# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*- # vim: set filetype=sh sw=3 sts=3 expandtab autoindent: # # mysql handler script for backupninja # getconf backupdir /var/backups/mysql getconf databases all getconf ignores getconf nodata getconf dbhost localhost getconf hotcopy no getconf sqldump no getconf sqldumpoptions "--lock-tables --complete-insert --add-drop-table --quick --quote-names" getconf compress yes getconf vsname # authentication: getconf user getconf dbusername getconf dbpassword getconf configfile /etc/mysql/debian.cnf # Decide if the handler should operate on a vserver or on the host. # In the former case, check that $vsname exists and is running. usevserver=no vroot='' if [ $vservers_are_available = yes ]; then if [ -n "$vsname" ]; then # does it exist ? if ! vservers_exist "$vsname" ; then fatal "The vserver given in vsname ($vsname) does not exist." fi # is it running ? vservers_running $vsname || fatal "The vserver $vsname is not running." # everything ok info "Using vserver '$vsname'." usevserver=yes vroot="$VROOTDIR/$vsname" else info "No vserver name specified, actions will be performed on the host." fi fi ## Prepare ignore part of the command ## This only works for mysqldump at the moment ignore='' for i in $ignores $nodata; do ignore="$ignore --ignore-table=$i" done # create backup dirs, $vroot will be empty if no vsname was specified # and we will instead proceed to operate on the host [ -d $vroot$backupdir ] || mkdir -p $vroot$backupdir [ -d $vroot$backupdir ] || fatal "Backup directory '$vroot$backupdir'" hotdir="$backupdir/hotcopy" dumpdir="$backupdir/sqldump" if [ $usevserver = yes ] then [ "$sqldump" == "no" -o -d $vroot$dumpdir ] || $VSERVER $vsname exec mkdir -p $dumpdir [ "$hotcopy" == "no" -o -d $vroot$hotdir ] || $VSERVER $vsname exec mkdir -p $hotdir else [ "$sqldump" == "no" -o -d $dumpdir ] || mkdir -p $dumpdir [ "$hotcopy" == "no" -o -d $hotdir ] || mkdir -p $hotdir fi ####################################################################### ## AUTHENTICATION # # one of three authentication methods: # 1. setting the user, so that /home/user/.my.cnf is used. # 2. specifying the user and password in the handler config, # which generates a temporary .my.cnf in /root/.my.cnf # 3. specify the config file with --defaults-extra-file # (this option DOESN'T WORK WITH MYSQLHOTCOPY) # # create .my.cnf # only if dbusername and dbpassword specified. # we create a tmp file because we don't want to # specify the password on the command line. defaultsfile="" if [ -n "$dbusername" -a -n "$dbpassword" ] then if [ $usevserver = yes ] then home=`$VSERVER $vsname exec getent passwd "root" | @AWK@ -F: '{print $6}'` else home=`getent passwd "root" | @AWK@ -F: '{print $6}'` fi [ -d $home ] || fatal "Can't find root's home directory ($home)." mycnf="$home/.my.cnf" if [ $usevserver = yes ] then workcnf="$vroot$mycnf" else workcnf="$mycnf" fi if [ -f $workcnf ] then # rename temporarily tmpcnf="$workcnf.disable" debug "mv $workcnf $tmpcnf" mv $workcnf $tmpcnf fi oldmask=`umask` umask 077 cat > $workcnf <<EOF # auto generated backupninja mysql conf [mysql] host=$dbhost user=$dbusername password="$dbpassword" [mysqldump] host=$dbhost user=$dbusername password="$dbpassword" [mysqlhotcopy] host=$dbhost user=$dbusername password="$dbpassword" [mysqladmin] host=$dbhost user=$dbusername password="$dbpassword" EOF umask $oldmask defaultsfile="--defaults-extra-file=$mycnf" # else, if a user is set use her .my.cnf elif [ -n "$user" ] then userset=true; if [ $usevserver = yes ] then userhome=`$VSERVER $vsname exec getent passwd "$user" | @AWK@ -F: '{print $6}'` if [ $? -eq 2 ] then fatal "User $user not found in /etc/passwd" fi debug "User home set to: $vroot$userhome" [ -f $vroot$userhome/.my.cnf ] || fatal "Can't find config file in $userhome/.my.cnf" else userhome=`getent passwd "$user" | @AWK@ -F: '{print $6}'` if [ $? -eq 2 ] then fatal "User $user not found in /etc/passwd" fi debug "User home set to: $userhome" [ -f $userhome/.my.cnf ] || fatal "Can't find config file in $userhome/.my.cnf" fi defaultsfile="--defaults-extra-file=$userhome/.my.cnf" debug "using $defaultsfile" # otherwise use $configfile else user=root defaultsfile="--defaults-extra-file=$configfile" fi ####################################################################### ## HOT COPY if [ "$hotcopy" == "yes" ] then info "Initializing hotcopy method" if [ "$databases" == "all" ] then if [ $usevserver = yes ] then info "dbhost: $dbhost" execstr="$VSERVER $vsname exec $MYSQLHOTCOPY -h $dbhost --quiet --allowold --regexp /.