multi_memcached

memcached

#! /bin/sh
### BEGIN INIT INFO
# Provides:		memcached
# Required-Start:	$syslog
# Required-Stop:	$syslog
# Should-Start:		$local_fs
# Should-Stop:		$local_fs
# Default-Start:	2 3 4 5
# Default-Stop:		0 1 6
# Short-Description:	memcached - Memory caching daemon
# Description:		memcached - Memory caching daemon 
### END INIT INFO


PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/bin/memcached
DAEMONNAME=memcached
DAEMONBOOTSTRAP=/usr/share/memcached/scripts/start-memcached
DESC=memcached

test -x $DAEMON || exit 0
test -x $DAEMONBOOTSTRAP || exit 0

set -e

FILES=(/etc/memcached_*.conf);
# check for alternative config schema
if [ -r "${FILES[0]}" ]; then
  CONFIGS=();
  for FILE in "${FILES[@]}";
  do
    # remove prefix
    NAME=${FILE#/etc/};
    # remove suffix
    NAME=${NAME%.conf};

    # check optional second param
    if [ $# -ne 2 ];
    then
      # add to config array
      CONFIGS+=($NAME);
    elif [ "memcached_$2" == "$NAME" ];
    then
      # use only one memcached
      CONFIGS=($NAME);
      break;
    fi;
  done;

  if [ ${#CONFIGS[@]} == 0 ];
  then
    echo "Config not exist for: $2" >&2;
    exit 1;
  fi;
else
  CONFIGS=(memcached);
fi;

CONFIG_NUM=${#CONFIGS[@]};
for ((i=0; i < $CONFIG_NUM; i++)); do
  NAME=${CONFIGS[${i}]};
  PIDFILE="/var/run/${NAME}.pid";

case "$1" in
  start)
	echo -n "Starting $DESC: "
        start-stop-daemon --start --quiet --exec "$DAEMONBOOTSTRAP" -- /etc/${NAME}.conf $PIDFILE
	echo "$NAME."
	;;
  stop)
	echo -n "Stopping $DESC: "
	start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE --exec $DAEMON 
	echo "$NAME."
	rm -f $PIDFILE
	;;

  restart|force-reload)
	#
	#	If the "reload" option is implemented, move the "force-reload"
	#	option to the "reload" entry above. If not, "force-reload" is
	#	just the same as "restart".
	#
	echo -n "Restarting $DESC: "
	start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE
	rm -f $PIDFILE
	sleep 1
        start-stop-daemon --start --quiet --exec "$DAEMONBOOTSTRAP" -- /etc/${NAME}.conf $PIDFILE
	echo "$NAME."
	;;
  *)
	N=/etc/init.d/$NAME
	# echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2
	echo "Usage: $N {start|stop|restart|force-reload}" >&2
	exit 1
	;;
esac
done;

exit 0

start-memcached

#!/usr/bin/perl -w

# start-memcached
# 2003/2004 - Jay Bonci <jaybonci@debian.org>
# This script handles the parsing of the /etc/memcached.conf file
# and was originally created for the Debian distribution.
# Anyone may use this little script under the same terms as
# memcached itself.

use strict;

if($> != 0 and $< != 0)
{
	print STDERR "Only root wants to run start-memcached.\n";
	exit;
}

my $params; my $etchandle; my $etcfile = "/etc/memcached.conf";

# This script assumes that memcached is located at /usr/bin/memcached, and
# that the pidfile is writable at /var/run/memcached.pid

my $memcached = "/usr/bin/memcached";
my $pidfile = "/var/run/memcached.pid";

if (scalar(@ARGV) == 2) {
	$etcfile = shift(@ARGV);
	$pidfile = shift(@ARGV);
}

# If we don't get a valid logfile parameter in the /etc/memcached.conf file,
# we'll just throw away all of our in-daemon output. We need to re-tie it so
# that non-bash shells will not hang on logout. Thanks to Michael Renner for 
# the tip
my $fd_reopened = "/dev/null";

	sub handle_logfile
	{
		my ($logfile) = @_;
		$fd_reopened = $logfile;
	}

	sub reopen_logfile
	{
		my ($logfile) = @_;

		open *STDERR, ">>$logfile";
		open *STDOUT, ">>$logfile";
		open *STDIN, ">>/dev/null";
		$fd_reopened = $logfile;
	}

# This is set up in place here to support other non -[a-z] directives

my $conf_directives = {
	"logfile" => \&handle_logfile,
};

if(open $etchandle, $etcfile)
{
	foreach my $line (<$etchandle>)
	{
		$line ||= "";
		$line =~ s/\#.*//g;
		$line =~ s/\s+$//g;
		$line =~ s/^\s+//g;
		next unless $line;
		next if $line =~ /^\-[dh]/;

		if($line =~ /^[^\-]/)
		{
			my ($directive, $arg) = $line =~ /^(.*?)\s+(.*)/; 
			$conf_directives->{$directive}->($arg);
			next;
		}

		push @$params, $line;		
	}

}else{
	$params = [];
}

	push @$params, "-u root" unless(grep "-u", @$params);
	$params = join " ", @$params;

if(-e $pidfile)
{
	open PIDHANDLE, "$pidfile";
	my $localpid = <PIDHANDLE>;
	close PIDHANDLE;

	chomp $localpid;
	if(-d "/proc/$localpid")
	{
		print STDERR "memcached is already running.\n"; 
		exit;		
	}else{
		`rm -f $localpid`;
	}

}

my $pid = fork();

if($pid == 0)
{
		reopen_logfile($fd_reopened);
		exec "$memcached $params";
		exit(0);

}else{
	if(open PIDHANDLE,">$pidfile")
	{
		print PIDHANDLE $pid;
		close PIDHANDLE;
	}else{

		print STDERR "Can't write pidfile to $pidfile.\n";
	}
}

memcached goes to /etc/init.d/memcached
start-memcached goes to /usr/share/memcached/scripts/start-memcached.
configs go to /etc/memcached_.conf

original patches from http://blog.nevalon.de/en/wie-kann-ich-mehrere-instanzen-von-memcached-auf-einem-server-laufen-lassenhow-can-i-run-multiple-instances-of-memcached-on-one-server-20090729