#!/bin/sh
# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
# This file is public domain and comes with NO WARRANTY
of any kind
#
MySQL daemon start/s
top script.
# Usually this is put in /etc/init.d (at least on machines SYSV R4 based
# systems) and linked
to /etc/rc3.d/S99
mysql and /etc/rc0.d/K01
mysql.
# When this is done
the mysql server will
be started when
the machine is
# started and shut down when
the systems goes down.
# Comments
to support chkconfig on RedHat Linux
# chkconfig: 2345 64 36
# description: A very fast and reliable
SQL database engine.
# Comments
to support LSB init script conventions
###
BEGIN INIT INFO
# Provides:
mysql
# Required
-Start: $local_fs $network $remote_fs
# Should
-Start: ypbind nscd ldap ntpd xntpd
# Required
-S
top: $local_fs $network $remote_fs
# Default
-Start: 2 3 4 5
# Default
-S
top: 0 1 6
# Short
-Description: start and s
top
MySQL
# Description:
MySQL is a very fast and reliable
SQL database engine.
### END INIT INFO
# If you install
MySQL on some o
ther places than /usr/local/
mysql,
then you
# have
to do one
of the following things for this script
to work:
#
#
- Run this script from within
the MySQL installation direc
tory
#
- Create a /etc/my.cnf file with
the following information:
# [
mysqld]
# basedir=<path
-to-mysql-installation
-direc
tory>
#
- Add
the above
to any o
ther configuration file (for example ~/.my.ini)
# and copy my_print_defaults
to /usr/bin
#
- Add
the path
to the mysql-installation
-direc
tory
to the basedir
variable
#
below.
#
# If you want
to affect o
ther
MySQL variables, you should make your changes
# in
the /etc/my.cnf, ~/.my.cnf or o
ther
MySQL configuration files.
# If you change base dir, you must also change datadir.
These may get
# overwritten by
settings in
the MySQL configuration files.
LOCALPATH=$(dirname $(readlink
-f "$0"))
basedir=${LOCALPATH}/s
oftware
datadir=${LOCALPATH}/data
# Default
value, in seconds, afterwhich
the script should timeout waiting
# for server start.
#
Value here is ov
erriden by
value in my.cnf.
# 0 means don't wait at all
# Negative num
bers mean
to wait indefinitely
service_startup_timeout=900
# Lock direc
tory for RedHat / SuSE.
lockdir="${LOCALPATH}/lock"
lock_file_path="${lockdir}/
mysql.lock"
#
The following
variables are only
set for letting
mysql.server find things.
#
Set some defaults
mysqld_pid_file_path="${LOCALPATH}/pid/
mysql.pid"
if test
-z "$basedir"
then
basedir=/usr/local/
mysql
bindir=/usr/local/
mysql/bin
if test
-z "$datadir"
then
datadir=/usr/local/
mysql/data
fi
sbindir=/usr/local/
mysql/bin
li
bexecdir=/usr/local/
mysql/bin
else
bindir="$basedir/bin"
if test
-z "$datadir"
then
datadir="$basedir/data"
fi
sbindir="$basedir/sbin"
li
bexecdir="$basedir/li
bexec"
fi
# datadir_
set is used
to determine if datadir was
set (and so should
be
# *not*
set inside
of the --basedir= handler.)
datadir_
set=1
#
# Use LSB init script functions for printing messages, if possible
#
lsb_functions="/lib/lsb/init
-functions"
if test
-f $lsb_functions ;
then
. $lsb_functions
else
log_success_msg()
{
echo " SUCCESS! $@"
}
log_failure_msg()
{
echo "
ERROR! $@"
}
fi
PATH="/sbin:/usr/sbin:/bin:/usr/bin:$basedir/bin"
export PATH
mode=$1 # start or s
top
[ $#
-ge 1 ] && shift
o
ther_args="$*" # uncommon, but needed when called from an RPM upgrade action
# Expected: "
--skip
-networking
--skip
-grant
-tables"
#
They are not checked here, intentionally, as it is
the resposibility
#
of the "spec" file author
to give correct arguments only.
