mysql --defaults-file stuff.

backupninja

@@ -3,7 +3,7 @@
 # B A C K U P N I N J A   /()/
 #                         `\|
 #
-# Copyright (C) 2004 riseup.net -- property is theft.
+# Copyright (C) 2004-05 riseup.net -- property is theft.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -429,7 +429,7 @@ getconf RSYNC /usr/bin/rsync
 getconf vservers no
 getconf VSERVERINFO /usr/sbin/vserver-info
 getconf VSERVER /usr/sbin/vserver
-getconf VROOTDIR `$VSERVERINFO info SYSINFO |grep vserver-Rootdir | awk '{print $2}'`
+getconf VROOTDIR `if [ -f "$VSERVERINFO" ]; then $VSERVERINFO info SYSINFO |grep vserver-Rootdir | awk '{print $2}'; fi`
 
 if [ ! -d "$configdirectory" ]; then
 	echo "Configuration directory '$configdirectory' not found."
@@ -443,7 +443,7 @@ if [ "$UID" != "0" ]; then
 	exit 1
 fi
 
-if [ "$VSERVERS" = "yes" -a ! -d $VROOTDIR ]; then
+if [ "$vservers" == "yes" -a ! -d "$VROOTDIR" ]; then
 	echo "vservers option set in config, but $VROOTDIR is not a directory!"
 	fatal "vservers option set in config, but $VROOTDIR is not a directory!"
 fi

changelog

@@ -17,9 +17,9 @@ version 0.x -- xxxxxxxxxxxxx
 		added "bandwidthlimit" option
 	example.dup example config file for duplicity handler 
 	added trac (http://trac.edgewall.com/) environment handler (thanks Charles Lepple!)
-	added configfile option to mysql handler (thanks bonniot!)
-		uses /etc/mysql/debian.cnf by default
-	    now, an empty /etc/backup.d/01.mysql file is all you need
+	added configfile option to mysql handler
+        the default is /etc/mysql/debian.cnf. with this, 
+		sqldump doesn't need dbusername. (hotcopy still does).
 
 version 0.5 -- April 12 2005
 	rdiff handler works when remote sshd has a banner

etc/backup.d/example.mysql

@@ -1,24 +1,31 @@
-## backupninja mysql config file ##
+### backupninja mysql config file ###
 
-dbhost      = localhost
 databases   = all
 backupdir   = /var/backups/mysql
-hotcopy     = yes
-sqldump     = no
+hotcopy     = no
+sqldump     = yes
 compress    = yes
 
-## authentication ##
+### authentication ###
 
-configfile = /etc/mysql/debian.cnf
+# three authentication methods:
+#
+# 1. setting the user, so that /home/user/.my.cnf is used.
+# user = some-unix-user
+#
+# 2. specifying the mysql dbuser and dbpassword,
+#    which generates a temporary .my.cnf in /root/.my.cnf
+# dbusername  = <some-mysql-user>
+# dbpassword  = <password>
+#
+# 3. specify which config file to use with configfile
+#    (this option does not work with hotcopy)
+# configfile = /etc/mysql/debian.cnf
+#
+# if user and dbusername are not specified, the default is to use
+# /etc/mysql/debian.cnf for configfile.
 
-# or...
-# dbusername  = <dbuser>
-# dbpassword  = <dbpassword>
-
-# or...
-# user = root
-
-## notes ##
+### all options ###
 
