/hotcopy"
  20 dumpdir="$backupdir/sqldump"
  21 [ "$sqldump" == "no" -o -d $dumpdir ] || mkdir -p $dumpdir
  22 [ "$hotcopy" == "no" -o -d $hotdir ] || mkdir -p $hotdir
  23
  24 # create .my.cnf
  25  # (we do this because we don't want to have to specify the password on the command line
  26  # because then anyone would be able to see it with a 'ps aux'. instead, we create a
  27  # temporary ~/.my.cnf in root's home directory).
  28
  29 if [ "$dbusername" != "" ]; then
  30         home=`grep '^root:' /etc/passwd | awk -F: '{print $6}'`
  31         [ -d $home ] || fatal "Can't find root's home directory ($home)."
  32         mycnf="$home/.my.cnf"
  33         if [ -f $mycnf ]; then
  34                 # rename temporarily
  35                 tmpcnf="$home/my.cnf.disable"
  36                 debug "mv $mycnf $tmpcnf"
  37                 mv $mycnf $tmpcnf
  38         fi
  39         oldmask=`umask`
  40         umask 077
  41         cat > $mycnf <<EOF
  42 # auto generated backupninja mysql conf
  43 [mysql]
  44 user=$dbusername
  45 password=$dbpassword
  46
  47 [mysqldump]
  48 user=$dbusername
  49 password=$dbpassword
  50
  51 [mysqlhotcopy]
  52 user=$dbusername
  53 password=$dbpassword
  54 EOF
  55         umask $oldmask
  56 fi
  57
  58 ## HOT COPY
  59
  60 if [ "$hotcopy" == "yes" ]; then
  61         if [ "$databases" == "all" ]; then
  62                 execstr="$MYSQLHOTCOPY --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
  63                 debug "su $user -c '$execstr'"
  64                 if [ ! $test ]; then
  65                         output=`su $user -c "$execstr" 2>&1`
  66                         code=$?
  67                         if [ "$code" == "0" ]; then
  68                                 debug $output
  69                                 info "Successfully finished hotcopy of all mysql databases"
  70                         else
  71                                 warning $output
  72                                 warning "Failed to hotcopy all mysql databases"
  73                         fi
  74                 fi
  75         else
  76                 for db in $databases; do
  77                         execstr="$MYSQLHOTCOPY --allowold $db $hotdir"
  78                         debug "su $user -c '$execstr'"
  79                         if [ ! $test ]; then
  80                                 output=`su $user -c "$execstr" 2>&1`
  81                                 code=$?
  82                                 if [ "$code" == "0" ]; then
  83                                         debug $output
  84                                         info "Successfully finished hotcopy of mysql database $db"
  85                                 else
  86                                         warning $output
  87                                         warning "Failed to hotcopy mysql database $db"
  88                                 fi
  89                         fi
  90                 done
  91         fi
  92 fi
  93
  94 ## SQL DUMP
  95
  96 if [ "$sqldump" == "yes" ]; then
  97         if [ "$databases" == "all" ]; then
  98                 databases=`echo 'show databases' | su $user -c "$MYSQL" | grep -v Database`
  99         fi
 100
 101         for db in $databases; do
 102                 execstr="$MYSQLDUMP --lock-tables --complete-insert --add-drop-table --quick --quote-names $db > $dumpdir/${db}.sql"
 103                 debug "su $user -c '$execstr'"
 104                 if [ ! $test ]; then
 105                         output=`su $user -c "$execstr" 2>&1`
 106                         code=$?
 107                         if [ "$code" == "0" ]; then
 108                                 debug $output
 109                                 info "Successfully finished dump of mysql database $db"
 110                         else
 111                                 warning $output
 112                                 warning "Failed to dump mysql databases $db"
 113                         fi
 114                 fi
 115         done
 116
 117         if [ "$compress" == "yes" ]; then
 118                 output=`$GZIP -f $dumpdir/*.sql 2>&1`
 119                 debug $output
 120         fi
 121 fi
 122
 123 if [ "$dbusername" != "" ]; then
 124         ## clean up tmp config file
 125         debug "rm $mycnf"
 126         rm $mycnf
 127         if [ -f "$tmpcnf" ]; then
 128                 debug "mv $tmpcnf $mycnf"
 129                 mv $tmpcnf $mycnf
 130         fi
 131 fi
 132
 133 return 0