mirror of
https://github.com/MariaDB/server.git
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347 lines
10 KiB
Bash
347 lines
10 KiB
Bash
#!/bin/sh
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# Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB
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# This file is public domain and comes with NO WARRANTY of any kind
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#
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# scripts to start the MySQL daemon and restart it if it dies unexpectedly
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#
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# This should be executed in the MySQL base directory if you are using a
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# binary installation that has other paths than you are using.
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#
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# mysql.server works by first doing a cd to the base directory and from there
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# executing mysqld_safe
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KILL_MYSQLD=1;
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trap '' 1 2 3 15 # we shouldn't let anyone kill us
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umask 007
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defaults=
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case "$1" in
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--no-defaults|--defaults-file=*|--defaults-extra-file=*)
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defaults="$1"; shift
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;;
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esac
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parse_arguments() {
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# We only need to pass arguments through to the server if we don't
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# handle them here. So, we collect unrecognized options (passed on
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# the command line) into the args variable.
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pick_args=
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if test "$1" = PICK-ARGS-FROM-ARGV
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then
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pick_args=1
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shift
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fi
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for arg do
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case "$arg" in
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--skip-kill-mysqld*)
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KILL_MYSQLD=0;
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;;
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# these get passed explicitly to mysqld
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--basedir=*) MY_BASEDIR_VERSION=`echo "$arg" | sed -e "s;--basedir=;;"` ;;
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--datadir=*) DATADIR=`echo "$arg" | sed -e "s;--datadir=;;"` ;;
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--pid-file=*) pid_file=`echo "$arg" | sed -e "s;--pid-file=;;"` ;;
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--user=*)
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if test $SET_USER -eq 0
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then
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user=`echo "$arg" | sed -e "s;--[^=]*=;;"` ; SET_USER=1
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fi
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;;
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# these two might have been set in a [mysqld_safe] section of my.cnf
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# they are added to mysqld command line to override settings from my.cnf
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--socket=*) mysql_unix_port=`echo "$arg" | sed -e "s;--socket=;;"` ;;
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--port=*) mysql_tcp_port=`echo "$arg" | sed -e "s;--port=;;"` ;;
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# mysqld_safe-specific options - must be set in my.cnf ([mysqld_safe])!
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--ledir=*) ledir=`echo "$arg" | sed -e "s;--ledir=;;"` ;;
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# err-log should be removed in 5.0
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--err-log=*) err_log=`echo "$arg" | sed -e "s;--err-log=;;"` ;;
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--log-error=*) err_log=`echo "$arg" | sed -e "s;--log-error=;;"` ;;
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# QQ The --open-files should be removed in 5.0
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--open-files=*) open_files=`echo "$arg" | sed -e "s;--open-files=;;"` ;;
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--open-files-limit=*) open_files=`echo "$arg" | sed -e "s;--open-files-limit=;;"` ;;
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--core-file-size=*) core_file_size=`echo "$arg" | sed -e "s;--core-file-size=;;"` ;;
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--timezone=*) TZ=`echo "$arg" | sed -e "s;--timezone=;;"` ; export TZ; ;;
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--mysqld=*) MYSQLD=`echo "$arg" | sed -e "s;--mysqld=;;"` ;;
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--mysqld-version=*)
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tmp=`echo "$arg" | sed -e "s;--mysqld-version=;;"`
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if test -n "$tmp"
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then
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MYSQLD="mysqld-$tmp"
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else
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MYSQLD="mysqld"
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fi
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;;
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--nice=*) niceness=`echo "$arg" | sed -e "s;--nice=;;"` ;;
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*)
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if test -n "$pick_args"
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then
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# This sed command makes sure that any special chars are quoted,
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# so the arg gets passed exactly to the server.
