Memcached启停脚本小结

编写配置文件

vim/etc/memcached.conf

内容如下：

-m128-d-p11211-c1024

编写启动脚本

vim /etc/rc.d/init.d/memcached

#!/bin/bash

#

# memcached This shell script takes care of starting and stopping

# standalone memcached.

#
. /etc/rc.d/init.d/functions
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/local/bin/memcached
DAEMONBOOTSTRAP=/usr/local/bin/start-memcached
DAEMONCONF=/etc/memcached.conf
NAME=memcached
DESC=memcached
PIDFILE=/var/run/$NAME.pid
[-x$DAEMON]||exit0[-x$DAEMONBOOTSTRAP]||exit0RETVAL=0
start(){echo-n $"Starting $DESC: "
daemon $DAEMONBOOTSTRAP$DAEMONCONFRETVAL=$?[$RETVAL-eq0]&&touch$PIDFILEechoreturn$RETVAL}
stop(){echo-n $"Shutting down $DESC: "
killproc $NAMERETVAL=$?echo[$RETVAL-eq0]&&rm-f$PIDFILEreturn$RETVAL}# See how we were called.case"$1"in
start)
start
;;
stop)
stop
;;
restart|reload)
stop
start
RETVAL=$?;;
status)
status $progRETVAL=$?;;*)echo $"Usage: $0 {start|stop|restart|status}"exit1esacexit$RETVAL

[编辑]编写start-memcached脚本

vim /usr/local/bin/start-memcached

#!/usr/bin/perl -w# start-memcached
use strict;
if($>!= 0 and $<!= 0){
print STDERR "Only root wants to run start-memcached.\n";
exit;
}
my $etcfile = shift||"/etc/memcached.conf";
my $params = [];
my $etchandle;
# 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/local/bin/memcached";
my $pidfile = "/var/run/memcached.pid";
# 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>){$line =~ s/\#.*//go;$line = join' ', split' ', $line;
next unless $line;
next if$line =~ /^\-[dh]/o;
if($line =~ /^[^\-]/o){
my ($directive, $arg) = $line =~ /^(.*?)\s+(.*)/;
$conf_directives->{$directive}->($arg);
next;
}
push @$params, $line;
}}
unshift @$params, "-u root" unless (grep$_ eq '-u', @$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$params";
exit(0);
} elsif (open PIDHANDLE,">$pidfile"){
print PIDHANDLE $pid;
close PIDHANDLE;
}else{
print STDERR "Can't write pidfile to $pidfile.\n";
}

修改权限

chmod 755 /etc/rc.d/init.d/memcached
chmod 755 /usr/local/bin/start-memcached

启动

service memcached start

[编辑]艺搜参考

http://forums.eukhost.com/f15/memcached-best-caching-option-linux-web-servers-5269/

http://duntuk.com/how-install-memcached-centos-memcached-php-extension-centos

http://complitech.net/steps-for-install-memcached-on-fedoara-linux-platform-and-create-service-for-memcached/