\*/./.\*/ $hotdir" else execstr="$MYSQLHOTCOPY --quiet --allowold --regexp /.\*/./.\*/ $hotdir" fi debug "su $user -c \"$execstr\"" if [ ! $test ] then output=`su $user -c "$execstr" 2>&1` code=$? if [ "$code" == "0" ] then debug $output info "Successfully finished hotcopy of all mysql databases" else warning $output warning "Failed to hotcopy all mysql databases" fi fi else for db in $databases do if [ $usevserver = yes ] then execstr="$VSERVER $vsname exec $MYSQLHOTCOPY --allowold $db $hotdir" else execstr="$MYSQLHOTCOPY --allowold $db $hotdir" fi debug 'su $user -c \"$execstr\"' if [ ! $test ] then output=`su $user -c "$execstr" 2>&1` code=$? if [ "$code" == "0" ] then debug $output info "Successfully finished hotcopy of mysql database $db" else warning $output warning "Failed to hotcopy mysql database $db" fi fi done fi fi ########################################################################## ## SQL DUMP if [ "$sqldump" == "yes" ] then info "Initializing SQL dump method" if [ "$databases" == "all" ] then if [ $usevserver = yes ] then debug 'set -o pipefail ; echo show databases | $VSERVER $vsname exec su $user -c \"$MYSQL $defaultsfile\" | grep -v Database' databases=`set -o pipefail ; echo 'show databases' | $VSERVER $vsname exec su $user -c "$MYSQL $defaultsfile" | grep -v Database` if [ $? -ne 0 ] then fatal "Authentication problem, maybe user/password is wrong or mysqld is not running?" fi else databases=$(set -o pipefail ; su $user -c "$MYSQL $defaultsfile -N -B -e 'show databases'" | sed 's/|//g;/\+----/d') if [ $? -ne 0 ] then fatal "Authentication problem, maybe user/password is wrong or mysqld is not running?" fi fi fi for db in $databases do DUMP_BASE="$MYSQLDUMP $defaultsfile $sqldumpoptions" case "$db" in information_schema) DUMP_BASE="${DUMP_BASE} --skip-lock-tables" ;; performance_schema) DUMP_BASE="${DUMP_BASE} --skip-lock-tables --skip-events" ;; esac # Dumping structure and data DUMP="$DUMP_BASE $ignore $db" # If requested, dump only the table structure for this database if echo "$nodata" | grep -E '(^|[[:space:]])'"$db\." >/dev/null then # Get the structure of the tables, without data DUMP_STRUCT="$DUMP_BASE --no-data $db" for qualified_table in $nodata do table=$( expr match "$qualified_table" "$db\.\([^\w]*\)" ) DUMP_STRUCT="$DUMP_STRUCT $table" done DUMP="( $DUMP; $DUMP_STRUCT )" fi if [ $usevserver = yes ] then # Test to make sure mysqld is running, if it is not sqldump will not work $VSERVER $vsname exec su $user -c "$MYSQLADMIN $defaultsfile ping 2>&1 >/dev/null" if [ $? -ne 0 ]; then fatal "mysqld doesn't appear to be running!" fi if [ "$compress" == "yes" ]; then execstr="$VSERVER $vsname exec $DUMP | $GZIP $GZIP_OPTS > '$vroot$dumpdir/${db}.sql.gz'" else execstr="$VSERVER $vsname exec $DUMP -r '$vroot$dumpdir/${db}.sql'" fi else # Test to make sure mysqld is running, if it is not sqldump will not work su $user -c "$MYSQLADMIN $defaultsfile ping 2>&1 >/dev/null" if [ $? -ne 0 ]; then fatal "mysqld doesn't appear to be running!" fi if [ "$compress" == "yes" ]; then execstr="$DUMP | $GZIP $GZIP_OPTS > '$dumpdir/${db}.sql.gz'" else execstr="$DUMP -r '$dumpdir/${db}.sql'" fi fi debug "su $user -c \"$execstr\"" if [ ! $test ] then output=`su $user -s /bin/bash -c "set -o pipefail ; $execstr" 2>&1` code=$? if [ "$code" == "0" ] then debug $output info "Successfully finished dump of mysql database $db" else warning $output warning "Failed to dump mysql databases $db" fi fi done fi # clean up tmp config file if [ "$dbusername" != "" -a "$dbpassword" != "" ] then ## clean up tmp config file debug "rm $workcnf" rm $workcnf if [ -f "$tmpcnf" ] then debug "mv $tmpcnf $workcnf" mv $tmpcnf $workcnf fi fi return 0