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args="$args "`echo "$arg" | sed -e 's,\([^a-zA-Z0-9_.-]\),\\\\\1,g'`
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fi
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;;
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esac
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done
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}
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MY_PWD=`pwd`
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# Check if we are starting this relative (for the binary release)
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if test -d $MY_PWD/data/mysql -a -f ./share/mysql/english/errmsg.sys -a \
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-x ./bin/mysqld
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then
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MY_BASEDIR_VERSION=$MY_PWD # Where bin, share and data are
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ledir=$MY_BASEDIR_VERSION/bin # Where mysqld is
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DATADIR=$MY_BASEDIR_VERSION/data
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if test -z "$defaults"
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then
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defaults="--defaults-extra-file=$MY_BASEDIR_VERSION/data/my.cnf"
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fi
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# Check if this is a 'moved install directory'
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elif test -f ./var/mysql/db.frm -a -f ./share/mysql/english/errmsg.sys -a \
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-x ./libexec/mysqld
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then
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MY_BASEDIR_VERSION=$MY_PWD # Where libexec, share and var are
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ledir=$MY_BASEDIR_VERSION/libexec # Where mysqld is
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DATADIR=$MY_BASEDIR_VERSION/var
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else
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MY_BASEDIR_VERSION=@prefix@
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DATADIR=@localstatedir@
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ledir=@libexecdir@
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fi
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safe_mysql_unix_port=${mysql_unix_port:-${MYSQL_UNIX_PORT:-@MYSQL_UNIX_ADDR@}}
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user=@MYSQLD_USER@
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niceness=0
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# Use the mysqld-max binary by default if the user doesn't specify a binary
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if test -x $ledir/mysqld-max
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then
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MYSQLD=mysqld-max
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else
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MYSQLD=mysqld
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fi
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# these rely on $DATADIR by default, so we'll set them later on
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pid_file=
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err_log=
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SET_USER=0
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# Get first arguments from the my.cnf file, groups [mysqld] and [mysqld_safe]
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# and then merge with the command line arguments
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if test -x ./bin/my_print_defaults
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then
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print_defaults="./bin/my_print_defaults"
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elif test -x @bindir@/my_print_defaults
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then
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print_defaults="@bindir@/my_print_defaults"
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elif test -x @bindir@/mysql_print_defaults
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then
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print_defaults="@bindir@/mysql_print_defaults"
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else
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print_defaults="my_print_defaults"
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fi
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args=
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parse_arguments `$print_defaults --loose-verbose $defaults mysqld server mysqld_safe safe_mysqld`
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parse_arguments PICK-ARGS-FROM-ARGV "$@"
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if test ! -x $ledir/$MYSQLD
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then
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echo "The file $ledir/$MYSQLD doesn't exist or is not executable"
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echo "Please do a cd to the mysql installation directory and restart"
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echo "this script from there as follows:"
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echo "./bin/mysqld_safe".
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exit 1
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fi
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if test -z "$pid_file"
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then
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pid_file=$DATADIR/`@HOSTNAME@`.pid
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else
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case "$pid_file" in
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/* ) ;;
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* ) pid_file="$DATADIR/$pid_file" ;;
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esac
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fi
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test -z "$err_log" && err_log=$DATADIR/`@HOSTNAME@`.err
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if test -n "$mysql_unix_port"
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then
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args="--socket=$mysql_unix_port $args"
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fi
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if test -n "$mysql_tcp_port"
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then
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args="--port=$mysql_tcp_port $args"
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fi
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if test $niceness -eq 0
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then
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NOHUP_NICENESS="nohup"
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else
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NOHUP_NICENESS="nohup nice -$niceness"
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fi
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# Using nice with no args to get the niceness level is GNU-specific.
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# This check could be extended for other operating systems (e.g.,
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# BSD could use "nohup sh -c 'ps -o nice -p $$' | tail -1").
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# But, it also seems that GNU nohup is the only one which messes
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# with the priority, so this is okay.
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if nohup nice > /dev/null 2>&1
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then
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normal_niceness=`nice`
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nohup_niceness=`nohup nice`
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numeric_nice_values=1
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for val in $normal_niceness $nohup_niceness
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do
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case "$val" in
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-[0-9] | -[0-9][0-9] | -[0-9][0-9][0-9] | \
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[0-9] | [0-9][0-9] | [0-9][0-9][0-9] )
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;;
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* )
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numeric_nice_values=0 ;;
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esac
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done
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if test $numeric_nice_values -eq 1
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then
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nice_value_diff=`expr $nohup_niceness - $normal_niceness`
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if test $? -eq 0 && test $nice_value_diff -gt 0 && \
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nice --$nice_value_diff echo testing > /dev/null 2>&1
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then
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# nohup increases the priority (bad), and we are permitted
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# to lower the priority with respect to the value the user
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# might have been given
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niceness=`expr $niceness - $nice_value_diff`
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NOHUP_NICENESS="nice -$niceness nohup"
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fi
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fi
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else
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if nohup echo testing > /dev/null 2>&1
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then
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:
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else
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# nohup doesn't work on this system
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NOHUP_NICENESS=""
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fi
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fi
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USER_OPTION=""
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if test -w / -o "$USER" = "root"
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then
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if test "$user" != "root" -o $SET_USER = 1
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then
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USER_OPTION="--user=$user"
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fi
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# If we are root, change the err log to the right user.