case `echo "testing\c"`,`echo
-n testing` in
*c*,
-n*) echo_n= echo_c= ;;
*c*,*) echo_n=
-n echo_c= ;;
*) echo_n= echo_c='\c' ;;
esac
parse_server_arguments() {
for arg do
case "$arg" in
--basedir=*) basedir=`echo "$arg" | sed
-e 's/^[^=]*=//'`
bindir="$basedir/bin"
if test
-z "$datadir_
set";
then
datadir="$basedir/data"
fi
sbindir="$basedir/sbin"
li
bexecdir="$basedir/li
bexec"
;;
--datadir=*) datadir=`echo "$arg" | sed
-e 's/^[^=]*=//'`
datadir_
set=1
;;
--pid
-file=*)
mysqld_pid_file_path=`echo "$arg" | sed
-e 's/^[^=]*=//'` ;;
--service
-startup
-timeout=*) service_startup_timeout=`echo "$arg" | sed
-e 's/^[^=]*=//'` ;;
esac
done
}
wait_for_pid () {
verb="$1" # created | removed
pid="$2" # process ID
of the program operating on
the pid
-file
pid_file_path="$3" # path
to the PID file.
i=0
avoid_race_condition="by checking again"
while test $i
-ne $service_startup_timeout ; do
case "$verb" in
'created')
# wait for a PID
-file
to pop in
to existence.
test
-s "$pid_file_path" && i='' && break
;;
'removed')
# wait for this PID
-file
to disappear
test !
-s "$pid_file_path" && i='' && break
;;
*)
echo "wait_for_pid () usage: wait_for_pid created|removed pid pid_file_path"
exit 1
;;
esac
# if server isn't running,
then pid
-file will never
be updated
if test
-n "$pid";
then
if kill
-0 "$pid" 2>/dev/
null;
then
: #
the server still runs
else
#
The server may have exited
between
the last pid
-file check and now.
if test
-n "$avoid_race_condition";
then
avoid_race_condition=""
continue # Check again.
fi
#
there's nothing that will affect
the file.
log_failure_msg "
The server quit without updating PID file ($pid_file_path)."
return 1 # not waiting any more.
fi
fi
echo $echo_n ".$echo_c"
i=`expr $i + 1`
sleep 1
done
if test
-z "$i" ;
then
log_success_msg
return 0
else
log_failure_msg
return 1
fi
}
# Get arguments from
the my.cnf file,
#
the only group, which is read from now on is [
mysqld]
if test
-x "$bindir/my_print_defaults";
then
print_defaults="$bindir/my_print_defaults"
else
# Try
to find basedir in /etc/my.cnf
conf=${LOCALPATH}/etc/my.cnf
print_defaults=
if test
-r $conf
then
subpat='^[^=]*basedir[^=]*=\(.*\)$'
dirs=`sed
-e "/$subpat/!d"
-e 's//\1/' $conf`
for d in $dirs
do
d=`echo $d | sed
-e 's/[ ]//g'`
if test
-x "$d/bin/my_print_defaults"
then
print_defaults="$d/bin/my_print_defaults"
break
fi
done
fi
# Hope it's in
the PATH ... but I doubt it
test
-z "$print_defaults" && print_defaults="my_print_defaults"
fi
#
# Read defaults file from 'basedir'. If
there is no defaults file
there
# check if it's in
the old (depricated) place (datadir) and read it from
there
#
extra_args=""
if test
-r "${LOCALPATH}/etc/my.cnf"
then
extra_args="
-e ${LOCALPATH}/etc/my.cnf"
fi
parse_server_arguments `$print_defaults $extra_args
mysqld server
mysql_server
mysql.server`
#
#
Set pid file if not given
#
if test
-z "$
mysqld_pid_file_path"
then
mysqld_pid_file_path=$datadir/`hostname`.pid
else
case "$
mysqld_pid_file_path" in
/* ) ;;
* )
mysqld_pid_file_path="$datadir/$
mysqld_pid_file_path" ;;
esac
fi
case "$
mode" in
'start')
# Start daemon
# Safeguard (relative paths, core dumps..)
cd $basedir
echo $echo_n "Starting
MySQL"
if test
-x $bindir/
mysqld_safe
then
# Give extra arguments
to mysqld with
the my.cnf file. This script
# may
be overwritten at next upgrade.