 # configfile = < path/to/file > (default = /etc/mysql/debian.cnf)
 # The config file is passed to mysql with --defaults-file.
@@ -50,7 +57,7 @@ configfile = /etc/mysql/debian.cnf
 # where to dump the backups. hotcopy backups will be in a subdirectory 'hotcopy' and
 # sqldump backups will be in a subdirectory 'sqldump'
 #
-# hotcopy = < yes | no > (default = yes)
+# hotcopy = < yes | no > (default = no)
 # make a backup of the actual database binary files using mysqlhotcopy.
 #
 # sqldump = < yes | no > (default = no)

handlers/mysql

@@ -3,16 +3,27 @@
 #
 
 getconf backupdir /var/backups/mysql
-getconf configfile /etc/mysql/debian.cnf
 getconf databases all
+getconf dbhost localhost
+getconf hotcopy no
+getconf sqldump no
 getconf compress yes
+getconf vsname
+
+# authentication:
+getconf user
 getconf dbusername
 getconf dbpassword
-getconf dbhost localhost
-getconf hotcopy yes
-getconf sqldump no
-getconf user root
-getconf vsname
+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
@@ -51,17 +62,33 @@ 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
 # only if dbusername and dbpassword specified.
-# we create a tmp file because we don't want to have to
+# we create a tmp file because we don't want to
 # specify the password on the command line.
 
 defaultsfile=""
 if [ "$dbusername" != "" -a "$dbpassword" != "" ]; then
-	mycnf="/tmp/backupninja.$$.my.cnf"
+	home=`grep '^root:' /etc/passwd | awk -F: '{print $6}'`
+	[ -d $home ] || fatal "Can't find root's home directory ($home)."
+	mycnf="$home/.my.cnf"
 	if [ -f $mycnf ]; then
-		debug "rm $mycnf"
-		rm $mycnf
+		# rename temporarily
+		tmpcnf="$home/my.cnf.disable"
+		debug "mv $mycnf $tmpcnf"
+		mv $mycnf $tmpcnf
 	fi
 	oldmask=`umask`
 	umask 077
@@ -80,21 +107,22 @@ user=$dbusername
 password=$dbpassword
 EOF
 	umask $oldmask
-	defaultsfile="--defaults-file $mycnf"
-else
-	# otherwise, use $configfile
-	defaultsfile="--defaults-file $configfile"
+	defaultsfile="--defaults-file=$mycnf"
+elif [ "$userset" == "false" ]; then
+	# if user is set, don't use $configfile
+	defaultsfile="--defaults-file=$configfile"
 fi
 
+#######################################################################
 ## HOT COPY
 
 if [ "$hotcopy" == "yes" ]; then 
 	if [ "$databases" == "all" ]; then
 		if [ $usevserver ]
 		then
-			execstr="$VSERVER $vsname exec $MYSQLHOTCOPY $defaultsfile --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
+			execstr="$VSERVER $vsname exec $MYSQLHOTCOPY --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
 		else
-			execstr="$MYSQLHOTCOPY $defaultsfile --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
+			execstr="$MYSQLHOTCOPY --quiet --allowold --regexp /.\*/./.\*/ $hotdir"
 		fi
 		debug "su $user -c '$execstr'"
 		if [ ! $test ]; then
@@ -112,9 +140,9 @@ if [ "$hotcopy" == "yes" ]; then
 		for db in $databases; do
 			if [ $usevserver ]
 			then
-				execstr="$VSERVER $vsname exec $MYSQLHOTCOPY $defaultsfile --allowold $db $hotdir"
+				execstr="$VSERVER $vsname exec $MYSQLHOTCOPY --allowold $db $hotdir"
 			else
-				execstr="$MYSQLHOTCOPY $defaultsfile --allowold $db $hotdir"
+				execstr="$MYSQLHOTCOPY --allowold $db $hotdir"
 			fi
 			debug "su $user -c '$execstr'"
 			if [ ! $test ]; then
@@ -132,6 +160,7 @@ if [ "$hotcopy" == "yes" ]; then
 	fi
 fi
 
+##########################################################################
 ## SQL DUMP
 
 if [ "$sqldump" == "yes" ]; then
@@ -172,9 +201,14 @@ if [ "$sqldump" == "yes" ]; then
 fi
 
 # clean up tmp config file
-if [ -f "$mycnf" ]; then
+if [ "$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