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touch $err_log; chown $user $err_log
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if test -n "$open_files"
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then
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ulimit -n $open_files
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args="--open-files-limit=$open_files $args"
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fi
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if test -n "$core_file_size"
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then
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ulimit -c $core_file_size
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fi
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fi
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#
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# If there exists an old pid file, check if the daemon is already running
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# Note: The switches to 'ps' may depend on your operating system
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if test -f $pid_file
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then
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PID=`cat $pid_file`
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if @CHECK_PID@
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then
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if @FIND_PROC@
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then # The pid contains a mysqld process
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echo "A mysqld process already exists"
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echo "A mysqld process already exists at " `date` >> $err_log
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exit 1
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fi
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fi
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rm -f $pid_file
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if test -f $pid_file
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then
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echo "Fatal error: Can't remove the pid file: $pid_file"
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echo "Fatal error: Can't remove the pid file: $pid_file at " `date` >> $err_log
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echo "Please remove it manually and start $0 again"
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echo "mysqld daemon not started"
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exit 1
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fi
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fi
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#
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# Uncomment the following lines if you want all tables to be automatically
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# checked and repaired during startup. You should add sensible key_buffer
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# and sort_buffer values to my.cnf to improve check performance or require
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# less disk space.
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# Alternatively, you can start mysqld with the "myisam-recover" option. See
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# the manual for details.
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#
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# echo "Checking tables in $DATADIR"
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# $MY_BASEDIR_VERSION/bin/myisamchk --silent --force --fast --medium-check $DATADIR/*/*.MYI
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# $MY_BASEDIR_VERSION/bin/isamchk --silent --force $DATADIR/*/*.ISM
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echo "Starting $MYSQLD daemon with databases from $DATADIR"
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# Does this work on all systems?
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#if type ulimit | grep "shell builtin" > /dev/null
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#then
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# ulimit -n 256 > /dev/null 2>&1 # Fix for BSD and FreeBSD systems
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#fi
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echo "`date +'%y%m%d %H:%M:%S mysqld started'`" >> $err_log
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while true
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do
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rm -f $safe_mysql_unix_port $pid_file # Some extra safety
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if test -z "$args"
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then
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$NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ >> $err_log 2>&1
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else
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eval "$NOHUP_NICENESS $ledir/$MYSQLD $defaults --basedir=$MY_BASEDIR_VERSION --datadir=$DATADIR $USER_OPTION --pid-file=$pid_file @MYSQLD_DEFAULT_SWITCHES@ $args >> $err_log 2>&1"
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fi
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if test ! -f $pid_file # This is removed if normal shutdown
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then
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break
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fi
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if test @IS_LINUX@ -a $KILL_MYSQLD -eq 1
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then
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# Test if one process was hanging.
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# This is only a fix for Linux (running as base 3 mysqld processes)
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# but should work for the rest of the servers.
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# The only thing is ps x => redhat 5 gives warnings when using ps -x.
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# kill -9 is used or the process won't react on the kill.
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numofproces=`ps xa | grep -v "grep" | grep -c $ledir/$MYSQLD`
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echo -e "\nNumber of processes running now: $numofproces" | tee -a $err_log
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I=1
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while test "$I" -le "$numofproces"
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do
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PROC=`ps xa | grep $ledir/$MYSQLD | grep -v "grep" | sed -n '$p'`
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for T in $PROC
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do
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break
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done
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# echo "TEST $I - $T **"
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if kill -9 $T
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then
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echo "$MYSQLD process hanging, pid $T - killed" | tee -a $err_log
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else
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break
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fi
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I=`expr $I + 1`
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done
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fi
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echo "`date +'%y%m%d %H:%M:%S'` mysqld restarted" | tee -a $err_log
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done
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echo "`date +'%y%m%d %H:%M:%S'` mysqld ended" | tee -a $err_log
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echo "" | tee -a $err_log
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