memcached安装

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Memcached 官方地址:http://memcached.org/

操作系统:centos7

memcached安装

Memcached 安装

  • yum安装memcached
#创建一个不可登录的账户,到时用于启动memcached
useradd work -M -s /sbin/nologin
#yum安装
yum -y install memcached
  • 源码安装memcached
#官方下载最新的源码安装包
wget http://memcached.org/latest
#解压 
tar -zxvf memcached-1.x.x.tar.gz
进入到解压目录
cd memcached-1.x.x
#编译源码到指到目录
./configure --prefix=/usr/local/memcached 
#安装
make && make install

查看启动参数

[root@ip-172-31-18-226 xubo-iri]# memcached -h
memcached 1.4.15
-p <num> TCP port number to listen on (default: 11211)
-U <num> UDP port number to listen on (default: 11211, 0 is off)
-s <file> UNIX socket path to listen on (disables network support)
-a <mask> access mask for UNIX socket, in octal (default: 0700)
-l <addr> interface to listen on (default: INADDR_ANY, all addresses)
 <addr> may be specified as host:port. If you don't specify
 a port number, the value you specified with -p or -U is
 used. You may specify multiple addresses separated by comma
 or by using -l multiple times
-d run as a daemon
-r maximize core file limit
-u <username> assume identity of <username> (only when run as root)
-m <num> max memory to use for items in megabytes (default: 64 MB)
-M return error on memory exhausted (rather than removing items)
-c <num> max simultaneous connections (default: 1024)
-k lock down all paged memory. Note that there is a
 limit on how much memory you may lock. Trying to
 allocate more than that would fail, so be sure you
 set the limit correctly for the user you started
 the daemon with (not for -u <username> user;
 under sh this is done with 'ulimit -S -l NUM_KB').
-v verbose (print errors/warnings while in event loop)
-vv very verbose (also print client commands/reponses)
-vvv extremely verbose (also print internal state transitions)
-h print this help and exit
-i print memcached and libevent license
-P <file> save PID in <file>, only used with -d option
-f <factor> chunk size growth factor (default: 1.25)
-n <bytes> minimum space allocated for key+value+flags (default: 48)
-L Try to use large memory pages (if available). Increasing
 the memory page size could reduce the number of TLB misses
 and improve the performance. In order to get large pages
 from the OS, memcached will allocate the total item-cache
 in one large chunk.
-D <char> Use <char> as the delimiter between key prefixes and IDs.
 This is used for per-prefix stats reporting. The default is
 ":" (colon). If this option is specified, stats collection
 is turned on automatically; if not, then it may be turned on
 by sending the "stats detail on" command to the server.
-t <num> number of threads to use (default: 4)
-R Maximum number of requests per event, limits the number of
 requests process for a given connection to prevent 
 starvation (default: 20)
-C Disable use of CAS
-b <num> Set the backlog queue limit (default: 1024)
-B Binding protocol - one of ascii, binary, or auto (default)
-I Override the size of each slab page. Adjusts max item size
 (default: 1mb, min: 1k, max: 128m)
-S Turn on Sasl authentication
-o Comma separated list of extended or experimental options
 - (EXPERIMENTAL) maxconns_fast: immediately close new
 connections if over maxconns limit
 - hashpower: An integer multiplier for how large the hash
 table should be. Can be grown at runtime if not big enough.
 Set this based on "STAT hash_power_level" before a 
 restart.

启动memcached

 memcached -m 512 -u work -d -l 172.31.18.226 -p 11211 -c 1024 -P /tmp/memcached.pid
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