mysql 6.89 KiB
#
# mysql handler script for backupninja
#
getconf backupdir /var/backups/mysql
getconf databases all
getconf ignores
getconf dbhost localhost
getconf hotcopy no
getconf sqldump no
getconf compress yes
getconf vsname
# authentication:
getconf user
getconf dbusername
getconf dbpassword
getconf configfile /etc/mysql/debian.cnf
# If vservers are configured, decide if the handler should
# use them or if it should just operate on the host
if [ "$vservers" = "yes" ]
then
if [ ! -z $vsname ]
then
info "Using vserver '$vsname'"
usevserver=1
else
info "No vserver name specified, actions will be performed on the host"
fi
fi
# If needed, make sure that the specified vserver exists and is running.
if [ $usevserver ]
then
debug "Examining vserver '$vsname'"
# does it exist ?
vroot="$VROOTDIR/$vsname"
[ -d $vroot ] || fatal "vserver '$vsname' does not exist at '$vroot'"
# is it running ?
$VSERVERINFO -q $vsname RUNNING
if [ $? -ne 0 ]
then
fatal "vserver $vsname is not running."
fi
fi
if [ "$user" == "" ]; then
userset=false;
user=root;
else
userset=true;
if [ $usevserver ]
then
userhome=`$VSERVER $vsname exec getent passwd "$user" | awk -F: '{print $6}'`
if [ $? -eq 2 ]
then
fatal "User $user not found in /etc/passwd"
fi
userhome="$vroot$userhome"
debug "User home set to: $userhome"
[ -f $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
fi
## Prepare ignore part of the command
## This only works for mysqldump at the moment
ignore=''
for i in $ignores; do
ignore="$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 [ $usevserver ]
then
[ "$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 $hotdir
fi
#######################################################################
## AUTHENTICATION
#
# one of three authentication methods:
# 1. setting the user, so that /home/user/.my.cnf is used.
# 2. specifying the user and password in the handler config,
# which generates a temporary .my.cnf in /root/.my.cnf
# 3. specify the config file with --defaults-file
# (this option DOESN'T WORK WITH MYSQLHOTCOPY)
#
# create .my.cnf
# only if dbusername and dbpassword specified.
# we create a tmp file because we don't want to
# specify the password on the command line.
defaultsfile=""
if [ "$dbusername" != "" -a "$dbpassword" != "" ]
then
if [ $usevserver ]
then
home=`$VSERVER $vsname exec getent passwd "root" | awk -F: '{print $6}'`
home="$vroot$home"
debug "Home set to: $home"
else
home=`getent passwd "root" | awk -F: '{print $6}'`
debug "Home set to: $home"
fi
[ -d $home ] || fatal "Can't find root's home directory ($home)."
mycnf="$home/.my.cnf"
if [ -f $mycnf ]
then
# rename temporarily
tmpcnf="$home/my.cnf.disable"
debug "mv $mycnf $tmpcnf"
mv $mycnf $tmpcnf
fi
oldmask=`umask`
umask 077
cat > $mycnf <<EOF# auto generated backupninja mysql conf
[mysql]
user=$dbusername
password="$dbpassword"
[mysqldump]
user=$dbusername
password="$dbpassword"
[mysqlhotcopy]
user=$dbusername
password="$dbpassword"
EOF
umask $oldmask
defaultsfile="--defaults-file=$mycnf"
elif [ "$userset" == "false" ]; then
# if user is set, don't use $mycnf
defaultsfile="--defaults-file=$configfile"
fi
#######################################################################
## HOT COPY
if [ "$hotcopy" == "yes" ]
then
info "Initializing hotcopy method"
if [ "$databases" == "all" ]
then
if [ $usevserver ]
then
execstr="$VSERVER $vsname exec $MYSQLHOTCOPY --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 [ $usevserver ]
then
execstr="$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 ]
then
databases=`echo 'show databases' | $VSERVER $vsname exec su $user -c "$MYSQL $defaultsfile" | grep -v Database`
if [ $? -ne 0 ]
then
fatal "Something unexpected happened, the defaults file may have gone missing or is corrupt"
fi
else
databases=`echo 'show databases' | su $user -c "$MYSQL $defaultsfile" | grep -v Database`
if [ $? -ne 0 ]
then
fatal "Something unexpected happened, the defaults file may have gone missing or is corrupt"
fi
fi
fi
for db in $databases
do
if [ $usevserver ]
then
execstr="$VSERVER $vsname exec $MYSQLDUMP $defaultsfile --lock-tables --complete-insert --add-drop-table --quick --quote-names $ignore $db > $vroot$dumpdir/${db}.sql"
else
execstr="$MYSQLDUMP $defaultsfile --lock-tables --complete-insert --add-drop-table --quick --quote-names $ignore $db > $dumpdir/${db}.sql"
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 dump of mysql database $db"
else
warning $output
warning "Failed to dump mysql databases $db"
fi
fi
done
if [ "$compress" == "yes" ]
then
output=`$GZIP -f $vroot$dumpdir/*.sql 2>&1`
debug $output
fi
fi
# clean up tmp config file
if [ "$dbusername" != "" ]
then
## clean up tmp config file
debug "rm $mycnf"
rm $mycnf
if [ -f "$tmpcnf" ]
then
debug "mv $tmpcnf $mycnf"
mv $tmpcnf $mycnf fi
fi
return 0