mysql --defaults-file stuff.

[matthijs/upstream/backupninja.git] / handlers / mysql

diff --git a/handlers/mysql b/handlers/mysql
index b552ddebc346c7c5647e50d830c451e9d5a6f5dd..13dd62f2643a9d3be9ffdcaf0e82df2555d8cdc0 100644 (file)
--- a/handlers/mysql
+++ b/handlers/mysql
@@ -4,17 +4,30 @@
 
 getconf backupdir /var/backups/mysql
 getconf databases all
-getconf compress yes
-getconf dbusername
-getconf dbpassword
 getconf dbhost localhost
 getconf hotcopy no
 getconf sqldump no
-getconf user root
+getconf compress yes
 getconf vsname
 
+# authentication:
+getconf user
+getconf dbusername
+getconf dbpassword
+getconf configfile /etc/mysql/debian.cnf
+
+if [ "$user" == "" ]; then
+       userset=false;
+       user=root;
+else
+       userset=true;
+       userhome=`grep "^$user:" /etc/passwd | awk -F: '{print $6}'`
+       [ -f $userhome/.my.cnf ] || fatal "Can't find config file in $userhome/.my.cnf"
+fi
+
 # If vservers are configured, decide if the handler should
 # use them or if it should just operate on the host
+
 if [ "$VSERVERS" = "yes" ]
 then
        if [ ! -z $vsname ]
@@ -49,15 +62,28 @@ else
        [ "$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
-# (we do this because we don't want to have to specify the password on the command line
-# because then anyone would be able to see it with a 'ps aux'. instead, we create a 
-# temporary ~/.my.cnf in root's home directory).
+# only if dbusername and dbpassword specified.
+# we create a tmp file because we don't want to
+# specify the password on the command line.
 
-if [ "$dbusername" != "" ]; then
-       home=`grep '^root:' $vroot/etc/passwd | awk -F: '{print $6}'`
+defaultsfile=""
+if [ "$dbusername" != "" -a "$dbpassword" != "" ]; then
+       home=`grep '^root:' /etc/passwd | awk -F: '{print $6}'`
        [ -d $home ] || fatal "Can't find root's home directory ($home)."
-       mycnf="$vroot$home/.my.cnf"
+       mycnf="$home/.my.cnf"
        if [ -f $mycnf ]; then
                # rename temporarily
                tmpcnf="$home/my.cnf.disable"
@@ -81,8 +107,13 @@ user=$dbusername
 password=$dbpassword
 EOF
        umask $oldmask
+       defaultsfile="--defaults-file=$mycnf"
+elif [ "$userset" == "false" ]; then
+       # if user is set, don't use $configfile
+       defaultsfile="--defaults-file=$configfile"
 fi
-       
+
+#######################################################################
 ## HOT COPY
 
 if [ "$hotcopy" == "yes" ]; then 
@@ -128,25 +159,26 @@ if [ "$hotcopy" == "yes" ]; then
                done
        fi
 fi
-       
+
+##########################################################################
 ## SQL DUMP
 
 if [ "$sqldump" == "yes" ]; then
        if [ "$databases" == "all" ]; then
                if [ $usevserver ]
                then
-                       databases=`echo 'show databases' | $VSERVER $vsname exec su $user -c "$MYSQL" | grep -v Database`
+                       databases=`echo 'show databases' | $VSERVER $vsname exec su $user -c "$MYSQL $defaultsfile" | grep -v Database`
                else
-                       databases=`echo 'show databases' | su $user -c "$MYSQL" | grep -v Database`
+                       databases=`echo 'show databases' | su $user -c "$MYSQL $defaultsfile" | grep -v Database`
                fi
        fi
 
        for db in $databases; do
                if [ $usevserver ]
                then
-                       execstr="$VSERVER $vsname exec $MYSQLDUMP --lock-tables --complete-insert --add-drop-table --quick --quote-names $db > $vroot$dumpdir/${db}.sql"
+                       execstr="$VSERVER $vsname exec $MYSQLDUMP $defaultsfile --lock-tables --complete-insert --add-drop-table --quick --quote-names $db > $vroot$dumpdir/${db}.sql"
                else
-                       execstr="$MYSQLDUMP --lock-tables --complete-insert --add-drop-table --quick --quote-names $db > $dumpdir/${db}.sql"
+                       execstr="$MYSQLDUMP $defaultsfile --lock-tables --complete-insert --add-drop-table --quick --quote-names $db > $dumpdir/${db}.sql"
                fi
                debug "su $user -c '$execstr'"
                if [ ! $test ]; then
@@ -168,6 +200,7 @@ if [ "$sqldump" == "yes" ]; then
        fi
 fi
 
+# clean up tmp config file
 if [ "$dbusername" != "" ]; then
        ## clean up tmp config file
        debug "rm $mycnf"