Tokyo Tyrant 启动脚本

Tokyo Tyrant 启动脚本，mhost、mport 为可选参数，如果要使用双机主辅模式就得启用这两个参数

#!/bin/bash
#
# chkconfig: - 90 90
# description:  The Tokyo Tyrant daemon is a network memory cache service.
# processname: ttserver
#----------------------------------------------------------------
# Startup script for the server of Tokyo Tyrant
#----------------------------------------------------------------

# source function library
. /etc/rc.d/init.d/functions

# configuration variables
prog="ttservctl"
cmd="/usr/local/bin/ttserver"
basedir="/data/ttserver"
host="192.168.11.126"
port="11211"
thnum="8"
pidfile="/tmp/ttserver.pid"
logfile="/var/log/ttserver.log"
ulogdir="/data/ttserver"
ulimsiz="128m"
sid=20
#mhost="192.168.11.88"
mhost=""
mport=""
#mport="11211"
rtsfile="$basedir/ttserver.rts"
dbname="$basedir/database.tch"
maxcon="65535"
retval=0

# setting environment variables
LANG=C
LC_ALL=C
PATH="$PATH:/sbin:/usr/sbin:/usr/local/sbin"
export LANG LC_ALL PATH

# start the server
start(){
    printf 'Starting the server of Tokyo Tyrant\n'
    /bin/mkdir -p "$basedir"
    if [[ -z "$basedir" ]] || [[ -z "$port" ]] || [[ -z "$pidfile" ]] || [[ -z "$dbname" ]];then
        printf 'Invalid configuration\n'
        retval=1
    elif [[ ! -d "$basedir" ]];then
        printf 'No such directory: %s\n' "$basedir"
        retval=1
    elif [[ -f "$pidfile" ]];then
        pid=$(/bin/cat $pidfile)
        printf 'Existing process: %d\n' "$pid"
        printf "Please delete $pidfile!\n"
        retval=1
    else
        if [[ -n "$maxcon" ]];then
            ulimit -n "$maxcon" > /dev/null 2>&1
        fi
            cmd="$cmd -host $host -port $port -thnum $thnum -dmn -pid $pidfile"
        if [[ -n "$logfile" ]];then
            cmd="$cmd -log $logfile -le"
        fi
        if [[ -n "$ulogdir" ]];then
            cmd="$cmd -ulog $ulogdir"
        fi
        if [[ -n "$ulimsiz" ]];then
            cmd="$cmd -ulim $ulimsiz"
        fi
        if [[ -n "$sid" ]];then
            cmd="$cmd -sid $sid"
        fi
        if [[ -n "$mhost" ]];then
            cmd="$cmd -mhost $mhost"
        fi
        if [[ -n "$mport" ]];then
            cmd="$cmd -mport $mport"
        fi
        if [[ -n "$rtsfile" ]];then
            cmd="$cmd -rts $rtsfile"
        fi
            printf "Executing: %s\n" "$cmd"
            cmd="$cmd $dbname"
        $cmd
        RETVAL=$?
        if [[ "$RETVAL" -eq 0 ]];then
            /bin/touch /var/lock/subsys/ttserver
            printf 'Done\n'
        else
            printf 'The server could not started\n'
            retval=1
        fi
    fi
}

# stop the server
stop(){
    printf 'Stopping the server of Tokyo Tyrant\n'
    if [[ -f "$pidfile" ]];then
        pid=$(/bin/cat "$pidfile")
        printf "Sending the terminal signal to the process: %s\n" "$pid"
        /bin/kill -TERM "$pid"
        c=0
        while true ; do
            /bin/sleep 1
            if [[ -f "$pidfile" ]];then
                c=$(expr $c + 1)
                if [[ "$c" -ge 100 ]];then
                    printf 'Hanging process: %d\n' "$pid"
                    retval=1
                    break
                fi
            else
                /bin/rm -f /var/lock/subsys/ttserver
                printf 'Done\n'
                break
            fi
        done
    else
        printf 'No process found\n'
        retval=1
    fi
}

# send HUP to the server for log rotation
hup(){
    printf 'Sending HUP signal to the server of Tokyo Tyrant\n'
    if [[ -f "$pidfile" ]];then
        pid=$(cat "$pidfile")
        printf "Sending the hangup signal to the process: %s\n" "$pid"
        kill -HUP "$pid"
        printf 'Done\n'
    else
        printf 'No process found\n'
        retval=1
    fi
}


# check permission
if [[ -d "$basedir"  && ! $(/bin/touch "$basedir/$$" >/dev/null 2>&1) ]];then
    /bin/rm -f "$basedir/$$"
else
    printf 'Permission denied\n'
exit 1
fi

# dispatch the command
case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    restart)
        stop
        start
        ;;
    status)
        status -p $pidfile ttserver
        retval=$?
        ;;
    hup)
        hup
        ;;
    *)
        printf 'Usage: %s {start|stop|restart|hup}\n' "$prog"
        exit 1
        ;;
esac

exit "$retval"