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#!/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
#
# scripts to start the MySQL daemon and restart it if it dies unexpectedly
#
# This should be executed in the MySQL base directory if you are using a
# binary installation that has other paths than you are using.
#
# mysql.server works by first doing a cd to the base directory and from there
# executing safe_mysqld
trap '' 1 2 3 15 # we shouldn't let anyone kill us
defaults=
case "$1" in
--no-defaults|--defaults-file=*)
defaults="$1"; shift
;;
esac
# Parse arguments to see if caller wants the pid_file somewhere else.
parse_arguments() {
for arg; do
case $arg in
--datadir=*) DATADIR=`echo "$arg" | sed -e "s;--datadir=;;"` ;;
--pid-file=*) pid_file=`echo "$arg" | sed -e "s;--pid-file=;;"` ;;
--socket=*) MYSQL_UNIX_PORT=`echo "$arg" | sed -e "s;--socket=;;"` ;;
--log=*) log=`echo "$arg" | sed -e "s;--log=;;"` ;;
--err-log=*) err_log=`echo "$arg" | sed -e "s;--err-log=;;"` ;;
--basedir=*) MY_BASEDIR_VERSION=`echo "$arg" | sed -e "s;--basedir=;;"` ;;
--ledir=*) ledir=`echo "$arg" | sed -e "s;--ledir=;;"` ;;
--user=*) user=`echo "$arg" | sed -e "s;--user=;;"` ;;
esac
done
}
MY_PWD=`pwd`
# Check if we are starting this relative (for the binary release)
if test -d $MY_PWD/data/mysql -a -f ./share/mysql/english/errmsg.sys -a \
-x ./bin/mysqld
then
MY_BASEDIR_VERSION=$MY_PWD # Where bin, share and data are
ledir=$MY_BASEDIR_VERSION/bin # Where mysqld is
DATADIR=$MY_BASEDIR_VERSION/data
# Check if this is a 'moved install directory'
elif test -f ./var/mysql/db.frm -a -f ./share/mysql/english/errmsg.sys -a \
-x ./libexec/mysqld
then
MY_BASEDIR_VERSION=$MY_PWD # Where libexec, share and var are
ledir=$MY_BASEDIR_VERSION/libexec # Where mysqld is
DATADIR=$MY_BASEDIR_VERSION/var
else
MY_BASEDIR_VERSION=@prefix@
DATADIR=@localstatedir@
ledir=@libexecdir@
fi
pid_file=$DATADIR/`/bin/hostname`.pid
MYSQL_UNIX_PORT=@MYSQL_UNIX_ADDR@
MYSQL_TCP_PORT=@MYSQL_TCP_PORT@
log=$DATADIR/`/bin/hostname`.log
err_log=$DATADIR/`/bin/hostname`.err
user=@MYSQLD_USER@
# Get first arguments from the my.cfg file, groups [mysqld] and [safe_mysqld]
# and then merge with the command line arguments
if test -x ./bin/my_print_defaults; then
print_defaults="./bin/my_print_defaults"
elif test -x @bindir@/my_print_defaults; then
print_defaults="@bindir@/my_print_defaults"
elif test -x @bindir@/mysql_print_defaults; then
print_defaults="@bindir@/mysql_print_defaults"
else
print_defaults="my_print_defaults"
fi
parse_arguments `$print_defaults $defaults mysqld safe_mysqld`
parse_arguments "$@"
if test ! -x $ledir/mysqld
then
echo "The file $ledir/mysqld doesn't exist or is not executable"
echo "Please do a cd to the mysql installation directory and restart"
echo "this script from there as follows:"
echo "./bin/safe_mysqld".
exit 1;
fi
NOHUP_NICENESS=`nohup nice`
if [ "x$NOHUP_NICENESS" = "x0" ] || ! nice --1 nice >/dev/null 2>&1 ; then
NOHUP_NICENESS="nohup"
else
NOHUP_NICENESS="nice --$NOHUP_NICENESS nohup"
fi
export MYSQL_UNIX_PORT
#export MYSQL_TCP_PORT
touch $err_log; chown $user $err_log
#
# If there exists an old pid file, check if the daemon is already running
# Note: The switches to 'ps' may depend on your operating system
if test -f $pid_file
then
PID=`cat $pid_file`
if @CHECK_PID@
then
if @FIND_PROC@
then # The pid contains a mysqld process
echo "A mysqld process already exists"
echo "A mysqld process already exists at " `date` >> $err_log
exit 1;
fi
fi
rm -f $pid_file
if test -f $pid_file
then
echo "Fatal error: Can't remove the pid file: $pid_file"
echo "Fatal error: Can't remove the pid file: $pid_file at " `date` >> $err_log
echo "Please remove it manually and start $0 again"
echo "mysqld daemon not started"
exit 1;
fi
fi
#
# Uncomment the following lines if you want all tables to be automaticly
# checked and repaired at start
#
# echo "Checking tables in $DATADIR"
# $MY_BASEDIR_VERSION/bin/myisamchk --silent --force --fast --medium-check $DATADIR/*/*.MYI
# $MY_BASEDIR_VERSION/bin/isamchk --silent --force $DATADIR/*/*.ISM
echo "Starting mysqld daemon with databases from $DATADIR"
# Does this work on all systems?
#if type ulimit | grep "shell builtin" > /dev/null
#then
# ulimit -n 256 > /dev/null 2>&1 # Fix for BSD and FreeBSD systems
#fi
echo "`date +'%y%m%d %H:%M:%S mysqld started'`" >> $err_log
while true
do
rm -f $MYSQL_UNIX_PORT $pid_file # Some extra safety
if test "$#" -eq 0
then
(trap "" 1 ; exec $NOHUP_NICENESS $ledir/mysqld --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR --user=$user --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ >> $err_log 2>&1 )
else
(trap "" ; exec $NOHUP_NICENESS $ledir/mysqld --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR --user=$user --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ "$@" >> $err_log 2>&1 )
fi
if test ! -f $pid_file # This is removed if normal shutdown
then
break;
fi
if @IS_LINUX@
then
# Test if one process was hanging.
# This is only a fix for Linux (running as base 3 mysqld processes)
# but should work for the rest of the servers.
# The only thing is ps x => redhat 5 gives warnings when using ps -x.
# kill -9 is used or the process won't react on the kill.
numofproces=`ps xa | grep -v "grep" | grep -c $ledir/mysqld`
echo -e "\nNumber of processes running now: $numofproces" | tee -a $err_log
I=1
while test "$I" -le "$numofproces"
do
PROC=`ps xa | grep $ledir/mysqld | grep -v "grep" | tail -1`
for T in $PROC
do
break
done
# echo "TEST $I - $T **"
if kill -9 $T
then
echo "mysqld process hanging, pid $T - killed" | tee -a $err_log
else
break
fi
I=`expr $I + 1`
done
fi
echo "`date +'%y%m%d %H:%M:%S mysqld restarted'`" | tee -a $err_log
done
echo -e "`date +'%y%m%d %H:%M:%S mysqld ended\n'`" | tee -a $err_log
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