$bindir/
mysqld_safe
--defaults
-file=${LOCALPATH}/etc/my.cnf $o
ther_args >/dev/
null &
wait_for_pid created "$!" "$
mysqld_pid_file_path"; return_
value=$?
# Make lock for RedHat / SuSE
if test
-w "$lockdir"
then
touch "$lock_file_path"
fi
exit $return_
value
else
log_failure_msg "Couldn't find
MySQL server ($bindir/
mysqld_safe)"
fi
;;
's
top')
# S
top daemon. We use a signal here
to avoid having
to know
the
# root password.
if test
-s "$
mysqld_pid_file_path"
then
# signal
mysqld_safe that it needs
to s
top
touch "$
mysqld_pid_file_path.shutdown"
mysqld_pid=`cat "$
mysqld_pid_file_path"`
if (kill
-0 $
mysqld_pid 2>/dev/
null)
then
echo $echo_n "Shutting down
MySQL"
kill $
mysqld_pid
#
mysqld should remove
the pid file when it exits, so wait for it.
wait_for_pid removed "$
mysqld_pid" "$
mysqld_pid_file_path"; return_
value=$?
else
log_failure_msg "
MySQL server process #$
mysqld_pid is not running!"
rm "$
mysqld_pid_file_path"
fi
# Delete lock for RedHat / SuSE
if test
-f "$lock_file_path"
then
rm
-f "$lock_file_path"
fi
exit $return_
value
else
log_failure_msg "
MySQL server PID file could not
be found!"
fi
;;
'restart')
# S
top
the service and regardless
of whe
ther it was
# running or not, start it again.
if $0 s
top $o
ther_args;
then
$0 start $o
ther_args
else
log_failure_msg "Failed
to s
top running server, so refusing
to try
to start."
exit 1
fi
;;
'reload'|'force
-reload')
if test
-s "$
mysqld_pid_file_path" ;
then
read
mysqld_pid < "$
mysqld_pid_file_path"
kill
-HUP $
mysqld_pid && log_success_msg "Reloading service
MySQL"
touch "$
mysqld_pid_file_path"
else
log_failure_msg "
MySQL PID file could not
be found!"
exit 1
fi
;;
'status')
# First, check
to see if pid file exists
if test
-s "$
mysqld_pid_file_path" ;
then
read
mysqld_pid < "$
mysqld_pid_file_path"
if kill
-0 $
mysqld_pid 2>/dev/
null ;
then
log_success_msg "
MySQL running ($
mysqld_pid)"
exit 0
else
log_failure_msg "
MySQL is not running, but PID file exists"
exit 1
fi
else
# Try
to find appropriate
mysqld process
mysqld_pid=`pid
of $li
bexecdir/
mysqld`
# test if multiple pids exist
pid_count=`echo $
mysqld_pid | wc
-w`
if test $pid_count
-gt 1 ;
then
log_failure_msg "Multiple
MySQL running but PID file could not
be found ($
mysqld_pid)"
exit 5
elif test
-z $
mysqld_pid ;
then
if test
-f "$lock_file_path" ;
then
log_failure_msg "
MySQL is not running, but lock file ($lock_file_path) exists"
exit 2
fi
log_failure_msg "
MySQL is not running"
exit 3
else
log_failure_msg "
MySQL is running but PID file could not
be found"
exit 4
fi
fi
;;
*)
# usage
basename=`basename "$0"`
echo "Usage: $basename {start|s
top|restart|reload|force
-reload|status} [
MySQL server options ]"
exit 1
;;
esac
exit 0
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